Bolthole Index

Mobile County, Alabama

Building permits, zoning and land rules in Mobile County, Alabama

71Index Score / 100
#41 of 67 in Alabama

Unincorporated Mobile County, Alabama requires building permits and inspections from Mobile County Inspection Services for work covered by its adopted codes or Flood Damage Prevention Ordinance12. The county has no zoning in unincorporated areas, so the county sets no setback, lot-size or RV rule there34. Cities such as Chickasaw and Creola run their own building permits and zoning inside city limits56, but septic permits come from the Mobile County Health Department7.

At a glance

Building permit
Required for covered construction, demolition, alteration and repair in unincorporated Mobile County8
Building codes
The 2024 code family took effect July 1, 20269
Zoning
No zoning in unincorporated Mobile County; subdivision, building-code, floodplain, septic and right-of-way rules still apply101112
Septic permit
Required through the Mobile County Health Department, even inside city limits; residential application and inspection fee is $2001314
Setbacks, lot size, minimum home size
No county rule in unincorporated areas because the county has no zoning4
Tiny home
No county zoning rule on tiny homes; a permanent structure still needs a building permit48
Owner-builder
Allowed for a primary residence if the Building Official deems the owner competent; the home cannot be offered for sale for one year after completion, and subcontractors above $10,000 must be licensed151617
RV living
No county zoning rule restricts RV living in unincorporated areas; Alabama treats a park model as temporary quarters, and septic rules apply418
Utilities and occupancy
Permanent electrical and water service requires a Certificate of Occupancy or Completion; temporary authorization lasts 90 days1920
County right-of-way
Driveway, utility and drainage work requires a Right of Way Encroachment Permit21

Who to call

Building permits

Mobile County Inspection Services

Regulates construction, demolition, alteration and repair of structures in unincorporated Mobile County, including plan review, permitting and inspection under the adopted building codes and flood damage prevention ordinance, and issues Right of Way Encroachment Permits for driveways and utility work

251-574-3507

inspections@mobilecountyal.gov

1110 Schillinger Road N., Mobile, Alabama 36608

Online permits →

Zoning

Mobile County Development and Zoning

Confirms zoning status by parcel, administers commercial site plan review as the county's land-disturbance permit, and maps municipal extraterritorial jurisdictions where a city, not the county, handles permitting

251-574-8595

development@mobilecountyal.gov

Mobile Government Plaza, 205 Government Street, Mobile, Alabama 36644-1600

Septic permits

Mobile County Health Department, Onsite Sewage Division

Permits, inspects and regulates septic (onsite sewage) systems in unincorporated Mobile County under ADPH's statewide Onsite Sewage Treatment and Disposal Rules

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 Mobile County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Mobile County, Alabama?

Yes. Unlike most counties around it in Alabama, Mobile County requires a county building permit22. Almost any residential or commercial work needs one; the county lists painting, redecorating, new countertops or cabinetry, light-fixture swaps and fences seven feet or shorter as exceptions23. Unincorporated Mobile County requires a permit for construction, demolition, alteration and repair covered by its adopted building codes or Flood Damage Prevention Ordinance; limited exceptions include specified small detached accessory structures and certain private-property sidewalks and driveways1. The property owner, installer and contractor share responsibility for making sure a valid permit exists1. Inspection Services also inspects that work, including building sewer piping before backfill and water service piping before backfill2. The county adopted the 2024 building, residential, mechanical, plumbing, fuel-gas, swimming-pool and existing-building codes, along with the 2023 electrical code, effective July 1, 20269. Permanent electrical and water service follows a Certificate of Occupancy or Certificate of Completion; temporary authorization lasts 90 days19. Alabama's agricultural-building licensing exemption does not settle the county question: a barn is a state builder-licensing matter, while the county permit rule above is separate, and a residence inside an agricultural building is not exempt from state licensing24.

Who is the Mobile County building department, and how do you reach it?

Mobile County Inspection Services handles plan review, building permits and inspections for covered work in unincorporated Mobile County25. The office is at 1110 Schillinger Road N., Mobile, Alabama 36608; call 251-574-3507 or email inspections@mobilecountyal.gov25. Commercial development has two county phases: Commercial Site Plan Review serves as the land-disturbance permit, then Inspection Services reviews code compliance and issues building permits26. Inside city limits the city, not the county, may run permitting: Chickasaw issues its own building-trade permits, such as electrical permits, and Creola requires its own building permits56. Development and Zoning can tell you which jurisdiction handles a parcel; its office is at Mobile Government Plaza, 205 Government Street, Mobile, Alabama 36644-1600, and its phone is 251-574-859527. Septic permits stay with the Mobile County Health Department either way13. The county's current permit fee schedule took effect July 1, 2026 and is on the Inspection Services Downloads page28.

