In Boston and surrounding areas the “triple decker” is very common - three 1000 square foot condos, driveway leading to compact car parking in back, small yard

In Boston and surrounding areas the “triple decker” is very common - three 1000 square foot condos, driveway leading to compact car parking in back, small yard or none at all. The buildings are not connected but the space between is the driveway on one side and a small path on the other to store trash cans. There are tens of thousands of these if not hundreds of thousands.