SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                   SCHEDULE TO

                                 (Rule 14d-100)
            TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                                (Amendment No. )

                       UNITED INVESTORS INCOME PROPERTIES
- --------------------------------------------------------------------------------
                       (Name of Subject Company (Issuer))


                        AIMCO PROPERTIES, L.P. - OFFEROR
- --------------------------------------------------------------------------------
(Names of Filing Persons (Identifying Status as Offeror, Issuer or Other Person)


                            LIMITED PARTNERSHIP UNITS
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                      NONE
- --------------------------------------------------------------------------------
                      (CUSIP Number of Class of Securities)


                                 Patrick J. Foye
                            Executive Vice President
                   Apartment Investment and Management Company
                  4582 South Ulster Street Parkway, Suite 1100
                             Denver, Colorado 80237
                                 (303) 757-8081
- --------------------------------------------------------------------------------
                  (Name Address and Telephone Number of Person
  Authorized to Receive Notices and Communications on Behalf of Filing Persons)

                                   Copies to:
                                Gregory M. Chait
                                  Robert Barker
                     Powell, Goldstein, Frazer & Murphy LLP
                     191 Peachtree Street, N.E., Suite 1600
                             Atlanta, Georgia 30303
                                 (404) 572-6600

                            CALCULATION OF FILING FEE

<Table>
<Caption>
        Transaction Valuation*                                Amount of Filing Fee
        ----------------------                                --------------------
                                                           
        $4,027,104                                            $325.79
</Table>

     *   For purposes of calculating the fee only. This amount assumes the
         purchase of 37,288 units of limited partnership interest of United
         Investors Income Properties for $108.00 per unit. The amount of the
         filing fee, calculated in accordance with Section 14(g)(1)(B)(3) and
         Rule 0-11(d) under the Securities Exchange Act of 1934, as amended,
         equals $80.90 per $1,000,000 of the maximum aggregate offering price.

     [ ] Check the box if any part of the fee is offset as provided by Rule
         0-11(a)(2) and identify the filing with which the offsetting fee was
         previously paid. Identify the previous filing by registration statement
         number, or the Form or Schedule and the date of its filing.

         Amount Previously Paid:                   Filing Party:
                                   -------------                  --------------

         Form or Registration No.:                 Date Filed:
                                   -------------                  --------------





     [ ] Check the box if the filing relates solely to preliminary
         communications made before the commencement of a tender offer.

         Check the appropriate boxes below to designate any transactions to
which the statement relates:

<Table>
                                                                   
         [X] third-party tender offer subject to Rule 14d-1.          [ ] going-private transaction subject to Rule 13e-3.

         [ ] issuer tender offer subject to Rule 13e-4.               [ ] amendment to Schedule 13D under Rule 13d-2.
</Table>

         Check the following box if the filing is a final amendment reporting
the results of the tender offer: [ ]



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                             TENDER OFFER STATEMENT

         This Tender Offer Statement on Schedule TO relates to the tender offer
by AIMCO Properties, L.P., a Delaware limited partnership ("AIMCO Properties"),
to purchase units of limited partnership interest of United Investors Income
Properties, a Missouri limited partnership, at a price of $108.00 per Unit in
cash, subject to the conditions set forth in the Offer to Purchase, dated May 9,
2003 (the "Offer to Purchase"), and in the related Letter of Transmittal and
Acknowledgment and Agreement, which, as amended and supplemented from time to
time, together constitute the tender offer. Copies of the Offer to Purchase,
Letter of Transmittal and Acknowledgment and Agreement are filed with this
Schedule TO as Exhibits (a)(1), (a)(2) and (a)(3), respectively. The item
numbers and responses thereto below are provided in accordance with the
requirements of Schedule TO.

ITEM 1.  SUMMARY TERM SHEET.

         The information set forth under "SUMMARY TERM SHEET" in the Offer to
Purchase is incorporated herein by reference.

ITEM 2.  SUBJECT COMPANY INFORMATION.

         (a) - (c) The information set forth under "THE OFFER--Section 13.
Certain Information Concerning Your Partnership" in the Offer to Purchase is
incorporated herein by reference.

ITEM 3.  IDENTITY AND BACKGROUND OF FILING PERSON.

         (a) - (c) This Schedule TO is being filed by AIMCO Properties.
AIMCO-GP, Inc., a Delaware corporation ("AIMCO-GP"), is the general partner of
AIMCO Properties and a wholly owned subsidiary of Apartment Investment and
Management Company, a Maryland corporation ("AIMCO"). The principal business of
AIMCO, AIMCO-GP and AIMCO Properties is the ownership, acquisition, development,
expansion and management of multi-family apartment properties. The business
address of AIMCO Properties is 4582 South Ulster Street Parkway, Suite 1100,
Denver, Colorado 80237, and its telephone number is (303) 757-8101.

