Comment by db48x

My Grandfather’s house was like that when he bought it. It was built on a hill that sloped down from the street. The ground floor was actually several feet below the level of the street, with just enough crawl space at the front edge of the house. He jacked the whole house up to street level, dug out the basement, poured a concrete slab under the whole house, built concrete block walls around the whole thing, and built a staircase up to the main hall on the ground floor. Half of the new floor became a basement workshop, and the other half became four bedrooms and a bathroom for the children (there were only three bedrooms upstairs). Even then six of the children were still sharing a room.