Straight answers
Are tiny homes legal in Georgia, and where can you put one?
Yes on a foundation, wherever the city or county allows a house or a backyard unit that small. Georgia's Department of Community Affairs says a tiny home is a dwelling and is held to the same building code as any other house, and that the state codes reach only two kinds of tiny home: one built on site and a factory-built modular one. The state residential code carries a tiny house appendix, but an appendix is enforceable only where the state or the local government has adopted it, and the Department's own fact sheet says this one must be adopted locally. Where a home may stand is a zoning question, and zoning is local. We found no Georgia law that makes a city or county allow a backyard home: a 2026 bill that would have done so for homes of 400 square feet or less passed the House and stopped in the Senate. A tiny home on wheels is outside the building codes, and the Department says recreational vehicles are intended for recreational or seasonal use only.
Figures verified against the sources below · October 6, 2026
01 — The longer answer
What Georgia decides, and what your city or county decides
The state code has a tiny house appendix, and it is optional
The Department of Community Affairs lists the International Residential Code, 2024 Edition, with Georgia Amendments among the current mandatory state codes, and the amendment packet is dated 1 January 2026. The packet opens with a rule that decides the tiny house question: appendices are not enforceable unless they are specifically referenced in the body of the code or adopted by the Department or the authority having jurisdiction. Georgia amends Appendix BB, Tiny Houses, in two places, deleting the section on alternating tread devices and adding a section that requires smoke and carbon monoxide detectors. It does not say the Department adopts the appendix, the way the same packet says it adopts the disaster resilient construction appendix as optional. The Department's tiny house fact sheet puts it plainly: the appendix must be adopted locally to be enforced. Older pages call it Appendix Q, which was its name before the 2024 edition. So the first question for a building official is whether the city or county has adopted the appendix. Where it has not, a small house is designed to the body of the code.
Is there a minimum size for a house in Georgia?
Not in the state building code as a whole-house figure. The fact sheet describes a tiny house as a single-family home that is generally 400 square feet or less, excluding lofts, and says Georgia amended its residential code to lower the minimum habitable room from 120 square feet to 70 so that small homes could comply. It lists the code issues that shape a small design: room size, lofts, headroom, means of escape, egress width and stairs. One Georgia rule works in a small home's favour. The amendments state that fire sprinklers shall not be mandatory in one- and two-family dwellings, citing O.C.G.A. 8-2-4. A minimum house size, where there is one, comes from local zoning. The fact sheet names the minimum size of lots and buildings among the things local zoning typically regulates.
Zoning is local, and no state law makes a city allow a backyard home
The Department tells builders and buyers that tiny houses, like all other houses and recreational vehicles, are subject to the zoning requirements of local governments, which vary widely by jurisdiction, and that the first step is to obtain permission from the local government to site the home. Local zoning typically covers land use, location, height, width, type of foundation and number of stories. The General Assembly considered changing that in 2026. House Bill 1166, captioned as providing that zoning decisions shall not affect or be required for certain residential dwellings of 400 square feet or fewer, was sent to the Senate committee on State and Local Governmental Operations, and the legislature's record shows its last action as a second reading in the Senate on 27 March 2026. It has no record of final passage. Until a bill like it becomes law, the answer for your lot is in your city's or county's zoning ordinance.
A factory-built tiny home needs the state insignia
Georgia's Industrialized Buildings Program covers buildings of closed construction, meaning they cannot be inspected at the site without taking them apart. Manufacturers must obtain state approval for their manufacturing systems and quality control procedures, and the buildings are inspected during manufacture by independent third parties. A state-approved building carries a Department insignia, and an approved building is deemed to comply with all local ordinances and laws relating to its construction. That is the protection worth knowing: the local building department does not re-inspect what the factory closed up. It does not reach placement. The Department says the program does not supersede local zoning, and that local governments keep control over installation at the site, including subdivision controls, zoning, grading, foundation installations and utility hook-ups. The fact sheet adds that a residential industrialized building shall be affixed to a permanent load-bearing foundation. Ask any manufacturer, ours included, whether the model you are buying will carry the insignia.
A tiny house on wheels is outside the building codes
The fact sheet says a tiny home built on a trailer chassis and kept in a mobile-ready state is a wheeled vehicle that does not fall within the scope of the state's building codes, and that these homes are typically classified as recreational vehicles or park models. It describes recreational vehicles as built to the ANSI A119.2 standard and intended for recreational or seasonal use only, and a park model as a unit of 400 square feet or less built to ANSI A119.5 that can be semi or permanently sited. Where any of them may be sited is, in the Department's words, regulated and controlled by local planning and zoning ordinances. Registration runs through the county tag office. The Department of Revenue says Georgia does not issue titles for homemade trailers: the owner files a homemade trailer affidavit, the county assigns a serial plate, and a law enforcement officer certifies that it has been attached before a license plate is issued.
