Samiam sauna pool house is 17 ft. 5 in x 13 ft. building kit | Hud-1 EZ Buildings This Sauna Pool house series Samiam building kit includes 229 sq. ft. The building is an excellent addition for a homeowner to use as a hobby room, workshop, home office, 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 expenses.