Montgomery County, Georgia requires a building permit to construct or alter a home or commercial building, with applications directed to the County Chief Tax Appraiser, who issues it only after any required septic permit is in hand1. Unincorporated Montgomery County has no county zoning ordinance, although incorporated municipalities may have their own rules2. Septic permits, for every address in the county, come from the County Health Department, which handles onsite-sewage permits under Georgia's statewide framework34.
At a glance
- Building permit
- Required for residential or commercial construction and alterations1
- Building codes
- Georgia's mandatory construction codes apply statewide5
- Zoning
- No county zoning ordinance in unincorporated areas; municipal rules may differ2
- Septic permit
- Required through the County Health Department before development or installation6
- Owner-builder
- A conditional state license exemption may apply; permits and codes still do7
- Minimum home size
- No county zoning minimum in unincorporated areas; building and health rules still apply8
- RV living
- No county zoning restriction in unincorporated areas; other rules still apply9
Who to call
Building permits
Montgomery County Tax Assessors Office
County tax assessment; ask whether this office still accepts building-permit applications
303 S. Richardson St, Mount Vernon, GA 30445
Zoning
Montgomery County Code Enforcement
County code questions; ask about permits, zoning, floodplain review, RVs and tiny homes
310 W. Broad St, Mt. Vernon, GA 30445
Septic permits
Montgomery County Health Department
Environmental Health contact for onsite sewage permits and private-well site review
218 West Broad Street, Mount Vernon, GA 30445
Roads & driveways
Montgomery County Road Department
County-road questions; ask whether a proposed county-road entrance needs approval
300 Earth Saver Drive, Ailey, GA 30410
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Montgomery County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Montgomery County, Georgia?
Montgomery County requires a building permit to construct or alter a residential or commercial building, and the county ordinance directs applications to the County Chief Tax Appraiser1. The application must give the size, type, use, location and scope of work and be signed by the owner or an authorized agent, and the county issues the building permit only after the applicant holds a County Health Department septic permit for any structure that legally needs a septic tank1. Call the Tax Assessors Office before work begins to confirm the current application, fee, plan, and inspection requirements10. Permit fees are set in the Montgomery County Schedule of Fees1. Georgia's mandatory construction codes apply to all construction even when a local government does not enforce them locally5. An owner-builder license exemption may apply when the owner builds for personal, family, firm, or employee use, personally supervises the work, and does not offer the project for sale, lease, or public use; the exemption does not waive permits, codes, or inspections7.
Who handles building permits in Montgomery County?
The Montgomery County building-permit ordinance directs applications to the County Chief Tax Appraiser1. Septic permits are a separate approval from the County Health Department, not the Tax Assessors Office4. The Tax Assessors Office is at 303 S. Richardson St in Mount Vernon and can be reached at 912-583-413110. Because the current application, fees, covered work, and inspection sequence could not be confirmed, ask that office for the complete procedure before ordering plans. Montgomery County Code Enforcement is a second contact for code and parcel questions at 310 W. Broad St in Mt. Vernon or 912-583-284011. Georgia's statewide framework allows local administration through permits and inspections, but it does not supply Montgomery County's current forms or fees1213.
Does Montgomery County, Georgia have zoning?
Unincorporated Montgomery County has no county zoning ordinance, while incorporated municipalities may have separate ordinances2. Unincorporated parcels therefore have no county zoning-based minimum dwelling size, minimum lot size, setbacks, lot-coverage limit, or building-height limit814151617. County zoning also does not restrict manufactured homes or accessory dwellings in unincorporated Montgomery County1819. Building codes, septic requirements, floodplain rules, deed restrictions, and municipal ordinances can still affect a project. Confirm that the parcel is outside a city and ask Code Enforcement about applicable non-zoning rules11.
How do septic permits work in Montgomery County?
Georgia sets the statewide onsite-sewage framework, while the Montgomery County Health Department and County Board of Health administer local permits34. Obtain a construction permit before physically developing a lot or structure that will use onsite sewage or installing any system component6. The county requires a favorable site inspection before issuing the permit, and no system may be backfilled or used until the County Board of Health completes a final inspection and gives written approval20. Privies and other alternative systems are allowed only if they meet the Department of Public Health's design criteria or are approved under its On-Site Sewage Management manual, so ask the Health Department before planning an off-grid toilet21. Call 912-583-4602 or visit 218 West Broad Street in Mount Vernon to start the process22. Only 11.5% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation an early purchase contingency23.
