ALEXANDRIA REAL ESTATE EQUITIES, INC.
                     1997 STOCK AWARD AND INCENTIVE PLAN



                                        
                       ALEXANDRIA REAL ESTATE EQUITIES, INC.
                        1997 STOCK AWARD AND INCENTIVE PLAN

          1.   PURPOSE; TYPES OF AWARDS; CONSTRUCTION.

          The purpose of the Alexandria Real Estate Equities, Inc. 1997 Stock 
Award and Incentive Plan  (the "Plan") is to afford an incentive to selected 
officers, employees and independent contractors (including non-employee 
directors) of Alexandria Real Estate Equities, Inc. (the "Company"), or any 
Subsidiary or Affiliate that now exists or hereafter is organized or 
acquired, to acquire a proprietary interest in the Company, to continue as 
employees or independent contractors (including non-employee directors), as 
the case may be, to increase their efforts on behalf of the Company and to 
promote the success of the Company's business.  Pursuant to Section 6 of the 
Plan, there may be granted Options (including "incentive stock options" and 
"nonqualified stock options"), Stock Appreciation Rights, Restricted Stock, 
and Other Stock-Based Awards or Other Cash-Based Awards.  The Plan also 
provides the authority to make loans to purchase shares of Stock.  From and 
after the consummation of the Initial Public Offering, the Plan is designed 
to comply with the requirements of Regulation G (12 C.F.R. Section 207) 
regarding the purchase of shares on margin, the requirements for 
"performance-based compensation" under Section 162(m) of the Code and the 
conditions for exemption from short-swing profit recovery rules under Rule 
16b-3 of the Exchange Act, and shall be interpreted in a manner consistent 
with the requirements thereof.

          2.   DEFINITIONS.

               2.1  For purposes of the Plan, the following terms shall be 
defined as set forth below:

                    (a) "Affiliate" means any entity if, at the time of 
granting of an Award or a Loan, (i) the Company, directly or indirectly, owns 
at least 20% of the combined voting power of all classes of stock of such 
entity or at least 20% of the ownership interests in such entity or (ii) such 
entity, directly or indirectly, owns at least 20% of the combined voting 
power of all classes of stock of the Company.



                    (b) "Award" means any Option, SAR, Restricted Stock, or 
Other Stock-Based Award or Other Cash-Based Award granted under the Plan.

                    (c) "Award Agreement" means any written agreement, 
contract, or other instrument or document evidencing an Award.

                    (d) "Beneficiary" means the person, persons, trust or 
trusts that have been designated by a Grantee in his or her most recent 
written beneficiary designation filed with the Company to receive the 
benefits specified under the Plan upon his or her death, or, if there is no 
designated Beneficiary or surviving designated Beneficiary, then the person, 
persons, trust or trusts entitled by will or the laws of descent and 
distribution to receive such benefits.

                    (e) "Board" means the Board of Directors of the Company.

                    (f) "Change of Control" shall mean the occurrence of any 
of the following events:

                         (i)   Any Person (as such term is used in section 
3(a)(9) of the Exchange Act, as modified and used in sections 13(d) and 14(d) 
thereof, except that such term shall not include (A) the Company or any of 
its subsidiaries, (B) a trustee or other fiduciary holding securities under 
an employee benefit plan of the Company or any of its affiliates, (C) an 
underwriter temporarily holding securities pursuant to an offering of such 
securities, (D) a corporation owned, directly or indirectly, by the 
stockholders of the Company in substantially the same proportions as their 
ownership of stock of the Company, or (E) a person or group as used in Rule 
13d-1(b) under the Exchange Act) that is or becomes the Beneficial Owner, as 
such term is defined in Rule 13d-3 under the Exchange Act, directly or 
indirectly, of securities of the Company (not including in the securities 
beneficially owned by such Person any securities acquired directly from the 
Company or its affiliates other than in connection with the acquisition by 
the Company or its affiliates of a business) representing twenty-five percent 
(25%) or more of the combined voting power of the Company's then outstanding 
securities; or

                         (ii)  The following individuals cease for any reason 
to constitute a majority of the number of directors then serving:  
individuals 

