Home Plan Additions & Free Shipping! (THD-6236) This beautiful two-story, 800 square foot house plan addition is a great option when trying to incorporate more space into your existing home. A large new first floor family room with fireplace and a breakfast room is the perfect place for spending time with the family. The second floor will be your retreat. A spacious master suite with fireplace and private porch will allow you to decompress at the end of a long day. The master bathroom includes a tub, oversized shower and dual sinks. Two additional walk-in closets complete this fabulous home plan addition.