Any purchase and sale agreements signed after June 18, 2009 were subject to HST (unless the unit closes on June 30, 2010 or earlier). A Ministry of Revenue bulletin #2 outlines disclosure requirements for builders - essentially the builder is required to fully disclose to you whether or not the HST is included in the purchase price (this info will be contained in a clause within the purchase and sale agreement).
Originally Posted by newbuyer
Most builders have adjusted their pricing to reflect the new tax, but you should double check as your unit is going to be closing well after the implementation date for the tax.
UT Member Since February 2002