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who, on the date hereof, constitute the Board and any new director (other 
than a director whose initial assumption of office is in connection with an 
actual or threatened election contest, including but not limited to a consent 
solicitation, relating to the election of directors of the Company) whose 
appointment or election by the Board or nomination for election by the 
Company's stockholders was approved or recommended by a vote of at least 
two-thirds (2/3) of the directors then still in office who either were 
directors on the date hereof or whose appointment, election or nomination for 
election was previously so approved or recommended; or

                         (iii) There is consummated a merger or consolidation 
of the Company with any other corporation, other than (A) a merger or 
consolidation that would result in the voting securities of the Company 
outstanding immediately prior to such merger or consolidation continuing to 
represent (either by remaining outstanding or by being converted into voting 
securities of the surviving entity or any parent thereof), in combination 
with the ownership of any trustee or other fiduciary holding securities under 
an employee benefit plan of the Company or any subsidiary of the Company, at 
least seventy-five percent (75%) of the combined voting power of the 
securities of the Company or such surviving entity or any parent thereof 
outstanding immediately after such merger or consolidation, or (B) a merger 
or consolidation effected to implement a recapitalization of the Company (or 
similar transaction) in which no Person is or becomes the Beneficial Owner, 
directly or indirectly, of securities of the Company (not including in the 
securities beneficially owned by such Person any securities acquired directly 
from the Company or its affiliates other than in connection with the 
acquisition by the Company or its affiliates of a business) representing 
twenty-five percent (25%) or more of the combined voting power of the 
Company's then outstanding securities; or 

                         (iv)  The stockholders of the Company approve a plan 
of complete liquidation or dissolution of the Company or there is consummated 
an agreement for the sale or disposition by the Company of all or 
substantially all of the Company's assets, other than a sale or disposition 
by the Company of all or substantially all of the Company's assets to an 
entity, at least seventy-five (75%) of the combined voting power of the 
voting securities of which are owned by stockholders of the Company in 
substantially the same proportions as their ownership of the Company 
immediately prior to such sale.

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                    (g) "Code" means the Internal Revenue Code of 1986, as 
amended from time to time.

                    (h) "Committee" means the Board or the committee 
designated or established by the Board to administer the Plan from and after 
the consummation of the Initial Public Offering, the composition of which 
shall at all times satisfy the provisions of Rule 16b-3.  With respect to the 
period prior to consummation of the Initial Public Offering, references to 
the "Committee" shall be deemed to refer to the Board or to the Compensation 
Committee of the Board.

                    (i) "Company" means Alexandria Real Estate Equities, 
Inc., a corporation organized under the laws of the State of Maryland, or any 
successor corporation.

                    (j) "Exchange Act" means the Securities Exchange Act of 
1934, as amended from time to time, and as now or hereafter construed, 
interpreted and applied by regulations, rulings and cases.

                    (k) "Fair Market Value" means, with respect to Stock or 
other property, the fair market value of such Stock or other property 
determined by such methods or procedures as shall be established from time to 
time by the Committee.  Unless otherwise determined by the Committee in good 
faith, the per share Fair Market Value of Stock as of a particular date shall 
mean (i) the closing sales price per share of Stock on the national 
securities exchange on which the Stock is principally traded for the last 
preceding date on which there was a sale of such Stock on such exchange, or 
(ii) if the shares of Stock are then traded in an over-the-counter market, 
the average of the closing bid and ask prices for the shares of Stock in such 
over-the-counter market for the last preceding date on which there was a sale 
of such Stock in such market, or (iii) if the shares of Stock are not then 
listed on a national securities exchange or traded in an over-the-counter 
market, such value as the Committee, in its sole discretion, shall determine.

                    (l) "Grantee" means a person who, as an employee or 
independent contractor of the Company, a Subsidiary or an Affiliate, has been 
granted an Award or Loan under the Plan.

                    (m) "Initial Public Offering" shall mean the initial public
offering of shares of Stock of the Company, as more fully described in the

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Registration Statement on Form S-11 filed with the Securities and Exchange 
Commission on March 18, 1997, as such Registration Statement may be amended 
from time to time.

                    (n) "Incentive Stock Option" or "ISO" means any Option 
intended to be and designated as an incentive stock option within the meaning 
of Section 422 of the Code.

                    (o) "Loan" means the proceeds from the Company borrowed 
by a Plan participant under Section 8 of the Plan.

