Johns Creek, GA Accessory Structures: Garage Conversions (2026)

Johns Creek's Zoning Ordinance contains no provision specifically titled garage conversion. It does address garages in two ways. First, Article III lists detached garages among the examples of accessory structures in single-family districts, so a detached garage must follow the accessory-structure placement rules (rear or side yard, outside the minimum yard / setback). Second, Article XVIII (Off-Street Parking) provides that within single-family and AG-1 districts, garage and carport spaces may count toward the minimum required parking spaces, and that no more than two carport or garage spaces may offset the minimum parking requirement. The practical effect is that converting an attached garage to heated living space can leave a home below its required off-street parking count, which must be made up with conforming parking spaces (not in the front-yard area beyond the 35% paving limit). If the converted space becomes an independent dwelling with its own kitchen, it is regulated as a Guest House under Section 19.3.5 (one per lot, 650-1,500 sq ft, rear yard, no rent). Georgia has no statewide garage-conversion statute, so these local zoning rules, plus building-permit and code requirements, govern. Confirm parking and permit details with Community Development before converting a garage.