Colliers International (CIGI) 40-F 2008 FY Annual report (Canada)

EXHIBIT 32

CERTIFICATION

PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT

TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report on Form 40-F of FirstService Corporation (the “Company”) for the fiscal year ended March 31, 2008 (the “Report”) filed with the United States Securities and Exchange Commission on the date hereof, I, Jay S. Hennick, Chief Executive Officer of the Company, certify, pursuant to 18 USC. section 1350, as enacted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

1.   The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  May 21, 2008

/s/ Jay S. Hennick                                                      

Jay S. Hennick

Chief Executive Officer

CERTIFICATION

PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT

TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report on Form 40-F of FirstService Corporation (the “Company”) for the fiscal year ended March 31, 2008 (the “Report”) filed with the United States Securities and Exchange Commission on the date hereof, I, John B. Friedrichsen, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 USC. section 1350, as enacted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

1.   The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  May 21, 2008

/s/ John B. Friedrichsen

John B. Friedrichsen

Senior Vice President and Chief Financial Officer