                    (p) "Non-Employee Director" means any director who is not 
an employee of the Company or any of its subsidiaries or affiliates.  For 
purposes of this Plan, such non-employee director shall be treated as an 
independent contractor.

                    (q) "Nonqualified Stock Option" or "NQSO" means any 
Option that is designated as a nonqualified stock option.

                    (r) "Option" means a right, granted to a Grantee under 
Section 6.2, to purchase shares of Stock.  An Option may be either an ISO or 
an NQSO; PROVIDED THAT ISOs may be granted only to employees of the Company 
or of a Subsidiary.

                    (s) "Other Cash-Based Award" means cash awarded to a 
Grantee under Section 6.6, including cash awarded as a bonus or upon the 
attainment of specified performance objectives or otherwise as permitted 
under the Plan.

                    (t) "Other Stock-Based Award" means a right or other 
interest granted to a Grantee under Section 6.6 that may be denominated or 
payable in, valued in whole or in part by reference to, or otherwise based 
on, or related to, Stock, including, but not limited to (1) unrestricted 
Stock awarded as a bonus or upon the attainment of specified performance 
objectives or otherwise as permitted under the Plan and (2) a right granted 
to a Grantee to acquire Stock from the Company for cash and/or a promissory 
note containing terms and conditions prescribed by the Committee.

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                    (u)  "Plan" means this Alexandria Real Estate Equities, 
Inc. 1997 Stock Award and Incentive Plan, as amended from time to time.

                    (v)  "Restricted Stock" means an Award of shares of Stock 
to a Grantee under Section 6.4 that may be subject to certain restrictions 
and to a risk of forfeiture.

                    (w)  "Rule 16b-3" means Rule 16b-3, as from time to time 
in effect promulgated by the Securities and Exchange Commission under Section 
16 of the Exchange Act, including any successor to such Rule.

                    (x)  "Securities Act" means the Securities Act of 1933, as 
amended from time to time, and as now or hereafter construed, interpreted and 
applied by the regulations, rulings and cases.

                    (y)  "Stock" means shares of the common stock, par value 
$.01 per share, of the Company.

                    (z)  "Stock Appreciation Right" or "SAR" means the right, 
granted to a Grantee under Section 6.3, to be paid an amount measured by the 
appreciation in the Fair Market Value of Stock from the date of grant to the 
date of exercise of the right, with payment to be made in cash, Stock, or 
property as specified in the Award or determined by the Committee.

                    (aa) "Subsidiary" means any corporation (other than the 
Company) in an unbroken chain of corporations beginning with the Company if, 
at the time of granting of an Award, each of the corporations (other than the 
last corporation in the unbroken chain) owns stock possessing 50% or more of 
the total combined voting power of all classes of stock in one of the other 
corporations in the chain.

          3.   ADMINISTRATION.

          The Plan shall be administered by the Committee.  The Committee 
shall have the authority in its discretion, subject to and not inconsistent 
with the express provisions of the Plan, to administer the Plan and to 
exercise all the powers and authorities either specifically granted to it 
under the Plan or necessary or advisable in the administration of the Plan 
including, without limitation, the 

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authority to grant Awards and make Loans; to determine the persons to whom 
and the time or times at which Awards shall be granted and Loans shall be 
made; to determine the type and number of Awards to be granted and the amount 
of any Loan, the number of shares of Stock to which an Award may relate and 
the terms, conditions, restrictions and performance criteria relating to any 
Award or Loan; and to determine whether, to what extent, and under what 
circumstances an Award may be settled, cancelled, forfeited, exchanged, or 
surrendered; to make adjustments in the terms and conditions of, and the 
criteria and performance objectives (if any) included in, Awards and Loans in 
recognition of unusual or non-recurring events affecting the Company or any 
Subsidiary or Affiliate or the financial statements of the Company or any 
Subsidiary or Affiliate, or in response to changes in applicable laws, 
regulations, or accounting principles; to designate Affiliates; to construe 
and interpret the Plan and any Award or Loan; to prescribe, amend and rescind 
rules and regulations relating to the Plan; to determine the terms and 
provisions of the Award Agreements and any promissory note or agreement 
related to any Loan (which need not be identical for each Grantee); and to 
make all other determinations deemed necessary or advisable for the 
administration of the Plan.

