SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 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


                             SHELTER PROPERTIES III
                       (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
                           Colorado Center, Tower Two
                   2000 South Colorado Boulevard, Suite 2-1000
                             Denver, Colorado 80222
                                 (303) 757-8081
- --------------------------------------------------------------------------------
                 (Name, Address, and Telephone Numbers of Person
  Authorized to Receive Notices and Communications on Behalf of Filing Persons)

                                    Copy To:

                                Gregory M. Chait
                                  Robert Barker
                     Powell, Goldstein, Frazer & Murphy LLP
                   191 Peachtree Street, N.E., Sixteenth Floor
                             Atlanta, Georgia 30303
                                 (404) 572-6600

                            CALCULATION OF FILING FEE



      Transaction Valuation*                      Amount of Filing Fee
                                               
      $1,592,561.00                               $146.52


  *   For purposes of calculating the fee only. This amount assumes the purchase
of 20,159 units of limited partnership interest of Shelter Properties III for
$79.00. Pursuant to Rule 0-11 under the Exchange Act of 1934, the filing fee
equals $92 per $1,000,000 (prorated for amounts less than $1,000,000). The
filing fee is calculated by multiplying the aggregate offering amount by
...000092.

      [ ]   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:

      [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.

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

                             TENDER OFFER STATEMENT

      This Tender Offer Statement on Schedule TO relates to the tender offer by
AIMCO Properties, L.P., a Delaware limited partnership, to purchase outstanding
units of limited partnership interest of Shelter Properties III, a South
Carolina limited partnership, at a price of $79.00 per unit in cash, subject to
the conditions set forth in the Offer to Purchase, dated May 8, 2002, 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 1, 2 and 3,
respectively.

      The information in Exhibits 1-3, 5, 6 and 7 is incorporated in this
Schedule TO by reference in answer to items 1 through 11 of Schedule TO.

      Neither AIMCO Properties, L.P. nor any of the people or entities listed on
Annex I to the Offer to Purchase has, during the last five years, been convicted
in a criminal proceeding (excluding traffic violations or similar misdemeanors),
or was, during the last five years, a party to any judicial or administrative
proceeding (except for matters that were dismissed without sanction or
settlement) that resulted in a judgment, decree or final order enjoining the
person from future violations of, or prohibiting activities subject to, federal
or state securities laws, or a finding of any violation of federal or state
securities laws.

- --------------------------------------------------------------------------------

Item 12.   Exhibits.

1     Offer to Purchase limited partnership units of Shelter Properties III,
      dated April 30, 2002.

2     Letter of Transmittal and related instructions, dated May 8, 2002
      (included as Annex II to the Offer to Purchase attached as Exhibit
      (1)(a)).

3     Acknowledgement and Agreement, dated May 8, 2002.

4     Letter, dated May 8, 2002, from AIMCO Properties, L.P., to the limited
      partners of Shelter Properties III.

5     Credit Agreement (Secured Revolving Credit Facility), dated as of August
      16, 1999, among AIMCO Properties, L.P., Bank of America, Bank Boston,
      N.A., and First Union National Bank. (Exhibit 10.1 to AIMCO's Current
      Report on Form 8-K, dated August 16, 1999, is incorporated herein by this
      reference.)

5(b)  Amended and Restated Credit Agreement, dated as of March 15, 2000, among
      AIMCO Properties, L.P., Bank of America, Bank Boston, N.A., and First
      Union National Bank. (Exhibit 10.20 to AIMCO Properties, L.P.'s Annual
      Report on Form 10-K for the year ended December 31, 1999, is incorporated
      herein by this reference.)

5(c)  First Amendment to $345,000,000 Amended and Restated Credit Agreement,
      dated as of April 14, 2000, among AIMCO Properties, L.P., Bank of America,
      as Administrative Agent, and U.S. Bank National Association, as Lender.
      (Exhibit 10.4 to AIMCO's Quarterly Report on Form 10-Q for quarter ended
      March 31, 2000 is incorporated herein by this reference.)

6     Annual Report of AIMCO Properties, L.P. for the year ended December 31,
      2001 filed on Form 10-K405 on March 20, 2002, incorporated herein by this
      reference.

                                    SIGNATURE

      After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


Date: May 8, 2002
                                              AIMCO PROPERTIES, L.P.

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

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


                                              AIMCO-GP, INC.

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


                                              APARTMENT INVESTMENT
                                              AND MANAGEMENT COMPANY

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

                                  EXHIBIT INDEX



EXHIBIT NO.       DESCRIPTION
- -----------       -----------
               
    1             Offer to Purchase limited partnership units of Shelter
                  Properties III, dated May 8, 2002.

    2             Letter of Transmittal and related instructions, dated May 8,
                  2002 (included as Annex II to the Offer to Purchase attached
                  as Exhibit (1)(a)).

    3             Acknowledgement and Agreement, dated May 8, 2002.

    4             Letter, dated May 8, 2002, from AIMCO Properties, L.P., to the
                  limited partners of Shelter Properties III.

    5             Credit Agreement (Secured Revolving Credit Facility), dated as
                  of August 16, 1999, among AIMCO Properties, L.P., Bank of
                  America, Bank Boston, N.A., and First Union National Bank.
                  (Exhibit 10.1 to AIMCO's Current Report on Form 8-K, dated
                  August 16, 1999, is incorporated herein by this reference.)

    5(b)          Amended and Restated Credit Agreement, dated as of March 15,
                  2000, among AIMCO Properties, L.P., Bank of America, Bank
                  Boston, N.A., and First Union National Bank. (Exhibit 10.20 to
                  AIMCO Properties, L.P.'s Annual Report on Form 10-K for the
                  year ended December 31, 1999 is incorporated herein by this
                  reference.)

    5(c)          First Amendment to $345,000,000 Amended and Restated Credit
                  Agreement, dated as of April 14, 2000, among AIMCO Properties,
                  L.P., Bank of America, as Administrative Agent, and U.S. Bank
                  National Association, as Lender. (Exhibit 10.4 to AIMCO's
                  Quarterly Report on Form 10-Q for quarter ended March 31, 2000
                  is incorporated herein by this reference.)

    6             Annual Report of AIMCO Properties, L.P. for the year ended
                  December 31, 2001 filed on Form 10-K405 on March 20, 2002,
                  incorporated herein by this reference.