MPG Office Trust 424B3 Prospectus supplement

Filed Pursuant to Rule 424(b)(3)

Registration Statement No. 333-117290

PROSPECTUS SUPPLEMENT

Dated March 17, 2008 (to Prospectus dated August 23, 2004)

8,973,726 Shares

Common Stock

This prospectus supplement relates to the issuance of 1,567,810 shares of our common stock and the possible issuance of up to 7,405,916 shares of our common stock in exchange for units representing common limited partnership interests, or common units, in Maguire Properties, L.P., or our operating partnership, upon prior redemptions by certain limited partners and any future redemption by one or more of the limited partners pursuant to their contractual rights, and the possible resale from time to time of some or all of such shares of common stock by the selling stockholders named in this prospectus supplement.

We will receive no proceeds from any issuance of the shares of our common stock covered by this prospectus supplement and the accompanying prospectus to the selling stockholders or from any sale of such shares by the selling stockholders, but we have agreed to pay certain registration expenses.

Our common stock currently trades on the New York Stock Exchange, or NYSE, under the symbol “MPG.” On March 14, 2008, the last reported sales price of our common stock on the NYSE was $19.00 per share.

See “Risk Factors” beginning on page 1 of the accompanying prospectus for certain risk factors relevant to an investment in our common stock.

Neither the Securities and Exchange Commission, or SEC, nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is March 17, 2008

EXPLANATORY NOTE

This prospectus supplement relates to the issuance of 1,567,810 shares of our common stock and the possible issuance of up to 7,405,916 shares of our common stock to the selling stockholders in exchange for the common units held by the selling stockholders. This prospectus supplement is being filed to update the sections contained herein to reflect changes in the ordinary course of business since the date of the accompanying prospectus, filed with the SEC on August 23, 2004.

TABLE OF CONTENTS

PROSPECTUS SUPPLEMENT

	Page
UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS	S-1
SELLING STOCKHOLDERS	S-19
PLAN OF DISTRIBUTION	S-21
WHERE YOU CAN FIND MORE INFORMATION	S-22
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE	S-22

PROSPECTUS

	Page
RISK FACTORS	1
FORWARD-LOOKING STATEMENTS	3
OUR COMPANY	4
USE OF PROCEEDS	5
DESCRIPTION OF SECURITIES	6
DESCRIPTION OF THE PARTNERSHIP AGREEMENT OF MAGUIRE PROPERTIES, L.P.	12
EXCHANGE OF COMMON UNITS FOR COMMON STOCK	17
MATERIAL PROVISIONS OF MARYLAND LAW AND OF OUR CHARTER AND BYLAWS	27
MATERIAL FEDERAL INCOME TAX CONSIDERATIONS	32
SELLING STOCKHOLDERS	50
PLAN OF DISTRIBUTION	52
LEGAL MATTERS	53
EXPERTS	53
WHERE YOU CAN FIND MORE INFORMATION	53
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE	54

Unless otherwise indicated or unless the context requires otherwise, all references in this prospectus supplement to “we,” “us,” “our” or “our company” refer to Maguire Properties, Inc., including its consolidated subsidiaries.

You should rely only on the information contained in this document or incorporated by reference. Neither we nor the holders have authorized anyone to provide you with information or make any representation that is different. If anyone provides you with different or inconsistent information, you should not rely on it. Neither this prospectus supplement nor the accompanying prospectus is an offer to sell or a solicitation of an offer to buy any securities other than the registered securities to which they relate and neither this prospectus supplement nor the accompanying prospectus is an offer to sell or the solicitation of an offer to buy securities in any jurisdiction where, or to any person to whom, it is unlawful to make an offer or solicitation. You should not assume that the information contained in this prospectus supplement and the accompanying prospectus is correct on any date after their respective dates even though this prospectus supplement and the accompanying prospectus are delivered or shares are sold pursuant to the prospectus supplement and the accompanying prospectus at a later date. Since the date of this prospectus supplement, our business, financial condition, results of operations and prospects may have changed.

UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

The following is a general summary of the material United States federal income tax considerations regarding our company and the ownership of our capital stock. This summary supersedes, in its entirety, the summary under the heading “Material Federal Income Tax Considerations” in the accompanying prospectus. This summary is for general information only and is not tax advice. The information in this summary is based on:

• the Internal Revenue Code of 1986, as amended, or the Code;

• current, temporary and proposed Treasury Regulations promulgated under the Code;

• the legislative history of the Code;

• current administrative interpretations and practices of the Internal Revenue Service, or IRS; and

• court decisions;

in each case, as of the date of this prospectus supplement. In addition, the administrative interpretations and practices of the IRS include its practices and policies as expressed in private letter rulings that are not binding on the IRS except with respect to the particular taxpayers who requested and received those rulings. Future legislation, Treasury Regulations, administrative interpretations and practices and/or court decisions may adversely affect the tax considerations contained in this discussion. Any such change could apply retroactively to transactions preceding the date of the change. We have not requested and do not intend to request a ruling from the IRS that we qualify as a REIT, and the statements in this prospectus supplement are not binding on the IRS or any court. Thus, we can provide no assurance that the tax considerations contained in this discussion will not be challenged by the IRS or will be sustained by a court if challenged by the IRS. This summary does not discuss any state, local or foreign tax consequences associated with the acquisition, ownership, sale or other disposition of our capital stock or our election to be taxed as a REIT.

You are urged to consult your tax advisors regarding the specific tax consequences to you of:

• the exchange of any common units for our common stock or cash;

• the acquisition, ownership and sale or other disposition of our capital stock, including the federal, state, local, foreign and other tax consequences;

• our election to be taxed as a REIT for federal income tax purposes; and

• potential changes in applicable tax laws.

Tax Consequences of the Exercise of Exchange Rights

If you own common units and exercise your right to require the operating partnership to acquire all or part of your common units, and we elect to acquire some or all of your common units in exchange for our common stock, the exchange will be a taxable transaction. You generally will recognize gain in an amount equal to the value of our common stock received, plus the amount of liabilities of our operating partnership allocable to your common units being exchanged, less your tax basis in those common units. The recognition of any loss is subject to a number of limitations set forth in the Code. The character of any gain or loss as capital or ordinary will depend on the nature of the assets of our operating partnership at the time of the exchange. The tax treatment of any acquisition of your common units by us in exchange for cash may be similar, depending on your circumstances.

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Taxation of Our Company

General. We have elected to be taxed as a REIT under Sections 856 through 860 of the Code, commencing with our taxable year ended December 31, 2003. We believe that we have been organized and have operated in a manner which will allow us to qualify for taxation as a REIT under the Code commencing with our taxable year ended December 31, 2003, and we intend to continue to be organized and operate in this manner. However, qualification and taxation as a REIT depend upon our ability to meet the various qualification tests imposed under the Code, including through actual annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that we have been organized and have operated, or will continue to be organized and operate, in a manner so as to qualify or remain qualified as a REIT. See “—Failure to Qualify.”

Latham & Watkins LLP rendered an opinion to us regarding our tax status as a REIT under the Code on July 9, 2004. This opinion has not been updated subsequent to its date, and no opinion regarding our tax status as a REIT under the Code is being rendered in connection with this prospectus supplement.

The sections of the Code and the corresponding Treasury Regulations that relate to qualification and taxation as a REIT are highly technical and complex. The following sets forth the material aspects of the sections of the Code that govern the federal income tax treatment of a REIT and its stockholders. This summary is qualified in its entirety by the applicable Code provisions, relevant rules and regulations promulgated under the Code, and administrative and judicial interpretations of the Code and these rules and regulations.

Provided we qualify for taxation as a REIT, we generally will not be required to pay federal corporate income taxes on our net income that is currently distributed to our stockholders. This treatment substantially eliminates the “double taxation” that ordinarily results from investment in a C corporation. A C corporation is a corporation that generally is required to pay tax at the corporate level. Double taxation means taxation once at the corporate-level when income is earned and once again at the stockholder level when the income is distributed. We will, however, be required to pay federal income tax as follows:

• First, we will be required to pay tax at regular corporate rates on any undistributed REIT taxable income, including undistributed net capital gains.

• Second, we may be required to pay the “alternative minimum tax” on our items of tax preference under some circumstances.

• Third, if we have (1) net income from the sale or other disposition of “foreclosure property” which is held primarily for sale to customers in the ordinary course of business or (2) other nonqualifying income from foreclosure property, we will be required to pay tax at the highest corporate rate on this income. Foreclosure property generally is defined as property we acquired through foreclosure or after a default on a loan secured by the property or a lease of the property.

• Fourth, we will be required to pay a 100% tax on any net income from prohibited transactions. Prohibited transactions are, in general, sales or other taxable dispositions of property, other than foreclosure property, held primarily for sale to customers in the ordinary course of business.

• Fifth, if we fail to satisfy the 75% gross income test or the 95% gross income test, but have otherwise maintained our qualification as a REIT because certain other requirements are met, we will be required to a pay tax equal to (1) the greater of (A) the amount by which 75% of our gross income exceeds the amount qualifying under the 75% gross income test and (B) the amount by which 95% of our gross income (90% for our taxable year ended December 31, 2004) exceeds the amount qualifying under the 95% gross income test, multiplied by (2) a fraction intended to reflect our profitability.

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• Sixth, if we fail to satisfy any of the REIT asset tests (other than a de minimis failure of the 5% or 10% asset test), due to reasonable cause and not due to willful neglect, and we nonetheless maintain our REIT qualification because of specified cure provisions, we will be required to pay a tax equal to the greater of $50,000 or the highest corporate tax rate multiplied by the net income generated by the nonqualifying assets that caused us to fail such test.