         The information set forth under "THE OFFER--Section 8. Information
Concerning Us and Certain of Our Affiliates" in the Offer to Purchase is
incorporated herein by reference.

         During the past five years, none of AIMCO, AIMCO-GP or AIMCO
Properties, nor, to the best of their knowledge, any of the persons listed in
Annex I to the Offer to Purchase (i) has been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors), or (ii) was a party to a
civil proceeding of a judicial or administrative body of competent jurisdiction
and as a result of such proceeding was or is subject to a judgment, decree or
final order enjoining future violations of, or prohibiting activities subject
to, federal or state securities laws, or finding any violation with respect to
such laws.





ITEM 4.  TERMS OF THE TRANSACTION.

         (a) The information set forth under "SUMMARY TERM SHEET" and "THE
OFFER" in the Offer to Purchase and the information set forth in the related
Letter of Transmittal is incorporated herein by reference.

ITEM 5.  PAST CONTACTS, TRANSACTIONS, NEGOTIATIONS AND AGREEMENTS.

         (a) and (b) The information set forth under "SUMMARY TERM
SHEET--Conflicts of Interest," "THE OFFER--Section 9. Background and Reasons for
the Offer" and "THE OFFER--Section 11. Conflicts of Interest and Transactions
with Affiliates" in the Offer to Purchase is incorporated herein by reference.

ITEM 6.  PURPOSES OF THE TRANSACTION AND PLANS OR PROPOSALS.

         (a), (c)(1) - (7) The information set forth under "SUMMARY TERM
SHEET--The Offer, "THE OFFER--Section 9. Background and Reasons for the Offer"
and "THE OFFER--Section 12. Future Plans of the Purchaser" in the Offer to
Purchase is incorporated herein by reference.

ITEM 7.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         (a), (b) and (d) The information set forth under "SUMMARY TERM
SHEET--Availability of Funds," "THE OFFER--Section 15. Source of Funds" and "THE
OFFER--Section 19. Fees and Expenses" in the Offer to Purchase is incorporated
herein by reference.

ITEM 8.  INTEREST IN SECURITIES OF THE SUBJECT COMPANY.

         (a) The information set forth under "THE OFFER--Certain Information
Concerning Your Partnership" in the Offer to Purchase is incorporated herein by
reference.

         (b) On March 31, 2003, AIMCO Properties purchased 80 units in United
Investors Income Properties at a price of $109.67 per unit.

ITEM 9.  PERSONS/ASSETS, RETAINED, EMPLOYED, COMPENSATED OR USED.

         The information set forth under "THE OFFER--Section 19. Fees and
Expenses" in the Offer to Purchase is incorporated herein by reference.

ITEM 10. FINANCIAL STATEMENTS.

         (a) The financial statements included in AIMCO Properties' Annual
Report on Form 10-K for the year ended December 31, 2002, which are listed on
the Index to Financial Statements on page F-1 of such report, are incorporated
herein by reference. Such reports may


                                      -2-



be inspected at the Securities and Exchange Commission's (the "Commission")
public reference room in Washington, D.C., located at 450 5th Street, N.W., Room
1024, Washington, D.C. 20549, telephone 1-800-SEC-0330. A copy of the report can
be also obtained from the Commission's web site at www.sec.gov.

     (b) Not applicable.

ITEM 11. ADDITIONAL INFORMATION.

         The information set forth in the Offer to Purchase and in the related
Letter of Transmittal is incorporated herein by reference.

ITEM 12. EXHIBITS.

(a)(1)   Offer to Purchase limited partnership units of United Investors Income
         Properties, dated May 9, 2003.

(a)(2)   Letter of Transmittal and related instructions, dated May 9, 2003
         (included as Annex II to the Offer to Purchase attached as Exhibit
         (a)(1) hereto).

(a)(3)   Acknowledgement and Agreement, dated May 9, 2003.

(a)(4)   Letter, dated May 9, 2003, from AIMCO Properties to the limited
         partners of United Investors Income Properties.

(a)(5)   Annual Report of AIMCO Properties for the year ended December 31, 2002
         filed with the Commission on Form 10-K on March 25, 2003 is
         incorporated herein by reference.

(b)(1)   Fifth Amended and Restated Credit Agreement, dated as of February 14,
         2003, by and among AIMCO, AIMCO Properties, AIMCO/Bethesda Holdings,
         Inc., NHP Management Company, Bank of America, N.A., and each lender
         from time to time party thereto (Exhibit 10.35.2 to AIMCO's Annual
         Report on Form 10-K for the fiscal year ended December 31, 2002 is
         incorporated herein by reference).

