Building permits, zoning and septic rules across Alabama's counties

At a glance

Residential building permits

43 counties require none; 13 require them in limited cases; 11 require them.¹²³

Countywide zoning

53 counties have none; 7 have zoning; zoning remains unconfirmed elsewhere.⁴¹⁰¹¹

No building permit and no countywide zoning

42 counties meet both conditions.¹²

Septic permits

Local health departments administer the ADPH onsite sewage program; obtain a permit before installation or repair.⁵⁸

RV living

43 counties have an answer: 42 allow it, 1 limits it; 24 remain unanswered.⁶

Tiny homes

50 counties have an answer: 49 allow them, 1 limits them; 17 remain unanswered.⁷

Owner-builder

Licensing exemption for owners who personally supervise construction for their own occupancy or use, not sale.¹³

Water and wells

Private household wells generally need no state water permit; qualifying coastal high-capacity wells need ADEM approval.¹⁴¹⁵

Who to call

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Which Alabama counties don't require a building permit?

Alabama has 43 counties without residential building permits, 13 with limited building-permit requirements and 11 requiring residential building permits.¹²³ These counts concern unincorporated land; municipal building laws can apply within city limits and municipal police jurisdictions.¹⁶ Counties without residential building permits include Monroe County, Butler County, Marengo County, Lowndes County, Pike County, Washington County, Wilcox County, Clay County.¹ Browse the Alabama no-building-codes county list as a starting point, then confirm the project with the office named on the county page.

Alabama offers an owner-builder licensing exemption when the owner provides all material supervision and builds for personal occupancy or use rather than sale.¹³ The owner-builder county list helps compare locations. Beginning January 1, 2027, residential home builders must follow the applicable Alabama residential code or applicable local code, so a no-building-permit answer does not settle the construction standard.⁹

Which Alabama counties have no zoning?

Alabama has 53 counties without countywide zoning and 7 with zoning; countywide zoning remains unconfirmed in the remaining counties.⁴¹⁰¹¹ Counties without countywide zoning include Monroe County, Butler County, Marengo County, Lowndes County, Pike County, Washington County, Wilcox County, Clay County.⁴ Alabama counties lack broad general land-use regulatory authority, but local laws and special authority for flood-prone areas and airport hazards create exceptions.¹⁷

Alabama has 42 counties with neither a residential building-permit requirement nor countywide zoning.¹² Compare the no-zoning list with the no-building-codes and no-zoning list. Keep septic approval on the purchase checklist: Alabama requires a local health-department permit before installing or repairing an off-sewer onsite sewage system regardless of the county building-permit answer.⁸

Who issues septic permits in Alabama?

Alabama Department of Public Health coordinates the onsite sewage program, while local county health departments receive applications, review site and soil information, issue septic permits and arrange inspections and approvals for use.⁵ Across Alabama, 60 counties use county-level septic offices and 7 use multi-county health districts.¹⁸

For a property not connected to public sanitary sewer, obtain the local health department’s Permit to Install before installing a new system or repairing an existing system.⁸ A registered engineer must design systems where soil percolation exceeds 60 minutes or a shallow limiting zone exists.⁸ An onsite system used where municipal sewer is unavailable or impractical also needs inspection and Approval for Use before occupancy.¹⁹ Ask the parcel’s health department for the applicable septic fee and site-evaluation requirements before committing to the house location.

Can you live in an RV or tiny home on your land in Alabama?

Alabama has county-level RV answers for 43 counties: 42 allow RV living, 1 limits it and 24 counties remain unanswered.⁶ Tiny-home answers cover 50 counties: 49 allow them, 1 limits them and 17 remain unanswered.⁷ Unanswered counties are not a permission or a prohibition.⁶⁷

The counties allowing RV living include Monroe County, Butler County, Marengo County; the same counties allow tiny homes under their county-level answers.⁶⁷ Compare the RV-living list and tiny-home list. Alabama separately defines a park model as temporary recreational, camping, travel or seasonal accommodation rather than a permanent dwelling; that rule does not resolve every ordinary motor-home or travel-trailer occupancy question.²⁰ County land-use permission still leaves off-sewer sanitation subject to health-department approval.⁸ Ask the planning office to distinguish a wheeled unit, park model and foundation-built home for the parcel you are considering.

Where are the best Alabama counties for a bolthole?