• Seventh, if we fail to satisfy any provision of the Code that would result in our failure to qualify as a REIT (other than a violation of the REIT gross income tests or certain violations of the asset tests described below) and the violation is due to reasonable cause and not due to willful neglect, we may retain our REIT qualification but we will be required to pay a penalty of $50,000 for each such failure.

• Eighth, we will be required to pay a 4% excise tax to the extent we fail to distribute during each calendar year at least the sum of (1) 85% of our REIT ordinary income for the year, (2) 95% of our REIT capital gain net income for the year, and (3) any undistributed taxable income from prior periods.

• Ninth, if we acquire any asset from a corporation which is or has been a C corporation in a transaction in which the basis of the asset in our hands is determined by reference to the basis of the asset in the hands of the C corporation, and we subsequently recognize gain on the disposition of the asset during the ten-year period beginning on the date on which we acquired the asset, then we will be required to pay tax at the highest regular corporate tax rate on this gain to the extent of the excess of (1) the fair market value of the asset over (2) our adjusted basis in the asset, in each case determined as of the date on which we acquired the asset. The results described in this paragraph with respect to the recognition of gain assume that the C corporation will refrain from making an election to receive different treatment under existing Treasury Regulations on its tax return for the year in which we acquire an asset from the C corporation.

• Tenth, we will be required to pay a 100% tax on any “redetermined rents,” “redetermined deductions” or “excess interest.” See “—Penalty Tax.” In general, redetermined rents are rents from real property that are overstated as a result of services furnished to any of our tenants by a “taxable REIT subsidiary” of ours. Redetermined deductions and excess interest generally represent amounts that are deducted by a taxable REIT subsidiary of ours for amounts paid to us that are in excess of the amounts that would have been deducted based on arm’s length negotiations.

Requirements for Qualification as a REIT. The Code defines a REIT as a corporation, trust or association:

(1) that is managed by one or more trustees or directors;

(2) that issues transferable shares or transferable certificates to evidence its beneficial ownership;

(3) that would be taxable as a domestic corporation, but for Sections 856 through 860 of the Code;

(4) that is not a financial institution or an insurance company within the meaning of certain provisions of the Code;

(5) that is beneficially owned by 100 or more persons;

(6) not more than 50% in value of the outstanding stock of which is owned, actually or constructively, by five or fewer individuals, including specified entities, during the last half of each taxable year; and

(7) that meets other tests, described below, regarding the nature of its income and assets and the amount of its distributions.

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The Code provides that conditions (1) to (4), inclusive, must be met during the entire taxable year and that condition (5) must be met during at least 335 days of a taxable year of 12 months, or during a proportionate part of a taxable year of less than 12 months. Conditions (5) and (6) do not apply until after the first taxable year for which an election is made to be taxed as a REIT. For purposes of condition (6), pension funds and other specified tax-exempt entities generally are treated as individuals, except that a “look-through” exception applies with respect to pension funds.

We believe that we have been organized, have operated and have issued sufficient shares of capital stock with sufficient diversity of ownership to allow us to satisfy conditions (1) through (7) inclusive, during the relevant time periods. In addition, our charter provides for restrictions regarding ownership and transfer of our shares which are intended to assist us in continuing to satisfy the share ownership requirements described in (5) and (6) above. These restrictions, however, may not ensure that we will, in all cases, be able to satisfy the share ownership requirements described in (5) and (6) above. These stock ownership and transfer restrictions are described in the accompanying prospectus under the heading “Description of Securities—Restrictions on Transfer.” If we fail to satisfy these share ownership requirements, except as provided in the next sentence, our status as a REIT will terminate. If, however, we comply with the rules contained in applicable Treasury Regulations that require us to ascertain the actual ownership of our shares and we do not know, or would not have known through the exercise of reasonable diligence, that we failed to meet the requirement described in condition (6) above, we will be treated as having met this requirement. See the section below entitled “—Failure to Qualify.”

In addition, we may not maintain our status as a REIT unless our taxable year is the calendar year. We have and will continue to have a calendar taxable year.

Ownership of Interests in Partnerships, Limited Liability Companies and Qualified REIT Subsidiaries. In the case of a REIT which is a partner in a partnership or a member in a limited liability company treated as a partnership for federal income tax purposes, Treasury Regulations provide that the REIT will be deemed to own its proportionate share of the assets of the partnership or limited liability company, as the case may be, based on its interest in partnership capital, subject to special rules relating to the 10% REIT asset test described below. Also, the REIT will be deemed to be entitled to its proportionate share of the income of that entity. The assets and gross income of the partnership or limited liability company retain the same character in the hands of the REIT for purposes of Section 856 of the Code, including satisfying the gross income tests and the asset tests. Thus, our pro rata share of the assets and items of income of our operating partnership, including our operating partnership’s share of these items of any partnership or limited liability company in which it owns an interest, are treated as our assets and items of income for purposes of applying the requirements described in this prospectus supplement, including the income and asset tests described below. A brief summary of the rules governing the federal income taxation of partnerships and limited liability companies is set forth below in “—Tax Aspects of Our Operating Partnership, the Subsidiary Partnerships and the Limited Liability Companies.”

We have direct control of our operating partnership and indirect control of some subsidiary partnerships and limited liability companies, and we intend to operate them in a manner consistent with the requirements for our qualification as a REIT. However, we are a limited partner or non-managing member in some of our partnerships and limited liability companies. If a partnership or limited liability company in which we own an interest takes or expects to take actions that could jeopardize our status as a REIT or require us to pay tax, we may be forced to dispose of our interest in such entity. In addition, it is possible that a partnership or limited liability company could take an action which could cause us to fail a REIT income or asset test, and that we would not become aware of such action in time to dispose of our interest in the partnership or limited liability company or take other corrective action on a timely basis. In that case, we could fail to qualify as a REIT unless we were entitled to relief, as described below.

We may from time to time own and operate certain properties through wholly-owned subsidiaries that we intend to be treated as “qualified REIT subsidiaries” under the Code. A corporation will qualify as our qualified REIT subsidiary if we own 100% of the corporation’s outstanding stock, and if we do not elect with the subsidiary to treat it as a “taxable REIT subsidiary,” as described below. A corporation that is a qualified REIT subsidiary is not treated as a separate corporation, and all assets, liabilities and items of

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income, deduction and credit of a qualified REIT subsidiary are treated as assets, liabilities and items of income, deduction and credit (as the case may be) of the parent REIT for all purposes under the Code (including all REIT qualification tests). Thus, in applying the federal tax requirements described in this prospectus supplement, any corporations in which we own a 100% interest (other than any taxable REIT subsidiaries) are ignored, and all assets, liabilities and items of income, deduction and credit of such corporations are treated as our assets, liabilities and items of income, deduction and credit. A qualified REIT subsidiary is not required to pay federal income tax, and our ownership of the stock of a qualified REIT subsidiary does not violate the restrictions on ownership of securities, as described below under “—Asset Tests.”

Ownership of Interests in Taxable REIT Subsidiaries. A taxable REIT subsidiary is a corporation other than a REIT in which a REIT directly or indirectly holds stock, and that has made a joint election with such REIT to be treated as a taxable REIT subsidiary. A taxable REIT subsidiary also includes any corporation other than a REIT with respect to which a taxable REIT subsidiary owns securities possessing more than 35% of the total voting power or value of the outstanding securities of such corporation. Other than some activities relating to lodging and health care facilities, a taxable REIT subsidiary may generally engage in any business, including the provision of customary or non-customary services to tenants of its parent REIT. A taxable REIT subsidiary is subject to income tax as a regular C corporation. In addition, a taxable REIT subsidiary may be prevented from deducting interest on debt funded directly or indirectly by its parent REIT if certain tests regarding the taxable REIT subsidiary’s debt to equity ratio and interest expense are not satisfied. A REIT’s ownership of securities of taxable REIT subsidiaries will not be subject to the 10% or 5% asset test described below, and their operations will be subject to the provisions described above. See “—Asset Tests.” We own an interest in a number of taxable REIT subsidiaries and may acquire securities in additional taxable REIT subsidiaries in the future.

Income Tests. We must satisfy two gross income requirements annually to maintain our qualification as a REIT. First, in each taxable year we must derive directly or indirectly at least 75% of our gross income, excluding gross income from prohibited transactions, from investments relating to real property or mortgages on real property, including “rents from real property” and, in certain circumstances, interest, or certain types of temporary investments. Second, in each taxable year we must derive at least 95% of our gross income, excluding gross income from prohibited transactions and certain hedges of indebtedness, from the real property investments described above or dividends, interest and gain from the sale or disposition of stock or securities, or from any combination of the foregoing. For these purposes, the term “interest” generally does not include any amount received or accrued, directly or indirectly, if the determination of all or some of the amount depends in any way on the income or profits of any person. However, an amount received or accrued generally will not be excluded from the term “interest” solely by reason of being based on a fixed percentage or percentages of receipts or sales.

