The Province of BC has released the transitional rules for HST that effect the construction and housing industry. The new rules come into effect as of November 19th, 2009 and may have a direct impact on new sales agreements. These rules are effective immediately.

News release at:
http://www2.news.gov.bc.ca/news_releases_2009-2013/2009FIN0017-000647.htm

Additional information:
Residential Housing New Housing Rebates and Transitional Rules for British Columbia HST (PDF)