Boston’s three-deckers remain a mainstay, but bigger buildings are on the rise Dillon said few new three-deckers are expected to be built in the future, though the city encourages people to live in existing ones by by offering home repair and downpayment assistance programs. “In the last 50 years, none of that [triple-decker] housing has been built. Instead, it has been high-rise apartments, especially luxury ones,” said […]