Rents we receive from a tenant will qualify as “rents from real property” for the purpose of satisfying the gross income requirements for a REIT described above only if all of the following conditions are met:

• The amount of rent must not be based in any way on the income or profits of any person. However, an amount we receive or accrue generally will not be excluded from the term “rents from real property” solely because it is based on a fixed percentage or percentages of receipts or sales;

• We, or an actual or constructive owner of 10% or more of our capital stock, must not actually or constructively own 10% or more of the interests in the tenant, or, if the tenant is a corporation, 10% or more of the voting power or value of all classes of stock of the tenant. Rents received from such tenant that is a taxable REIT subsidiary, however, will not be excluded from the definition of “rents from real property” as a result of this condition if at least 90% of the space at the property to which the rents relate is leased to third parties, and the rents paid by the taxable REIT subsidiary are comparable to rents paid by our other tenants for comparable space. Whether rents paid by a taxable REIT subsidiary are substantially comparable to rents paid by other tenants is determined at the time the lease with the taxable REIT subsidiary is entered into, extended, and modified, if such modification increases the

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rents due under such lease. Notwithstanding the foregoing, however, if a lease with a “controlled taxable REIT subsidiary” is modified and such modification results in an increase in the rents payable by such taxable REIT subsidiary, any such increase will not qualify as “rents from real property.” For purposes of this rule, a “controlled taxable REIT subsidiary” is a taxable REIT subsidiary in which we own stock possessing more than 50% of the voting power or more than 50% of the total value of the outstanding stock of such taxable REIT subsidiary;

• Rent attributable to personal property, leased in connection with a lease of real property, is not greater than 15% of the total rent received under the lease. If this condition is not met, then the portion of the rent attributable to personal property will not qualify as “rents from real property”; and

• We generally must not operate or manage the property or furnish or render services to our tenants, subject to a 1%de minimisexception and except as provided below. We may, however, perform services that are “usually or customarily rendered” in connection with the rental of space for occupancy only and are not otherwise considered “rendered to the occupant” of the property. Examples of these services include the provision of light, heat, or other utilities, trash removal and general maintenance of common areas. In addition, we may employ an independent contractor from whom we derive no revenue to provide customary services, or a taxable REIT subsidiary, which may be wholly or partially owned by us, to provide both customary and non-customary services to our tenants without causing the rent we receive from those tenants to fail to qualify as “rents from real property.” Any amounts we receive from a taxable REIT subsidiary with respect to the taxable REIT subsidiary’s provision of non-customary services will, however, be nonqualifying income under the 75% gross income test and, except to the extent received through the payment of dividends, the 95% REIT gross income test.

We generally do not intend, and as a general partner of our operating partnership, do not intend to permit our operating partnership, to take actions we believe will cause us to fail to satisfy the rental conditions described above. However, we may intentionally fail to satisfy some of these conditions to the extent the failure will not, based on the advice of our tax counsel, jeopardize our tax status as a REIT. In addition, with respect to the limitation on the rental of personal property, we have not obtained appraisals of the real property and personal property leased to tenants. Accordingly, there can be no assurance that the IRS will not disagree with our determinations of value.

Income we receive that is attributable to the rental of parking spaces at the properties will constitute rents from real property for purposes of the REIT gross income tests if certain services provided with respect to the parking spaces are performed by independent contractors from whom we derive no revenue, either directly or indirectly, or by a taxable REIT subsidiary, and certain other conditions are met. We believe that the income we receive that is attributable to parking spaces meets these tests and, accordingly, will constitute rents from real property for purposes of the REIT gross income tests.

The REIT income tests described above prevent us from operating, directly or through a manager, a hotel, including the hotel at Plaza Las Fuentes. Consequently, we lease the hotel at Plaza Las Fuentes to a taxable REIT subsidiary of ours in exchange for its payment of rent. In order for the rent payable under this lease to constitute “rents from real property,” the lease must be respected as a true lease for federal income tax purposes and not treated as a service contract, joint venture, or some other type of arrangement. We believe that the Plaza Las Fuentes Westin lease is a true lease for federal income tax purposes. However, this determination is inherently a question of fact, and we cannot assure you that the IRS will not successfully assert that the Plaza Las Fuentes Westin lease should not be respected as a true lease for federal income tax purposes. If the Plaza Las Fuentes Westin lease is not respected as a true lease, part or all of the payments that our operating partnership receives as rent from our taxable REIT subsidiary, or our taxable REIT subsidiary’s gross revenues, may not be considered rent or may not otherwise satisfy the various requirements for qualification as “rents from real property.” In that case, we may not be able to satisfy either the 75% or 95% gross income test and, as a result, could fail to qualify as a REIT.

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In addition, as stated above, for rents we receive to qualify as “rents from real property,” we must not own, actually or constructively, 10% or more of the stock of a corporate lessee or 10% or more of the interests in the assets or net profits of a non-corporate lessee. However, this rule will not apply to our lease of the Plaza Las Fuentes Westin provided we lease the hotel to a taxable REIT subsidiary, and provided the following requirements are satisfied:

• The Plaza Las Fuentes Westin must be a “qualified lodging facility.” A qualified lodging facility is a hotel, motel or other establishment more than one-half of the dwelling units in which are used on a transient basis. Further, no wagering activities may be conducted at or in connection with such facility by any person who is engaged in the business of accepting wagers and who is legally authorized to engage in such business at or in connection with such facility. A qualified lodging facility includes amenities and facilities operated as part of, or associated with, the lodging facility as long as such amenities and facilities are customary for other properties of a comparable size and class owned by other unrelated owners.

• The Plaza Las Fuentes Westin must be operated on behalf of our taxable REIT subsidiary by a person who qualifies as an “eligible independent contractor,” which means that (i) such person cannot own, directly or indirectly (taking into account constructive ownership rules), more than 35% of the REIT’s shares, (ii) no person or group of persons owning, directly or indirectly (taking into account constructive ownership rules), 35% or more of the REIT’s outstanding shares may own, directly or indirectly (taking into account constructive ownership rules), more than 35% of the ownership interests in the contractor, and (iii) while the statutory language is unclear on this point, the REIT may not be able to derive any income from the contractor or bear the expenses of the contractor, other than expenses of operating the facility under the management contract. Further, the independent contractor (or a person related to the independent contractor) must be actively engaged in the trade or business of operating “qualified lodging facilities” for any person that is not related to us or our taxable REIT subsidiary.

We formed one of our taxable REIT subsidiaries in part to act as the lessee of the Plaza Las Fuentes Westin. We believe that the Plaza Las Fuentes Westin constitutes a “qualified lodging facility” and that our taxable REIT subsidiary has engaged an “eligible independent contractor” from whom we do not derive any income, to operate and manage the hotel on behalf of our taxable REIT subsidiary. Thus, we believe that the rents we derive from our taxable REIT subsidiary with respect to the Plaza Las Fuentes Westin lease qualify for this exception to the related party rent rule.

From time to time, we enter into hedging transactions with respect to one or more of our assets or liabilities. The term “hedging transaction” generally means any transaction we enter into in the normal course of our business primarily to manage risk of interest rate changes or fluctuations with respect to borrowings made or to be made. Our hedging activities may include entering into interest rate swaps, caps, and floors, options to purchase these items, and futures and forward contracts. Any income we derive from a hedging transaction will be nonqualifying income for purposes of the 75% gross income test. Except to the extent provided by Treasury Regulations, however, income from a hedging transaction, including gain from the sale or disposition of such a transaction, entered into prior to January 1, 2005, will be qualifying income for purposes of the 95% gross income test, but only to the extent that the transaction hedges interest rate risk on indebtedness incurred or to be incurred by us to acquire or carry real estate. Income from such a hedging transaction entered into on or after January 1, 2005 that is clearly identified as such as specified in the Code will not constitute gross income for purposes of the 95% gross income test, and therefore will be exempt from this test. To the extent that we do not properly identify such transactions as hedges or hedge with other types of financial instruments, the income from those transactions will not be treated as qualifying income for purposes of the gross income tests. We intend to structure any hedging transactions in a manner that does not jeopardize our status as a REIT.

To the extent our taxable REIT subsidiaries pay dividends, we generally will derive our allocable share of such dividend income through our interest in our operating partnership. Such dividend income will qualify under the 95%, but not the 75%, REIT gross income test. In addition, our operating partnership

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provides management and administrative services to our taxable REIT subsidiaries, limited liabilities companies in which we own an interest and certain other properties. The fees derived by our operating partnership as a result of the provision of such services may be nonqualifying income to us under both the 95% and 75% REIT gross income tests. We will monitor the amount of the dividend and other income from our taxable REIT subsidiaries and the fee income earned by our operating partnership and will take actions intended to keep this income, and any other nonqualifying income, within the limitations of the REIT income tests. While we expect these actions will prevent a violation of the REIT income tests, we cannot guarantee that such actions will in all cases prevent such a violation.

If we fail to satisfy one or both of the 75% or 95% gross income tests for any taxable year, we may nevertheless qualify as a REIT for the year if we are entitled to relief under certain provisions of the Code. Commencing with our taxable year beginning January 1, 2005, we generally may make use of the relief provisions if:

• following our identification of the failure to meet the 75% or 95% gross income tests for any taxable year, we file a schedule with the IRS setting forth each item of our gross income for purposes of the 75% or 95% gross income tests for such taxable year in accordance with Treasury Regulations to be issued; and

• our failure to meet these tests was due to reasonable cause and not due to willful neglect.

It is not possible, however, to state whether in all circumstances we would be entitled to the benefit of these relief provisions. For example, if we fail to satisfy the gross income tests because nonqualifying income that we intentionally accrue or receive exceeds the limits on nonqualifying income, the IRS could conclude that our failure to satisfy the tests was not due to reasonable cause. If these relief provisions do not apply to a particular set of circumstances, we will not qualify as a REIT. As discussed above in “—Taxation of Our Company— General,” even if these relief provisions apply, and we retain our status as a REIT, a tax would be imposed with respect to our nonqualifying income. We may not always be able to comply with the gross income tests for REIT qualification despite periodic monitoring of our income.

