Square footage doesn't include basements. The A-house is a two story duplex with basement. Typical examples have wood clapboard siding horizontally on the top floor and shingles on the bottom floor. Interior floors are softwood fir with linoleum in the kitchen and bathroom. The B-house is a 1 story duplex with basement.
Interior floors are softwood fir with linoleum in the kitchen and bathroom.
The C-house is a 1 story duplex with basement similar to a B house. Interior floors are softwood fir with linoleum in the kitchen and bathroom. The D-house is one and a half stories with a basement. Interior floors are hardwood oak with linoleum in the kitchen and bathroom. The E-house is one story tall with basement.