          The Committee may appoint a chairperson and a secretary and may 
make such rules and regulations for the conduct of its business as it shall 
deem advisable, and shall keep minutes of its meetings.  All determinations 
of the Committee shall be made by a majority of its members either present in 
person or participating by conference telephone at a meeting or by written 
consent.  The Committee may delegate to one or more of its members or to one 
or more agents such administrative duties as it may deem advisable, and the 
Committee or any person to whom it has delegated duties as aforesaid may 
employ one or more persons to render advice with respect to any 
responsibility the Committee or such person may have under the Plan.  All 
decisions, determinations and interpretations of the Committee shall be final 
and binding on all persons, including the Company, and any Subsidiary, 
Affiliate or Grantee (or any person claiming any rights under the Plan from 
or through any Grantee) and any stockholder.

          No member of the Board or Committee shall be liable for any action 
taken or determination made in good faith with respect to the Plan or any 
Award granted or Loan made hereunder.

          4.   ELIGIBILITY.

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          Subject to the provisions set forth below, Awards and Loans may be 
granted to selected employees, officers and independent contractors 
(including Non-Employee Directors) of the Company and its present or future 
Subsidiaries and Affiliates, in the discretion of the Committee; PROVIDED 
THAT ISOs may be granted only to employees of the Company or of a Subsidiary. 
 In determining the persons to whom Awards and Loans shall be granted and the 
type (including the number of shares to be covered) of any Award or the 
amount of any Loan, the Committee shall take into account such factors as the 
Committee shall deem relevant in connection with accomplishing the purposes 
of the Plan.

          5.   STOCK SUBJECT TO THE PLAN.

          The maximum number of shares of Stock reserved for the grant of 
Awards under the Plan shall be 900,000, subject to adjustment as provided 
herein.  No more than 100% of the total shares available for grant may be 
awarded to a single individual in a single year.  Such shares may, in whole 
or in part, be authorized but unissued shares or shares that shall have been 
or may be reacquired by the Company in the open market, in private 
transactions or otherwise.  If any shares subject to an Award are forfeited, 
cancelled, exchanged or surrendered, or if an Award otherwise terminates or 
expires without a distribution of shares to the Grantee, the shares of stock 
with respect to such Award shall, to the extent of any such forfeiture, 
cancellation, exchange, surrender, termination or expiration, again be 
available for Awards under the Plan; PROVIDED THAT, in the case of 
forfeiture, cancellation, exchange or surrender of shares of Restricted Stock 
with respect to which dividends have been paid or accrued, the number of 
shares with respect to such Awards shall not be available for Awards 
hereunder unless, in the case of shares with respect to which dividends were 
accrued but unpaid, such dividends are also forfeited, cancelled, exchanged 
or surrendered.  Upon the exercise of any Award granted in tandem with any 
other Awards or awards, such related Awards or awards shall be cancelled to 
the extent of the number of shares of Stock as to which the Award is 
exercised and, notwithstanding the foregoing, such number of shares shall no 
longer be available for Awards under the Plan.

          In the event that the Committee shall determine that any dividend 
or other distribution (whether in the form of cash, Stock, or other 
property), recapitalization, stock split, reverse split, reorganization, 
merger, consolidation, spin-off, combination, repurchase, or share exchange, 
or other similar corporate transaction or event, affects the Stock such that 
an adjustment is appropriate in order to prevent dilution or enlargement of 
the rights of Grantees under the Plan, 

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then the Committee shall make such equitable changes or adjustments as it 
deems necessary or appropriate to any or all of (a) the number and kind of 
shares of Stock which may thereafter be issued in connection with Awards, (b) 
the number and kind of shares of Stock issued or issuable in respect of 
outstanding Awards, and (c) the exercise price, grant price, or purchase 
price relating to any Award; PROVIDED THAT, with respect to ISOs, such 
adjustment shall be made in accordance with Section 424(h) of the Code. 

          6.   SPECIFIC TERMS OF AWARDS.

               6.1  GENERAL.  The term of each Award shall be for such period 
as may be determined by the Committee.  Subject to the terms of the Plan and 
any applicable Award Agreement, payments to be made by the Company or a 
Subsidiary or Affiliate upon the grant, maturation, or exercise of an Award 
may be made in such forms as the Committee shall determine at the date of 
grant or thereafter, including, without limitation, cash, Stock, or other 
property, and may be made in a single payment or transfer, in installments, 
or on a deferred basis.  The Committee may make rules relating to installment 
or deferred payments with respect to Awards, including the rate of interest 
to be credited with respect to such payments.  In addition to the foregoing, 
the Committee may impose on any Award or the exercise thereof, at the date of 
grant or thereafter, such additional terms and conditions, not inconsistent 
with the provisions of the Plan, as the Committee shall determine .

