12 ft. 5 in. x 18 ft. 10 in. D.I.Y. building kit with 12 ft. 5 in. x 7 ft. porch | Hud-1 EZ Buildings The Monte 44 building includes 139 sq. ft. of interior space and a 96 sq. ft. covered porch. The building is an excellent addition for a homeowner to use as a hoby room, garden house, guest room, weekend getaway cabin or just some additional living space. This is the perfect building for the DIY and easy weekend project to add more usable space without the expense of a room addition.