Prohibited Transaction Income. Any gain that we realize on the sale of property held as inventory or otherwise held primarily for sale to customers in the ordinary course of business, including our share of any such gain realized by our operating partnership, either directly or through its subsidiary partnerships and limited liability companies, will be treated as income from a prohibited transaction that is subject to a 100% penalty tax. This prohibited transaction income may also adversely affect our ability to satisfy the income tests for qualification as a REIT. Under existing law, whether property is held as inventory or primarily for sale to customers in the ordinary course of a trade or business is a question of fact that depends on all the facts and circumstances surrounding the particular transaction. Our operating partnership intends to hold its properties for investment with a view to long-term appreciation, to engage in the business of acquiring, developing and owning its properties and to make occasional sales of the properties as are consistent with our operating partnership’s investment objectives. We do not intend to enter into any sales that are prohibited transactions. However, the IRS may successfully contend that some or all of the sales made by our operating partnership or its subsidiary partnerships or limited liability companies are prohibited transactions. We would be required to pay the 100% penalty tax on our allocable share of the gains resulting from any such sales. From time to time, we acquire certain properties that we do not intend to hold for investment purposes through a taxable REIT subsidiary which is not subject to the 100% penalty tax on prohibited transactions. Any gain recognized by the taxable REIT subsidiary upon the sale of such property, and any income earned by the taxable REIT subsidiary while it operated such property before such sale, would be subject to regular federal corporate taxation.

Penalty Tax. Any redetermined rents, redetermined deductions or excess interest we generate will be subject to a 100% penalty tax. In general, redetermined rents are rents from real property that are overstated as a result of any services furnished to any of our tenants by one of our taxable REIT subsidiaries, and redetermined deductions and excess interest represent any amounts that are deducted by a taxable REIT subsidiary for amounts paid to us that are in excess of the amounts that would have been deducted based on arm’s-length negotiations. Rents we receive will not constitute redetermined rents if they qualify for certain safe harbor provisions contained in the Code.

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From time to time, our taxable REIT subsidiaries may provide services to our tenants. We intend to set the fees paid to our taxable REIT subsidiaries for such services at arm’s-length rates, although the fees paid may not satisfy the safe-harbor provisions described above. We also believe that the rent paid by our taxable REIT subsidiary to our operating partnership pursuant to the Plaza Las Fuentes Westin lease reflects an arm’s-length charge. However, these determinations are inherently factual, and the IRS has broad discretion to assert that amounts paid between related parties should be reallocated to clearly reflect their respective incomes. If the IRS successfully made such an assertion, we would be required to pay a 100% penalty tax on the excess of an arm’s-length fee for tenant services over the amount actually paid.

Asset Tests. At the close of each quarter of our taxable year, we must also satisfy four tests relating to the nature and diversification of our assets. First, at least 75% of the value of our total assets must be represented by real estate assets, cash, cash items and government securities. For purposes of this test, the term “real estate assets” generally means real property (including interests in real property and interests in mortgages on real property) and shares (or transferable certificates of beneficial interest) in other REITs, as well as any stock or debt instrument attributable to the investment of the proceeds of a stock offering or a public offering of debt with a term of at least five years, but only for the one-year period beginning on the date the REIT receives such proceeds.

Second, not more than 25% of the value of our total assets may be represented by securities, other than those securities includable in the 75% asset test.

Third, of the investments included in the 25% asset class, and except for investments in other REITs, our qualified REIT subsidiaries and taxable REIT subsidiaries, the value of any one issuer’s securities may not exceed 5% of the value of our total assets, and we may not own more than 10% of the total vote or value of the outstanding securities of any one issuer except, in the case of the 10% value test, securities satisfying the “straight debt” safe-harbor. Certain types of securities we may own are disregarded as securities solely for purposes of the 10% value test, including, but not limited to, any loan to an individual or an estate, any obligation to pay rents from real property and any security issued by a REIT. In addition, commencing with our taxable year beginning January 1, 2005, solely for purposes of the 10% value test, the determination of our interest in the assets of a partnership or limited liability company in which we own an interest will be based on our proportionate interest in any securities issued by the partnership or limited liability company, excluding for this purpose certain securities described in the Code.

Fourth, not more than 20% of the value of our total assets may be represented by the securities of one or more taxable REIT subsidiaries.

Our operating partnership owns the stock of certain corporations that have elected, together with us, to be treated as our taxable REIT subsidiaries. So long as each of these companies qualifies as a taxable REIT subsidiary, we will not be subject to the 5% asset test, the 10% voting securities limitation or the 10% value limitation with respect to our ownership of their stock. We may acquire securities in other taxable REIT subsidiaries in the future. We believe that the aggregate value of our taxable REIT subsidiaries does not exceed, and believe that in the future it will not exceed, 20% of the aggregate value of our gross assets. No independent appraisals have been obtained to support these conclusions. In addition, there can be no assurance that the IRS will agree with our determinations of value.

The asset tests must be satisfied at the close of each calendar quarter of our taxable year in which we (directly or through our operating partnership) acquire securities in the applicable issuer, and also at the close of each calendar quarter in which we increase our ownership of securities of such issuer (including as a result of increasing our interest in our operating partnership). For example, our indirect ownership of securities of each issuer will increase as a result of our capital contributions to our operating partnership or as limited partners exercise their redemption/exchange rights. After initially meeting the asset tests at the close of any quarter, we will not lose our status as a REIT for failure to satisfy the asset tests at the end of a later quarter solely by reason of changes in asset values. If we fail to satisfy an asset test because we

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acquire securities or other property during a quarter (including as a result of an increase in our interest in our operating partnership), we may cure this failure by disposing of sufficient nonqualifying assets within 30 days after the close of that quarter. We believe that we have maintained and intend to maintain adequate records of the value of our assets to ensure compliance with the asset tests. If we failed to cure any noncompliance with the asset tests within the 30 day cure period, we would cease to qualify as a REIT unless we are eligible for certain relief provisions discussed below.

Certain relief provisions may be available to us if we discover a failure to satisfy the asset tests described above after the 30 day cure period. Under these provisions, we will be deemed to have met the 5% and 10% REIT asset tests if the value of our nonqualifying assets (i) does not exceed the lesser of (a) 1% of the total value of our assets at the end of the applicable quarter or (b) $10,000,000, and (ii) we dispose of the nonqualifying assets or otherwise satisfy such tests within (a) six months after the last day of the quarter in which the failure to satisfy the asset tests is discovered or (b) the period of time prescribed by Treasury Regulations to be issued. For violations of any of the asset tests due to reasonable cause and not due to willful neglect and that are, in the case of the 5% and 10% asset tests, in excess of the de minimis exception described above, we may avoid disqualification as a REIT after the 30 day cure period by taking steps including (i) the disposition of sufficient nonqualifying assets, or the taking of other actions, which allow us to meet the asset test within (a) six months after the last day of the quarter in which the failure to satisfy the asset tests is discovered or (b) the period of time prescribed by Treasury Regulations to be issued, (ii) paying a tax equal to the greater of (a) $50,000 or (b) the highest corporate tax rate multiplied by the net income generated by the nonqualifying assets, and (iii) disclosing certain information to the IRS.

Although we believe we have satisfied the asset tests described above and plan to take steps to ensure that we satisfy such tests for any quarter with respect to which retesting is to occur, there can be no assurance we will always be successful, or will not require a reduction in our operating partnership’s overall interest in an issuer (including in a taxable REIT subsidiary). If we fail to cure any noncompliance with the asset tests in a timely manner, and the relief provisions described above are not available, we would cease to qualify as a REIT.

Annual Distribution Requirements. To maintain our qualification as a REIT, we are required to distribute dividends, other than capital gain dividends, to our stockholders in an amount at least equal to the sum of:

• 90% of our “REIT taxable income”; and

• 90% of our after tax net income from foreclosure property, if any; minus

• the excess of the sum of certain items of non-cash income over 5% of our “REIT taxable income.”

For these purposes, our “REIT taxable income” is computed without regard to the dividends paid deduction and our net capital gain. In addition, for purposes of this test, non-cash income means income attributable to leveled stepped rents, original issue discount on purchase money debt, cancellation of indebtedness, or a like-kind exchange that is later determined to be taxable.

In addition, if we dispose of any asset we acquired from a corporation which is or has been a C corporation in a transaction in which our basis in the asset is determined by reference to the basis of the asset in the hands of that C corporation, within the ten-year period following our acquisition of such asset, we would be required to distribute at least 90% of the after-tax gain, if any, we recognized on the disposition of the asset, to the extent that gain does not exceed the excess of (a) the fair market value of the asset over (b) our adjusted basis in the asset, in each case, on the date we acquired the asset.

We generally must pay, or be treated as paying, the distributions described above in the taxable year to which they relate. At our election, a distribution will be treated as paid in a taxable year if it is declared before we timely file our tax return for such year and paid on or before the first regular dividend payment after such declaration, provided such payment is made during the 12-month period following the close of

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such year. These distributions are taxable to our stockholders, other than tax-exempt entities, in the year in which paid. This is so even though these distributions relate to the prior year for purposes of the 90% distribution requirement. The amount distributed must not be preferential — i.e., every stockholder of the class of stock to which a distribution is made must be treated the same as every other stockholder of that class, and no class of stock may be treated otherwise than according to its dividend rights as a class. To the extent that we do not distribute all of our net capital gain, or distribute at least 90%, but less than 100%, of our “REIT taxable income,” as adjusted, we will be required to pay tax on the undistributed amount at regular corporate tax rates. We believe we have made, and intend to continue to make timely distributions sufficient to satisfy these annual distribution requirements and to minimize our corporate tax obligations. In this regard, the partnership agreement of our operating partnership authorizes us, as general partner of our operating partnership, to take such steps as may be necessary to cause our operating partnership to distribute to its partners an amount sufficient to permit us to meet these distribution requirements and to minimize our corporate tax obligation.