Does Mobile County have zoning?

Unincorporated Mobile County has no zoning ordinance, because the county does not have zoning power329. As a result, no county rule sets a minimum home size, minimum lot size, setback, lot-coverage or height limit, or restricts accessory dwellings, RVs, tiny homes, manufactured homes or temporary camping on unincorporated land4. Other controls still apply: Mobile County regulates subdivisions, construction under its adopted codes, flood-hazard development, onsite sewage and work in county rights-of-way11930721. Cities zone only inside their own limits: Mobile31, Chickasaw32, Citronelle33 and Creola34 each publish their own zoning, and the county's other municipalities have adopted zoning too, with the exception of Semmes29. Subdivisions outside a municipal planning jurisdiction go through county staff review, notice to adjacent owners and utilities, County Commission approval and the County Engineer's signature11. Ask Development and Zoning to identify the controlling jurisdiction for a parcel27.

How do septic permits work in Mobile County?

The Mobile County Health Department's Onsite Sewage division regulates permits, installation and inspection for residential and commercial onsite systems, following the Alabama Department of Public Health's onsite sewage rules713. That holds for every address in the county, city or not: the Health Department issues septic permits in Mobile, Chickasaw, Creola and Citronelle too353637. The published residential application and inspection fee is $200, while the commercial fee is $27014. State law requires property not connected to public sanitary sewer to obtain a local health-department Permit to Install before installing or repairing an onsite system38. Inspection and Approval for Use are required before occupancy39. Mobile County allows an individual sewage disposal system only when public sewer is unavailable40. The only recurring inspection the county page states is the annual pump-truck inspection for septic haulers; it does not set an interval for installed home systems41. About 26.4% of county soils are rated not limited for a conventional drain field, so most parcels need a site and soil evaluation and some need an engineered system42.

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

In unincorporated Mobile County, no county zoning rule restricts RV living, tiny homes, accessory dwellings or temporary camping, because the county has no zoning ordinance4. That is a zoning answer only: any permanent structure, including a tiny home built or installed as a dwelling, needs a building permit and inspections when it falls within the adopted codes12. Any home with plumbing also needs a Mobile County Health Department septic permit where public sewer is unavailable40. Permanent electrical and water service follows a Certificate of Occupancy or Completion19. Alabama treats a park model as temporary living quarters for recreational, camping, travel or seasonal use rather than a permanent dwelling18. A qualifying manufactured home may be used as a residence when it bears a HUD Seal and connects to required utilities43. Inside a city such as Mobile, Chickasaw, Citronelle or Creola, city zoning applies instead, so check with the city first31323334.

Building a home in Mobile County: the steps, in order

  1. Ask Development and Zoning whether the parcel is under county or municipal permitting jurisdiction27.
  2. If creating or changing lots, complete the applicable subdivision review; no utilities or county services are extended to a subdivision until it has final county approval4445.
  3. Apply to Inspection Services for the building permit and plan review required for covered work125.
  4. An owner-builder must satisfy state-law eligibility and the Building Official's competency determination, and must give the Building Official a list of subcontractors and contract costs within 15 days after permit issuance15; trade permits require a score of at least 70 on the applicable county competency test16. State law adds that subcontractors must be licensed when their portion costs more than $10,00017.
  5. If public sewer is unavailable, obtain the septic Permit to Install from the Mobile County Health Department before construction4038.
  6. Obtain a Right of Way Encroachment Permit for driveway, utility or drainage work in a county right-of-way21.
  7. Complete required inspections and obtain the occupancy or completion approval needed for permanent electrical and water service219.

What should you check before buying land in Mobile County?

Check flood exposure early because Mobile County applies its Flood Damage Prevention Ordinance in flood-hazard areas, and a small accessory structure loses its cited permit exception when placed in a Special Flood Hazard Area1230. Verify road access too: driveway work within a Mobile County right-of-way requires a Right of Way Encroachment Permit21. For water, we could not confirm a general Mobile County permit rule for an individual private well; an ADEM permit applies to a new or altered coastal-area groundwater well extracting at least 50 gallons per minute46. Septic suitability varies by parcel, with about 26.4% of county soils rated not limited for a conventional drain field42. Mobile County's effective property-tax rate is about 0.5%, and the median annual bill is about $8494748.