               6.2  OPTIONS.  The Committee is authorized to grant Options to 
Grantees on the following terms and conditions:

                    (a) TYPE OF AWARD.  The Award Agreement evidencing the 
grant of an Option under the Plan shall designate the Option as an ISO or an 
NQSO.

                    (b) EXERCISE PRICE.  The exercise price per share of 
Stock purchasable under an Option shall be determined by the Committee; 
PROVIDED THAT, in the case of an ISO, such exercise price shall be not less 
than the Fair Market Value of a share on the date of grant of such Option, 
and in no event shall the exercise price for the purchase of shares be less 
than par value.  The exercise price for Stock subject to an Option may be 
paid in cash or subject to the approval of the Committee, by an exchange of 
Stock previously owned by the Grantee, or a combination of both, in an amount 
having a combined value equal to such exercise 

                                        9


price.  Subject to the approval of the Committee, a Grantee may pay all or a 
portion of the aggregate exercise price by having shares of Stock with a Fair 
Market Value on the date of exercise equal to the aggregate exercise price 
withheld by the Company or sold by a broker-dealer under circumstances 
meeting the requirements of 12 C.F.R. Section  220 or any successor thereof.

                    (c) TERM AND EXERCISABILITY OF OPTIONS.  The date on 
which the Committee adopts a resolution expressly granting an Option shall be 
considered the day on which such Option is granted.  Options shall be 
exercisable over the exercise period (which shall not exceed ten years from 
the date of grant), at such times and upon such conditions as the Committee 
may determine, as reflected in the Award Agreement; PROVIDED THAT, the 
Committee shall have the authority to accelerate the exercisability of any 
outstanding Option at such time and under such circumstances as it, in its 
sole discretion, deems appropriate.  An Option may be exercised to the extent 
of any or all full shares of Stock as to which the Option has become 
exercisable, by giving written notice of such exercise to the Committee or 
its designated agent.

                    (d) TERMINATION OF EMPLOYMENT, ETC.  An Option may not be 
exercised unless the Grantee is then in the employ of, or then maintains an 
independent contractor relationship with, the Company or a Subsidiary or an 
Affiliate (or a company or a parent or Subsidiary company of such company 
issuing or assuming the Option in a transaction to which Section 424(a) of 
the Code applies); PROVIDED THAT ISOs may be granted only to employees of the 
Company or of a Subsidiary, and may not be exercised unless the Grantee has 
remained continuously so employed, or has continuously maintained such 
relationship, since the date of grant of the Option; PROVIDED THAT, the Award 
Agreement may contain provisions extending the exercisability of Options, in 
the event of specified terminations, to a date not later than the expiration 
date of such Option.

                    (e) OTHER PROVISIONS.  Options may be subject to such 
other conditions including, but not limited to, restrictions on 
transferability of the shares acquired upon exercise of such Options, as the 
Committee may prescribe in its discretion or as may be required by applicable 
law, including but not limited to the requirements respecting ISOs set forth 
in Section 422 of the Code.

               6.3  SARs.  The Committee is authorized to grant SARs to 
Grantees on the following terms and conditions:

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                    (a) IN GENERAL.  Unless the Committee determines 
otherwise, (i) an SAR granted in tandem with an NQSO may be granted at the 
time of grant of the related NQSO or at any time thereafter or (ii) an SAR 
granted in tandem with an ISO may only be granted at the time of grant of the 
related ISO.  An SAR granted in tandem with an Option shall be exercisable 
only to the extent the underlying Option is exercisable.

                    (b) SARs.  An SAR shall confer on the Grantee a right to 
receive an amount with respect to each share subject thereto, upon exercise 
thereof, equal to the excess of (i) the Fair Market Value of one share of 
Stock on the date of exercise over (ii) the grant price of the SAR (which in 
the case of an SAR granted in tandem with an Option shall be equal to the 
exercise price of one share of Stock underlying the Option, and which in the 
case of any other SAR shall be such price as the Committee may determine).

