The garage slab is opened up and a hole is dug on the interior to enable sewer and water connections.  The 4" house drain and 1/2" water line run close together and right under the garage wall footing.  Bringing up a drain in 3" cast iron and water supply in 3/4" copper is an interesting puzzle.  Here, the framing, rough plumbing, rough electric, insulation, and sheetrock, which Jim has painted, are complete:

Same wall, done:

Cadet space heater, Marvin window:

New sheds are roofed with composite shingles to match garage: