The housing market dominates conversation for many Canadians, especially when it comes to the lack of affordable homes. Absent a trade war, it is the subject that ranks most important to many of us. And it’s not just about the real estate market — housing now dominates the Canadian economy. Peter Gilgan founded the largest private home builder in North America, Mattamy Homes. He talks to host Amanda Lang about what’s been driving up prices, the impact of investors and his bet on modular home building.