Garage conversion rules in Cobb County, GA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions to living space in Cobb County require a building permit and compliance with IRC/2024 Georgia codes. Original parking minimums must still be satisfied. ADU rules do not currently apply (no ADU ordinance).
Converting a garage to habitable living space in unincorporated Cobb County requires a building permit from the Building Division. The conversion must meet current Georgia construction codes (IRC with Georgia amendments) — covering egress, insulation, ceiling height, electrical, HVAC, and fire separation. Since Cobb County does not currently have an approved ADU ordinance, a garage conversion cannot legally create a separate dwelling unit detached from the primary residence. The original off-street parking requirements for the property must still be satisfied after conversion. Applications are submitted through Cobb County Building Division.
Unpermitted conversion: $500 to $2,000. May require restoration to garage or retroactive permitting.
Cobb County, GA
Cobb County §50-257 — keeping any animal that by frequent or long-continued noise disturbs comfort or repose of persons in the vicinity is a violation. Cobb ...
Cobb County, GA
Cobb County Ch. 50, Art. VII — construction noise subject to 70 dB daytime limit. Sunday construction permitted 9 AM–6:59 PM (2023 amendment). Residential pr...
Cobb County, GA
Cobb County quiet hours are 11 PM–7 AM (Code §50-256/50-257). Daytime noise limit 70 dB, nighttime 65 dB (2023 amendment). Any unreasonable noise plainly aud...
Cobb County, GA
Cobb County regulates amplified music under the general noise ordinance. Sound permits available for events. O.C.G.A. §16-11-39 applies to unreasonable distu...
Cobb County, GA
Cobb County Zoning Ch. 134 — in R-40, R-80, RR zones, combinations of boats/RVs exceeding 3 must be screened from public roadways. Outside storage generally ...
Cobb County, GA
Cobb County Ch. 134 — only 1 business vehicle (resident's use only) may park on residential premises. No materials or equipment storage. Off-site employees m...
See how Cobb County's garage conversions rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.