Unincorporated Washington County, Georgia requires a development permit for residential and commercial construction, remodels, mobile homes, certain outbuildings, and other listed development1. The county does not have zoning regulations in its unincorporated areas, but building rules still apply around flood-prone land and waterways2. Septic permits are issued separately by the Washington County Board of Health3.
At a glance
- Building permit
- Required for listed development in unincorporated areas1
- Zoning
- No county zoning regulations in unincorporated areas2
- Septic permit
- Required through the Washington County Board of Health34
- RV living
- No county zoning restriction in unincorporated areas, but development, septic, floodplain and health rules still apply5
- Tiny home
- No county zoning restriction in unincorporated areas, but dwelling codes, permits, septic and floodplain rules still apply67
- Owner-builder
- Georgia waives the contractor-license requirement for your own home, not local permits or codes8
- Minimum home size
- No county zoning minimum in unincorporated areas; other building and health rules remain9
- Private well
- Apply to Environmental Health before installing a non-public water well10
Who to call
Building permits
Washington County Board of Assessors
Development permits, E-911 addresses, county driveway permits and mobile-home transport permits
121 Jones Street, Sandersville, GA 31082
Septic permits
Washington County Environmental Health Department
Environmental Health, septic systems and non-public water-well permit applications
201 Morningside Drive, Sandersville, GA 31082
Roads & driveways
Washington County Road Department
Road concerns and site inspection for driveway permits
1862 Kaolin Road, Sandersville, GA 31082
Contact details are copied from each office’s official page and were checked against it on September 27, 2026.
Do you need a building permit in Washington County, Georgia?
Yes, for the projects named in Washington County's procedure. Unincorporated Washington County requires a development permit for residential or commercial construction, remodels, new or used mobile homes, new RV or mobile-home parks, private-road subdivisions, new or rebuilt driveways, and new outbuildings larger than 400 square feet1. A valid E-911 address and a preconstruction site visit are part of the development-permit process1. Starting development without approval can lead to a citation and fine1. Georgia's mandatory construction codes still apply statewide even where a local government does not enforce every code itself11.
Who handles Washington County building permits?
The Washington County Board of Assessors is the practical permit counter for development permits, E-911 addresses, county driveway permits, and mobile-home transport permits12. Call 478-552-2937, email [email protected], or visit 121 Jones Street in Sandersville12. The county's published sequence makes the E-911 address the first step and the development permit the second step13. Washington County typically requires one or more site visits during development-permit review13. Used mobile homes follow an additional inspection path: a certified home inspector, licensed contractor, or municipal building inspector must inspect the home, because the county relies on that third-party inspection14.
Does Washington County, Georgia have zoning?
Unincorporated Washington County has no county zoning regulations2. That means the county does not impose zoning minimums for dwelling size, lot size, setbacks, lot coverage, or building height in its unincorporated area915161718. It does not mean a parcel is free of development rules: building regulations still apply in flood-prone areas, flood zones, and around streams, creeks, rivers, and other bodies of water2. Municipal land is a different jurisdiction, and the county's no-zoning statement applies only to unincorporated land2.
How do septic permits work in Washington County?
The Washington County Board of Health issues septic permits under Georgia regulations3. Contact Washington County Environmental Health at (478) 552-3210 or visit 201 Morningside Drive in Sandersville10. A septic construction permit is required before physically developing a site or installing an onsite system for a structure intended for people to occupy4. The county's sequence places septic after the E-911 address and development permit13. Only 37.9% of county soils are rated without severe limitations for a conventional drain field, so make the health department's site evaluation an early contingency in a land purchase19. Georgia also requires connection to public or community sewer when it is available within 200 feet of the property line or in an abutting public right-of-way20.
Can you live in an RV or tiny home in Washington County?
Unincorporated Washington County does not impose a county zoning restriction on RV occupancy or temporary camping, but development permits, septic, floodplain, and health rules still apply521. A new RV park requires a county development permit1. Tiny-home occupancy likewise has no county zoning restriction in the unincorporated area, but permits, building regulations, septic, and floodplain requirements remain6. Georgia treats a site-built or modular tiny home as a dwelling subject to the applicable building codes7. Manufactured homes have separate state installation-permit requirements, and used homes also face Washington County's third-party inspection process2214.
Building a home in Washington County: the steps, in order
- Confirm that the parcel is outside a municipality and ask the Board of Assessors about flood, waterway, and site constraints before finalizing the layout212.
- Obtain the required E-911 address, then apply for the Washington County development permit before construction starts13.
- Ask Environmental Health to evaluate septic and well plans; the septic permit follows the address and development permit, while a non-public well requires an Environmental Health application before installation1310.
- Apply for the county driveway permit if access is new or rebuilt, and let county personnel determine any needed pipe dimensions during the site visit23.
What should you check before buying Washington County land?
Start with legal access: new or rebuilt driveways and county right-of-way encroachments require a county permit and site visit23. For a driveway on a state highway, Georgia requires a separate permit before construction or non-routine maintenance within the state right-of-way25. Check flood and waterway constraints even though unincorporated Washington County has no zoning2. Septic suitability deserves special attention because only 37.9% of county soils avoid a severe conventional-drain-field limitation19. The county is 75% wooded and all mapped land is at a slope of 15% or less, so clearing and soils may matter more than steep grading2627. The effective property-tax rate is about 1.1%, with a median annual bill of $1,2682829.
Watch-outs
- The no-zoning rule applies only to unincorporated Washington County; ask the relevant city about a parcel inside municipal limits2.
- Washington County's owner-builder route does not waive development permits or codes; Georgia's exemption concerns only the state contractor-license requirement8.
- Washington County's certificate-of-occupancy requirement could not be confirmed; ask the Board of Assessors what final approvals apply to the specific project12.
- Private-well permitting is handled by Washington County Environmental Health, which says to apply before installing a non-public well10.
Sources
- Information Sheet for Washington County Permits, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Application Procedures & Rules, quoted and re-checked
- Application Procedures & Rules, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Georgia Tiny House Fact Sheet (Georgia statewide rule), quoted and re-checked
- Residential and Commercial General Contractors Frequently Asked Questions (Georgia statewide rule), quoted and re-checked
- Standard Zoning, quoted and re-checked
- Washington County Environmental Health Department (northcentralhealthdistrict.org)
- Mandatory and Permissive State Codes (Georgia statewide rule), quoted and re-checked
- Washington County Board of Assessors (washingtoncountyga.gov)
- Information Sheet for Washington County Permits, quoted and re-checked
- Information Sheet for Washington County Permits, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Standard Zoning, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- GA DPH Onsite Sewage Manual (Georgia statewide rule), quoted and re-checked
- Standard Zoning, quoted and re-checked
- Manufactured Housing (Georgia statewide rule), quoted and re-checked
- Information Sheet for Washington County Permits, quoted and re-checked
- Enforcement of State Minimum Codes (Georgia statewide rule), quoted and re-checked
- Regulations for Driveway & Encroachment Control Manual (Georgia statewide rule), quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 27, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.