SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE TO (AMENDMENT NO. 3) TENDER OFFER STATEMENT UNDER SECTION 14(D)(1) OR 13(E)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (FINAL AMENDMENT) AND SCHEDULE 13D/A UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 18) Davidson Diversified Real Estate II, L.P. - -------------------------------------------------------------------------------- (Name of Subject Company (Issuer) AIMCO Properties, L.P. -- Offeror Apartment Investment and Management Company AIMCO-GP, Inc. Davidson Diversified Properties, Inc. - -------------------------------------------------------------------------------- (Names of Filing Persons -- Offerors) Limited Partnership Units - -------------------------------------------------------------------------------- (Title of Class Securities) None - -------------------------------------------------------------------------------- (CUSIP Number of Class Securities) Martha L. Long Apartment Investment and Management Company 4582 Ulster Street Parkway, Suite 1100 Denver, Colorado 80237 (303) 757-8101 - -------------------------------------------------------------------------------- (Name, address, and telephone numbers of person authorized to receive notices and communications on behalf of filing persons) Copy to: Joseph A. Coco Skadden, Arps, Slate, Meagher & Flom LLP Four Times Square New York, New York 10036 (212) 735-3000 and Jonathan L. Friedman Skadden, Arps, Slate, Meagher & Flom LLP 300 South Grand Avenue Los Angeles, California 90071 (213) 687-5000 Calculation of Filing Fee <Table> <Caption> Transaction valuation* Amount of filing fee - ---------------------- -------------------- $2,480,132.72 $314.23 </Table> 1 * For purposes of calculating the fee only. This amount assumes the purchase of 604 units of limited partnership interest of the subject partnership for $4,106.18 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 $126.70 per million of the aggregate amount of cash offered by the bidder. [X] 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: $314.23 Filing Party: AIMCO Properties, L.P. Form or Registration No.: Schedule TO Date Filed: June 14, 2004 [ ] 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 [ ] issuer tender offer subject to Rule 13e-4 [X] going-private transaction subject to Rule 13e-3 [X] 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: [X] 2 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. AIMCO PROPERTIES, L.P. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) 84-1275721 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) WC - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 647.25 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 647.25 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 647.25 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 52.87% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN - -------------------------------------------------------------------------------- 3 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. AIMCO-GP, INC. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 647.25 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 647.25 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 647.25 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 52.87% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO - -------------------------------------------------------------------------------- 4 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. APARTMENT INVESTMENT AND MANAGEMENT COMPANY I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) 84-1259577 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Maryland - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 647.25 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 647.25 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 647.25 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 52.87% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO - -------------------------------------------------------------------------------- 5 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. INSIGNIA PROPERTIES, L.P. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 158.50 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 158.50 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 158.50 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 12.95% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) PN - -------------------------------------------------------------------------------- 6 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. COOPER RIVER PROPERTIES, L.L.C. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 122.75 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 122.75 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 122.75 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 10.03% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) OO - -------------------------------------------------------------------------------- 7 CUSIP NO. NONE - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS. AIMCO/IPT, INC. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS (SEE INSTRUCTIONS) Not Applicable - -------------------------------------------------------------------------------- 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF -- SHARES BENEFICIALLY ----------------------------------------------------------------- OWNED BY 8 SHARED VOTING POWER EACH 158.50 Units REPORTING PERSON ----------------------------------------------------------------- WITH 9 SOLE DISPOSITIVE POWER -- ----------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 158.50 Units - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 158.50 Units - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) [ ] - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Approximately 12.95% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO - -------------------------------------------------------------------------------- 8 AMENDMENT NO. 3 TO SCHEDULE TO/AMENDMENT NO. 18 TO SCHEDULE 13D This Statement constitutes (a) Amendment No. 3 to the Tender Offer Statement and Rule 13e-3 Transaction Statement on Schedule TO, as amended by Amendment No. 1 and Amendment No. 2 thereto (the "Schedule TO"), filed by AIMCO Properties, L.P., AIMCO-GP, Inc., Apartment Investment and Management Company and Davidson Diversified Properties, Inc. relating to the offer by AIMCO Properties, L.P. to purchase units of limited partnership interest ("Units") of Davidson Diversified Real Estate II, L.P., a Delaware limited partnership (the "Partnership"), at a price of $4,106.18 per unit in cash, subject to the conditions set forth in the Litigation Settlement Offer dated June 14, 2004, and in the related Letter of Transmittal (which, together with any supplements or amendments, collectively constitute the "Offer"); and (b) Amendment No. 18 to the Schedule 13D filed by AIMCO Properties, L.P., AIMCO-GP, Inc., Apartment Investment and Management Company, AIMCO IPLP, L.P., Cooper River Properties, L.L.C. and Insignia Properties, L.P. (the "Schedule 13D"). Copies of the Litigation Settlement Offer and the Letter of Transmittal are filed as Exhibits (a)(1) and (a)(2), respectively, to the Schedule TO. The item numbers and responses thereto below are in accordance with the requirements of Schedule TO. Unless defined herein, capitalized terms used and not otherwise defined herein have the respective meanings ascribed to such terms in the Litigation Settlement Offer. At midnight, New York City time, on August 13, 2004, the Offer expired pursuant to its terms. A total of 27 units, representing approximately 1.2% of the outstanding units, were validly tendered and not withdrawn pursuant to the Offer. AIMCO Properties, L.P. has accepted for payment all of those units. 9 SIGNATURE After due inquiry and to the best of its knowledge and belief, the undersigned hereby certify that the information set forth in this statement is true, complete and correct. Date: August 18, 2004 AIMCO PROPERTIES, L.P. By: AIMCO-GP, INC. Its General Partner By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President APARTMENT INVESTMENT AND MANAGEMENT COMPANY By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President AIMCO-GP, INC. By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President DAVIDSON DIVERSIFIED PROPERTIES, INC. By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President COOPER RIVER PROPERTIES, L.L.C. By: AIMCO PROPERTIES, L.P. Its Managing Member By: AIMCO-GP, INC. Its General Partner By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President INSIGNIA PROPERTIES, L.P. By: AIMCO/IPT, INC. Its General Partner By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President AIMCO/IPT, INC. By: /s/ Martha L. Long ------------------------------- Martha L. Long Senior Vice President 10