Atlanta

Fulton County portion

ADU Pass helps homeowners in Atlanta, Fulton County, Georgia navigate the permit paperwork for building an accessory dwelling unit. This area covers 24 ZIP codes.

24 ZIP codes

ADU details

ADU legality: unclear

Stateunclear (Georgia accessory-dwelling framework) — Georgia statewide ADU posture per state-adu-research file.
Countywith-restrictions (Fulton County unincorporated zoning) — Fulton County permits ADUs in unincorporated areas under state-law-aligned standards. Within Atlanta city limits the city ordinance plus state law govern.
Citywith-restrictions (City of Atlanta Municipal / Zoning Code — Accessory Dwelling Units) — City of Atlanta permits ADUs under the local ordinance aligned with Georgia statewide framework where applicable. Fulton County seat (small portion in DeKalb); Georgia state capital; Hartsfield-Jackson airport.

Georgia leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Atlanta permits ADUs subject to local conditions per its zoning ordinance.

Cost scenarios

ScenarioSq ft PermitBuildTotal
minimum 150 $1,500 $36,750 $38,250
600 600 $1,500 $147,000 $148,500
midpoint 525 $1,500 $128,625 $130,125
maximum 900 $1,500 $220,500 $222,000
Fee breakdown
Plan review$450
Building permit$825
Impact fees$225
Total$1,500

Viability (permitted uses)

  • Long-term rental: yes Long-term rental of ADU generally permitted; landlord-tenant law and any city rental-registration ordinance apply.
  • Short-term rental: with-restrictions STR rules vary by city. Atlanta regulates STRs separately from ADU permitting; check local STR ordinance and HOA covenants.
  • Office rental: with-restrictions Detached office rental requires home occupation permit or rezoning.
  • Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
  • Studio / workshop: yes Personal artist studio is a permitted accessory use.
  • Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
  • Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.

Utilities

  • Water: Atlanta Water Utility · 30d connect · $4,500
  • Sewer: Atlanta Sewer / Wastewater · 30d connect · $5,500
  • Electric: Atlanta Electric Utility · 21d connect · $1,800
  • Gas: Atlanta Gas Utility · 30d connect · $1,500

Property values & taxes

Median value$425,000
Median tax$4,675/yr
Effective rate1.1%

Construction timeline

Detached build24 weeks
Conversion14 weeks
Contractor lead3 months

Realistic total: best 7mo · typical 10mo · worst 16mo

Financing

Insurance impact

Annual premium delta$380
Landlord policyrecommended
Umbrella threshold$1M umbrella when renting

HOA prevalence & preemption

State HOA preemptionno

Georgia has no HOA-ADU preemption; HOA covenants restricting ADUs are enforceable.

Regulatory overlays (2)

  • historic-district
    Atlanta historic districts trigger Architectural Review Board / Historic Preservation Commission review for ADUs in historic boundaries.
  • airport-noise-zone
    Airport noise contours affect some parcels and may require sound-attenuation construction.
Technical envelope (climate & building code)

Climate & energy code

IECC climate zone3A
Heating degree days2,800
Cooling degree days2,000
Design low / high18°F / 94°F
Frost depth8"
Design snow load5 psf
Wind design speed115 mph
Seismic design cat.B
Annual rainfall54"
Wildfire exposurelow
Energy codeIECC
Version / adopted2015 / 2020

Building code

Base codeIRC
Version year2,015
Adopted2020
Fire sprinklernone
Egress window5.7 sqft min
Min ceiling7 ft
Attic R-valueR-38 min
Wall R-valueR-13 min

Amendments:

  • Amendment
  • Amendment
Fulton County — county ADU rules and overlays

County ADU ordinance

Fulton County (state-capital county; ~1,066,000 residents — Georgia's most populous — encompassing Atlanta, Sandy Springs, Roswell, Alpharetta, Johns Creek, Milton, Union City, College Park, East Point, Fairburn, Hapeville, Palmetto, Chattahoochee Hills, and unincorporated south Fulton tracts) regulates land use in unincorporated areas through the Fulton County Zoning Resolution, administered by the Fulton County Department of Community Development. Georgia's HB 514 (2025 session, vetoed; reintroduced 2026 as HB 374) is the closest the state has come to ADU preemption; it has not been enacted, so Georgia's stateAduLaw remains netEffect 'no-statewide-law'. Unincorporated Fulton County permits 'accessory residential structures' / 'accessory apartments' in agricultural and large-lot residential districts (AG-1, R-1, R-2, R-3) by right subject to lot-area minimums, size caps (commonly 1,000 sq ft or 50% of principal dwelling), and owner-occupancy. Smaller residential districts treat ADUs as conditional uses requiring Board of Zoning Appeals approval. The Fulton County Board of Commissioners updated the Zoning Resolution most recently in 2023.

County regulatory overlays

Georgia state — ADU law and programs

State financing programs

Georgia does not operate an ADU-specific statewide loan, grant, or forgivable-loan program. The Georgia Department of Community Affairs (DCA) administers the Georgia Dream homeownership program, which includes the Georgia Dream Standard, Georgia Dream Hardest Hit Fund DPA, and (effective 2025-07-01) the Georgia Dream Peach Advantage Loan Program for expanded down-payment assistance. None target ADU construction directly; an ADU-bearing primary residence can qualify for the underlying Georgia Dream first mortgage when other eligibility criteria are met.

Federal (United States) — ADU-relevant rules and programs

Federal ADU law

The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.

Federal financing programs

Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.

Federal tax credits

There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.

Federal housing programs

HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.

ZIP Codes

  • 30303
  • 30305
  • 30306
  • 30308
  • 30309
  • 30310
  • 30311
  • 30312
  • 30313
  • 30314
  • 30315
  • 30318
  • 30324
  • 30326
  • 30327
  • 30328
  • 30331
  • 30336
  • 30337
  • 30344
  • 30349
  • 30350
  • 30354
  • 30363

Post Office

  • 1185 Hightower Trl, 30350
  • 1590 Jonesboro Rd SE, 30315
  • 1800 James Jackson Pkwy NW, 30369
  • 2385 Godby Rd, 30349
  • 2414 Herring Rd SW, 30311
  • 3799 Main St, 30337
  • 3900 Crown Rd SW, 30304
  • 400 Pryor St SW, 30303
  • 415 Plasters Ave NE Ste 100, 30324
  • 50 Sunset Ave NW, 30314
  • 5686 Fulton Industrial Blvd SW, 30336
  • 570 Piedmont Ave NE, 30308
  • 650 S Central Ave, 30354
  • 780 Morosgo Dr NE, 30324
  • 822 Ralph Mcgill Blvd NE, 30306
  • 848 Oglethorpe Ave SW, 30310

Locale Names