We expect that our REIT taxable income will be less than our cash flow because of depreciation and other non-cash charges included in computing REIT taxable income. Accordingly, we anticipate that we generally will have sufficient cash or liquid assets to enable us to satisfy the distribution requirements described above. However, from time to time, we may not have sufficient cash or other liquid assets to meet these distribution requirements due to timing differences between the actual receipt of income and actual payment of deductible expenses, and the inclusion of income and deduction of expenses in determining our taxable income. If these timing differences occur, we may borrow funds to pay dividends or pay dividends in the form of taxable stock dividends in order to meet the distribution requirements.

Under some circumstances, we may be able to rectify an inadvertent failure to meet the 90% distribution requirement for a year by paying “deficiency dividends” to our stockholders in a later year, which may be included in our deduction for dividends paid for the earlier year. Thus, we may be able to avoid being taxed on amounts distributed as deficiency dividends, subject to the 4% excise tax described below. However, we will be required to pay interest to the IRS based upon the amount of any deduction claimed for deficiency dividends.

Furthermore, we will be required to pay a 4% excise tax to the extent we fail to distribute during each calendar year at least the sum of 85% of our REIT ordinary income for such year, 95% of our REIT capital gain income for the year and any undistributed taxable income from prior periods. Any REIT taxable income and net capital gain on which this excise tax is imposed for any year is treated as an amount distributed during that year for purposes of calculating such tax.

For purposes of the distribution requirements and excise tax described above, distributions declared during the last three months of the taxable year, payable to stockholders of record on a specified date during such period and paid during January of the following year, will be treated as paid by us and received by our stockholders on December 31 of the year in which they are declared.

Like-Kind Exchanges. We may dispose of properties in transactions intended to qualify as like-kind exchanges under the Code. Such like-kind exchanges are intended to result in the deferral of gain for federal income tax purposes. The failure of any such transaction to qualify as a like-kind exchange could subject us to federal income tax, possibly including the 100% prohibited transaction tax, depending on the facts and circumstances surrounding the particular transaction.

Failure To Qualify

Commencing with our taxable year beginning January 1, 2005, specified cure provisions are available to us in the event that we discover a violation of a provision of the Code that would result in our failure to qualify as a REIT. Except with respect to violations of the REIT income tests and asset tests (for which the cure provisions are described above), and provided the violation is due to reasonable cause and not due to willful neglect, these cure provisions generally impose a $50,000 penalty for each violation in lieu of a loss of REIT status. If we fail to qualify for taxation as a REIT in any taxable year, and the relief provisions do not apply, we will be required to pay tax, including any applicable alternative minimum tax, on our taxable

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income at regular corporate rates. Distributions to stockholders in any year in which we fail to qualify as a REIT will not be deductible by us, and we will not be required to distribute any amounts to our stockholders. As a result, we anticipate that our failure to qualify as a REIT would reduce the cash available for distribution by us to our stockholders. In addition, if we fail to qualify as a REIT, all distributions to stockholders will be taxable as regular corporate dividends to the extent of our current and accumulated earnings and profits. In this event, corporate distributees may be eligible for the dividends-received deduction. Unless entitled to relief under specific statutory provisions, we will also be ineligible to elect to be treated as a REIT for the four taxable years following the year during which we lost our qualification. It is not possible to state whether in all circumstances we would be entitled to this statutory relief.

Tax Aspects of Our Operating Partnership, the Subsidiary Partnerships and the Limited Liability Companies

General. All of our investments are held indirectly through our operating partnership. In addition, our operating partnership holds certain of its investments indirectly through subsidiary partnerships and limited liability companies which we expect will be treated as partnerships or disregarded entities for federal income tax purposes. In general, entities that are classified as partnerships or disregarded entities for federal income tax purposes are “pass-through” entities which are not required to pay federal income tax. Rather, partners or members of such entities are allocated their shares of the items of income, gain, loss, deduction and credit of the partnership or limited liability company, and are potentially required to pay tax on this income, without regard to whether they receive a distribution from the partnership or limited liability company. We will include in our income our share of these partnership and limited liability company items for purposes of the various REIT income tests and in the computation of our REIT taxable income. Moreover, for purposes of the REIT asset tests, we will include our pro rata share of assets held by our operating partnership, including its share of its subsidiary partnerships and limited liability companies, based on our capital interests. See “—Taxation of Our Company.”

Entity Classification. Our interests in our operating partnership and the subsidiary partnerships and limited liability companies involve special tax considerations, including the possibility that the IRS might challenge the status of these entities as partnerships (or disregarded entities), as opposed to associations taxable as corporations for federal income tax purposes. If our operating partnership or a subsidiary partnership or limited liability company were treated as an association, it would be taxable as a corporation and would be required to pay an entity-level tax on its income. In this situation, the character of our assets and items of gross income would change and could prevent us from satisfying the REIT asset tests and possibly the REIT income tests. See “—Taxation of Our Company—Asset Tests” and “—Income Tests.” This, in turn, could prevent us from qualifying as a REIT. See “—Failure to Qualify” for a discussion of the effect of our failure to meet these tests. In addition, a change in the tax status of our operating partnership, a subsidiary partnership or limited liability company might be treated as a taxable event. If so, we might incur a tax liability without any related cash distributions. We believe our operating partnership and each of our other partnerships and limited liability companies will be classified as partnerships or disregarded entities for federal income tax purposes.

Allocations of Income, Gain, Loss and Deduction. The operating partnership agreement generally provides that items of operating income will be allocated to us to the extent of the accrued preferred return on our preferred units and then to the holders of common units in proportion to the number of common units held by each such unit holder. Items of operating loss will generally be allocated first to the holders of common units in proportion to the number of common units held, and then to us with respect to our preferred units. Certain limited partners have agreed to guarantee debt of our operating partnership, either directly or indirectly through an agreement to make capital contributions to our operating partnership under limited circumstances. As a result of these guaranties or contribution agreements, and notwithstanding the foregoing discussion of allocations of income and loss of our operating partnership to holders of units, such limited partners could under limited circumstances be allocated a disproportionate amount of net loss upon a liquidation of our operating partnership, which net loss would have otherwise been allocable to us.

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If an allocation of partnership income or loss does not comply with the requirements of Section 704(b) of the Code and the Treasury Regulations thereunder, the item subject to the allocation will be reallocated in accordance with the partners’ interests in the partnership. This reallocation will be determined by taking into account all of the facts and circumstances relating to the economic arrangement of the partners with respect to such item. Our operating partnership’s allocations of taxable income and loss are intended to comply with the requirements of Section 704(b) of the Code and the Treasury Regulations thereunder.

Tax Allocations With Respect to the Properties. Under Section 704(c) of the Code, income, gain, loss and deduction attributable to appreciated or depreciated property that is contributed to a partnership in exchange for an interest in the partnership, must be allocated in a manner so that the contributing partner is charged with the unrealized gain or benefits from the unrealized loss associated with the property at the time of the contribution. The amount of the unrealized gain or unrealized loss generally is equal to the difference between the fair market value or book value and the adjusted tax basis of the contributed property at the time of contribution, as adjusted from time to time. These allocations are solely for federal income tax purposes and do not affect the book capital accounts or other economic or legal arrangements among the partners.

Appreciated property was contributed to our operating partnership in exchange for interests in our operating partnership in connection with the formation transactions. The partnership agreement requires that these allocations be made in a manner consistent with Section 704(c) of the Code. Treasury Regulations issued under Section 704(c) of the Code provide partnerships with a choice of several methods of accounting for book-tax differences. We and our operating partnership have agreed to use the “traditional method” for accounting for book-tax differences for the properties initially contributed to our operating partnership. Under the traditional method, which is the least favorable method from our perspective, the carryover basis of contributed interests in the properties in the hands of our operating partnership (i) will or could cause us to be allocated lower amounts of depreciation deductions for tax purposes than would be allocated to us if all contributed properties were to have a tax basis equal to their fair market value at the time of the contribution and (ii) could cause us to be allocated taxable gain in the event of a sale of such contributed interests or properties in excess of the economic or book income allocated to us as a result of such sale, with a corresponding benefit to the other partners in our operating partnership. An allocation described in (ii) above might cause us or the other partners to recognize taxable income in excess of cash proceeds in the event of a sale or other disposition of property, which might adversely affect our ability to comply with the REIT distribution requirements. See “—Taxation of Our Company— Requirements for Qualification as a REIT” and “—Annual Distribution Requirements.”

Any property acquired by our operating partnership in a taxable transaction will initially have a tax basis equal to its fair market value, and Section 704(c) of the Code will not apply.

Federal Income Tax Considerations for Holders of Our Capital Stock

The following summary describes the principal United States federal income tax consequences to you of purchasing, owning and disposing of our capital stock. This summary assumes you hold shares of our capital stock as a “capital asset” (generally, property held for investment within the meaning of Section 1221 of the Code). It does not address all the tax consequences that may be relevant to you in light of your particular circumstances. In addition, this discussion does not address the tax consequences relevant to persons who receive special treatment under the federal income tax law, except where specifically noted. Holders receiving special treatment include, without limitation:

• financial institutions, banks and thrifts;

• insurance companies;

• tax-exempt organizations;

• “S” corporations;

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• traders in securities that elect to mark to market;

• partnerships, pass-through entities and persons holding our stock through a partnership or other pass-through entity;

• stockholders subject to the alternative minimum tax;

• regulated investment companies and REITs;

• foreign corporations or partnerships, and persons who are not residents or citizens of the United States;

• broker-dealers or dealers in securities or currencies;

• United States expatriates;

• persons holding our stock as a hedge against currency risks or as a position in a straddle; or

• U.S. stockholders (as defined below) whose functional currency is not the United States dollar.

