Unincorporated Marengo County, Alabama appears not to require a residential building permit, and the county enforces no building codes or zoning countywide12. Inside Demopolis, the city issues building permits and sets zoning34. Septic permits for every address in the county, city or not, come from the Marengo County Health Department56.
At a glance
- Building permit
- Not required in unincorporated Marengo County; required in Demopolis13
- County building code
- No building code is enforced countywide2
- Zoning
- No countywide zoning; Demopolis zones its own land24
- Septic permit
- Required before installing or repairing an onsite system; issued by the county health department76
- RV and tiny-home rules
- No county zoning restriction on unincorporated land8
- Owner-builder
- State licensing exemption with strict conditions9
- Farm tax break
- Current-use assessment for 5 or more acres of farm, pasture or timber10
- Short-term rentals
- State lodgings tax applies to stays under 180 days11
Who to call
Also useful
General county contact and the first call for anything not assigned to another county office, since the county lists no building or zoning department
101 E. Coats Ave., Linden, AL 36748
Septic permits
Marengo County Health Department
Septic (onsite sewage) Permit to Install applications and inspections for Marengo County
303 Industrial Drive, Linden, Alabama 36748
Contact details are copied from each office’s official page and were checked against it on October 16, 2026.
Off-grid gear
Going off-grid in Marengo 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 Marengo County, Alabama?
A residential building permit appears not to be required on unincorporated land in Marengo County1. A reviewed countywide planning source also says Marengo County enforces no building codes and has no comprehensive or zoning plans with countywide jurisdiction2. That answer stops at city limits: Demopolis requires a building permit for excavation, construction or alteration costing $1,000 or more3. Septic permits stay with the Marengo County Health Department inside Demopolis too12. Whether the county requires inspections or certificates of occupancy on rural land is unconfirmed, so ask the County Commission before you pour a foundation13.
Who handles building and land questions in Marengo County?
Marengo County does not list a building or zoning department, so start with the Marengo County Commission for questions about an unincorporated parcel13. The Commission is at 101 E. Coats Ave., Linden, AL 36748, and its phone number is (334) 295-220013. Septic is separate: contact the Marengo County Health Department at 334-295-4205 or 303 Industrial Drive, Linden, Alabama 367486. For a parcel inside Demopolis, the city's own building and zoning offices handle building permits and zoning34.
Does Marengo County have zoning?
Marengo County has no comprehensive or zoning plan with regulatory jurisdiction countywide2. On unincorporated land, county zoning therefore sets no minimum dwelling size, minimum lot size, setback, lot-coverage limit or building-height limit, and imposes no zoning restriction on accessory dwellings, RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping8. Inside Demopolis, the city's zoning ordinance and map govern all land within the corporate limits4. A Demopolis parcel needs a check with the city's Zoning Administrator, not the county4.
How do septic permits work in Marengo County?
The Alabama Department of Public Health sets the statewide rules for onsite sewage and coordinates the program through county health departments14. In Marengo County, septic requests go to the Environmental Office at the Marengo County Health Department156. Alabama law requires a permit from the local health department before a property not on public sewer installs a new system or repairs an existing one7. The Permit to Install is issued only for complete applications that meet the rules, the installer must be licensed by the Alabama Onsite Wastewater Board, and construction starts only after the permit is issued5. Where public sewer is unavailable, the soil must be tested, and many sites need an engineer-designed system16. Only about 5.6% of Marengo County soils are rated free of limits for a conventional drain field, so make septic feasibility an early purchase contingency17.
Can you live in an RV or tiny home in Marengo County?
Unincorporated Marengo County has no county zoning restriction on RV occupancy, tiny-home occupancy, manufactured-home occupancy, accessory dwellings or temporary camping8. That zoning answer does not waive the septic permit required before installing an onsite sewage system18. A manufactured home used as a residence must also satisfy Alabama's statewide manufactured-home conditions, including the HUD Seal and required utility connections19. Inside Demopolis, the city's zoning ordinance governs, so verify the parcel is outside city limits first4. Renting an RV or cabin to guests is a separate matter: see the short-term rental tax below.