Watch-outs

  • No zoning does not mean no land-development rules: subdivision, floodplain, building-code, septic and right-of-way controls can still shape a project in unincorporated Mobile County311309721.
  • A permanent electrical or water connection is approved only for a building that was legally permitted, inspected and approved, and that meets the building code, the flood ordinance and Health Department requirements; a temporary connection authorization lasts 90 days1920.
  • An owner-builder's home cannot be offered for sale for one year after completion15.
  • The only well permit we could confirm is the state one for coastal high-capacity groundwater wells46; for a private well or a short-term rental, ask the Mobile County Health Department and Inspection Services before relying on a rule.

Sources

  1. Inspection Services, quoted and re-checked
  2. Inspection Services, quoted and re-checked
  3. Development and Zoning, quoted and re-checked
  4. Alabama law on county zoning and building authority
  5. Chickasaw: Code of Ordinances, § 6-91, Permit required; failure to obtain permit (Mobile County), quoted and re-checked
  6. Town of Creola: Code of Ordinances, § 38-321, Permits and certificates (Mobile County), quoted and re-checked
  7. Environmental Health - Onsite Services, quoted and re-checked
  8. Inspection Services, quoted and re-checked
  9. Adopted Codes, quoted and re-checked
  10. Development and Zoning, quoted and re-checked
  11. Subdivisions, quoted and re-checked
  12. Mobile County Building Code Amendments, quoted and re-checked
  13. Environmental Health - Onsite Services, quoted and re-checked
  14. Environmental Health, quoted and re-checked
  15. Mobile County Building Code Adoption and Amendments, quoted and re-checked
  16. Mobile County Building Code Amendments, quoted and re-checked
  17. Exemptions, quoted and re-checked
  18. Chapter 535-X-11 Regulations for Manufactured Buildings (Alabama statewide rule), quoted and re-checked
  19. Mobile County Building Code Amendments, quoted and re-checked
  20. Mobile County Building Code Adoption and Amendments, quoted and re-checked
  21. Inspection Services, quoted and re-checked
  22. Permits (2026 county census)
  23. Permits, quoted and re-checked
  24. Home Builders Licensure Law, quoted and re-checked
  25. Mobile County Inspection Services (mobilecountyal.gov)
  26. Development and Zoning, quoted and re-checked
  27. Mobile County Development and Zoning (mobilecountyal.gov)
  28. Permits, quoted and re-checked
  29. Development and Zoning, quoted and re-checked
  30. Inspection Services, quoted and re-checked
  31. Mobile: City of Mobile Unified Development Code (Mobile County), quoted and re-checked
  32. Chickasaw: Code of Ordinances, § 44-72, Single-Family Residential District (R-1) (Mobile County), quoted and re-checked
  33. Citronelle: Appendix A Zoning, Sec. 2.2 Residential districts (Mobile County), quoted and re-checked
  34. Town of Creola: Code of Ordinances, § 38-57, Lot area, width, coverage, density and other factors (Mobile County), quoted and re-checked
  35. Mobile: official source (Mobile County), quoted and re-checked
  36. Town of Creola: Code of Ordinances, § 36-2, Septic tanks (Mobile County), quoted and re-checked
  37. Citronelle: Mobile County Health Department Environmental Health (Mobile County), quoted and re-checked
  38. Onsite Sewage Disposal (Alabama statewide rule), quoted and re-checked
  39. Septic Tank Systems (Alabama statewide rule), quoted and re-checked
  40. Mobile County Building Code Adoption and Amendments, quoted and re-checked
  41. Environmental Health, quoted and re-checked
  42. 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
  43. What is a manufactured home? (Alabama statewide rule), quoted and re-checked
  44. 2023 Subdivision Regulations Mobile County, quoted and re-checked
  45. Subdivisions, quoted and re-checked
  46. Coastal Permitting Information (Alabama statewide rule), quoted and re-checked
  47. Effective property tax rate: Bolthole Index county data
  48. Median property tax bill: Bolthole Index county data

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.

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Compared with neighboring counties

Unlike 5 of its 6 neighbors, Mobile County requires a building permit for a home.

