Accessory Structures in Spalding County, GA (2026)
3 rules for unincorporated Spalding County, Georgia.
Verified from official government sources
ADU Rules
Unincorporated Spalding County treats a mother-in-law suite as a permitted accessory use in agricultural and residential districts such as AR-1, with no separate permit category beyond the standard accessory-use listing. Inside the Tri County Crossing Overlay near U.S. Highway 19/41 and Zebulon Road, an accessory dwelling unit gets a hard numeric cap: it cannot exceed forty percent of the primary dwelling's floor area.
Spalding County ADU / Garage Apartment Rules
Light RestrictionsSpalding County Zoning Ordinance, Appendix IV §§ 203(31), 209(15), 503(C)(17), 2202B(A), 2205B(A)(1)
31.Mother-in-law suite: An accessory structure to a single-family detached dwelling. ... 15.Garage apartment: A self-contained housing unit built within or on top of, a garage. It may be attached to or detached from the main house but shall have a separate entrance from the main house. ... 16.Foster home.17.Mother-in-law suite. ... A.Accessory dwelling unit: A dwelling unit not greater than for...
Shed & Carport Rules
A one-story detached shed, playhouse, or similar tool and storage building on residential property in unincorporated Spalding County needs no county building permit if its floor area is 120 square feet or less. Larger accessory buildings, or anything more than one story, fall under the standard building permit process and must still meet the setback and placement rules in the county's zoning ordinance, Appendix IV.
Spalding County Shed Permit Exemption
Some RestrictionsSpalding County Code § 8-1006(1)(d)(A)(1)
(d)Work exempt from permitting. Exemptions from permit requirements shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of the construction codes or any other laws and ordinances of Spalding County. Permits shall not be required for the following:(A)Building:1)One-story detached accessory structures used as tool and storage sheds, play...
Tiny Homes
Spalding County's zoning ordinance defines a tiny house as a principal dwelling on a permanent foundation with 400 heated square feet or less, under Zoning Ordinance Section 209(30). The code treats a tiny house as a standalone primary residence, not an accessory structure, and sets no separate placement or district standards beyond that single definition.
Spalding County Caps Tiny Houses at 400 Square Feet
Few RestrictionsSpalding County Zoning Ordinance, Appendix IV § 209(30)
30.Tiny house: A principal dwelling, with a permanent foundation, with four hundred (400) heated square feet or less.
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