State building permit guide
Alabama building permits — complete guide (2026)
Alabama uses the International Building Code with local amendments. Jefferson County (Birmingham) and Mobile have the most active permitting offices. Rural counties can have minimal requirements.
Avg cost: $150–$500
Processing: 1–4 weeks
~22,000 permits/year
67 counties
$150–$500Average permit cost
1–4 weeksProcessing time
~22,000Permits issued/year
No statewide lawADU-friendly
Alabama does not have a mandatory statewide residential building code for unincorporated areas. However, most cities and counties have adopted the IBC. Jefferson, Shelby, and Mobile Counties have full enforcement. Always verify with your local jurisdiction before starting work.
Permit costs by type — Alabama
| Permit type | Fee range | Processing time | Notes |
|---|---|---|---|
| Electrical | $75–$200 | 1–3 days | Licensed electrician required in most cities |
| Plumbing | $60–$175 | 1–3 days | Water heater replacement commonly permitted |
| HVAC / Mechanical | $75–$200 | 1–4 days | AC replacement — high volume in summer |
| Roofing | $100–$250 | 1–3 days | Full replacement requires permit in cities |
| Deck / Patio | $100–$300 | 1–3 weeks | Structural plans often required |
| Room Addition | $300–$800 | 2–5 weeks | Varies significantly by jurisdiction |
| New Construction | $500–$1,500 | 2–6 weeks | Lower cost than national average |
| Pool | $175–$450 | 2–4 weeks | Barrier fence required statewide |
| Fence | $50–$150 | 1–5 days | Height limits vary by city |
| Solar | $75–$200 | 1–5 days | Growing market, streamlining underway |
How to get a building permit in Alabama
1
Find your local building department
Alabama permits are issued at the city or county level. Jefferson County, Mobile, and Huntsville have full-service departments. Contact your municipality first.
2
Determine if plans are required
Trade permits rarely need plans. Structural work — additions, new construction — requires architectural plans in most jurisdictions.
3
Submit application and pay fees
Fees are based on project valuation. Alabama fees are generally below the national average.
4
Inspections
Cities require phase inspections. Rural areas may have limited inspection staff — schedule in advance.
5
Certificate of Occupancy
Required for new construction and major additions before the space can be used.
Permit costs by county — top Alabama counties
Jefferson (Birmingham) County
$150–$500
2–5 weeks
Mobile County
$125–$400
2–4 weeks
Madison (Huntsville) County
$125–$400
2–4 weeks
Shelby County
$125–$375
1–4 weeks
Montgomery County
$100–$350
1–4 weeks
Baldwin County
$125–$400
2–4 weeks
Frequently asked questions — Alabama permits
Does Alabama require permits in rural areas?
Not always. Unincorporated areas without adopted codes may have no permit requirements. Verify with your county before assuming.
What is the Alabama Building Commission?
The ABC sets minimum building standards for state-funded buildings and provides oversight, but local jurisdictions enforce codes for private construction.
Can I do my own electrical work in Alabama?
Yes, homeowners can perform electrical work on their own primary residence in most Alabama jurisdictions, but must pull a permit and pass inspection.
Does Alabama require pool fencing?
Yes. Alabama follows IRC pool barrier requirements — minimum 48-inch fence with self-latching gate on all in-ground and above-ground pools over 24 inches.
Data sources: US Census Bureau BPS 2024 · Alabama Alabama Building Commission · Shovels.ai permit aggregator