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Clayton County, GA Accessory Structures: Garage Conversions (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified July 2026

Garage conversion rules in Clayton County, GA, sometimes called garage-to-ADU or accessory living unit conversions, govern permits, ceiling height, egress, and parking replacement.

Key Facts

Classified as
Accessory dwelling
Allowed districts
AG, ER, RS-180
Approval
Conditional use
Max per lot
One unit
Codes
Building and health code required

Summary

Clayton County treats habitable garage quarters as an accessory dwelling. Converting a garage into living space, or building an apartment over a detached garage, is allowed only as a conditional use in the AG, ER, and RS-180 districts, one per lot.

These county ordinances apply to unincorporated areas of Clayton County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Accessory dwellings shall include basement quarters, garage quarters, caretaker or other employee quarters, guest houses, mother-in-law suites... The accessory dwelling may be located in a second floor over a detached garage or may be a separate structure.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 104).

Full Breakdown

Under the Clayton County Zoning Ordinance (Sec. AS-05), 'garage quarters' are one type of accessory dwelling. That means turning a garage into a living unit, or adding an apartment on a second floor over a detached garage, is regulated as an accessory dwelling: conditional-use approval, only in AG, ER, and RS-180, one per lot, and full compliance with building and health codes. Freestanding garage-based units must sit in the rear yard, meet Article 3 setbacks, and require an added parking space. A simple garage remodel that stays a garage (no separate dwelling) is not an accessory dwelling. City residents follow their own municipal code.

Violations & Fines

An unpermitted garage conversion to living space is a zoning and building-code violation; the county may require permits, reversal, or fines.

Frequently Asked Questions

Can I rent out an apartment over my garage?
Only if it is an approved accessory dwelling in the AG, ER, or RS-180 district under a conditional use; otherwise it is prohibited.
Is a plain garage remodel regulated?
A remodel that keeps the garage a garage needs a building permit, but is not an accessory dwelling. Adding living quarters triggers the AS-05 rules.

Sources & Official References

Other rules in Clayton County

Parking Rules: Overnight ParkingSome RestrictionsADU RulesSome RestrictionsShed & Carport RulesSome RestrictionsADU Owner OccupancySignificant RestrictionsTiny HomesSome RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: Driveway RulesSome RestrictionsParking Rules: Curb Color RulesSome RestrictionsFence Regulations: Fence Permit RequirementsSome RestrictionsFence Regulations: Material RestrictionsSignificant Restrictions

All Clayton County rules

Compare Clayton County to another location·View the Georgia accessory structures overview

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