RuleMobile CountyBaldwin CountyWashington CountyClarke CountyEscambia CountyMonroe CountyChoctaw County
Building permitRequiredRequiredNot requiredNot requiredNot requiredNot requiredNot required
County zoningNoYesNoNoNoNoNo
Septic permitsCounty Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.

County locator

Mobile County in Alabama

71
County map
Mobile County highlighted among the Alabama counties · colored by Index score

How Mobile County scores

Seclusion61100% ev.
Self-Sufficiency68100% ev.
Admin Boringness65100% ev.
Durability53100% ev.
Property Autonomy39100% ev.
Carry Cost84100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$199kTypical home
0.5%Property tax
$4,768Land / acre
64.5"Annual rain
7.3% of yrsSevere drought
5.5 / yr (+5.1)Mid-century 100°F days
16.3 daysMid-century dry spell
3.86" (+5%)Mid-century 1-day rain
1.28×Wildfire change factor
100%Forward climate coverage
$2,097Home insurance / yr
-0.2% / yrInsurance growth
0.91%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
8,394People within 30 min
1,630,120People within 2 hr
131,108Radius comparison (15 mi)
334.8People / sq mi
0.5%Federal land
95.5%Land at 15% slope or less
26.4%Soils rated "not limited" for septic (strict USDA rating)
198,701 acWorkable land screen
72.9%Wooded land
37.7 tonsBiomass / forest ac
67.2°FAvg temp

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Cities and towns in Mobile County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Bayou La Batre · Town of Dauphin Island · Town of Mount Vernon · Prichard · Satsuma

Answers from the rulebook for Mobile County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Mobile County rules

  • Building permitRequired

    Residential and commercial work in Mobile County, particularly work regulated by Mobile County Inspection Services.

    • Notable exceptions include painting, redecorating, changing countertops, installing new cabinetry, replacing light fixtures or ceiling fans, and replacing equipment requiring no rewiring.
    • Erecting a fence seven feet or less in height is also listed as an exception.
    • Municipal permitting jurisdictions may handle their own permitting.
    “Almost any work done in Mobile County, whether residential or commercial, requires a permit. Notable exceptions include, but may not be limited to:”
    2 more reviewed findings on this topic
    • Required — Construction, demolition, alteration, and repair of structures subject to adopted building codes or the Flood Damage Prevention Ordinance.
      “The property owner, installer, and contractor are mutually responsible for obtaining a building permit. Each has the duty to verify that a valid permit exists for the proposed work.”
    • Required — Construction, demolition, alteration, and repair of structures subject to adopted codes in unincorporated Mobile County.
      “responsible for obtaining a building permit.”
  • Owner-builder exemptionConditional

    Owner-performed electrical, plumbing, heating/cooling, and certain building work in unincorporated Mobile County.

    • Owner eligibility is subject to State law and the Building Official deeming the owner competent.
    • Electrical, plumbing, and heating/cooling permits require a passing score of 70 or higher on the applicable Mobile County competency test.
    • Owners may not apply for permits to connect to public sewer.
    • Other permit applicants need a valid County Business License and Contractor's License under State law.

    competency test passing score: >= 70 score

    “the Building Official deems the property owner competent”
    One more reviewed finding on this topic
    • Conditional — A property owner seeking a permit for work on the owner’s primary residential structure or a newly built primary residence.
      “Exception: A property owner may make repairs/improvements to a residential structure used as his/her primary residence, or any other structure owned by him/her, provided that the structure is not offered for sale for a period of 1 year from completion of the repairs/improvements. A property owner may build a new residential structure for use as his/her primary residence, provided that the structure is not offered for sale for a period of 1 year of completion.”
  • Building code adoptedAdopted (with conditions)

    Construction subject to the Mobile County Building Code in unincorporated Mobile County.

    • Commercial and residential energy codes are those adopted by the Alabama Energy and Residential Codes Board.
    • The document states an effective time of 5:00 p.m. on September 30, 2016.

    effective time: 5:00 p.m., September 30, 2016 · adopted codes: 2012 IBC, IRC, IMC, IPC, IFGC, IEBC; 2011 NEC

    “Mobile County Building Code Adoption and Amendments Effective 5:00 p.m., September 30, 2016 Part A - Adopted Codes 2012 International Building Code (IBC) 2012 International Residential Code (IRC) 2012 International Mechanical Code (IMC) 2012 International Plumbing Code (IPC) 2012 International Fuel Gas Code (IFGC) 2012 International Existing Building Code (IEBC) 2011 National Electric Code (NEC - also known as NFPA 70)”
    One more reviewed finding on this topic
    • Adopted (with conditions) — Current Mobile County building codes in unincorporated Mobile County.
      “Our Current Building Codes were adopted by resolution of the County Commission , which became effective July 1, 2026.”
  • InspectionsRequired

    Construction, demolition, alteration, and repair of structures subject to the adopted Building Codes and Flood Damage Prevention Ordinance in unincorporated Mobile County.

