Building permits, zoning and septic rules in Shelby County, Alabama

Shelby County requires a building permit for new construction, including moved homes, manufactured homes, recreational vehicle connections and accessory structures¹. Unlike most Alabama counties near it, Shelby County requires a county building permit¹. Inside Alabaster, Pelham and Helena, the city's own office takes building-permit applications instead^6,7,8; septic permits for city addresses still come through the Shelby County Health Department⁶. Listed work over 200 square feet also requires a permit¹. The county lists some minor work that may not need a building permit, including fences under seven feet, retaining walls under four feet, sidewalks, driveways, painting, flooring, countertops and faucet replacement¹. Permitted work then goes through inspections, and the required inspections vary by construction stage and project¹¹. Shelby County currently enforces the 2015 residential and energy codes, the 2024 building and related trade codes, and the 2026 electrical code¹⁴. Alabama's licensing exemption lets an owner act as contractor for an owner-occupied one-family or two-family residence when the owner personally provides all material supervision and does not build it for sale¹². That licensing exemption does not remove Shelby County's permit, code or inspection requirements^1,11,12.

Shelby County Permits and Inspections handles the county building-permit and inspection process, while Development Services also provides planning, land development, fire safety and permit coordination^1,11,15. Reach Permits and Inspections at (205) 620-6650 or visit 1123 County Services Dr., Pelham, AL 35124-6128, Monday through Friday from 8:00 a.m. to 4:30 p.m¹. The published application fee is $100; nonresidential permits also carry a $1 charge per $1,000 of authorized construction, but ask the office for the complete project total². Permit documents may be placed in the lobby drop box, given to a clerk, mailed to Development Services or emailed to the department¹. Planning Services uses the same phone number and address for zoning and land-development questions¹⁵.

County zoning covers only territory outside municipal limits, and only in beats where a majority of voters accepted the Planning Commission's authority; land annexed by a city falls under that city's rules instead³. Planning Services provides zoning approval for unincorporated Shelby County, Montevallo, Vincent and Wilsonville, and the county administers zoning and subdivision regulations there². Projects inside Chelsea, Columbiana, Indian Springs Village and Wilton need zoning approval from those towns before a county permit application². Alabaster and Pelham run their own zoning^4,5. Ask Planning Services to verify the controlling jurisdiction, district and overlay for the parcel^15,16. County zoning districts regulate use, building height, lot coverage, yards, open space and density, but we could not confirm one numeric height limit for every district¹⁶. Planned residential development provisions set a floor of 5,000 square feet and 60 feet of frontage for a detached-home lot, but those figures are not countywide minimums and the Planning Commission may waive provisions or impose greater requirements¹⁷. Setbacks vary by district, and zoned parcels need a setback-verification survey for a building permit¹³.

A new or repaired onsite sewage system serving property without public sanitary sewer needs a Permit to Install before construction begins⁹. Submit the application and plans to the local county health department; approval depends on meeting the applicable rules, and installation must be performed by an Alabama Onsite Wastewater Board licensee⁹. The Shelby County Environmental Office is the local contact, while the Alabama Department of Public Health coordinates the county-health-department program and enforces its requirements¹⁰. Shelby County's building checklist also requires a Sewer/Septic Tank Authorization Form or a paid sewer impact-fee letter, except for a self-contained RV². Reach the Shelby County Health Department at (205) 685-4178². Only about 19% of county soils are rated without severe limitations for a conventional drain field, so settle septic feasibility before choosing a house site¹⁸. For a proposed subdivision, adequate water and wastewater facilities are required, and county subdivision approval does not guarantee later septic approval for an individual lot².

In territory subject to Shelby County zoning, a major recreational vehicle may not be used for living, sleeping or housekeeping for more than 21 days on a residential lot or at any location not approved for that use³. A major recreational vehicle also may not be parked or stored in a required front yard in a residential district³. A tiny home with an axle may occupy a legal lot of any size in unincorporated, unzoned Shelby County under the manufactured-home-community regulations; on zoned land, one manufactured or mobile home or recreational vehicle may be placed in the A-1 Agricultural District¹³. A tiny home on a permanent foundation must comply with Shelby County's adopted building code^13,14. The general limit is one manufactured or mobile home or recreational vehicle per legal lot, while two or more require compliance with the manufactured-home-community regulations¹³. RV connections and manufactured-home placement still require a building permit¹.

1. Ask Planning Services at (205) 620-6650 to verify the parcel's jurisdiction, zoning district and overlays; county zoning applies only in qualifying unincorporated beats, and municipal approval may control elsewhere^2,3,15.
2. Confirm that the proposed use, building height, setbacks and lot coverage fit the applicable district^13,16.
3. If the site is off sewer, apply through the local health department and wait for the Permit to Install before septic construction begins⁹.
4. Get Highway Department approval for a new access drive connecting to a Shelby County-maintained road¹⁹.
5. Assemble the zoning approval, address information, plans and required septic or sewer documentation listed by Development Services¹.
6. For a FEMA-floodplain project, obtain the Flood Plain Development Permit and survey¹¹.
7. Submit the building-permit documents, pay the applicable fees and schedule inspections for the required construction stages^1,2,11.

Verify the zoning authority and district before relying on a listing's description of permitted use^2,3,16. Resolve septic feasibility early because only about 19% of Shelby County soils are rated without severe limitations for a conventional drain field¹⁸. A land division may qualify for the agricultural or single-dwelling exemption when every resulting parcel is at least 20 acres, needs no roadway, drainage or other improvements, and remains limited to those uses²⁰. Other subdivisions remain subject to county review, including major subdivisions with more than five lots or infrastructure improvements²⁰. A driveway connecting to a county-maintained road needs Shelby County Highway Department approval¹⁹. A FEMA-floodplain project needs a Flood Plain Development Permit and survey¹¹. We could not confirm a general private-well permit rule; ask Development Services or the Health Department before drilling^2,15. Median property taxes are about $1,343 per year at an effective rate near 0.4%¹⁸.