               6.4  RESTRICTED STOCK.  The Committee is authorized to grant 
Restricted Stock to Grantees on the following terms and conditions:

                    (a) ISSUANCE AND RESTRICTIONS.  Restricted Stock shall be 
subject to such restrictions on transferability and other restrictions, if 
any, as the Committee may impose at the date of grant or thereafter, which 
restrictions may lapse separately or in combination at such times, under such 
circumstances, in such installments, or otherwise, as the Committee may 
determine.  Such restrictions may include factors relating to the increase in 
the value of the Stock or to individual or Company performance such as the 
attainment of certain specified individual or Company-wide performance goals 
or earnings per share.  Except to the extent restricted under the Award 
Agreement relating to the Restricted Stock, a Grantee granted Restricted 
Stock shall have all of the rights of a stockholder including, without 
limitation, the right to vote Restricted Stock and the right to receive 
dividends thereon.

                    (b) FORFEITURE.  Upon termination of employment with or 
service to the Company and any Subsidiary, or upon termination of the 
independent contractor relationship, as the case may be, during the 
applicable restriction period, Restricted Stock and any accrued but unpaid 
dividends that are at that time subject to restrictions shall be forfeited; 
PROVIDED THAT, the Committee may provide, by rule or regulation or in any 
Award Agreement, or may determine in any individual case, that restrictions 
or forfeiture conditions relating to Restricted Stock will be waived in whole 
or in part in the event of terminations 

                                        11



resulting from specified causes, and the Committee may in other cases waive 
in whole or in part the forfeiture of Restricted Stock.

                    (c) CERTIFICATES FOR STOCK.  Restricted Stock granted 
under the Plan may be evidenced in such manner as the Committee shall 
determine.  If certificates representing Restricted Stock are registered in 
the name of the Grantee, such certificates shall bear an appropriate legend 
referring to the terms, conditions, and restrictions applicable to such 
Restricted Stock, and the Company shall retain physical possession of the 
certificate.

                    (d) DIVIDENDS.  Dividends paid on Restricted Stock shall 
either be paid at the dividend payment date, or be deferred for payment to 
such date as determined by the Committee, in cash or in shares of 
unrestricted Stock having a Fair Market Value equal to the amount of such 
dividends.  Stock distributed in connection with a stock split or stock 
dividend, and other property distributed as a dividend, shall be subject to 
restrictions and a risk of forfeiture to the same extent as the Restricted 
Stock with respect to which such Stock or other property has been distributed.

               6.5  STOCK AWARDS IN LIEU OF CASH AWARDS.  The Committee is 
authorized to grant Stock to Grantees as a bonus, or to grant other Awards, 
in lieu of Company commitments to pay cash under other plans or compensatory 
arrangements.  Stock or Awards granted hereunder shall have such other terms 
as shall be determined by the Committee.

               6.6  OTHER STOCK-BASED OR CASH-BASED AWARDS.  The Committee is 
authorized to grant to Grantees Other Stock-Based Awards or Other Cash-Based 
Awards alone or in addition to any other Award under the Plan, as deemed by 
the Committee to be consistent with the purposes of the Plan.  Such Awards 
may be granted with value and payment contingent upon performance of the 
Company or any other factors designated by the Committee, or valued by 
reference to the performance of specified Subsidiaries or Affiliates.  

          The Committee shall determine the terms and conditions of such 
Awards at the date of grant or thereafter; PROVIDED, THAT performance 
objectives for each year shall be established by the Committee not later than 
the latest date permissible under Section 162(m) of the Code.  Such 
performance objectives may be expressed in terms of one or more financial or 
other objective goals. Financial goals may be expressed, for example, in 
terms of earnings per share, stock price, 


                                        12


return on equity, net earnings growth, net earnings, related return ratios, 
cash flow, earnings before interest, taxes, depreciation and amortization 
(EBITDA), return on assets or total stockholder return.  Other objective 
goals may include the attainment of various productivity and long-term growth 
objectives.  Any criteria may be measured in absolute terms or as compared to 
another corporation or corporations.  To the extent applicable, any such 
performance objective shall be determined (a) in accordance with the 
Company's audited financial statements and generally accepted accounting 
principles and reported upon by the Company's independent accountants or (b) 
so that a third party having knowledge of the relevant facts could determine 
whether such performance objective is met.  Performance objectives shall 
include a threshold level of performance below which no Award payment shall 
be made, levels of performance above which specified percentages of target 
Awards shall be paid, and a maximum level of performance above which no 
additional Award shall be paid.  Performance objectives established by the 
Committee may be (but need not be) different from year-to-year and different 
performance objectives may be applicable to different Grantees.

