All new home buyers should familiarize themselves with the Tarion warranty.  
Tarion formerly known as the Ontario New Home Warranty Program, was created by the Government of Ontario in 1976 to administer the Ontario New Home Warranties Plan Act. Its primary purpose is to protect consumers of new homes by ensuring that builders abide the provincial legislation

The level and amounts of compensation like in any insurance policy, vary and have stipulations. Today Ema provides a brief overview of the plan itself.