Montgomery County, TX Permit Fees (2026)

Building permit fees for unincorporated Montgomery County, with a free permit fee calculator. Inside city limits? Pick your city below; incorporated cities have their own fee schedules.

Unincorporated Montgomery County has no county building-code, electrical, plumbing or mechanical permit. The county issues a development permit for each new structure or addition (flat for homes, banded by square footage for commercial buildings) and the Fire Marshal charges a Fire Code fee by square footage on commercial buildings and build-outs. A home remodel on public water and sewer outside the floodplain and a home re-roof need no county permit. Work inside a city's limits is permitted by that city.

Building Permit

Every documented fee up top, then calculate an itemized estimate for your job below.

Jump to Permit Fee Calculator

Source

Montgomery County Permit Department Permitting Fee Schedule (effective June 2, 2025) and Fire Marshal's Office Fire Code Fee Schedule (effective May 14, 2025)

Covers building and roofing permits.

Official Fee Schedule

Call the building department at 936-539-7836.

How Unincorporated Montgomery County values a job: Montgomery County issues development permits rather than building-code permits: residential structure permits are flat, and commercial structure permits and Fire Code fees are priced by the building's square footage.

Schedules effective May 14, 2025 – June 2, 2025. Last verified: November 3, 2026

Jurisdictions in Montgomery County

Jobs inside city limits are permitted by the city, not the county. Across Montgomery County's 11 covered jurisdictions, a building permit for a $50,000 remodel runs from $0.00 (Shenandoah) to $970.00 (Montgomery).

Unincorporated Montgomery CountyConroe Cut and Shoot Magnolia Montgomery Oak Ridge North Panorama Village Shenandoah Stagecoach Willis Woodloch

Unincorporated Montgomery County Permit Fee Schedule

Every documented rule for each permit type, straight from the official schedule.

Building Permit Fees in Unincorporated Montgomery County

Residential (1–2 family): Addition to a home (each addition needs its own permit; remodels on public water and sewer need none)

$200.00 flat‡

Residential (1–2 family): New home, manufactured home or other new structure over 200 sq ft (outside the floodplain)

$200.00 flat

Residential (1–2 family): Demolition, driveway, fill or land clearing with no new structure (non-structure permit)

$250.00 flat

Residential (1–2 family): Demolition, driveway, pool, fence or fill in the floodplain (non-structure permit)

$300.00 flat

Residential (1–2 family): Addition to a home in the floodplain

$300.00 flat‡

Residential (1–2 family): New home or structure over 200 sq ft in the floodplain

$300.00 flat

Residential (1–2 family): Shed or other new structure of 200 sq ft or less with no plumbing (outside the floodplain)

$50.00 flat

Residential (1–2 family): Shed or other new structure of 200 sq ft or less with no plumbing, in the floodplain

$100.00 flat

Commercial / 3+ units: Interior build-out, new lease space or change of use in an existing building (Fire Code permit, by square feet)

tiered rates by sq ft‡

Up to 5,000 sq ft

$500.00

Over 5,000, up to 50,000 sq ft

$500.00 plus $100.00 per additional 1,000 sq ft

Over 50,000 sq ft

$5,000.00 plus $150.00 per additional 1,000 sq ft

Commercial / 3+ units: New commercial building, rental home or apartment building (by square feet, outside the floodplain)

tiered rates by sq ft

Up to 4,999.99 sq ft

$500.00

Over 4,999.99, up to 9,999.99 sq ft

$750.00

Over 9,999.99, up to 14,999.99 sq ft

$1,000.00

Over 14,999.99, up to 20,000 sq ft

$1,500.00

Commercial / 3+ units: Demolition, driveway, paving or land clearing in the floodplain (non-structure permit)

$300.00 flat

Commercial / 3+ units: Demolition, driveway, paving or land clearing with no new structure (non-structure permit)

$250.00 flat

Commercial / 3+ units: Addition to a commercial building (by square feet of the addition, outside the floodplain)

tiered rates by sq ft‡

Up to 4,999.99 sq ft

$500.00

Over 4,999.99, up to 9,999.99 sq ft

$750.00

Over 9,999.99, up to 14,999.99 sq ft

$1,000.00

Over 14,999.99, up to 20,000 sq ft

$1,500.00

Commercial / 3+ units: New commercial building or rental home in the floodplain (by square feet)

tiered rates by sq ft

Up to 4,999.99 sq ft

$600.00

Over 4,999.99, up to 9,999.99 sq ft

$850.00

Over 9,999.99, up to 14,999.99 sq ft

$1,100.00

Over 14,999.99, up to 20,000 sq ft

$1,600.00

Fire Code review fee (Fire Marshal, by building square feet) (select fee rules only)

$500.00 by sq ft‡

Up to 500 sq ft

$0.00

Over 500, up to 5,000 sq ft

$500.00

Over 5,000, up to 50,000 sq ft

$500.00 plus $100.00 per additional 1,000 sq ft

Over 50,000 sq ft

$5,000.00 plus $150.00 per additional 1,000 sq ft

Fire Code review fee for an addition (Fire Marshal, by square feet of the addition) (select fee rules only)