The highest Bolthole Index scores belong to Monroe County, Butler County, Marengo County, Lowndes County, Pike County, Washington County, Wilcox County, Clay County, and each has no residential building-permit requirement and no countywide zoning.²¹ Monroe County scores 84, Butler County 83 and Marengo County 82 on the Index’s off-grid and homestead land scale.²¹ The listed counties use county-level septic administration except Clay County, which uses district administration; state onsite sewage requirements still apply.²¹⁵

The median county farmland value in Alabama is $3,400 per acre; Lamar County has the lowest listed farmland value at $1,910 per acre.²² Treat farmland values as comparison figures when evaluating a seller’s asking price. Alabama’s median county effective property-tax rate is 0.3%, and the median county property-tax bill is $449 annually.²³ Before choosing among these counties, ask the local health department whether the intended building site can support an approved onsite sewage system.⁸

What are Alabama’s water and private-well rules?

Alabama follows riparian reasonable-use water rights, and household wells generally do not require a state water permit or water right.¹⁴ ADEM’s coastal rule is an exception: a new or altered well extracting at least 50 gallons per minute needs a permit when the well is in the coastal area or its 50-year capture zone extends into that area.¹⁵ Ask ADEM about coastal applicability before specifying a high-capacity well.

For an off-sewer homesite, plan the well and approved wastewater system together with the site evaluator; Alabama’s onsite sewage approval depends on site and soil suitability.¹⁹ Road frontage also needs attention: access to an Alabama state highway requires an ALDOT turnout permit, and the applicant pays the turnout costs.²⁴ Ask the ALDOT District Administrator about the proposed entrance before purchasing land whose usable access depends on the state highway.²⁴

Watch-outs

• The county counts describe unincorporated land; municipal building codes can apply within city limits and, where authorized, municipal police jurisdictions.¹⁶
• Beginning January 1, 2027, residential home builders must follow the applicable Alabama residential code or applicable local residential code; ask the Home Builders Licensure Board how the requirement affects your project.⁹
• Even without a residential building permit, development in a Special Flood Hazard Area in an NFIP-participating community requires a local development permit, and off-sewer septic installation or repair requires health-department approval.²⁵⁸
• We could not confirm a statewide tiny-home occupancy or minimum dwelling-size rule; ask the county or municipal planning office about the parcel and the Home Builders Licensure Board about applicable residential codes.⁷⁹

Sources

1. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties that do not require a residential building permit in unincorporated areas
2. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties that require a residential building permit only in some cases (for example floodplain or certain structures)
3. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties that require a residential building permit in unincorporated areas
4. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties with no county-wide zoning
5. Alabama: Soil and Onsite Sewage, quoted and re-checked
6. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties' answers on living in an RV on your own land
7. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties' answers on living in a tiny home on your own land
8. Alabama: Onsite Sewage Disposal, quoted and re-checked
9. Alabama: Home Builders Licensure Law, Effective October 1, 2025, quoted and re-checked
10. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties with county zoning
11. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties whose building-permit or zoning answer we could not confirm
12. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Alabama counties with neither a residential building permit nor county-wide zoning
13. Alabama: Exemptions, quoted and re-checked
14. Alabama water rights and groundwater management: National Agricultural Law Center and Bolthole Index groundwater review
15. Alabama: Coastal Permitting Information, quoted and re-checked
16. Alabama: Home Builders Licensure Law, quoted and re-checked
17. Alabama: Alabama County Commissioners Handbook, 13th Edition, quoted and re-checked
18. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Who issues septic permits across Alabama's counties: a state agency, a multi-county health district, or the county
19. Alabama: Septic Tank Systems, quoted and re-checked
20. Alabama: Chapter 535-X-11 Regulations for Manufactured Buildings, quoted and re-checked
21. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: The 8 highest-scoring Alabama counties on the Bolthole Index (off-grid and homestead land score out of 100), with each one's building-permit, zoning and septic answers
22. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Median farmland value per acre across Alabama's counties (USDA census, the middle county's value; USD/acre), with the five least expensive counties
23. Bolthole Index county rulebook, 67 Alabama counties, as of October 9, 2026: Median of Alabama's county effective property tax rates and median county property tax bills
24. Alabama: ALDOT Permit Manual, quoted and re-checked
25. Alabama: My house is in a floodplain. What do I do if I want to build an addition or otherwise improve it?, quoted and re-checked

Written October 10, 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.