Huntsville Bathroom Remodel Guide: Permits, Licenses and Moisture Control

A free cost and process guide for homeowners in Huntsville and the rest of Madison County, from Get Bathroom Pros.

Plan around the rules

The price of a Huntsville bathroom remodel depends on tile, fixtures, layout and labor, and no guide can estimate it honestly without seeing the room. What is predictable are the rules: who may do the work, who pulls permits and what the climate demands of a bathroom. This guide lays those out.

Who pulls the permits

The City of Huntsville says plumbing, electrical, gas and mechanical work must be permitted by the contractor holding the appropriate license for that trade. For a bathroom:

  • the plumber pulls the plumbing permit for moved drains, new supply lines or a new tub or shower valve;
  • the electrician pulls the electrical permit for new circuits, heated floors or a new fan circuit;
  • a remodeler coordinates them and may pull the building permit.

Ask the remodeler for a list of permits and who will pull each one, and keep the permit numbers.

The license threshold

In Alabama, building, remodeling or repairing a residence when the job costs more than $10,000 needs a license from the Home Builders Licensure Board. A limited license covers only a single-trade job contracted directly with the homeowner that does not affect structure; a multi-trade bathroom remodel usually needs an unlimited license. Ask which license your contractor holds and look it up.

Moisture is the main enemy

The Huntsville/Madison station averages about 935 hours a year with the wet-bulb temperature above 73°F. Humid outdoor air plus daily showers means bathrooms need strong ventilation. Ask for:

  • an exhaust fan sized for the room and ducted outside;
  • a humidity-sensing control or timer;
  • a waterproofing membrane behind shower tile;
  • moisture-resistant drywall or cement board where appropriate.

Pipes on outside walls

The station averages about 40 freeze-thaw cycles a year. If the remodel puts supply lines in an exterior wall, ask how they will be insulated or whether they can be moved to an interior wall.

The order of work

1. Design, layout and selections. 2. Permits. 3. Demolition. 4. Rough plumbing and electrical. 5. Rough-in inspections. 6. Waterproofing and backer board. 7. Tile. 8. Vanity, toilet, fixtures and glass. 9. Final inspection and walkthrough.

Comparing quotes

Ask for line items for demolition, plumbing, electrical, fan and ducting, waterproofing, tile, fixtures, glass, permits and cleanup. Ask what happens if rot is found under the old tub, and how it will be priced.

Questions to ask

  • Which waterproofing system will you use, and do you flood test the shower pan?
  • How long until the bathroom is usable again?
  • What warranty covers your workmanship?

Records

Keep permits, inspection results, warranties and invoices together.

Sources for this guide

  • The City of Huntsville's permit-cost page says any plumbing, electrical, gas or mechanical work must be permitted by the contractor holding the appropriate license for that trade, and directs questions to the city Inspection Office. Source: City of Huntsville, Permit Costs
  • In an average year at the Huntsville/Madison station, NOAA counts about 935 hours with the wet-bulb temperature above 73°F and about 2,509 hours above 67°F, the measure engineers use to flag a humid climate. Source: NOAA NCEI Engineering Weather Data (Huntsville/Madison, AL)
  • NOAA's engineering weather data for the Huntsville/Madison station lists an average of 40 freeze-thaw cycles a year, a 50-year frost depth of 9 inches and a 50-year ground snow load of 5 pounds per square foot. Source: NOAA NCEI Engineering Weather Data (Huntsville/Madison, AL)
  • In Alabama, building, remodeling or repairing a residence when the job costs more than $10,000 needs a license from the Home Builders Licensure Board. A limited license, which needs no exam, covers only a single-trade job contracted directly with the homeowner that does not affect the home's structural integrity; other jobs need an unlimited license, which requires passing skill and business-and-law exams. Source: Alabama Home Builders Licensure Board, On The Level newsletter

Sources checked 2026-10-26. Every cost figure on this page comes from a source named above; fees and rules change, so confirm current amounts with the office that sets them before you budget.

More for Huntsville homeowners: Bathroom Remodeling in Huntsville, AL.

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