    • Inspection Services also performs plan review and permitting.
    • Municipal jurisdictions may administer their own permitting and inspection processes.
    “The Inspection Services Department's function is to regulate the construction, demolition, alteration, and repair of structures in unincorporated Mobile County. This includes plan review, permitting, and inspection of all work that is subject to the adopted Building Codes and Flood Damage Prevention Ordinance in order to protect the lives and property of the citizens of Mobile County and to promote resiliency in the wake of disasters.”
    2 more reviewed findings on this topic
    • Required — Work subject to the adopted Building Codes and Flood Damage Prevention Ordinance in unincorporated Mobile County.
      “inspection of all work that is subject to the adopted Building Codes”
    • Required — Work subject to adopted Building Codes and the Flood Damage Prevention Ordinance in unincorporated Mobile County.
      “This includes plan review, permitting, and inspection of all work that is subject to the adopted Building Codes and Flood Damage Prevention Ordinance in order to protect the lives and property of the citizens of Mobile County and to promote resiliency in the wake of disasters.”
  • Certificate of occupancyLimited

    Permanent electrical and water service connections for buildings in unincorporated Mobile County.

    • Permanent connection is authorized upon issuance of a Certificate of Occupancy or Certificate of Completion by the Building Official.
    • Temporary connection authorization is valid for 90 days.
    • Electrical and water service also require code, flood ordinance, Health Department, permitting, inspection, and approval compliance.

    temporary connection authorization: 90 days

    “upon issuance of a Certificate of Occupancy or Certificate of Completion”
    One more reviewed finding on this topic
  • County-wide zoningAbsent

    County zoning in unincorporated Mobile County.

    • Municipalities may exercise permitting authority within their respective jurisdictions.
    “There is no zoning in the unincorporated areas of Mobile County.”
    One more reviewed finding on this topic
    • Absent — Zoning in unincorporated Mobile County.
      “There is no zoning in the unincorporated areas of Mobile County.”
  • Local zoningVaries (with conditions)

    Countywide aggregate of zoning jurisdiction in Mobile County, including unincorporated areas and incorporated municipalities.

    • There is no zoning in the unincorporated areas of Mobile County.
    • Mobile County does not have zoning power.
    • Municipalities within the county have adopted local zoning ordinances, with the exception of Semmes.
    • Semmes and Mobile County have adopted subdivision regulations and require building permits in conformity with adopted codes.
    • Several local municipalities exercise permitting authority within their respective permitting jurisdictions.
    “While Mobile County does not develop a comprehensive plan or having zoning power, municipalities within the county have adopted local zoning ordinances, with the exception of Semmes, which (along with Mobile County) has adopted subdivision regulations and requires building permits in conformity with adopted codes.”
  • Zoning districts · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Minimum dwelling size · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Minimum lot size · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Setbacks · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Lot coverage · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Building height · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Living in an RV · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Camping on your land · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Tiny homes · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Manufactured homes · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Accessory dwellings · by state lawNo county rule

    Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • Alabama counties lack broad, general land-use regulatory authority under general Alabama law.
    • Limited authority may arise through county-specific local laws, including examples identified by the handbook for Baldwin, Russell, Shelby, and Jefferson Counties.
    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
  • Who permits septicMixed (with conditions)

    Residential and commercial onsite sewage disposal systems in Mobile County.

    • The Mobile County Health Department regulates permitting, installation, and inspection while following ADPH Onsite Sewage Treatment and Disposal Rules.
    • Persons involved in the onsite sewage disposal industry must be licensed by the Alabama Onsite Wastewater Board.
    “Following the ADPH Onsite Sewage Treatment and Disposal Rules , the Mobile County Health Department’s Onsite Sewage division regulates the permitting, installations and inspections of onsite sewage disposal systems (septic tanks) for Mobile County, both residential and commercial.”
    2 more reviewed findings on this topic
    • Local (with conditions) — Residential and commercial onsite sewage disposal systems in Mobile County.
      “Onsite Sewage division regulates the permitting”
    • Mixed (with conditions) — Onsite sewage disposal systems in Mobile County.
      “Following the ADPH Onsite Sewage Treatment and Disposal Rules”
  • Septic permitRequired

    Residential and commercial onsite sewage disposal systems in Mobile County.

