Exhibit 4.1(c)

SECOND SUPPLEMENTAL INDENTURE

This Second Supplemental Indenture, dated as of September 17, 2007 (this "Second Supplemental Indenture"),
among Stonehill Square LLC (the "New Guarantor"), Kimball Hill, Inc. (together with its successors and assigns, the
"Company"), each other existing Guarantor under the Indenture referred to below (the "Existing
Guarantors"), and U.S. Bank National Association (the "Trustee"), as Trustee under the Indenture referred to below. Capitalized
terms used and not defined herein shall have the same meanings given in the Indenture unless otherwise indicated.

W I T N E S S E T H:

WHEREAS, the Company and the Trustee have heretofore executed and delivered an Indenture, dated as of December 19, 2005 (as amended, supplemented, waived
or otherwise modified, the "Indenture"), providing for the issuance of 101/2% Senior Subordinated Notes due 2012 of the Company (the
"Notes");

WHEREAS,
pursuant to Section 4.13 of the Indenture, if the Company acquires or creates any additional Subsidiary which is a Restricted Subsidiary, each such Subsidiary shall
execute and deliver a supplemental indenture pursuant to which such Subsidiary shall unconditionally guarantee the Company's obligations under the Notes and the Indenture;

WHEREAS,
the New Guarantor is a Restricted Subsidiary of the Company;

WHEREAS,
the Company and the Trustee desire to have the New Guarantor enter into this Second Supplemental Indenture and agree to guarantee the obligations of the Company under the
Indenture and the Notes and the New Guarantor desires to enter into this Second Supplemental Indenture and to guarantee the obligations of the Company under the Indenture and the Notes as of such
date;

WHEREAS,
Section 8.01 of the Indenture provides that the Company, the Existing Guarantors and the Trustee may, without the written consent of the Holders of the outstanding Notes,
amend the Indenture as provided herein;

WHEREAS,
by entering into this Second Supplemental Indenture, the Company and the Trustee have consented to amend the Indenture in accordance with the terms and conditions herein;

WHEREAS,
each Existing Guarantor hereby acknowledges and consents to amend the Indenture in accordance with the terms and conditions herein; and

WHEREAS,
all acts and things prescribed by the Certificate of Formation and Limited Liability Company Operating Agreement of the New Guarantor (as now in effect) necessary to make this
Second Supplemental Indenture a valid instrument legally binding on the New Guarantor for the purposes herein expressed, in accordance with its terms, have been duly done and performed.

NOW,
THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Guarantor, the Company and the
Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

Section 1.Agreement to be Bound.    The New Guarantor hereby becomes a party to the Indenture as a
Guarantor and as such will have all of the rights and be subject to all of the obligations and agreements of a Guarantor under the Indenture. The New Guarantor agrees to be bound by all of the
provisions of the Indenture applicable to a Guarantor and to perform all of the obligations and agreements of a Guarantor under the Indenture.

Section 2.Compliance with and Fulfillment of Condition of Section 4.13.    The execution and
delivery of this Second Supplemental Indenture and the Notation of Guarantee by the New Guarantor (along with such documentation relating thereto as the Trustee shall require) fulfills the obligations
of the Company under Section 4.13 of the Indenture.

Section 3.Ratification of Indenture; Supplemental Indenture Part of Indenture; Trustee's
Disclaimer.    Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall
remain in full force and effect. This Second Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and
delivered

1

---



shall
be bound hereby. The Trustee makes no representation or warranty as to the validity or sufficiency of this Second Supplemental Indenture.

Section 4.Governing Law.    THIS SECOND SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, AS APPLIED TO CONTRACTS MADE AND PERFORMED WITHIN THE STATE OF NEW YORK.

Section 5.No Adverse Interpretation of Other Agreements.    This Second Supplemental Indenture may not be
used to interpret any other indenture, loan or debt agreement of the Company or its Subsidiaries (other than the Indenture). No such indenture, loan or debt agreement may be used to interpret this
Second Supplemental Indenture or the Indenture.

Section 6.Successors.    This Second Supplemental Indenture shall be binding upon and inure to the benefit
of the parties hereto and their respective successors and assigns.

Section 7.Separability.    Each provision of this Second Supplemental Indenture shall be considered
separable and if for any reason any provision which is not essential to the effectuation of the basic purpose of this Second Supplemental Indenture or the Notes shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

Section 8.Counterpart Originals.    The parties may sign multiple counterparts of this Second Supplemental
Indenture. Each signed counterpart shall be deemed an original, but all of them together represent one and the same agreement.

Section 9.Headings, etc.    The headings of the Sections of this Second Supplemental Indenture have been
inserted for convenience of reference only, are not to be considered a part of this Second Supplemental Indenture and shall in no way modify or restrict any of the terms or provisions hereof.