Atlanta and Decatur
Two cities show how far local rules differ. Atlanta's Department of City Planning says detached accessory dwelling units are allowed in the R4, R4A and R5 districts and in several special and historic districts, and describes the detached size allowance as 750 square feet. The same page sets out a proposal to raise that to 1,000 square feet and to allow attached units, and says the proposal would not extend to the R1 through R3 districts. The page is undated, so read the current zoning ordinance before designing to either figure. Decatur allows an accessory dwelling unit, attached or detached at the rear of the property, in its R-50, R-60, R-85, RS-17, RM-18, RM-22, RM-43 and PO districts, one per primary dwelling unit, under section 6.8.3 of its Unified Development Ordinance. Neither city is a guide to the county next door.
Can you live in a tiny home full time in Georgia?
In one built as a house, yes, where the zoning allows that house. A site-built or modular tiny home on a permanent foundation is a dwelling under the state code. The fact sheet says site-built dwellings must comply with the current residential code and be constructed by a state licensed contractor where state law requires one. A manufactured home is a third route with its own rules: the Department says manufactured homes are built on a metal chassis to the federal HUD code and are not regulated by the building codes. A home on wheels is the hard case, because the state describes recreational vehicles as recreational or seasonal and leaves siting to the local ordinance.
Lists of which Georgia counties allow tiny homes circulate widely. The state sources we read give the decision to each local government, and none of them publishes a county list, so the rule for your land is in your own city's or county's ordinance. The Georgia guide carries the code in force and the design conditions, with the source for each figure.
03 — Sources
Each figure above links to the authority it came from.
Georgia Department of Community Affairs, Current State Minimum Codes for Construction: the International Residential Code, 2024 Edition, with Georgia Amendments (2026) is listed among the current mandatory codes as adopted by DCA
dca.georgia.govGeorgia State Amendments to the International Residential Code (2024 Edition), revised January 1, 2026: appendices are not enforceable unless they are specifically referenced in the body of the code or adopted by the Department of Community Affairs or the Authority Having Jurisdiction; fire sprinklers shall not be mandatory in one- and two-family dwellings (O.C.G.A. 8-2-4); Appendix BB, Tiny Houses: section BB104.2.3, Alternating Tread Devices, deleted without substitution, and new section BB107, Smoke and Carbon Monoxide Detectors, added (effective January 1, 2026); Appendix U, Disaster Resilient Construction, adopted by the Department as optional
dca.georgia.govGeorgia Department of Community Affairs, Enforcement of State Minimum Codes: the appendices of the codes are not enforceable unless referenced in the body of the code, adopted by DCA, or specifically adopted by a municipality or county; appendices adopted by DCA are noted in the Georgia amendments as such
dca.georgia.govGeorgia Department of Community Affairs, Georgia Tiny House Fact Sheet: a tiny house is typically a single-family home, generally 400 square feet or less, excluding lofts; the state's building codes generally apply only to tiny homes that are modular dwellings and site-built dwellings; tiny houses are subject to the zoning requirements of local governments, which vary widely; the residential code was amended to change the minimum habitable room size from 120 sf to 70 sf and add a tiny house appendix, which must be adopted locally to be enforced; recreational vehicles comply with ANSI A119.2 and are intended for recreational or seasonal use only; tiny homes on wheels are wheeled vehicles outside the scope of the state's building codes, typically classified as recreational vehicles or park models; a park model is 400 square feet or less, built to ANSI A119.5, and can be semi or permanently sited; siting of RVs, park models and tiny homes on wheels is regulated by local planning and zoning ordinances; residential industrialized buildings shall be affixed to a permanent load-bearing foundation; manufactured homes comply with the HUD code and are not regulated by the building codes; site-built dwellings must comply with the current IRC
dca.georgia.govGeorgia Department of Community Affairs, Industrialized Building Program: covers buildings of closed construction; manufacturers must obtain state approval for manufacturing systems and quality control procedures; inspection during manufacture by independent private engineers and construction experts; approved buildings carry a department insignia and are deemed to comply with all local ordinances and laws relating to construction; local governments retain control over installation at a site, including subdivision controls, zoning, grading, foundation installations and utility hook-ups; the program does not supersede local zoning; manufactured (mobile) homes are excluded
dca.georgia.govGeorgia General Assembly, HB 1166 (2025-2026 Regular Session): Local government; zoning decisions shall not affect or be required for certain residential dwellings of 400 square feet or fewer. Senate committee: State and Local Governmental Operations. Status as read: 03/27/2026, Senate Read Second Time
legis.ga.govGeorgia Department of Revenue, General Vehicle Registration Information FAQ: Georgia does not issue titles for homemade trailers; a serial plate is obtained with Form T-23 at the County Tag Office, attached, and certified by a Georgia law enforcement officer on Form T-22C before a license plate and registration certificate are issued
dor.georgia.govAtlanta Department of City Planning, Create more flexible ADU options (undated): detached ADUs are currently allowed in R4, R4A, R5 and several SPIs and historic districts; the proposal would increase the detached ADU size allowance from 750 sq ft to 1,000 sq ft and allow attached ADUs, and does not propose allowing ADUs in the R1-R3 districts
citydesign.atlantaga.govCity of Decatur, Accessory Dwelling Units: an ADU can be attached to the main dwelling or detached at the rear of the property; allowed in the R-50, R-60, R-85, RS-17, RM-18, RM-22, RM-43 and PO zoning districts; one ADU per primary dwelling unit; Unified Development Ordinance Section 6.8.3
decaturga.com
04 — Related questions
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