Madison County, AL Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Madison County, AL, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.
Key Facts
- Permit-exempt size
- One-story detached accessory structure under 200 sq ft
- Exception to exemption
- Garage, tool shed, similar structure always needs a permit
- Permit fee
- Greater of $150 or $0.17 per sq ft under roof
- Late-permit penalty
- Permit fee tripled under § R105.9
- Enforcing office
- Madison County Inspection Department
Summary
Madison County exempts one-story detached accessory structures under 200 square feet from a building permit, but a garage, tool shed, or other similar structure is expressly carved out of that exemption and still needs one. Permits run through the Inspection Department under the county's amended Residential Code.
Subsection R105.2 Amended- Work exempt from permit. Permits shall not be required for the following. Exemption from the permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. Building: 1. One-story detached accessory structures provided the floor area does not exceed 200 square feet (18.58 meter squared). A garage, tool shed, or other similar structure is expressly excluded from this exception.
Full Breakdown
2 of the 2018 International Residential Code, which the county adopted for the unincorporated area. As amended, permits are not required for "one-story detached accessory structures provided the floor area does not exceed 200 square feet," but the same paragraph carves out an exception within the exception: "a garage, tool shed, or other similar structure is expressly excluded from this exception," meaning those buildings need a permit no matter how small. Decks under 200 square feet that sit within 30 inches of grade, aren't attached to the dwelling, and don't serve a required exit door are separately exempt.
17 per square foot, plus a Homebuilders' Academy fee of $20 for new construction and $10 for sub-permits, collected since October 1, 2020. 9's penalty: the permit fee is tripled. Permits issued under this code become invalid if work is not started within 180 days or is abandoned for a year, though the building official can grant written extensions of up to 90 days at a time for justifiable cause. Because the county has no zoning, this permit-exemption threshold, not a setback or lot-coverage rule, is the operative limit on unincorporated shed and outbuilding construction.
Violations & Fines
Building without a permit where one is required, including any garage, tool shed, or similar accessory structure regardless of size, triggers Section R105.9: the permit fee is tripled once the Inspection Department catches the unpermitted work. Exemption from the permit requirement never authorizes work done in violation of the code or other county ordinances.
Frequently Asked Questions
Can I build a small shed in unincorporated Madison County without a permit?
What does a shed permit cost in Madison County?
What happens if I build a shed without getting a required permit first?
Sources & Official References
Other rules in Madison County
How Madison County compares: Shed Permit Requirements by City·Compare Madison County to another location·View the Alabama accessory structures overview
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