$500.00 by sq ft‡

Up to 5,000 sq ft

$500.00

Over 5,000, up to 50,000 sq ft

$500.00 plus $100.00 per additional 1,000 sq ft

Over 50,000 sq ft

$5,000.00 plus $150.00 per additional 1,000 sq ft

Non-structure permit for site work with a new commercial building (select fee rules only)

$250.00‡

Non-structure permit for site work with a new commercial building in the floodplain (select fee rules only)

$300.00‡

Development permit recertification (select fee rules only) (if applicable)

50% of the permit fee (half of the original permit fee)

Expedited Fire Code review (under 5 working days or after hours) (if applicable)

$500.00

Fire alarm system permit (100 or fewer initiating devices) (if applicable)

$250.00

Fire sprinkler system permit (more than 10, up to 100 heads) (if applicable)

$250.00

Fixed fire suppression system permit (per system) (if applicable)

$250.00

Hazardous materials occupancy (added to the Fire Code fee) (if applicable)

$250.00

‡ Awaiting confirmation from the jurisdiction.

Mechanical / HVAC Permit Fees in Unincorporated Montgomery County

Unincorporated Montgomery County issues no mechanical or HVAC permit. Licensed electricians, plumbers and air conditioning contractors work under their Texas state licenses here, with no county trade permit or fee. A county development permit applies to each new structure or addition, a commercial building or build-out also needs a Fire Code permit from the Fire Marshal, and septic work needs a county septic permit. Inside a city's limits, the city permits the work.

Sponsor This Page

Be the Featured HVAC Company in Unincorporated Montgomery County

Homeowners and contractors planning a project check Unincorporated Montgomery County mechanical / HVAC permit fees here first. One sponsor per trade, flat monthly rate.

Advertise on This Page

Unincorporated Montgomery County Permit Fee Calculator

Pick a permit type and adjust the job value. Total updates instantly, itemized below.

Permit type

Project type

Kind of work

Unincorporated Montgomery County does not have a documented mechanical / HVAC fee for this project type in our sourced data yet. Check the official fee schedule linked above, or ask the building department.

Estimate only. Confirm with the Unincorporated Montgomery County building department before applying. Phone: 936-539-7836. Permit fees only; excludes impact fees, utility connection charges, and other non-permit charges.

Sponsor This Page

Be the Featured HVAC Company in Unincorporated Montgomery County

Homeowners and contractors planning a project check Unincorporated Montgomery County mechanical / HVAC permit fees here first. One sponsor per trade, flat monthly rate.

Advertise on This Page

How to Apply for a Permit in Unincorporated Montgomery County

Submit a completed Development Permit Application (Residential or Commercial) with the site plan or survey, stormwater compliance certificate and the other checklist items to the Montgomery County Permit Department at 501 North Thompson, Suite 100, Conroe; incomplete submittals are rejected and each structure or addition needs its own permit. Pay each permit fee separately by exact check or money order made payable to Montgomery County; fees are non-refundable. Commercial buildings over 500 square feet, additions and interior build-outs also need a Fire Code permit reviewed by the Fire Marshal's Office, and properties in or within 100 feet of the floodplain need Floodplain Administration review.

Source: Unincorporated Montgomery County application instructions

Building Department Contact

Phone: 936-539-7836
Email: info.permits@mctx.org
Address: 501 North Thompson, Suite 100, Conroe, TX 77301
Hours: Monday to Friday, 8:00 a.m. to 3:00 p.m.
Fire Marshal Phone: 936-538-8288
Fire Marshal Email: fire.codes@mctx.org
Source: Official contact page

Unincorporated Montgomery County Permit Fee FAQs

How Much Does a Building Permit Cost in Unincorporated Montgomery County?

The building permit for a $50,000 residential remodel runs $200.00, including the documented surcharges and minimum fees. The estimate is built from Unincorporated Montgomery County's sourced fee schedule, and it covers the building permit alone; a job that combines trades pays each applicable permit. Calculate your job's value for an itemized total.

Where Do These Fees Come From?

Every figure on this page is sourced from Montgomery County Permit Department Permitting Fee Schedule (effective June 2, 2025) and Fire Marshal's Office Fire Code Fee Schedule (effective May 14, 2025). See the official schedule. Last verified November 3, 2026.

Montgomery County, TX Permit Fees (2026)

Jurisdictions in Montgomery County

Unincorporated Montgomery County Permit Fee Schedule

Building Permit Fees in Unincorporated Montgomery County

Electrical Permit Fees in Unincorporated Montgomery County

Plumbing Permit Fees in Unincorporated Montgomery County

Mechanical / HVAC Permit Fees in Unincorporated Montgomery County

Roofing Permit Fees in Unincorporated Montgomery County

Unincorporated Montgomery County Permit Fee Calculator

How to Apply for a Permit in Unincorporated Montgomery County

Unincorporated Montgomery County Permit Fee FAQs

How Much Does a Building Permit Cost in Unincorporated Montgomery County?

Where Do These Fees Come From?

Get in Touch