If you are considering purchasing our capital stock, you should consult your tax advisors concerning the application of United States federal income tax laws to your particular situation as well as any consequences of the purchase, ownership and disposition of our capital stock arising under the laws of any state, local or foreign taxing jurisdiction.

When we use the term “U.S. stockholder,” we mean a holder of shares of our capital stock who, for United States federal income tax purposes, is:

• a citizen or resident of the United States;

• a corporation, including an entity treated as a corporation for United States federal income tax purposes, created or organized in or under the laws of the United States or of any state thereof or in the District of Columbia;

• an estate the income of which is subject to United States federal income taxation regardless of its source; or

• a trust, if a United States court can exercise primary supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, or if the trust has a valid election in place to be treated as a United States person.

If you hold shares of our capital stock and are not a U.S. stockholder, you are a “non-U.S. stockholder.”

Taxation of Taxable U.S. Stockholders

Distributions Generally. Distributions out of our current or accumulated earnings and profits will be treated as dividends and, other than with respect to capital gain dividends and certain amounts which have previously been subject to corporate level tax discussed below, will be taxable to our taxable U.S. stockholders as ordinary income when actually or constructively received. See “—Tax Rates” below. As long as we qualify as a REIT, these distributions will not be eligible for the dividends-received deduction in the case of U.S. stockholders that are corporations. For purposes of determining whether distributions to holders of our stock are out of current or accumulated earnings and profits, our earnings and profits will be allocated first to our outstanding preferred stock and then to our outstanding common stock.

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To the extent that we make distributions on our capital stock in excess of our current and accumulated earnings and profits allocable to such stock, these distributions will be treated first as a tax-free return of capital to a U.S. stockholder. This treatment will reduce the adjusted tax basis which the U.S. stockholder has in such shares of stock by the amount of the distribution, but not below zero. Distributions in excess of our current and accumulated earnings and profits and in excess of a U.S. stockholder’s adjusted tax basis in its shares will be taxable as capital gain. Such gain will be taxable as long-term capital gain if the shares have been held for more than one year. Dividends we declare in October, November, or December of any year and which are payable to a stockholder of record on a specified date in any of these months will be treated as both paid by us and received by the stockholder on December 31 of that year, provided we actually pay the dividend on or before January 31 of the following year. U.S. stockholders may not include in their own income tax returns any of our net operating losses or capital losses.

Capital Gain Dividends. Dividends that we properly designate as capital gain dividends will be taxable to our taxable U.S. stockholders as a gain from the sale or disposition of a capital asset, to the extent that such gain does not exceed our actual net capital gain for the taxable year. If we properly designate any portion of a dividend as a capital gain dividend then, except as otherwise required by law, we presently intend to allocate a portion of the total capital gain dividends paid or made available to holders of all classes of our capital stock for the year to the holders of each class of our capital stock in proportion to the amount that our total dividends, as determined for United States federal income tax purposes, paid or made available to the holders of each such class of our capital stock for the year bears to the total dividends, as determined for United States federal income tax purposes, paid or made available to holders of all classes of our capital stock for the year.

Retention of Net Capital Gains. We may elect to retain, rather than distribute as a capital gain dividend, all or a portion of our net capital gains. If we make this election, we would pay tax on our retained net capital gains. In addition, to the extent we so elect, a U.S. stockholder generally would:

• include its pro rata share of our undistributed net capital gains in computing its long-term capital gains in its return for its taxable year in which the last day of our taxable year falls, subject to certain limitations as to the amount that is includable;

• be deemed to have paid the capital gains tax imposed on us on the designated amounts included in the U.S. stockholder’s long-term capital gains;

• receive a credit or refund for the amount of tax deemed paid by it;

• increase the adjusted basis of its stock by the difference between the amount of includable gains and the tax deemed to have been paid by it; and

• in the case of a U.S. stockholder that is a corporation, appropriately adjust its earnings and profits for the retained capital gains in accordance with Treasury Regulations to be promulgated by the IRS.

Passive Activity Losses and Investment Interest Limitations. Distributions we make and gain arising from the sale or exchange by a U.S. stockholder of our shares will not be treated as passive activity income. As a result, U.S. stockholders generally will not be able to apply any “passive losses” against this income or gain. A U.S. stockholder may elect to treat capital gain dividends, capital gains from the disposition of our stock and income designated as qualified dividend income, described in “—Tax Rates” below, as investment income for purposes of computing the investment interest limitation, but in such case, the stockholder will be taxed at ordinary income rates on such amount. Other distributions made by the Company, to the extent they do not constitute a return of capital, generally will be treated as investment income for purposes of computing the investment interest limitation.

Dispositions of Our Capital Stock. If a U.S. stockholder sells or disposes of shares of capital stock, it will recognize gain or loss for federal income tax purposes in an amount equal to the difference between the amount of cash and the fair market value of any property received on the sale or other disposition and

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the holder’s adjusted basis in the shares for tax purposes. This gain or loss, except as provided below, will be long-term capital gain or loss if the holder has held such capital stock for more than one year. However, if a U.S. stockholder recognizes loss upon the sale or other disposition of capital stock that it has held for six months or less, after applying certain holding period rules, the loss recognized will be treated as a long-term capital loss to the extent the U.S. stockholder received distributions from us which were required to be treated as long-term capital gains.

Tax Rates

The maximum tax rate for non-corporate taxpayers for (1) capital gains, including certain “capital gain dividends,” has generally been reduced to 15% (although depending on the characteristics of the assets which produced these gains and on designations which we may make, certain capital gain dividends may be taxed at a 25% rate) and (2) “qualified dividend income” has generally been reduced to 15%. In general, dividends payable by REITs are not eligible for the reduced tax rate on corporate dividends, except to the extent that certain holding requirements have been met and the REIT’s dividends are attributable to dividends received from taxable corporations (such as its taxable REIT subsidiaries) or to income that was subject to tax at the corporate/REIT level (for example, if it distributed taxable income that it retained and paid tax on in the prior taxable year). The currently applicable provisions of the United States federal income tax laws relating to the 15% tax rate are currently scheduled to “sunset” or revert to the provisions of prior law effective for taxable years beginning after December 31, 2010, at which time the capital gains tax rate will be increased to 20% and the rate applicable to dividends will be increased to the tax rate then applicable to ordinary income. U.S. stockholders that are corporations may be required to treat up to 20% of some capital gain dividends as ordinary income.

Backup Withholding

We report to our U.S. stockholders and the IRS the amount of dividends paid during each calendar year, and the amount of any tax withheld. Under the backup withholding rules, a stockholder may be subject to backup withholding with respect to dividends paid unless the holder is a corporation or comes within certain other exempt categories and, when required, demonstrates this fact, or provides a taxpayer identification number, certifies as to no loss of exemption from backup withholding, and otherwise complies with applicable requirements of the backup withholding rules. A U.S. stockholder that does not provide us with its correct taxpayer identification number may also be subject to penalties imposed by the IRS. Backup withholding is not an additional tax. Any amount paid as backup withholding will be creditable against the stockholder’s federal income tax liability, provided the required information is furnished to the IRS. In addition, we may be required to withhold a portion of capital gain distributions to any stockholders who fail to certify their non-foreign status. See “—Taxation of Non-U.S. Stockholders.”

Taxation of Tax-Exempt Stockholders

Dividend income from us and gain arising upon a sale of our shares generally will not be unrelated business taxable income to a tax-exempt stockholder, except as described below. This income or gain will be unrelated business taxable income, however, if a tax-exempt stockholder holds its shares as “debt-financed property” within the meaning of the Code or if the shares are used in a trade or business of the tax-exempt stockholder. Generally, “debt-financed property” is property the acquisition or holding of which was financed through a borrowing by the tax-exempt stockholder.

For tax-exempt stockholders which are social clubs, voluntary employee benefit associations, supplemental unemployment benefit trusts, or qualified group legal services plans exempt from federal income taxation under Sections 501(c)(7), (c)(9), (c)(17) or (c)(20) of the Code, respectively, income from an investment in our shares will constitute unrelated business taxable income unless the organization is able to properly claim a deduction for amounts set aside or placed in reserve for specific purposes so as to offset the income generated by its investment in our shares. These prospective investors should consult their tax advisors concerning these “set aside” and reserve requirements.

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Notwithstanding the above, however, a portion of the dividends paid by a “pension-held REIT” may be treated as unrelated business taxable income as to certain trusts that hold more than 10%, by value, of the interests in the REIT. A REIT will not be a “pension-held REIT” if it is able to satisfy the “not closely held” requirement without relying on the “look-through” exception with respect to certain trusts or if such REIT is not “predominantly held” by “qualified trusts.” As a result of limitations on the transfer and ownership of stock contained in our charter, we do not expect to be classified as a “pension-held REIT,” and as a result, the tax treatment described in this paragraph should be inapplicable to our stockholders. However, because our stock will be publicly traded, we cannot guarantee that this will always be the case.

Taxation of Non-U.S. Stockholders

The following discussion addresses the rules governing United States federal income taxation of the purchase, ownership and disposition of our capital stock by non-U.S. stockholders. These rules are complex, and no attempt is made herein to provide more than a brief summary of such rules. Accordingly, the discussion does not address all aspects of United States federal income taxation and does not address state, local or foreign tax consequences that may be relevant to a non-U.S. stockholder in light of its particular circumstances. We urge non-U.S. stockholders to consult their tax advisors to determine the impact of federal, state, local and foreign income tax laws on the purchase, ownership, and disposition of shares of our capital stock, including any reporting requirements.

