The B-53 is our largest home. It can be built as a 2 bedroom (777 sq ft) or 3 bedroom (874 sq ft) house. The 3rd bedroom is an optional add-on bedroom that is on the first floor level. The top floor houses two additional bedrooms. Each story of the house is 7'6" tall at its peak. The upstairs bedrooms have sloped ceilings on the sides, and the closets are positioned in the lower ceiling space. The exterior height of the B-53 is 20' 9". This house is not designed to be portable. We sell the plans to build it on location.