UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934* Affordable Residential Communities Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 008273104 -------------------------------------------------------------------------------- (CUSIP Number) September 21, 2006 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). ----------------------- ---------------------- CUSIP No. 008273104 13G Page 2 of 11 pages ----------------------- ---------------------- ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Rockbay Capital Management, LP ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ---------- --------------------------------------------------------------------- 3 SEC USE ONLY ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------- ------ ---------------------------------------------------- 5 SOLE VOTING POWER 0 ------ ---------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,145,000 OWNED BY EACH ------ ---------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 0 ------ ---------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,145,000 ---------- --------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,145,000 ---------- --------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.2% ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA, HC ---------- --------------------------------------------------------------------- ----------------------- ---------------------- CUSIP No. 008273104 13G Page 3 of 11 pages ----------------------- ---------------------- ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON RCM Advisors, LLC ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ---------- --------------------------------------------------------------------- 3 SEC USE ONLY ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------- ------ ---------------------------------------------------- 5 SOLE VOTING POWER 0 ------ ---------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,145,000 OWNED BY EACH ------ ---------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 0 ------ ---------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,145,000 ---------- --------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,145,000 ---------- --------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.2% ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN, HC ---------- --------------------------------------------------------------------- ----------------------- ---------------------- CUSIP No. 008273104 13G Page 4 of 11 pages ----------------------- ---------------------- ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Atul Khanna ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ---------- --------------------------------------------------------------------- 3 SEC USE ONLY ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------- ------ ---------------------------------------------------- 5 SOLE VOTING POWER 0 ------ ---------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,145,000 OWNED BY EACH ------ ---------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 0 ------ ---------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,145,000 ---------- --------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,145,000 ---------- --------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.2% ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN, HC ---------- --------------------------------------------------------------------- ----------------------- ---------------------- CUSIP No. 008273104 13G Page 5 of 11 pages ----------------------- ---------------------- ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Jonathan Baron ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] ---------- --------------------------------------------------------------------- 3 SEC USE ONLY ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States -------------------- ------ ---------------------------------------------------- 5 SOLE VOTING POWER 0 ------ ---------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY 2,145,000 OWNED BY EACH ------ ---------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 0 ------ ---------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,145,000 ---------- --------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,145,000 ---------- --------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.2% ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN, HC ---------- --------------------------------------------------------------------- Item 1 (a) Name of Issuer Affordable Residential Communities Inc. (the "Company") (b) Address of Issuer's Principal Executive Offices 600 Grant Street Suite 900 Denver, CO 80203 Item 2 (a) Name of Person Filing This statement is filed by the entities and persons listed below, who are collectively referred to herein as "Reporting Persons," with respect to shares of Common Stock (as defined in Item 2(d) below) of the Company (the "Shares"): Investment Manager ------------------ (i) Rockbay Capital Management, LP, a Delaware limited partnership (the "Investment Manager"), with respect to the Shares held by certain investment vehicles directly or indirectly advised by the Investment Manager (each a "Rockbay Fund"). General Partner --------------- (ii) RCM Advisors, LLC, a Delaware limited liability company (the "General Partner"), which serves as the general partner of the Investment Manager, with respect to the Shares held by each of the Rockbay Funds. Reporting Individuals --------------------- (iii) Mr. Atul Khanna ("Mr. Khanna"), a United States citizen, with respect to the Shares held by each of the Rockbay Funds. (iv) Mr. Jonathan Baron ("Mr. Baron"), a United States citizen, with respect to the Shares held by each of the Rockbay Funds. Mr. Khanna and Mr. Baron are collectively referred to as the "Reporting Individuals." The Investment Manager directly or indirectly serves as the investment manager to each of the Rockbay Funds. The General Partner serves as the general partner to the Investment Manager. Mr. Khanna is the Chief Executive Officer, and Mr. Baron is the Senior Managing Director, of the General Partner. (b) Address of Principal Business Office or, if None, Residence The address of the principal business office of each of the Reporting Persons is: 600 Fifth Avenue, 24th Floor New York, NY 10020 6 (c) Citizenship Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. (d) Title of Class of Securities Common Stock, $0.01 par value per share ("Common Stock") (e) CUSIP Number 008273104 Item 3. If this statement is filed pursuant to Sections 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (a) [ ] Broker or dealer registered under Section 15 of the Act. (b) [ ] Bank as defined in Section 3(a)(6) of the Act. (c) [ ] Insurance Company as defined in Section 3(a)(19) of the Act. (d) [ ] Investment Company registered under Section 8 of the Investment Company Act of 1940. (e) [ ] Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E). (f) [ ] Employee Benefit Plan or Endowment Fund in accordance with 13d-1 (b)(1)(ii)(F). (g) [ ] Parent Holding Company or control person in accordance with Rule 13d-1 (b)(1)(ii)(G). (h) [ ] Savings Association as defined in Section 3(b) of the Federal Deposit Insurance Act. (i) [ ] Church Plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940. (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). Item 4. Ownership The information required by Items 4(a) - (c) is set forth in Rows 5 - 11 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The Investment Manager, which serves directly or indirectly as the investment manager to each of the Rockbay Funds, may be deemed to be the beneficial owner of all such Shares owned by the Rockbay Funds. The General Partner, as general partner to the Investment Manager, may be deemed to be the beneficial owner of all Shares owned by the Rockbay Funds. Each of the Reporting Individuals, as an officer of the General Partner with the power to exercise investment discretion, may be deemed to be the beneficial owner of all Shares owned by the Rockbay Funds. Each of the Investment Manager, the General Partner, and the Reporting Individuals hereby disclaims any beneficial ownership of any such Shares. Item 5. Ownership of Five Percent or Less of a Class If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [ ] Item 6. Ownership of More than Five Percent on Behalf of Another Person Not applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company Not applicable 7 Item 8. Identification and Classification of Members of the Group Not applicable Item 9. Notice of Dissolution of Group Not applicable Item 10. Certification Each of the Reporting Persons hereby makes the following certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 8 SIGNATURES After reasonable 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. Dated: September 28, 2006 ROCKBAY CAPITAL MANAGEMENT, LP By: RCM Advisors, LLC By: /s/ Atul Khanna ----------------------------------------- Atul Khanna Chief Executive Officer RCM ADVISORS, LLC By: /s/ Atul Khanna ----------------------------------------- Atul Khanna Chief Executive Officer /s/ Atul Khanna ---------------------------------------------- Atul Khanna /s/ Jonathan Baron ---------------------------------------------- Jonathan Baron 9 EXHIBIT INDEX Exhibit 99.1 Joint Filing Agreement, dated September 28, 2006, by and among Rockbay Capital Management, LP, RCM Advisors, LLC, Atul Khanna, and Jonathan Baron 10