    • Permitting is administered by the Mobile County Health Department's Onsite Sewage division.
    • The division follows ADPH Onsite Sewage Treatment and Disposal Rules.
    • Commercial and residential systems are both covered.
    “Following the ADPH Onsite Sewage Treatment and Disposal Rules , the Mobile County Health Department’s Onsite Sewage division regulates the permitting, installations and inspections of onsite sewage disposal systems (septic tanks) for Mobile County, both residential and commercial.”
    2 more reviewed findings on this topic
    • Required — Residential and commercial onsite sewage disposal systems in Mobile County.
      “permitting, installations and inspections of onsite sewage disposal systems”
    • Required — Residential and commercial onsite sewage disposal systems in Mobile County.
      “Following the ADPH Onsite Sewage Treatment and Disposal Rules, the Mobile County Health Department’s Onsite Sewage division regulates the permitting, installations and inspections of onsite sewage disposal systems (septic tanks) for Mobile County, both residential and commercial.”
  • Septic inspectionRequired

    Installation and operation-related inspection of residential and commercial onsite sewage disposal systems in Mobile County.

    • The Mobile County Health Department regulates inspections of onsite sewage disposal systems.
    • Sewage and septic tank pumpers are subject to an annual inspection of the pump truck prior to use.
    “Following the ADPH Onsite Sewage Treatment and Disposal Rules , the Mobile County Health Department’s Onsite Sewage division regulates the permitting, installations and inspections of onsite sewage disposal systems (septic tanks) for Mobile County, both residential and commercial.”
    2 more reviewed findings on this topic
    • Required — Residential and commercial onsite sewage disposal systems in Mobile County.
      “requires an annual inspection of the pump truck prior to use.”
    • Required — Installations of onsite sewage disposal systems and sewage tank pumpers in Mobile County.
      “inspections of onsite sewage disposal systems”
  • Off-grid sanitationLimited

    Individual sewage disposal systems serving property without public sewer in unincorporated Mobile County.

    • The adopted plumbing code defines an individual sewage disposal system as septic, cesspool, or mechanical treatment used apart from public sewer.
    • The system is allowed only if public sewer is not available and remains subject to onsite sewage permitting and inspection.
    “INDIVIDUAL SEWAGE DISPOSAL SYSTEM. A system for disposal of domestic sewage by means of a septic tank, cesspool or mechanical treatment, designed for utilization apart from a public sewer. NOTE- this system will be allowed only if public sewer is not available.”
  • Mandatory utility hookupConditional

    Utilities and county services for subdivisions within Mobile County's subdivision jurisdiction.

    • Subdivision-regulation requirements must be complied with.
    • The subdivision must receive final approval by Mobile County before utilities or county services may be extended.
    “No street or road shall be accepted and maintained by the County, nor shall any utilities or county services be extended to the subdivision, unless and until the requirements set forth in these regulations have been complied with and the subdivision has been given final approval by Mobile County.”
    One more reviewed finding on this topic
  • Subdividing landRegulated (with conditions)

    Subdivisions subject to Mobile County Commission approval and subdivisions within the county's subdivision jurisdiction.

    • Subdivisions within municipal limits are approved by the municipality and do not require Mobile County involvement.
    • Subdivisions outside municipal limits but within a municipal planning jurisdiction require planning-commission approval followed by County Engineering administrative review.
    • Subdivisions outside any municipal planning jurisdiction require County Engineering administrative approval, notice to adjacent property owners and utilities, and County Commission approval at a regularly scheduled meeting.
    • County Commission-approved subdivisions must meet the Mobile County Subdivision Regulations.
    “Subdivisions subject to County Commission approval are required to meet the Subdivision Regulations for Mobile County.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivisions in Mobile County, subject to the jurisdictional process described by the county.
      “Subdivisions subject to County Commission approval are required to meet the Subdivision Regulations for Mobile County.”
  • Driveway accessRequired

    Driveways and other work in Mobile County rights-of-way.

