Accessory Structures in Decatur, GA (2026)
2 verified accessory structures rules for Decatur, Georgia, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
In the City of Decatur, Georgia (DeKalb County), an accessory dwelling unit is a limited use allowed only behind a single-family detached house, duplex or walk up flat. UDO Section 6.8.3.A caps a Decatur ADU between 300 and 800 square feet, at no more than 40 percent of the principal home's floor area, with two bedrooms maximum and one ADU per lot.
Decatur, GA Accessory Dwelling Unit Rules
Some RestrictionsDecatur Unified Development Ordinance §§ 6.3.1.G, 6.8.3.A
Where an accessory dwelling unit is allowed as a limited use, it is subject to the following: ... 1.An ADU is only allowed as an accessory use to a single-family detached house, duplex, or walk up flat and shall be subject to the Standards for Specific Accessory Uses in Section 6.8.3.2.An ADU as an accessory use to a four-unit walk up flat shall be subject to the Standards for Inclusionary Dwel...
Shed & Carport Rules
Decatur's Unified Development Ordinance caps accessory buildings, including garden sheds, at 1,000 square feet of floor area, 25 feet in height and two stories, with no more than two accessory buildings allowed per lot (structures under 100 square feet don't count toward that cap). A shed must share utilities with the main house and can't be lived in unless approved as an accessory dwelling unit.
Decatur, GA: Accessory Building & Shed Rules
Some RestrictionsDecatur Unified Development Ordinance § 6.8.1
D.Dimensional standards for accessory buildings are included with the principal structure standards for each district (Article 3, Residential Districts and Article 4, Mixed Use and Commercial Districts). No more than two accessory buildings are allowed per lot, excluding structures less than 100 square feet.E.Accessory buildings shall not exceed 1,000 square feet of total floor area, inclusive ...
Looking for DeKalb County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Decatur city rules.
Accessory Structures in DeKalb County →