Window Replacement in Dallas, Texas: Permits and Rules

A homeowner in Dallas should plan on three local checks before replacing windows: whether the job needs a building permit from the City of Dallas, whether the company doing it is registered with the city, and whether the house sits in a historic or conservation district. The city's own pages answer each of these. Permit-exempt work in Dallas includes adding storm windows, but interior remodeling is exempt only when it does not change exterior doors or windows (Building Inspection FAQs) ². Applications go through DallasNow, the city's online permitting system ¹⁷.

The glass matters as much as the paperwork. Dallas County is in ENERGY STAR's Southern climate zone, where the criteria cap how much solar heat the glass lets in ¹¹¹². At the state level, the Texas Department of Licensing and Regulation's list of regulated programs has no window or general home-improvement contractor program (TDLR) ¹⁵, which the Texas page explains, so the local checks below carry more weight.

Do you need a permit to replace windows in Dallas?

The City of Dallas Development Services Department handles residential permits. Its residential page describes a permit as the city's approval to start construction on your home, and it names DallasNow as the online portal for all permitting services (Residential permitting) ¹.

The city's FAQ does not have a line that says "window replacement needs a permit," but two of its answers point the way. Under "When is a permit required?" it says a person shall not "alter, repair, replace" a structure "without first obtaining a MASTER PERMIT from the building official." It also says that "generally, a building permit is needed for work involving structural elements of a building," and its partial list of exempt work includes "adding of storm windows, shutters, trim, awnings, siding, rain gutters, or insulation," along with interior remodeling of single- and two-family homes that "does not add floor area or change exterior doors or windows" (Building Inspection FAQs) ². The same page says the exceptions apply differently in historic, conservation and planned development districts ².

Two city documents show how the city handles a window job that goes through a permit:

• The remodel checklist. For one- and two-family remodels, the city asks for a "schedule of any doors and windows being replaced," and says building elevations may be required for new openings or where the size of an opening changes (Remodel/renovation checklist) ³.
• The energy code form. The city's form on residential remodels and the energy code lists "replacing existing windows and/or doors of same size" and "adding new exterior doors and windows" as items to mark, and says that if an item applies, you may need to hire a third-party energy code provider, with an Energy Code Compliance Certificate provided before the first requested inspection. For same-size replacement, the form notes that an energy code (EC) trade is not required (Remodels and the energy code) ⁴. The form takes its definitions from the 2021 International Energy Conservation Code ⁴.

The practical answer: ask Development Services, or check in DallasNow, whether your exact job needs a permit, and ask each installer who pulls it. Changing the size of an opening is the case where the checklist asks for more drawings ³. The article on whether you need a permit to replace windows explains why rules vary from city to city.

Who may do the work in Dallas

Dallas registers contractors at the city level. The remodel checklist states that "permits may only be issued to a registered contractor with the proper licenses and/or other credentials" (Remodel/renovation checklist) ³. The city's contractor registration form says a general contractor includes, among others, a residential general contractor (Contractor registration form) ⁶, and the DallasNow page links a guide to general contractor registration (DallasNow) ⁷.

Homeowners have an exemption. The city's homeowner exemption form says homeowners may act as their own contractors on their homestead without registering, as long as they do the work themselves and no one is paid to help. It lists the kinds of projects that qualify for a homeowner's permit, such as interior remodeling and roofing; window replacement is not named, so ask the city whether your window job qualifies (Homeowner's exemption) ⁵. The FAQ adds that "a homeowner may perform general building work on their own property after obtaining all of the proper permits" ².

Questions worth asking each installer:

• Is your company registered as a contractor with the City of Dallas, and under what name?
• Will you pull the permit, and will your name be on it?
• Does any part of the job need a trade the city or state licenses, such as electrical work? The FAQ says electrical work must be done by an electrician who holds a license, with a narrow homeowner exception (Building Inspection FAQs) ².

The guide on how to choose a window installer covers references, contracts and the rest of the vetting.

Historic and conservation districts

Window work in a Dallas historic district has its own review. Under the Dallas City Code, a person "shall not alter a site within a historic overlay district, or alter, place, construct, maintain, or expand any structure on the site without first obtaining a certificate of appropriateness" under the district's preservation criteria (Dallas City Code Sec. 51A-4.501) ⁹.

The Office of Historic Preservation says certificates of appropriateness are required before exterior work can begin; minor changes generally need only staff approval, while substantial alterations need approval of the Landmark Commission. The page says these applications are made through DallasNow effective May 5, 2025 (Historic preservation applications) ⁸. The remodel checklist adds that a certificate from the Landmark Commission must be issued first for exterior projects in a Historic Overlay District, including windows, and that a Conservation District Work Review Form must be attached to the permit application in a Conservation District ³.