*    *    *    *    *

2

---



IN
WITNESS WHEREOF, the parties hereto have caused this Second Supplemental Indenture to be duly executed as of the date Second above written.

| |  | STONEHILL SQUARE LLC, as a Guarantor
| |  | ------------------------------------
| |  | By:                                 
| |  | By:                                 
| |  | KIMBALL HILL, INC.                  
| |  | By:                                 

Signature Page to Second Supplemental Indenture

---



| |  | CACTUS HILLS, LLC
KIMBALL HILL HOMES TEXAS INVESTMENTS, L.L.C.
KIMBALL HILL HOMES TEXAS OPERATIONS, L.L.C.
KIMBALL HILL TEXAS INVESTMENT COMPANY, L.L.C.
KIMBALL HILL FAR EAST DETROIT, LLC
KH FINANCIAL HOLDING COMPANY
KHH TEXAS TRADING COMPANY L.P.
KIMBALL HILL HOMES AUSTIN, L.P.
KIMBALL HILL HOMES CALIFORNIA, INC.
KIMBALL HILL HOMES DALLAS, L.P.
KIMBALL HILL HOMES FLORIDA, INC.
KIMBALL HILL HOMES HOUSTON, L.P.
KIMBALL HILL HOMES ILLINOIS, LLC
KIMBALL HILL HOMES NEVADA, INC.
KIMBALL HILL HOMES OHIO, INC.
KIMBALL HILL HOMES OREGON, INC.
KIMBALL HILL HOMES REALTY FLORIDA, INC.
KIMBALL HILL HOMES SAN ANTONIO, L.P.
KIMBALL HILL HOMES TEXAS, INC.
KIMBALL HILL HOMES WASHINGTON, INC.
KIMBALL HILL HOMES WISCONSIN, INC.
NATIONAL CREDIT AND GUARANTY CORPORATION
RIVER OAKS REALTY, L.P.
18TH AND PEORIA, LLC
KIMBALL HILL SUBURBAN CENTERS, L.L.C.
KIMBALL HILL URBAN CENTERS, L.L.C.
KIMBALL HILL URBAN CENTERS CHICAGO ONE, L.L.C.
KIMBALL HILL URBAN CENTERS CHICAGO TWO, L.L.C.
| |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | By:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
| |  | EAST LAKE PARK, INC.
KIMBALL HILL STATEWAY, INC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| |  | By:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

---



| |  | KIMBALL HILL BELLEVUE RANCH, LLC
KIMBALL HILL REFLECTIONS, LLC
KIMBALL HILL SHELDON LAKES, LLC
KIMBALL HILL VILLAGES, LLC
| |  | -------------------------------------------------------------------------------------------------------------------------
| |  | By:                                                                                                                      
| |  | By:                                                                                                                      
| |  | KIMBALL HILL TX PROPERTIES, LLC                                                                                          
| |  | By:                                                                                                                      
| |  | By:                                                                                                                      
| |  | THE HAMILTON PLACE PARTNERSHIP                                                                                           
| |  | By:                                                                                                                      
| |  | By:                                                                                                                      
| |  | KH INGHAM PARK SOUTH, LLC
KH SRAV II, LLC                                                                                
| |  | By:                                                                                                                      
| |  | By:                                                                                                                      

---



| |  | RIVER OAKS HOMES, LLP                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
| |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |  | By:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| |  | By:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| |  | BRIDLE RIDGE LIMITED PARTNERSHIP
PARKVIEW LIMITED PARTNERSHIP
RIVER POINTE LIMITED PARTNERSHIP
SONATA AT MORADA RANCH LIMITED PARTNERSHIP
WINDMILL PARK LIMITED PARTNERSHIP
KIMBALL HILL CHADWICK FARMS LIMITED PARTNERSHIP
KIMBALL WEST FRISCO LIMITED PARTNERSHIP
KIMBALL HILL CALUSA PALMS LIMITED PARTNERSHIP
KIMBALL HILL MARBELLA ESTATES LIMITED PARTNERSHIP
INDIAN TRAILS LIMITED PARTNERSHIP
ASTOR PLACE LIMITED PARTNERSHIP
BOLINGBROOK LIMITED PARTNERSHIP
EDGEWATER LIMITED PARTNERSHIP
HUNTINGTON CHASE LIMITED PARTNERSHIP
LEGEND LAKES LIMITED PARTNERSHIP
WATERFORD LIMITED PARTNERSHIP
WHISPERING MEADOW LIMITED PARTNERSHIP
WHITE OAK LIMITED PARTNERSHIP
KIMBALL HILL CENTENNIAL HEIGHTS LIMITED PARTNERSHIP
KIMBALL HILL HEATHERS/CAPAROLA LIMITED PARTNERSHIP
KIMBALL MOUNTAIN FIRST LIMITED PARTNERSHIP
KIMBALL COVE LIMITED PARTNERSHIP
GABLES AT HIDDENBROOK LIMITED PARTNERSHIP
PARK SHORE, L.L.C.
KIMBALL HILL URBAN CENTERS SPECIAL PURPOSES, L.L.C.
| |  | By:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

---



| |  | U.S. BANK NATIONAL ASSOCIATION, as Trustee
| |  | ------------------------------------------
| |  | By:                                       

---



QuickLinks