Columbus, GA Accessory Structures: ADU Rules (2026)
ADU rules in Columbus, GA, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Governing section
- UDO § 3.2.29 and Table 3.2.3
- Accessory dwelling types
- Employee residence, groom's quarters, guest cottage, security
- Guest cottage size cap
- 1,000 sq ft incl. garage/porch
- Groom's quarters cap
- 500 sq ft per unit, 1 per 5 stalls
- Rental of unit
- Prohibited for all four types
- Security quarters exception term
- 2 years, one 6-month extension
- First-offense penalty
- $500 civil fine, up to $1,000/day
Summary
Columbus, Georgia's Unified Development Ordinance recognizes four accessory dwelling types on a residential lot: employee residences, groom's quarters, guest cottages, and security quarters. Each must satisfy the lot-size, unit-count, floor-area, and use limits in UDO Table 3.2.3, may be attached to or detached from the main house, and must otherwise meet every property-development standard that applies to the principal dwelling.
Accessory dwellings shall comply with the standards listed below.A.Types of Accessory Dwellings. Four types of accessory dwellings may be established:1.Employee residence;2.Groom's quarters;3.Guest cottage; and4.Security quarters.B.Standards. Accessory dwellings shall comply with the standards listed in Table 3.2.3.C.Location. An accessory dwelling may be attached or detached from the principal structure.D.Property Development Regulations. The dwellings shall comply with all property development regulations for the principal structure. ... (E)Exception. The Director may approve a special exception use to allow a security quarters in association with an ongoing residential development project, subject to the standards listed below.(1)The dwelling shall not be a mobile home, but may be a manufactured dwelling.(2)The Director may approve such quarters for a period of not to exceed two years. Extensions of not more than six months may be granted to allow completion of the project.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 75).
Full Breakdown
3. A guest cottage needs a principal-structure lot of at least one acre, caps at 1,000 square feet including any enclosed garage or porch, and is limited to one per lot, and only if no other accessory dwelling unit already exists there; it may only house a guest of the resident. 5-acre lot, the same 1,000-square-foot cap, one per lot, and may only be occupied by someone employed in the upkeep of the principal dwelling or assisting its resident. Groom's quarters carry no minimum lot size but are capped at one unit per five horse stalls and 500 square feet per unit; they may sit inside a barn or as a separate accessory structure, may include shared bathing and kitchen facilities sized to the number of grooms housed, and may only be occupied by someone employed in caring for horses and equestrian activity on the same site.
Security quarters, capped at one per project, house security personnel for nonresidential uses and may not be a mobile home, though a manufactured dwelling is allowed; the Director may grant a special-exception security quarters tied to an active residential development for up to two years, with one six-month extension to finish the project. Every accessory dwelling may be attached to or detached from the principal structure, but must otherwise comply with all of the principal structure's property-development regulations, including the same setbacks, height, and lot-coverage rules. (Ord. No. )
Violations & Fines
Columbus enforces UDO use standards under § 12.5.4: any person violating a UDO provision, or defying a final order from the Director of Planning, Inspections and Codes, Engineering, or the City Arborist, faces a civil penalty of up to $1,000 per day, with a minimum $500 fine for a first offense at a property and $1,000 for each later offense there. Municipal and recorder's courts may impose the penalty, and each day of noncompliance counts as a separate offense.
Frequently Asked Questions
Can an accessory dwelling in Columbus, GA be rented out separately?
How large can a guest cottage be on a Columbus property?
Who is allowed to live in groom's quarters?
Can the City approve temporary security quarters during construction?
Sources & Official References
Other rules in Columbus
How Columbus compares: Easiest Cities to Build an ADU·Compare Columbus to another location·View the Georgia accessory structures overview
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