This is actually a Warrick design. We replaced an existing old and rotten garage with a new 16’-10” x 20’ long garage. The left hand wall is along the property line, which in Seattle is OK in the rear portion of your property, using the existing foundation wall. We poured a new foundation on the right hand and rear then capped the old slab with a new one. This was created as an art studio and has a small loft in the rear half of the structure. Due to the City of Seattle codes this is as large as they could build and pushes the size and height limit to the maximum.