EXHIBIT 16. LETTER FROM PERRELLA & ASSOCIATES, PA [LETTERHEAD OF PERRELLA & ASSOCIATES, PA] October 5, 2004 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Re: HouseRaising, Inc. (the "Company") F/k/a Technology Connections, Inc. File Ref. No. 000-50701 Gentlemen: We were previously the principal accountant for Technology Connections, Inc. and, under the date of April 12, 2004, we reported on the financial statements of Technology Connections, Inc. as of December 31, 2003 and for the years ended December 31, 2003 and 2002. We also reviewed the financial statements of Technology Connections, Inc. for the interim period ended March 31, 2004. On September 22, 2004, we resigned as principal accountant for Technology Connections, Inc. [HouseRaising, Inc.]. We have read Technology Connections [HouseRaising, Inc.'s] statements included under Item 4 of its Form 8-K/A dated October 5, 2004, and we agree with such statements. Very truly yours, /s/ Perrella & Associates, PA - --------------------------------------------- Perrella & Associates, PA