          7.   CHANGE OF CONTROL PROVISIONS.  The following provisions shall 
apply in the event of a Change of Control, unless otherwise determined by the 
Committee or the Board in writing at or after grant (including under any 
individual agreement), but prior to the occurrence of such Change of Control:

               7.1  any Award carrying a right to exercise that was not 
previously exercisable and vested shall become fully exercisable and vested; 

               7.2  the restrictions, deferral limitations, payment 
conditions, and forfeiture conditions applicable to any other Award granted 
under the Plan shall lapse and such Awards shall be deemed fully vested, and 
any performance conditions imposed with respect to Awards shall be deemed to 
be fully achieved; and

               7.3  any indebtedness incurred pursuant to Section 8 of this 
Plan shall be forgiven and the collateral pledged in connection with any such 
Loan shall be released.

          8.   LOAN PROVISIONS.  Subject to the provisions of the Plan and all
applicable federal and state laws, rules and regulations (including the
requirements of Regulation G (12 C.F.R. Section  207)), the Committee shall 


                                        13


have the authority to make Loans to Grantees (on such terms and conditions as 
the Committee shall determine), to enable such Grantees to purchase shares in 
connection with the Initial Public Offering or otherwise in connection with 
the realization of Awards under the Plan.  Loans shall be evidenced by a 
promissory note or other agreement, signed by the borrower, which shall 
contain provisions for repayment and such other terms and conditions as the 
Committee shall determine. 

          9.   GENERAL PROVISIONS.

               9.1  EFFECTIVE DATE; APPROVAL BY STOCKHOLDERS.  The Plan shall 
take effect upon its adoption by the Board (the "Effective Date"), but the 
Plan (and any grants of Awards made prior to the stockholder approval 
mentioned herein), shall be subject to the approval of the holder(s) of a 
majority of the issued and outstanding shares of voting securities of the 
Company entitled to vote, which approval must occur within twelve (12) months 
of the date the Plan is adopted by the Board.  In the absence of such 
approval, such Awards shall be null and void.  Notwithstanding the foregoing, 
the effectiveness of the Plan is conditioned upon the consummation of the 
Initial Public Offering, and shall be of no force and effect if the Initial 
Public Offering is not consummated.

               9.2  NONTRANSFERABILITY.  Awards shall not be transferable by 
a Grantee except by will or the laws of descent and distribution or, if then 
permitted under Rule 16b-3, pursuant to a qualified domestic relations order 
as defined under the Code or Title I of the Employee Retirement Income 
Security Act of 1974, as amended, or the rules thereunder, and shall be 
exercisable during the lifetime of a Grantee only by such Grantee or his 
guardian or legal representative.

               9.3  NO RIGHT TO CONTINUED EMPLOYMENT, ETC.  Nothing in the 
Plan or in any Award or Loan granted or any Award Agreement, promissory note 
or other agreement entered into pursuant hereto shall confer upon any Grantee 
the right to continue in the employ of or to continue as an independent 
contractor of the Company, any Subsidiary or any Affiliate, or to be entitled 
to any remuneration or benefits not set forth in the Plan or such Award 
Agreement, promissory note, or other agreement or to interfere with or limit 
in any way the right of the Company or any such Subsidiary or Affiliate to 
terminate such Grantee's employment or independent contractor relationship. 

               9.4  TAXES.  The Company or any Subsidiary or Affiliate is 
authorized to withhold from any Award granted, any payment relating to an 
Award under the Plan, including from a distribution of Stock, or any other 
payment to a


                                         14 


Grantee, amounts of withholding and other taxes due in connection with any 
transaction involving an Award, and to take such other action as the 
Committee may deem advisable to enable the Company and Grantees to satisfy 
obligations for the payment of withholding taxes and other tax obligations 
relating to any Award.  This authority includes the authority to withhold or 
receive Stock or other property and to make cash payments in respect thereof 
in satisfaction of a Grantee's tax obligations.