For window replacement in a landmark district, the city publishes a window survey. Its instructions ask for photos of every window, its material and condition, and the specification sheet of the proposed window, and they note that replacing original wood windows may require more photos as evidence that they cannot be repaired (Window survey instructions) ¹⁰. Each district's own ordinance sets its criteria, so the window that fits one district may not fit another ⁹. A homeowners association may have its own rules too; check them, though they are not city law.

Climate and glass for Dallas

ENERGY STAR's county list puts Dallas County in the Southern zone (ENERGY STAR climate zone finder) ¹². In that zone, an ENERGY STAR window has a U-factor of 0.32 or less and a solar heat gain coefficient (SHGC) of 0.23 or less, plus an air leakage limit of 0.3 cubic feet per minute per square foot (ENERGY STAR criteria) ¹¹. The list works by ZIP code, and two Dallas ZIP codes whose primary county is Collin or Denton, 75252 and 75287, are listed in the South-Central zone, where the U-factor limit is 0.28 and the SHGC limit is also 0.23 ¹¹¹².

The weather explains why SHGC leads. National Weather Service normals for Dallas/Fort Worth for 1991 to 2020 show an annual mean temperature of 66.6°F, about 20 days a year at 100°F or more, about 29 freezes a season and 37.01 inches of precipitation a year (NWS Fort Worth normals) ¹³. Long, hot summers make solar heat gain through west- and south-facing glass the main load, while the winter freezes still give U-factor a role. The articles on low-E glass and energy-efficient windows explain how to read both numbers on the NFRC label.

What window replacement costs

The national cost surveys do not publish a figure for Dallas, so this page does not quote a local price. Nationally, Fixr reports a range of $450 to $1,200 per window, with an average of about $800, in data updated January 21, 2026 ¹⁴. The window replacement cost guide sets several national surveys side by side and explains why they differ.

Getting quotes

Ask every installer for a written quote that names the window series, the NFRC-rated U-factor and SHGC, full-frame or insert installation, who pulls the permit and, in a landmark district, who prepares the certificate of appropriateness. The guide on how to compare window quotes shows how to line them up. When you are ready, you can compare quotes from window installers who serve Dallas.

About these figures

• ¹ Official record: City of Dallas residential permitting page (DallasNow as the online permitting portal), checked October 26, 2026.
• ² Official record: City of Dallas Building Inspection FAQs (master permit rule, partial list of permit-exempt work, homeowner and electrical work), checked October 26, 2026.
• ³ Official record: City of Dallas remodel/renovation checklist (window schedule, district requirements, registered contractor rule; revised January 23, 2014), checked October 26, 2026.
• ⁴ Official record: City of Dallas form on residential remodels and the energy code, revised May 31, 2024 (window items, third-party provider, compliance certificate, EC trade not required for same-size replacement, 2021 IECC definitions), checked October 26, 2026.
• ⁵ Official record: City of Dallas homeowner's exemption from contractor registration (homestead, no paid help, eligible project list; revised January 1, 2018), checked October 26, 2026.
• ⁶ Official record: City of Dallas application for contractor registration (general contractor categories), checked October 26, 2026.
• ⁷ Official record: City of Dallas DallasNow page (permitting portal, general contractor registration guide), checked October 26, 2026.
• ⁸ Official record: City of Dallas Office of Historic Preservation applications page (certificates of appropriateness, staff and Landmark Commission review, DallasNow from May 5, 2025), checked October 26, 2026.
• ⁹ Official record: Dallas City Code Sec. 51A-4.501 (certificate of appropriateness in historic overlay districts), checked October 26, 2026.
• ¹⁰ Official record: City of Dallas window survey instructions, checked October 26, 2026.
• ¹¹ Official record: ENERGY STAR Version 7.0 residential window criteria (Southern zone U-factor 0.32 and SHGC 0.23, South-Central U-factor 0.28 and SHGC 0.23, air leakage 0.3 cfm per square foot), checked October 26, 2026.
• ¹² Official record: ENERGY STAR county climate zone list (Dallas County in the Southern zone; Dallas ZIP codes 75252 and 75287 in South-Central), checked October 26, 2026.
• ¹³ Official record: National Weather Service 1991-2020 normals for Dallas/Fort Worth (66.6°F annual mean, 20 days of 100°F or more, 29 freezes, 37.01 inches of precipitation), checked October 26, 2026.
• ¹⁴ Reported: Fixr national window replacement cost range ($450 to $1,200 per window, average about $800, updated January 21, 2026), checked October 26, 2026.
• ¹⁵ Official record: Texas Department of Licensing and Regulation home page (list of regulated programs, with no window or general home-improvement contractor program), checked October 26, 2026.