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Do you need a permit for a basement finish?

Permits for basement finishes are set locally: the city or county building department decides, under the code it has adopted. Below are the official rules and fees we verified, in each department's own words.

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On this page
  1. Emergency escape and rescue openings (IRC R310 (R310.1, R310.2.1-R310.2.3, R310.4.1))
  2. Smoke alarms (IRC R314.3 (and R314.2.2/R314.4))
  3. What cities charge for a basement finish permit
  4. Before you start
  5. Sources

Emergency escape and rescue openings (IRC R310 (R310.1, R310.2.1-R310.2.3, R310.4.1))

The International Residential Code (IRC) is a model code. It is law only where a state or city adopts it, usually with changes, so the wording below shows how the model reads in published government copies, not the rule where you live.

  • R310.2.1 Minimum size. Emergency escape and rescue openings shall have a net clear opening of not less than 5.7 square feet (0.530 m2).1 As published by Galveston, TX (2021 IRC).
  • Exception: The minimum net clear opening for grade floor emergency escape and rescue openings shall be 5 square feet (0.465 m2).1 As published by Galveston, TX (2021 IRC).
  • The minimum net clear opening height dimension shall be 24 inches (610 mm).1 As published by Galveston, TX (2021 IRC).
  • The minimum net clear opening width dimension shall be 20 inches (508 mm).1 As published by Galveston, TX (2021 IRC).
  • R310.2.3 Maximum height from floor. Emergency escape and rescue openings shall have the bottom of the clear opening not greater than 44 inches (1118 mm) above the floor.1 As published by Galveston, TX (2021 IRC).

Smoke alarms (IRC R314.3 (and R314.2.2/R314.4))

The International Residential Code (IRC) is a model code. It is law only where a state or city adopts it, usually with changes, so the wording below shows how the model reads in published government copies, not the rule where you live.

  • Smoke alarms shall not be closer than 3 feet from a bathroom door containing bathtub or shower, unless this would prevent the placement of a smoke alarm required by Section R314.3.2 As published by Anne Arundel County, MD (IRC 2021).
  • Where more than one smoke alarm is required in accordance with Section R314.3, the alarm devices shall be interconnected.2 As published by Anne Arundel County, MD (IRC 2021).
  • Smoke alarms shall be installed in the following locations: 1. In each sleeping room. 2. Outside of each separate sleeping area in the immediate vicinity of the bedrooms.3 As published by Los Angeles County, CA (Los Angeles County Residential Code).
  • Smoke alarms shall be installed not less than 3 feet horizontally from the door or opening of a bathroom that contains a bathtub or shower unless this would prevent placement of a smoke alarm required by this section.3 As published by Los Angeles County, CA (Los Angeles County Residential Code).
  • R314.3 Location. Smoke alarms shall be installed in the following locations: 1. In each sleeping room. 2. Outside each separate sleeping area in the immediate vicinity of the bedrooms.4 As published by Yakima County, WA (2012 IRC, Washington State Amended (2013 handout)).

What cities charge for a basement finish permit

Fee lines as each city’s schedule states them, never added up into a total; how permit fees work explains valuation formulas and minimums.

CityFeeAs the schedule states it
Charlotte, NCNote a: projects under $100,000 valuation, renovation/alteration and upfit (per trade + per sq ft)$79.61 per trade (BEMP), plus $.12 per square foot for building trade and $.08 per square foot for each involved electrical, mechanical or plumbing trade.5
Indianapolis, INStructural Permit - Residential: Remodeling, alteration, or repair of Class 2 structures; no additionApplication $40; Review $150 (≤1,000 sqft) $25 per additional 500 sqft; Issuance $200 (≤1,000 sqft) $50 per additional 500 sqft6
Baltimore, MDAlterations and repairs, 1- and 2-family dwellings1. 1- and 2-family dwellings $0.30 per square foot or fraction of a square foot of affected gross floor area Minimum $507
Milwaukee, WIAlterations, remodeling and repairsThe fee for all alterations, remodeling, repairs and repairing fire damage to all buildings, structures and equipment shall be computed at 1.6% of the cost of construction.8
Raleigh, NCAlterations and Repairs Plan Review FeeAlteration and Repairs Plans Review Fee 50.00% 55.00% % Of Calculated Building Permit9
Colorado Springs, COTable A building permit fee (row $1 to $500)$1 to $500 $50.0010
Colorado Springs, COTable A building permit fee (row $501 to)$501 to $2,000 $50.00 for the first $500 plus $2.00 for each additional $100 or fraction thereof, to and including $2,00010
Colorado Springs, COTable A building permit fee (row $2,001 to)$2,001 to $25,000 $80.00 for the first $2,000 plus $8.00 for each additional $1,000 or fraction thereof, to and including $25,00010
Aurora, COFlat rate: basement finish, fire damage repair$536 EACH • Basement Finish • Fire Damage Repair11
Aurora, COSales and Use Tax deposit (city)--Sales and Use Tax deposit · 3.75% of total construction materials cost12

Before you start

Find your city’s basement finish rule with the permit checker. What to check before you buy materials (city limits, limits in the rule, zoning and HOA rules) and the order of the steps are in how to get a building permit; what an exemption does not cover is in work exempt from a permit.

Sources

  1. Windows and Sliding Glass Door ComplianceCity of Galveston, TX, Building DepartmentChecked November 7, 2026
  2. Smoke Alarms (IRC 2021)Anne Arundel County, MDPublished June 23, 2024Checked November 7, 2026
  3. Smoke and Carbon Monoxide Alarms HandoutLos Angeles County Public Works, Building and SafetyChecked November 7, 2026
  4. (2012) Smoke Detector & Carbon Monoxide AlarmsYakima County, WA, Public Services, Building & Fire Safety DivisionRevised December 13, 2013Checked November 7, 2026
  5. Mecklenburg County Government Fee Ordinance, Land Use and Environmental Services (revised July 1, 2026)Mecklenburg County Board of County Commissioners / Land Use and Environmental Services Agency (LUESA)Revised July 1, 2026Checked November 7, 2026
  6. Fee Schedule (as of January 5, 2026) [XLSX]City of Indianapolis, Department of Business and Neighborhood ServicesEffective January 5, 2026Checked November 7, 2026
  7. Section 109. Fees (Building Code)City of Baltimore Law Library (Department of Legislative Reference)Checked November 7, 2026
  8. Milwaukee Code of Ordinances ch. 200, subchapter 5 (Fees)City of Milwaukee, Department of Neighborhood ServicesRevised November 8, 2024Checked November 8, 2026
  9. Development Fee Guide July 1, 2026 - June 30, 2027City of Raleigh, Planning and DevelopmentEffective July 1, 2026Checked November 7, 2026
  10. Fee Schedule - Pikes Peak Regional Building Department (Appendix B: Fee Schedule, 2023 PPRBC)Pikes Peak Regional Building Department (PPRBD)Effective June 30, 2025Checked November 7, 2026
  11. 2026 Flat Rate Fee Permits (Flat-Rate Fee, Revised 08/2026, Form #A175)City of Aurora, Development Services Department, Building DivisionRevised August 2026Checked November 7, 2026
  12. Development Fees Checklist - City of AuroraCity of Aurora, Development CenterEffective 2026Checked November 7, 2026