    • The requirement applies to work in County rights-of-way; private-property driveway work may fall within building-code exceptions.
    • Applications are made through the County right-of-way permit portal.
    “A Right of Way Encroachment Permit is required for all work in Mobile County Rights of Way.”
    One more reviewed finding on this topic
    • Required — Driveways and other permittable encroachments within Mobile County rights-of-way.
      “A Right of Way Encroachment Permit is required for all work in Mobile County Rights of Way. This is to include driveways, utility, drainage, and any other permittable encroachments.”
  • Building in a floodplainLimited

    Development and construction in flood-hazard areas of unincorporated Mobile County.

    • The Mobile County Flood Damage Prevention Ordinance applies.
    • The Flood Insurance Rate Map effective date stated in the building-code document is March 17, 2010, as revised thereafter.
    • More stringent or restrictive Mobile County codes, requirements, provisions, or ordinances prevail over the adopted model code.
    • Certain small detached accessory structures are exempt only if they meet all listed conditions, including not being in a Special Flood Hazard Area.

    FIRM effective date: March 17, 2010 (as revised thereafter)

    “IBC 1612.3 is amended to state Jurisdiction is Unincorporated Mobile County, Alabama; FIRM Effective date is March 17, 2010 and as revised thereafter.”
    One more reviewed finding on this topic
    • Required — Construction, demolition, alteration, and repair of structures in unincorporated Mobile County when the work is subject to the adopted Flood Damage Prevention Ordinance.
      “The Inspection Services Department's function is to regulate the construction, demolition, alteration, and repair of structures in unincorporated Mobile County. This includes plan review, permitting, and inspection of all work that is subject to the adopted Building Codes and Flood Damage Prevention Ordinance in order to protect the lives and property of the citizens of Mobile County and to promote resiliency in the wake of disasters.”
  • Permit feesPublished (with conditions)

    Mobile County permit fees and applications administered by Inspection Services.

    • The permits page directs users to the fee schedule and Downloads page for permit and application fees.
    • The adopted-codes page states that the current fee schedule became effective July 1, 2026.
    • Specific fee amounts were not included in the opened page text.
    “The Fee Schedule for permits and applications for various permits can be found on our DOWNLOADS page.”
  • Permit processPublished (with conditions)

    Mobile County Inspection Services permitting process for residential and commercial work.

    • Development permitting has two phases: Commercial Site Plan Review serving as the land-disturbance permit, followed by Inspection Services plan review for code compliance and building-permit issuance.
    • Electronic Plan Review is available for residential and commercial permitting.
    • Municipalities may handle permitting within their own jurisdictions.
    “Development permitting with Mobile County has two phases, Commercial Site Plan Review that serves as the land disturbance permit, and Inspections Services that reviews plans for code compliance and issues Building Permits.”

Alabama rules that apply here

  • Well permitLimited

    New groundwater wells and alterations to existing groundwater wells extracting at least 50 gallons per minute when the well is in Alabama's coastal area or its 50-year capture zone extends into the coastal area.

    • A permit from ADEM is required for the covered installation or alteration.
    • The cited rule is limited to the specified coastal-area or capture-zone circumstances and does not establish a general statewide permit requirement for individual private wells.
    • ADEM states that it does not have regulatory authority over individual private wells.

    groundwater extraction rate: >= 50 gallons per minute (Applies when the well surface location is in the coastal area or the 50-year capture zone extends into the coastal area.)

    “The installation of a new well, or alteration of an existing well, for the purposes of extracting groundwater”
  • Agricultural exemptionAvailable (with conditions)

    Alabama residential home-builder licensing for agricultural buildings.

    • The exemption applies to building or improving agricultural buildings.
    • A residence contained in an agricultural building is not exempt from the residential home-builder licensing requirement.
    • This state licensing exemption does not itself establish exemption from Mobile County building permits or building codes.
    “(7) Agricultural buildings, except for any residence contained therein.”
    One more reviewed finding on this topic
  • county zoning authorityLimited

    County zoning and land-use authority over unincorporated Alabama land under general state law and identified special statutory circumstances.

