Huntsville does not impose a general residential impact fee on accessory dwelling units. Alabama law does not broadly authorize municipal residential impact fees outside specific statutory grants. ADU costs include standard building, electrical, plumbing, and mechanical permit fees through the Huntsville Inspection Department plus Huntsville Utilities tap fees if a new water, sewer, or electric service is required.
Alabama Code Title 11 does not grant municipalities general authority to impose residential impact fees in the way California (Gov. Code §66000 Mitigation Fee Act) and other states do. Huntsville does not charge a general ADU impact fee, school impact fee, transportation impact fee, or parks impact fee. ADU costs consist of: (1) Building permit fees set by the Huntsville Inspection Department, calculated on construction valuation per the fee schedule in Code of Ordinances Chapter 6; (2) Separate electrical, plumbing, and mechanical/gas permit fees; (3) Plan-review fees; (4) Zoning compliance review through the Huntsville Planning Division. Huntsville Utilities — the municipally-owned electric, water, and natural gas provider — charges tap and capacity fees when a new service is required (typically several hundred to a few thousand dollars depending on meter size). Madison County does not impose school impact fees. Stormwater and street-cut fees may apply if the ADU triggers additional impervious surface or a utility cut in the public right-of-way. Property tax on the added improvement is reassessed by the Madison County Tax Assessor at the next assessment cycle.
Failure to pay required permit fees prevents permit issuance. Unpaid Huntsville Utilities tap fees prevent service connection. Building without permits triggers double permit fees as an after-the-fact assessment, plus daily fines under Code of Ordinances Sec. 1-6.
Huntsville, AL
Huntsville generally allows overnight on-street parking in residential neighborhoods subject to the 24-hour movement rule. Downtown and posted zones prohibit...
Huntsville, AL
Huntsville allows RV and boat parking on residential property but restricts street storage to 72 hours. RVs must be parked on paved or gravel surfaces in sid...
Huntsville, AL
Huntsville limits on-street parking to 24 hours in most residential areas and 2 hours in downtown business districts. Parking meters enforced 8 AM-5 PM weekd...
Huntsville, AL
Huntsville defines abandoned vehicles as those left on public property over 72 hours or private property over 10 days without owner consent. Inoperable vehic...
Huntsville, AL
Huntsville prohibits commercial vehicles over 10,000 lbs GVW from parking in residential zones overnight. Tractor-trailers, dump trucks, and construction equ...
Huntsville, AL
Huntsville has wildland-urban interface areas near Monte Sano, Green Mountain, and Madison County forested zones. AFC monitors fire danger and issues county ...
See how Huntsville's adu impact fees rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.