Hi @SlimboyFat71
Imo if the garage is attached to a single family home, it’s a single family garage and ineligible. For me it’s mostly the front door for definition. One front door + more than one family with theire own inner front door behind = not SFPRP, one front door + one family behind = SFPRP.
Than, as a second thing, can it be sanctioned art on the outer wall of a garage? If yes that could maybe help to define that wall.