It probably wouldn't cost that much (relative to both the building and the transaction costs) to require an energy rating as part of a home sale or rental. Ren

It probably wouldn't cost that much (relative to both the building and the transaction costs) to require an energy rating as part of a home sale or rental. Rentals wouldn't need constant testing to make at least some difference in the market (like say one large apartment building is built with more insulation than another one nearby).