    • General Alabama law does not grant counties broad and general land-use regulatory authority.
    • Several counties have planning and zoning authority created by local law, including examples identified in the official handbook: Baldwin, Russell, Shelby, and Jefferson County.
    • Special statutory authority includes subdivision regulation under Ala. Code § 11-24-1 et seq.; flood-prone-area land-use regulation under Ala. Code § 11-19-1 et seq.; and airport zoning under Ala. Code § 4-6-1 et seq.
    • Flood-prone-area authority concerns areas outside municipal corporate limits and covers areas with a frequency of inundation of once in 100 years; permitted controls include zoning ordinances, subdivision regulations, building codes, health regulations, and related police-power measures.
    • Airport zoning concerns airport hazards and is generally available in the county's unincorporated area, except within a municipality's police jurisdiction and within two miles of a municipality-owned or operated airport when the municipality exercises or declares its intention to exercise zoning control, unless local law provides otherwise.
    • The claim does not establish that every Alabama county has a general countywide zoning ordinance.

    flood-prone-area inundation frequency: 100 years (As defined by qualified hydrologists or engineers using generally accepted hydrology and engineering methods) · airport municipal control area: 2 miles (Applies when the municipality exercises or declares its intention to exercise zoning control, unless local law provides otherwise)

    “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
    2 more reviewed findings on this topic
    • Limited — Alabama county authority to adopt zoning for unincorporated land.
      “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law, although several counties have created some form of planning and zoning authority by local law. However, as set out below, the Legislature has granted limited authority to county governing bodies to address certain special circumstances related to use of land within the territorial jurisdiction of the county.”
    • Limited — County authority over land use and zoning in unincorporated Alabama; general Alabama law does not grant counties broad general zoning authority, but limited authority exists through special local laws and specified statutory circumstances.
      “Counties in Alabama do not have broad and general land use regulatory authority under general Alabama law”
  • county building authorityGeneral

    Authority of Alabama county commissions to adopt and administer building laws and codes for residential construction in unincorporated areas.

    • A county commission may adopt building laws and codes by ordinance or, under the 2025 version of Section 34-14A-12, by resolution.
    • The ordinary county-code jurisdiction is the unincorporated area of the county.
    • County building laws and codes may not apply within a municipal police jurisdiction where the municipality is exercising its building laws or codes without the municipality's express consent.
    • County building laws and codes may apply within municipal corporate limits only with the express consent of the municipal governing body.
    • Under the 2025 statute, the county must provide the Board a copy of the resolution within 10 business days.
    • A local building law or code generally may not take effect until 120 days after adoption; for insurance-claim work requiring a license, the effective date is the date of adoption.
    • The county commission may employ building inspectors and exact fees from owners of inspected property.
    • The county may enter mutual agreements, compacts, or contracts with municipalities and other public entities for administration and enforcement.

    local-code notice deadline: 10 business days (Copy of resolution must be provided to the Home Builders Licensure Board) · local-code ordinary effective delay: 120 days (Insurance-claim work requiring a license may use the adoption date)

    “A county commission, by resolution, may adopt building laws and codes that shall apply in the unincorporated areas of the county. The county commission shall provide a copy of any resolution adopted pursuant to this subsection to the board withing 10 business days of adopting the resolution.”
    One more reviewed finding on this topic
    • General — Alabama county authority to adopt and enforce residential building laws and codes in unincorporated areas.
      “There are two general statutory provisions authorizing counties to adopt building codes: the Home Builders Licensure Law found at Ala. Code § 34-14A-1 et seq. and the law on the state minimum building standards code found at Ala. Code § 41-9-160 et seq.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Short-term rentals — Short-term rentals in Mobile County.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Mobile County, Alabama

Is Mobile County a good place to live off-grid or homestead?

Mobile County scores 71/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and strong self-sufficiency basics: 64.5″/yr rainfall with little drought. Watch-outs: a weaker property-autonomy legal backdrop.

Do you need a building permit in Mobile County, Alabama?

Mobile County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by Mobile County Health Department, Onsite Sewage Division. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

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

Living in an RV on your own land in Mobile County is allowed: Unincorporated Mobile County: no county rule sets this, because Mobile County has adopted no county zoning ordinance (Alabama law lets some counties zone, but this one has not). Mobile County's own reviewed answer confirms it has no county-wide zoning. Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits. Alabama counties lack broad, general land-use regulatory authority under general Alabama law. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Mobile County, Alabama?

Land in Mobile County runs about $4,768 per acre, based on the latest county data.

What is the water situation in Mobile County?

Mobile County gets about 64.5" of rain a year, with severe drought in roughly 7.3% of years.

How remote is Mobile County?

A representative private-land location has about 8,394 people within a 30-minute drive and 1,630,120 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Mobile compares in Alabama

Compare side-by-side →See all 67 Alabama counties ranked →