Distributions Generally. Distributions that are neither attributable to gain from sales or exchanges by us of United States real property interests nor designated by us as capital gain dividends will be treated as dividends of ordinary income to the extent that they are made out of our current or accumulated earnings and profits. Such distributions ordinarily will be subject to withholding of United States federal income tax at a 30% rate or such lower rate as may be specified by an applicable income tax treaty, unless the distributions are treated as effectively connected with the conduct by the non-U.S. stockholder of a United States trade or business. Under certain treaties, however, lower withholding rates generally applicable to dividends do not apply to dividends from a REIT. Certain certification and disclosure requirements must be satisfied to be exempt from withholding under the effectively connected income exemption. Dividends that are treated as effectively connected with such a trade or business will be subject to tax on a net basis at graduated rates, in the same manner as dividends paid to U.S. stockholders are subject to tax, and are generally not subject to withholding. Any such dividends received by a non-U.S. stockholder that is a corporation may also be subject to an additional branch profits tax at a 30% rate or such lower rate as may be specified by an applicable income tax treaty.

Except with respect to certain distributions attributable to the sale of United States real property interests as described below, we expect to withhold United States income tax at the rate of 30% on any distributions made to a non-U.S. stockholder unless:

(1) a lower treaty rate applies and the non-U.S. stockholder files with us an IRS Form W-8BEN evidencing eligibility for that reduced treaty rate; or

(2) the non-U.S. stockholder files an IRS Form W-8ECI with us claiming that the distribution is income effectively connected with the non-U.S. stockholder’s trade or business.

Distributions in excess of our current and accumulated earnings and profits will not be taxable to a non-U.S. stockholder to the extent that such distributions do not exceed the adjusted basis of the stockholder’s capital stock, but rather will reduce the adjusted basis of such stock. To the extent that such distributions exceed the non-U.S. stockholder’s adjusted basis in such capital stock, they will give rise to gain from the sale or exchange of such stock, the tax treatment of which is described below. For withholding purposes, we expect to treat all distributions as made out of our current or accumulated earnings and profits. However, amounts withheld should generally be refundable if it is subsequently determined that the distribution was, in fact, in excess of our current and accumulated earnings and profits.

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Capital Gain Dividends and Distributions Attributable to a Sale or Exchange of United States Real Property Interests. Distributions to a non-U.S. stockholder that we properly designate as capital gain dividends, other than those arising from the disposition of a United States real property interest, generally should not be subject to United States federal income taxation, unless:

(1) the investment in our stock is treated as effectively connected with the non-U.S. stockholder’s United States trade or business, in which case the non-U.S. stockholder will be subject to the same treatment as U.S. stockholders with respect to such gain, except that a non-U.S. stockholder that is a foreign corporation may also be subject to the 30% branch profits tax, as discussed above; or

(2) the non-U.S. stockholder is a nonresident alien individual who is present in the United States for 183 days or more during the taxable year and certain other conditions are met, in which case the nonresident alien individual will be subject to a 30% tax on the individual’s capital gains.

Pursuant to the Foreign Investment in Real Property Tax Act, which is referred to as “FIRPTA,” distributions to a non-U.S. stockholder that are attributable to gain from sales or exchanges by us of United States real property interests, whether or not designated as capital gain dividends, will cause the non-U.S. stockholder to be treated as recognizing such gain as income effectively connected with a United States trade or business. Non-U.S. stockholders would thus generally be taxed at the same rates applicable to U.S. stockholders, subject to a special alternative minimum tax in the case of nonresident alien individuals. We also will be required to withhold and to remit to the IRS 35% of any distribution to non-U.S. stockholders that is designated as a capital gain dividend or, if greater, 35% of a distribution to non-U.S. stockholders that could have been designated as a capital gain dividend. The amount withheld is creditable against the non-U.S. stockholder’s United States federal income tax liability. However, any distribution with respect to any class of stock which is “regularly traded” on an established securities market located in the United States is not subject to FIRPTA, and therefore, not subject to the 35% U.S. withholding tax described above, if the non-U.S. stockholder did not own more than 5% of such class of stock at any time during the one-year period ending on the date of the distribution. Instead, such distributions will be treated as ordinary dividend distributions.

Retention of Net Capital Gains. Although the law is not clear on the matter, it appears that amounts designated by us as retained capital gains in respect of the stock held by U.S. stockholders generally should be treated with respect to non-U.S. stockholders in the same manner as actual distributions of capital gain dividends. Under that approach, the non-U.S. stockholders would be able to offset as a credit against their United States federal income tax liability resulting from their proportionate share of the tax paid by us on such retained capital gains and to receive from the IRS a refund to the extent their proportionate share of such tax paid by us exceeds their actual United States federal income tax liability.

Sale of Our Capital Stock. Gain recognized by a non-U.S. stockholder upon the sale, exchange or other taxable disposition of our capital stock generally will not be subject to United States taxation unless such stock constitutes a “United States real property interest,” or USRPI, within the meaning of FIRPTA. Our capital stock will not constitute a USRPI so long as we are a “domestically controlled qualified investment entity.” A “domestically controlled qualified investment entity” includes a REIT in which at all times during a specified testing period less than 50% in value of its stock is held directly or indirectly by non-U.S. stockholders. We believe, but cannot guarantee, that we have been a “domestically controlled qualified investment entity.”Even if we have been a “domestically controlled qualified investment entity,” because most of our capital stock is publicly traded, no assurance can be given that we will continue to be a “domestically controlled qualified investment entity.”

Notwithstanding the foregoing, gain from the sale, exchange or other taxable disposition of our capital stock not otherwise subject to FIRPTA will be taxable to a non-U.S. stockholder if either (a) the investment in our capital stock is treated as effectively connected with the non-U.S. stockholder’s United States trade or business or (b) the non-U.S. stockholder is a nonresident alien individual who is present in the United States for 183 days or more during the taxable year and certain other conditions are met. In addition, even if we are a domestically controlled qualified investment entity, upon disposition of our stock (subject to the 5% exception applicable to “regularly traded” stock described above), a non-U.S. stockholder may be treated as having gain from the sale or other taxable disposition of a United States real property interest if the non-U.S. stockholder (1) disposes of our stock within a 30-day period preceding the ex-dividend date of

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a distribution, any portion of which, but for the disposition, would have been treated as gain from the sale or exchange of a United States real property interest and (2) acquires, or enters into a contract or option to acquire, or is deemed to acquire, other shares of that stock within 30 days after such ex-dividend date.

Even if we do not qualify as a “domestically controlled qualified investment entity” at the time a non-U.S. stockholder sells our stock, gain arising from the sale or other taxable disposition by a non-U.S. stockholder of such stock would not be subject to United States taxation under FIRPTA as a sale of a USRPI if:

(1) such class of stock is “regularly traded,” as defined by applicable Treasury Regulations, on an established securities market such as the NYSE; and

(2) such non-U.S. stockholder owned, actually and constructively, 5% or less of such class of our stock throughout the five-year period ending on the date of the sale or exchange.

If gain on the sale, exchange or other taxable disposition of our capital stock were subject to taxation under FIRPTA, the non-U.S. stockholder would be subject to regular United States federal income tax with respect to such gain in the same manner as a taxable U.S. stockholder (subject to any applicable alternative minimum tax and a special alternative minimum tax in the case of nonresident alien individuals). In addition, if the sale, exchange or other taxable disposition of our capital stock were subject to taxation under FIRPTA, and if shares of the applicable class of our capital stock were not “regularly traded” on an established securities market, the purchaser of such capital stock would be required to withhold and remit to the IRS 10% of the purchase price.

Backup Withholding Tax and Information Reporting. Generally, we must report annually to the IRS the amount of dividends paid to a non-U.S. stockholder, such holder’s name and address, and the amount of tax withheld, if any. A similar report is sent to the non-U.S. stockholder. Pursuant to tax treaties or other agreements, the IRS may make its reports available to tax authorities in the non-U.S. stockholder’s country of residence.

Payments of dividends or of proceeds from the disposition of stock made to a non-U.S. stockholder may be subject to information reporting and backup withholding unless such holder establishes an exemption, for example, by properly certifying its non-United States status on an IRS Form W-8BEN or another appropriate version of IRS Form W-8. Notwithstanding the foregoing, backup withholding and information reporting may apply if either we have or our paying agent has actual knowledge, or reason to know, that a non-U.S. stockholder is a United States person.

Backup withholding is not an additional tax. Rather, the United States income tax liability of persons subject to backup withholding will be reduced by the amount of tax withheld. If withholding results in an overpayment of taxes, a refund or credit may be obtained, provided that the required information is furnished to the IRS.

Other Tax Consequences

State, local and foreign income tax laws may differ substantially from the corresponding federal income tax laws, and this discussion does not purport to describe any aspect of the tax laws of any state, local or foreign jurisdiction. You should consult your tax advisor regarding the effect of state, local and foreign tax laws with respect to our tax treatment as a REIT and on an investment in our capital stock.

SELLING STOCKHOLDERS

The “selling stockholders” are the people or entities who have received or may receive shares of our common stock registered pursuant to this prospectus supplement and the accompanying prospectus upon exchange of common units (if we elect to provide common stock instead of cash upon redemptions, at our option). The following table provides the names of the selling stockholders, the maximum number of shares of our common stock issued or issuable to such selling stockholders in the exchange and the aggregate number of

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shares of our common stock that will be owned by such selling stockholders after the exchange. The number of shares on the following table represents the number of shares of our common stock into which common units held by the selling stockholders are exchangeable, including those shares that have been issued in exchanges effected to date. Since the selling stockholders may sell all, some or none of their shares, we cannot estimate the aggregate number of shares that the selling stockholders will offer pursuant to this prospectus supplement and the accompanying prospectus or that the selling stockholders will own upon completion of the offering to which this prospectus supplement and the accompanying prospectus relates.

