Current Building Codes
The City of Duncanville is under the following Codes as adopted and signed by Mayor Greg Contreras on October 23, 2025.
- International Building Code 2021
- International Residential Code 2021
- International Property Maintenance Code 2021
- International Energy Conservation Code 2021
- International Fuel Gas Code 2021
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- International Mechanical Code 2021
- International Plumbing Code 2021
- National Electrical Code 2023
- International Fire Code 2021
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When Are Permits Required?
Building Permits
Section 105.1 of the International Building Code 2015 Edition states "Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building or structure, or to erect, install, enlarge, alter, repair, remove, convert or replace any electrical, gas, mechanical or plumbing system…" must obtain a permit before the work is started.
This includes nearly any construction-related project on both residential and non-residential property. Please refer to individual subsections of this website for requirements and fees applicable to specific activities or projects. A separate Fee Schedule is also available.
Inspections
Upon issuance of a permit, one or more inspections will be required before the work can be considered complete and in compliance with the applicable codes and ordinances. Please refer to Inspection Requests for more information.
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How to Apply for a Permit
Register as a new contractor via our Citizen Access Portal. Once registered, you will receive an email with a login. After logging in, apply for a permit using your online portal access.
Permit applications are received in the Permit & Inspection Services Department at City Hall, 203 E. Wheatland Road, Duncanville, TX 75116. For more information, call the department at (972) 780-5000 or email [email protected], Monday through Friday between the hours of 8:00 AM and 5:00 PM.