(b)(2)   Third Amendment, dated as of February 14, 2003, to the Interim Credit
         Agreement, dated as of March 11, 2002, by and among AIMCO Properties,
         NHP Management Company, AIMCO, Lehman Commercial Paper, Inc., Lehman
         Brothers, Inc., and each lender from time to time party thereto
         (Exhibit 10.38.2 to AIMCO's Annual Report on Form 10-K for the fiscal
         year ended December 31, 2002 is incorporated herein by reference).

(b)(3)   Second Amendment, dated as of August 2, 2002, to the Interim Credit
         Agreement, dated as of March 11, 2002, by and among AIMCO Properties,
         NHP Management Company, AIMCO, Lehman Commercial Paper Inc., Lehman
         Brothers Inc., and each lender from time to time party thereto (Exhibit
         10.3 to AIMCO's Quarterly


                                      -3-



         Report on Form 10-Q for the quarterly period ended June 30, 2002 is
         incorporated herein by reference).

(b)(4)   Interim Credit Agreement, dated as of March 11, 2002, by and among
         AIMCO, AIMCO Properties, NHP Management Company, Lehman Commercial
         Paper, Inc., and the other financial institutions party thereto
         (Exhibit 10.32 to AIMCO's Annual Report on Form 10-K for the year ended
         December 31, 2001, is incorporated herein by reference).

(d)      Not applicable.

(g)      None.

(h)      None.

ITEM 13. INFORMATION REQUIRED BY SCHEDULE 13E-3.

     Not applicable.


                                      -4-



                                    SIGNATURE

         After due inquiry and to the best of its knowledge and belief, the
undersigned hereby certifies that the information set forth in this statement is
true, complete and correct.

Dated: May 9, 2003
                                          AIMCO PROPERTIES, L.P.

                                          By:   AIMCO-GP, INC.
                                                --------------------------------
                                                (General Partner)

                                          By:   /s/ Patrick J. Foye
                                                --------------------------------
                                                Executive Vice President


                                      -5-



                                  EXHIBIT INDEX

<Table>
<Caption>
EXHIBIT
NUMBER   DESCRIPTION
- -------  -----------
      
(a)(1)   Offer to Purchase limited partnership units of United Investors Income
         Properties, dated May 9, 2003.

(a)(2)   Letter of Transmittal and related instructions, dated May 9, 2003
         (included as Annex II to the Offer to Purchase attached as Exhibit
         (a)(1) hereto).

(a)(3)   Acknowledgement and Agreement, dated May 9, 2003.

(a)(4)   Letter, dated May 9, 2003, from AIMCO Properties to the limited
         partners of United Investors Income Properties.

(a)(5)   Annual Report of AIMCO Properties for the year ended December 31, 2002
         filed on Form 10-K on March 25, 2003 is incorporated herein by
         reference.

(b)(1)   Fifth Amended and Restated Credit Agreement, dated as of February 14,
         2003, by and among AIMCO, AIMCO Properties, AIMCO/Bethesda Holdings,
         Inc., NHP Management Company, Bank of America, N.A., and each lender
         from time to time party thereto (Exhibit 10.35.2 to AIMCO's Annual
         Report on Form 10-K for the fiscal year ended December 31, 2002 is
         incorporated herein by reference).

(b)(2)   Third Amendment, dated as of February 14, 2003, to the Interim Credit
         Agreement, dated as of March 11, 2002, by and among AIMCO Properties,
         NHP Management Company, AIMCO, Lehman Commercial Paper, Inc., Lehman
         Brothers, Inc., and each lender from time to time party thereto
         (Exhibit 10.38.2 to AIMCO's Annual Report on Form 10-K for the fiscal
         year ended December 31, 2002 is incorporated herein by reference).

(b)(3)   Second Amendment, dated as of August 2, 2002, to the Interim Credit
         Agreement, dated as of March 11, 2002, by and among AIMCO Properties,
         NHP Management Company, AIMCO, Lehman Commercial Paper Inc., Lehman
         Brothers Inc., and each lender from time to time party thereto (Exhibit
         10.3 to AIMCO's Quarterly Report on Form 10-Q for the quarterly period
         ended June 30, 2002 is incorporated herein by reference).

(b)(4)   Interim Credit Agreement, dated as of March 11, 2002, by and among
         AIMCO, AIMCO Properties, NHP Management Company, Lehman Commercial
         Paper, Inc., and the other financial institutions party thereto
         (Exhibit 10.32 to AIMCO's Annual Report on Form 10-K for the year ended
         December 31, 2001, is incorporated herein by reference).

(d)      Not applicable.

(g)      None.

(h)      None.
</Table>


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