Building a home in Marengo County: the steps, in order
- Verify whether the parcel is unincorporated; Demopolis requires building permits and zoning approval for land inside the city34.
- Call the Marengo County Health Department's Environmental Office about soil review and obtain the septic Permit to Install before onsite-system construction157.
- If acting as owner-builder, serve as your own contractor, supervise all material work yourself, build for your own use, and license any subcontractor whose portion costs more than $10,0009.
- For regulated land disturbance, retain a Qualified Credentialed Professional, prepare the required materials and submit a Notice of Intent through AEPACS20.
- If the driveway enters a state highway, submit a completed BM-111 application to the ALDOT District Administrator before building the turnout; ALDOT permits originate in its district offices2122.
- If the parcel is in a mapped flood hazard area, ask the community that participates in the National Flood Insurance Program for a development permit23.
What should you check before buying land in Marengo County?
Check septic feasibility first: only about 5.6% of Marengo County soils are rated free of limits for a conventional drain field17. Check access, because a driveway onto a state highway needs an ALDOT permit while other county and city roads are not covered by that rule22. Ask the Commission who handles floodplain development for a mapped parcel13. ADEM construction-stormwater coverage generally applies when disturbance reaches one acre, and the application fee is $1,38524. For taxes, owners of five acres or more used only for farming, pasture or timber may apply for a current-use assessment below market value, and applications must be filed by December 31 to count for the next tax year10. Planning short-term rentals? Alabama's lodgings tax applies to stays under 180 days at 4% of charges in Marengo County, and local lodgings taxes may be separate, so ask the County Commission and any city1113.
Watch-outs
- Demopolis requires building permits and enforces its own zoning, so do not apply the unincorporated-county answer to land inside the city34.
- The owner-builder and agricultural-building provisions are state licensing exemptions; neither one waives a local permit, code, septic or health requirement2526.
- We could not confirm whether Marengo County requires building inspections or certificates of occupancy outside city limits; ask the County Commission13.
- No Marengo County floodplain contact is confirmed; ask the County Commission who administers development permits for a parcel in a mapped flood hazard area1327.
Sources
- Marengo County, AL — Other Departments (official county site) (2026 county census)
- Marengo County, Alabama Hazard Mitigation Plan, quoted and re-checked
- Demopolis: Permits - Demopolis Building Department (Marengo County), quoted and re-checked
- Demopolis: Building Planning & Zoning (Marengo County), quoted and re-checked
- Can I Live On This Lot?, quoted and re-checked
- Marengo County Health Department (alabamapublichealth.gov)
- Can I Live On This Lot?, quoted and re-checked
- Alabama law on county zoning and building authority
- Exemptions – Home Builders Licensure Board, quoted and re-checked
- Real Property Info, quoted and re-checked
- Lodgings Tax - Alabama Department of Revenue, quoted and re-checked
- Demopolis: Sec. 12-22. - Septic tank (Marengo County), quoted and re-checked
- Marengo County Commission (marengocountyal.com)
- Soil and Onsite Sewage, quoted and re-checked
- alabamapublichealth.gov, quoted and re-checked
- Can I Live On This Lot?, quoted and re-checked
- 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
- Onsite Sewage Disposal (Alabama statewide rule), quoted and re-checked
- What is a manufactured home? (Alabama statewide rule), quoted and re-checked
- Do I Need Permit Coverage?, quoted and re-checked
- ALDOT Permit Manual, quoted and re-checked
- Access Permits - Turnout, Crossover, quoted and re-checked
- What is the role of the community in floodplain management?, quoted and re-checked
- Do I Need Permit Coverage?, quoted and re-checked
- Exemptions | Home Builders Licensure Board, quoted and re-checked
- Exemptions, quoted and re-checked
- My house is in a floodplain. What do I do if I want to build an addition or otherwise improve it? (Alabama statewide rule), quoted and re-checked
Written October 16, 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.