Can you live in an RV or tiny home in Montgomery County?
Unincorporated Montgomery County has no county zoning restriction on RV occupancy, tiny-home occupancy, or temporary camping9. That zoning answer does not eliminate building-code, septic, health, floodplain, deed, or municipal requirements. A site-built or modular tiny home remains subject to Georgia building codes, and the state's tiny-house appendix applies only where adopted locally24. County zoning does not restrict manufactured-home occupancy in unincorporated areas, but a licensed installer must obtain the state installation permit and comply with inspection requirements1825. Ask Code Enforcement which non-zoning rules apply before moving an RV or small dwelling onto a parcel11.
What are the steps to build a home in Montgomery County?
- Confirm whether the parcel is in unincorporated Montgomery County or inside a municipality; the county has no zoning ordinance, but municipal rules may differ2.
- Ask Code Enforcement about floodplain review, dwelling type, and any non-zoning location limits11.
- Obtain the County Health Department septic permit first, because the building permit is issued only after it for a structure that needs a septic tank1622.
- Build to Georgia's mandatory construction codes and complete any locally required building inspections513.
- Leave the onsite sewage system uncovered and unused until the County Board of Health completes its final inspection and issues written approval20.
What should you check before buying land in Montgomery County?
Check septic feasibility early because only 11.5% of Montgomery County soils are rated without severe limits for a conventional drain field23. A subdivision or mobile-home park using onsite sewage needs County Board of Health approval of water-supply and sewage-disposal plans before sale, lease, construction, or physical development26. Such a project must connect to public water when it is available within 1,000 feet27. For a private well, the contractor must contact the county health department in advance for site review, while a Montgomery County permit requirement could not be confirmed2822. Ask the Road Department about county-road access; work in state-highway right-of-way requires a Georgia Department of Transportation permit2930.
Watch-outs
- The current Montgomery County building-permit application, fees, covered work, and inspection sequence could not be confirmed; ask the Tax Assessors Office before starting work3110.
- No county zoning in unincorporated Montgomery County does not cancel building-code, septic, floodplain, municipal, or private deed restrictions2.
- Only 11.5% of Montgomery County soils are rated without severe limitations for a conventional septic drain field, so obtain a site evaluation before treating a standard system as feasible23.
Sources
- Code of Ordinances, Chapter 6, Sec. 6-1. Building permit required, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Onsite Sewage, quoted and re-checked
- District 5-1 / Dublin / South Central Health District, quoted and re-checked
- Construction Codes, quoted and re-checked
- Manual for On-Site Sewage Management Systems, quoted and re-checked
- Senate Bill 503, Georgia signed legislation, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Georgia law on county zoning and building authority
- Montgomery County Tax Assessors Office (montcoga.gov)
- Montgomery County Code Enforcement (montcoga.gov)
- Mandatory and Permissive State Codes (Georgia statewide rule), quoted and re-checked
- Enforcement of State Minimum Codes (Georgia statewide rule), quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Montgomery County Joint Comprehensive Plan Partial Update, quoted and re-checked
- Rules and Regulations, Chapter 511-3-1, On-Site Sewage Management Systems, quoted and re-checked
- GA DPH Onsite Sewage Manual, quoted and re-checked
- Montgomery County Health Department (montcoga.gov)
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Georgia Tiny House Fact Sheet (Georgia statewide rule), quoted and re-checked
- Manufactured Housing (Georgia statewide rule), quoted and re-checked
- GA DPH Onsite Sewage Manual, quoted and re-checked
- Rule 511-3-1 On-Site Sewage Management Systems, quoted and re-checked
- Water Well Standards (Georgia statewide rule), quoted and re-checked
- Montgomery County Road Department (montcoga.gov)
- Regulations for Driveway & Encroachment Control Manual (Georgia statewide rule), quoted and re-checked
- Code of Ordinances, Chapter 6, Sec. 6-1. Building permit required (2026 county census)
Written October 9, 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.