The selling stockholders named below may from time to time offer the shares of our common stock offered by this prospectus supplement and the accompanying prospectus:

	Shares of our Common Stock Owned Prior to the Exchange(1)	Number of Shares of our Common Stock Issued or Issuable in the Exchange and Available for Resale	Shares of our Common Stock Owned Following the Exchange(1)(2)			Maximum Number of Shares of our Common Stock to be Resold	Shares of our Common Stock Owned After Resale(1)(3)
Name			Shares	Percent			Shares	Percent
Robert F. Maguire III(4)	194,000	4,202,388	4,396,388	8.5	%	4,202,388	194,000	*
Maguire Partners BGHS, LLC(5)	—	99,131	99,131	*		99,131	—	—
Bunker Hill Equity, LLC(5)	—	324,912	324,912	*		324,912	—	—
Maguire Partners - Investments, LLC(5)	—	2,601,163	2,601,163	5.2	%	2,601,163	—	—
Maguire Partners - Master Investments, LLC(6)	—	52,632	52,632	*		52,632	—	—
Thomas Master Investments, LLC	—	60,526	60,526	*		60,526	—	—
William Thomas Allen(7)	—	65,164	65,164	*		65,164	—	—
		7,405,916	7,599,916			7,405,916
Maguire Partners - WFC Holdings, LLC(5)(8)		1,567,810	1,567,810	3.2	%	1,567,810	—	—
		8,973,726	9,167,726			8,973,726

* Less than 1.0%.

⁽¹⁾ Represents shares of our common stock purchased by Mr. Maguire in the open market.

⁽²⁾ Assumes that we elect to exchange the common units of the selling stockholders for shares of our common stock on a one-for-one basis rather than for cash. The percentage ownership is determined for each selling stockholder by taking into account the issuance and sale of shares of our common stock issued in exchange for common units of only such selling stockholder. Also assumes that no transactions with respect to our common stock or common units occur other than the exchange. The number of shares of our common stock used in this calculation was 47,185,636, the number of shares outstanding as of February 22, 2008, as reported by us in our Annual Report on Form 10-K filed with the SEC on February 29, 2008.

⁽³⁾ Assumes the selling stockholders sell all of their shares of our common stock offered pursuant to this prospectus supplement and the accompanying prospectus. The percentage ownership is determined for each selling stockholder by taking into account the issuance and sale of shares of our common stock issued in exchange for common units of only such selling stockholder. The number of shares of our common stock used in this calculation was 47,185,636, the number of shares outstanding as of February 22, 2008, as reported by us in our Annual Report on Form 10-K filed with the SEC on February 29, 2008.

⁽⁴⁾ Mr. Maguire serves as our Chairman and Chief Executive Officer. Prior to joining our company, Mr. Maguire served as the managing partner of Maguire Partners Development, Ltd., one of the predecessor entities of our company.

⁽⁵⁾ This entity is 100% owned by Mr. Maguire.

⁽⁶⁾ This entity is 55% owned by Mr. Maguire and 10% owned by Richard I. Gilchrist, our former President and Co-Chief Executive Officer.

⁽⁷⁾ Mr. Allen served as a partner of Maguire Partners Development, Ltd., one of the predecessor entities of our company.

⁽⁸⁾ Maguire Partners – WFC Holdings, LLC has previously exchanged 2,393,729 common units for shares of our common stock on a one-for-one basis. As of the date of this prospectus supplement, 1,567,810 shares of our common stock acquired upon exchange are still held by Maguire Partners – WFC Holdings, LLC.

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PLAN OF DISTRIBUTION

This prospectus supplement relates to:

• the issuance by us of up to 7,405,916 shares of our common stock if, and to the extent that, the selling stockholders tender their common units for redemption and we elect, in our sole and absolute discretion, to exchange such common units for common stock in lieu of a cash redemption; and

• the offer and sale from time to time of some or all of up to 8,973,726 shares of common stock (1,567,810 shares previously issued and 7,405,916 shares potentially to be issued) by the selling stockholders.

We are registering the shares of our common stock to provide the holders with freely tradable securities, but the registration of these shares does not necessarily mean that any of these shares will be offered or sold by the holders.

We will not receive any proceeds from the issuance of the shares of our common stock to the selling stockholders or from the sale of such shares by the selling stockholders, but we have agreed to pay the following expenses of the registration of such shares:

• all registration and filing fees;

• fees and expenses for complying with securities or blue sky laws, including reasonable fees and disbursements of counsel in connection with blue sky qualifications; and

• the fees and expenses incurred in connection with listing our common stock on each securities exchange on which our similar securities issued are then listed.

We have no obligation to pay any underwriting fees, discounts or commissions attributable to the exchange of common units for our common stock by the selling stockholders or from the resale of such common stock by the selling stockholders. We also have no obligation to pay any out-of-pocket expenses of the selling stockholders, or the agents who manage their accounts, or any transfer taxes relating to the registration or sale of our common stock contemplated hereby.

The selling stockholders may from time to time sell the shares of our common stock covered by this prospectus supplement directly to purchasers. Alternatively, the selling stockholders may from time to time offer such shares through dealers or agents, who may receive compensation in the form of commissions from the selling stockholders and for the purchasers of such shares for whom they may act as agent. The selling stockholders and any dealers or agents that participate in the distribution of such shares may be deemed to be “underwriters” within the meaning of the Securities Act and any profit on the sale of our common stock by them and any commissions received by any of these dealers or agents might be deemed to be underwriting commissions under the Securities Act.

In connection with distribution of the shares of our common stock covered by this prospectus supplement:

• the selling stockholders may enter into hedging transactions with broker-dealers;

• the broker-dealers may engage in short sales of our common stock in the course of hedging the positions they assume with the selling stockholders;

• the selling stockholders may sell our common stock short and deliver our common stock to close out these short positions;

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• the selling stockholders may enter into option or other transactions with broker-dealers that involve the delivery of our common stock to the broker-dealers, who may then resell or otherwise transfer our common stock; and

• the selling stockholders may loan or pledge our common stock to a broker-dealer or other person or entity and the broker-dealer or other person or entity may sell our common stock so loaned or upon a default may sell or otherwise transfer the pledged stock.

Persons participating in the distribution of the shares of our common stock offered by this prospectus may engage in transactions that stabilize the price of our common stock. The anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of our common stock in the market and to the activities of the selling stockholders.

WHERE YOU CAN FIND MORE INFORMATION

We file our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statements and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act with the SEC. We have filed with the SEC a Registration Statement on Form S-3, of which this prospectus supplement and the accompanying prospectus are a part, including exhibits, schedules and amendments filed with, or incorporated by reference in, the registration statement, under the Securities Act, with respect to the shares of our common stock covered by this prospectus supplement. This prospectus supplement does not contain all of the information set forth in the registration statement and exhibits and schedules to the registration statement. For further information with respect to our company and the shares of our common stock covered by this prospectus supplement, reference is made to the registration statement, including the exhibits to the registration statement. Statements contained in this prospectus supplement as to the contents of any contract or other document referred to in, or incorporated by reference in, this prospectus supplement are not necessarily complete and, where that contract is an exhibit to the registration statement, each statement is qualified in all respects by the exhibit to which the reference relates.

The public may read and copy any materials that we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains a website that contains reports, proxy and other information regarding issuers that file electronically with the SEC athttp://www.sec.gov.

Our website address ishttp://www.maguireproperties.com. We make available on our website, free of charge, our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statements and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after such materials are electronically filed with, or furnished to, the SEC. In addition, our board of directors maintains a charter for each of its committees and has adopted a written set of corporate governance guidelines and a code of business conduct and ethics. The public may access on our website, free of charge, these committee charters, corporate governance guidelines and code of business conduct and ethics. Website addresses referred to in this prospectus are not intended to function as hyperlinks, and the information contained on our website is not a part of this prospectus.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The SEC allows us to “incorporate by reference” the information we file with the SEC, which means that we can disclose important information to you by referring to those documents. The information incorporated by reference is an important part of this prospectus supplement. The incorporated documents contain significant information about us, our business and our finances. Information included or

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incorporated by reference in this prospectus supplement and the accompanying prospectus shall be deemed automatically updated and superseded if information contained in any document we subsequently file with the SEC prior to the termination of this offering modifies or replaces the information included or incorporated by reference in this prospectus supplement.

We incorporate by reference the following documents we filed with the SEC:

• our Annual Report on Form 10-K for the year ended December 31, 2007;

• our Current Report on Form 8-K filed with the SEC on March 5, 2008;

• our Current Report on Form 8-K filed with the SEC on December 12, 2007;

• our Current Report on Form 8-K filed with the SEC on October 3, 2007;

• our Current Report on Form 8-K filed with the SEC on October 2, 2007;

• our Current Report on Form 8-K filed with the SEC on June 11, 2007; and

• all documents filed by us with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus supplement and prior to the termination of the offering of the underlying securities.

We will provide without charge to each person, including any beneficial owner, to whom a prospectus supplement is delivered, on written or oral request of that person, a copy of any or all of the documents we are incorporating by reference into this prospectus supplement, other than exhibits to those documents unless those exhibits are specifically incorporated by reference into those documents. A written request should be addressed to Jonathan Abrams, Senior Vice President, General Counsel and Secretary, Maguire Properties, Inc., 1733 Ocean Avenue, Suite 400, Santa Monica, California 90401.

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