Accessory Structures in Alpharetta, GA (2026)
3 verified accessory structures rules for Alpharetta, Georgia, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Alpharetta's Unified Development Code allows a 'For-Sale' accessory dwelling above or behind a commercial or office building in the O-P office-professional district, but only if it is attached by a common wall, occupied by a family that includes the business's owner or tenant, and no larger than 40% of the combined building square footage.
Alpharetta O-P Accessory Dwelling Rules
Significant RestrictionsAlpharetta Unified Development Code § 2.2.12
1.Dwelling, 'For-Sale', Accessory: A 'For-Sale' accessory dwelling shall be permitted under the following conditions: The dwelling shall be located above or to the rear of the commercial or office structure to which it is an accessory. The dwelling shall be attached by a common wall with the commercial or office structure to which it is accessory. The dwelling shall be occupied by a single fami...
ADU Owner Occupancy
In Alpharetta's O-P office-professional zoning district, the Unified Development Code lets a business add a 'For-Sale' accessory dwelling above or behind its commercial or office building, but only if a family member of the building's owner or tenant lives there. The unit cannot exceed 40 percent of the combined floor area, and it must meet the same building and life-safety codes as the principal structure.
Alpharetta O-P Accessory Dwelling Owner Rule
Some RestrictionsAlpharetta Unified Development Code §§ 2.2.12(B)(1), 5.9.2
B.Accessory Uses. ... A property in the O-P district may contain any accessory structure or use customarily related to and clearly subordinate to any principal use that is permitted by right or through approval as a conditional use on the same property ... 1.Dwelling, 'For-Sale', Accessory: A 'For-Sale' accessory dwelling shall be permitted under the following conditions: The dwelling shall be ...
Shed & Carport Rules
A backyard shed or tool room in the City of Alpharetta must keep a 10-foot setback from the rear and side lot lines, or match the principal house's setback if smaller, under Unified Development Code Section 2.3.3.C.3. The shed also cannot exceed 20% of the size of the main house or sit in the required front yard.
Alpharetta Shed Setback and Size Rules
Some RestrictionsAlpharetta Unified Development Code § 2.3.3.C.3
C.Uses Customarily Accessory to Dwellings Located in Residential Zoning Districts. Each of the following uses is considered to be a customary accessory use to a dwelling, and as such, may be situated on the same lot with the principal use to which it serves as an accessory provided that the setback and yard requirements are met and provided that the accessory structure is not located closer to ...
Looking for Fulton County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Alpharetta city rules.
Accessory Structures in Fulton County →