               9.5  AMENDMENT AND TERMINATION OF THE PLAN.  The Board may at 
any time and from time to time alter, amend, suspend, or terminate the Plan 
in whole or in part; PROVIDED THAT, if the Committee determines that 
stockholder approval of an amendment is necessary and desirable in order for 
the Plan to comply or continue to comply with any applicable law, such 
amendment shall not be effective unless the same shall be approved by the 
requisite vote of the stockholders of the Company entitled to vote thereon. 
Notwithstanding the foregoing, no amendment shall affect adversely any of the 
rights of any Grantee, without such Grantee's consent, under any Award or 
Loan theretofore granted under the Plan.

               9.6  NO RIGHTS TO AWARDS OR LOANS; NO STOCKHOLDER RIGHTS.  No 
Grantee shall have any claim to be granted any Award or Loan under the Plan, 
and there is no obligation for uniformity of treatment of Grantees.   Except 
as provided specifically herein, a Grantee or a transferee of an Award shall 
have no rights as a stockholder with respect to any shares covered by the 
Award until the date of the issuance of a stock certificate to him for such 
shares.

               9.7  UNFUNDED STATUS OF AWARDS.  The Plan is intended to 
constitute an "unfunded" plan for incentive and deferred compensation.  With 
respect to any payments not yet made to a Grantee pursuant to an Award, 
nothing contained in the Plan or any Award shall give any such Grantee any 
rights that are greater than those of a general creditor of the Company.

               9.8  NO FRACTIONAL SHARES.  No fractional shares of Stock 
shall be issued or delivered pursuant to the Plan or any Award.  The 
Committee shall determine whether cash, other Awards, or other property shall 
be issued or paid in lieu of such fractional shares or whether such 
fractional shares or any rights thereto shall be forfeited or otherwise 
eliminated.

               9.9  REGULATIONS AND OTHER APPROVALS.


                                        15


                    (a) The obligation of the Company to sell or deliver 
Stock with respect to any Award granted under the Plan shall be subject to 
all applicable laws, rules and regulations, including all applicable federal 
and state securities laws, and the obtaining of all such approvals by 
governmental agencies as may be deemed necessary or appropriate by the 
Committee.

                    (b) Each Award is subject to the requirement that, if at 
any time the Committee determines, in its absolute discretion, that the 
listing, registration or qualification of Stock issuable pursuant to the Plan 
is required by any securities exchange or under any state or federal law, or 
the consent or approval of any governmental regulatory body is necessary or 
desirable as a condition of, or in connection with, the grant of an Award or 
the issuance of Stock, no such Award shall be granted or payment made or 
Stock issued, in whole or in part, unless listing, registration, 
qualification, consent or approval has been effected or obtained free of any 
conditions not acceptable to the Committee.

                    (c) In the event that the disposition of Stock acquired 
pursuant to the Plan is not covered by a then current registration statement 
under the Securities Act and is not otherwise exempt from such registration, 
such Stock shall be restricted against transfer to the extent required by the 
Securities Act or regulations thereunder, and the Committee may require a 
Grantee receiving Stock pursuant to the Plan, as a condition precedent to 
receipt of such Stock, to represent to the Company in writing that the Stock 
acquired by such Grantee is acquired for investment only and not with a view 
to distribution.

               9.10  GOVERNING LAW.  The Plan and all determinations made and 
actions taken pursuant hereto shall be governed by the laws of the State of 
Maryland without giving effect to the conflict of laws principles thereof. 


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                        ALEXANDRIA REAL ESTATE EQUITIES, INC.
                        1997 STOCK AWARD AND INCENTIVE PLAN




Section                                                                          Page
- -------                                                                          ----
                                                                          
1.   Purpose; Types of Awards; Construction. . . . . . . . . . . . . . . . . . .    1

2.   Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1

3.   Administration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    6

4.   Eligibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    7

5.   Stock Subject to the Plan . . . . . . . . . . . . . . . . . . . . . . . . .    8

6.   Specific Terms of Awards. . . . . . . . . . . . . . . . . . . . . . . . . .    9

7.   Change of Control Provisions. . . . . . . . . . . . . . . . . . . . . . . .   13

8.   Loan Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   13

9.   General Provisions. . . . . . . . . . . . . . . . . . . . . . . . . . . . .   14




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