McDuffie County, Georgia requires construction permits for new homes and additions, with plans required for a new single-family home1. The county has zoning, and structure setbacks come from the McDuffie County Land Development Code2. County Environmental Health, within the East Central Health District, is the local septic contact3. A county-road driveway approval must come before the building permit4.
At a glance
- Building permit
- Required for new homes and additions1
- Zoning
- Yes; county and municipal regulations differ56
- Septic
- County Environmental Health is the local contact3
- Owner-builder
- Available for an owner-occupied single-family home with county registration and conditions7
- RV living
- Countywide residential and long-term occupancy rule not confirmed2
- Tiny home
- Ask Planning & Zoning about the parcel; no countywide occupancy rule was confirmed2
- Manufactured home
- Double-wides need a mobile-home and moving permit; single-wides are limited to approved parks8
- Property tax
- About 0.8% effective rate and $1,317 median annual bill910
Who to call
Building permits
McDuffie County Planning Commission / Planning & Zoning
Building permits, zoning, plan review and inspection requests in McDuffie County
210 RAILROAD STREET, P.O. BOX 7, THOMSON, GEORGIA 30824
Roads & driveways
County-road driveway applications and permits
504 Railroad Street, Thomson, GA 30824
Septic permits
McDuffie County Health Department / Environmental Health
Local Environmental Health contact for onsite sewage and septic questions in McDuffie County
P.O. Box 266, 307 Greenway Street, Thomson, GA 30824
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 McDuffie County, Georgia?
Yes. McDuffie County requires construction permits for a new home or an addition, and plans for a new single-family home must be submitted before the county can issue the permit1. Those plans cover grade elevations, exterior materials, foundation, floor layout, framing, electrical, roof and plumbing details1. Georgia's mandatory construction codes apply statewide, while McDuffie County publishes its locally adopted code editions1112. New houses also receive staged inspections, including a footer or slab inspection before concrete and a rough-in inspection before insulation or sheetrock13. Accessory structures such as pole barns, decks, patios, stick-built storage buildings and garages also require county permits14.
Who is the McDuffie County building department, and how do you reach it?
McDuffie County Planning Commission / Planning & Zoning is the permit-office contact at 210 Railroad Street, Thomson, with a mailing address of PO Box 7, Thomson, Georgia 3082415. Call the office at (706) 595-5355 to discuss a building application or request inspections15. A complete property plat must show the entire property, the surveyor's information and stamp, and the survey date before the application can be accepted15. After issuance, the building permit must remain posted where it is visible from the road or highway15. Published fees vary by the type of permit or review; the schedule includes a $25 residential certificate-of-occupancy fee and a $75 clearing-and-grading fee16.
Does McDuffie County have zoning?
Yes. The McDuffie County Board of Commissioners adopted a Land Development Code that includes zoning5. The applicable rules depend on jurisdiction: McDuffie County, the City of Thomson and the Town of Dearing have separate zoning maps, and municipal regulations can differ from county regulations176. For land outside a municipality, ask Planning & Zoning to identify the county district and confirm permitted uses, setbacks, lot standards and building height before relying on a listing description215. Construction in a designated floodplain must also meet McDuffie County and FEMA damage-mitigation requirements18. If you plan to divide land, county subdivision regulations govern residential, commercial and industrial subdivision development19.
How do septic permits work in McDuffie County?
McDuffie County Environmental Health, within Georgia's East Central Health District, is the local contact for onsite sewage and septic work3. Call the McDuffie County Health Department at (706) 595-1740 or visit 307 Greenway Street in Thomson20. Georgia requires a Board of Health permit before constructing, repairing, replacing or adding to an onsite sewage system, and the site must first be found suitable21. The system needs a final inspection and written approval before backfilling or use22. About 75.7% of county soils are rated without severe limitations for a conventional septic drain field, but parcel conditions still require evaluation23. If public or community sewer is available within 200 feet of the property line or in an abutting public right-of-way, Georgia requires connection24.
