Section R. 400.10639 - GaragesRule 639.
(1) A garage that is located beneath a residential group home facility shall have walls, partitions, floors, and ceilings that separate the garage from the rest of the facility by construction that has at least a 1-hour-fire-resistance rating.(2) A garage that is attached to a facility shall be separated from the rest of the facility by construction that has at least a 1-hour-fire-resistance rating.Mich. Admin. Code R. 400.10639