Can you live in an RV or tiny home on land in McDuffie County?
McDuffie County's countywide rule for residential or long-term RV occupancy could not be confirmed, so ask Planning & Zoning at (706) 595-5355 before using an RV as a residence or temporary dwelling15. The countywide rule for tiny-home occupancy and any minimum dwelling size also could not be confirmed; the parcel's zoning district and Georgia construction codes still need review225. A site-built or modular tiny home used as a single-family dwelling is subject to Georgia's standard dwelling-code framework and local siting controls25. McDuffie County expressly treats manufactured homes differently: a double-wide needs a mobile-home and moving permit before placement anywhere in the county, while a single-wide may be permitted only in an approved mobile-home park8.
How do you build a home in McDuffie County, step by step?
- Confirm the parcel's jurisdiction, zoning district, setbacks and floodplain status with Planning & Zoning1718.
- For access from a county road, submit the driveway application to McDuffie County Public Works; county approval must precede the building permit264.
- Arrange the water and sewage path with Environmental Health or the appropriate utility because those services need release before permanent power27.
- Apply with a complete property plat and the required house plans, then post the issued permit where it is visible from the road115.
- Call Planning & Zoning for required inspections, including the staged building inspections and final approval1513.
An owner building a single-family residence for personal and family occupancy may register as a self-contractor, but must personally supervise the work and follow all codes and zoning rules7.
What should you check before buying land in McDuffie County?
Start with the zoning map and the parcel's jurisdiction because county, Thomson and Dearing regulations differ617. Ask Environmental Health for a site evaluation before closing if the property needs septic; countywide soil statistics cannot establish whether one lot will support a conventional field2320. Verify legal road access and obtain the appropriate driveway approval; work in a Georgia state-highway right-of-way requires a state permit, while county-road access goes through Public Works2826. About 92% of county land has a slope of 15% or less, but a survey and site plan still control the buildable area29. The median property-tax bill is about $1,317 a year, with an effective rate near 0.8%109.
Watch-outs
- A county-road driveway permit must be approved before McDuffie County can issue the building permit4.
- Water and sewage services must be installed and released by the Health Department or county inspector before permanent electrical power is released27.
- McDuffie County, Thomson and Dearing use different zoning regulations, so confirm the parcel's jurisdiction before applying a rule6.
- Private-well permitting, long-term RV occupancy and the countywide minimum dwelling size remain unconfirmed; ask Environmental Health about the well and Planning & Zoning about occupancy and size2015.
Sources
- Building Permits, quoted and re-checked
- Building Permits (2026 county census)
- East Central Health District - McDuffie County Health Department (2026 county census)
- Building Permit Procedures, quoted and re-checked
- Building Permits, quoted and re-checked
- Planning Commission Board, quoted and re-checked
- Residential Self-Contractor Disclosure, quoted and re-checked
- Building Permits, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Mandatory and Permissive State Codes (Georgia statewide rule), quoted and re-checked
- Adopted Codes, quoted and re-checked
- Building Inspections, quoted and re-checked
- Building Permits (2026 county census)
- McDuffie County Planning Commission / Planning & Zoning (thomson-mcduffie.gov)
- McDuffie County Fee Schedule, quoted and re-checked
- Community Development, quoted and re-checked
- Community Development, quoted and re-checked
- Community Development, quoted and re-checked
- McDuffie County Health Department / Environmental Health (ada.ecphd.com)
- Manual for On-Site Sewage Management Systems (Georgia statewide rule), quoted and re-checked
- Manual for On-Site Sewage Management Systems (Georgia statewide rule), 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
- Georgia Tiny House Fact Sheet (Georgia statewide rule), quoted and re-checked
- McDuffie County Public Works (thomson-mcduffie.gov)
- Building Permit Procedures, quoted and re-checked
- Regulations for Driveway & Encroachment Control Manual (Georgia statewide rule), quoted and re-checked
- Share of land at 15% slope or less: 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.