Window Replacement in Fort Worth, Texas: Permits and Rules

In Fort Worth, replacing a window is permitted work. The city's residential permitting page says plainly that "replacement or addition of exterior doors, windows or burglar bars requires a building permit," and that the permit must be pulled by a registered building contractor or by an owner who lives in the home as a homestead (Residential permitting) ¹. For a historic property, a certificate of appropriateness comes before that permit (Historic preservation) ⁴.

So a homeowner here has four things to settle before work starts: the permit, the contractor's city registration, any historic district review, and glass that suits a hot climate. Tarrant County is in ENERGY STAR's Southern climate zone, and the city's own remodel packet sets energy limits for replacement windows ²⁸. 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) ¹¹, which the Texas page explains, so these city checks carry the weight.

Do you need a permit to replace windows in Fort Worth?

Yes, according to the City of Fort Worth Development Services Department. Its residential page says permits are required for work that "changes, moves or repairs walls, floors, ceiling, windows, doors, electrical, mechanical or plumbing," and it names exterior windows directly in the permit list. The work it treats as exempt is "cosmetic" remodeling, such as floor or wall coverings, cabinets and counters, and plumbing fixture replacement (Residential permitting) ¹. The page does not carve out an exception for same-size replacement.

The page says "all permits may be applied for online," and links to the city's portal ¹; the city calls that portal Accela Citizen Access, its online permitting system (Historic preservation) ⁴.

The city's residential remodel packet, dated May 27, 2026, shows what a window job submits (Residential remodel packet) ²:

• A window count. Under "Windows," the packet asks you to "indicate which windows are being replaced and number of windows" ².
• Sizes on the floor plan. Where a floor plan is part of the job, window and door sizes must be marked or listed in a schedule ².
• The energy limits. The packet's "City of Fort Worth Energy Compliance" sheet lists prescriptive requirements for windows: a maximum U-factor of 0.35 and a maximum SHGC of 0.25 ².
• The contractor's number. The application form has a line for the "City of Fort Worth Contractor Registration #" and the contractor's business name ².

Changing the size of an opening, or adding one, is a larger job than a like-for-like swap, so ask Development Services how your exact project should be filed. The article on whether you need a permit to replace windows explains why these rules differ from city to city.

Who may do the work in Fort Worth

Fort Worth registers contractors at the city level. Its contractor registration page says any firm, business, individual or organization obtaining a permit under the city's building, mechanical, plumbing or electrical codes must have a valid Contractor Registration on file with Development Services. A building registration needs the completed application and a copy of a valid driver's license, the page lists an annual fee of $168.75 for it, and registrations expire one year from the date of issuance (Contractor registration) ³. Mechanical, electrical and plumbing registrations each require the matching state license ³.

Homeowners have an exemption. The registration page exempts "the property owners of single-family residences when performing the work on their homestead property" ³, and the residential page describes a homestead permit as work on a building the applicant owns and occupies as a primary residence, shown by a homestead exemption from the appraisal district ¹.

The city's registration page does not offer a public search of registered contractors. It lists Development Services at 817-392-2222 for questions (Contractor registration) ³. Questions worth asking each installer:

• Is your company registered with the City of Fort Worth, and what is the registration number that will go on the permit application?
• Will you pull the permit, and will your company's name be on it?
• Does any part of the job need a separate trade registration, such as electrical work near the opening?

You can confirm any answer with Development Services. The guide on how to choose a window installer covers references, contracts and the rest of the vetting.

Historic districts and landmark review

Window work on a historic property in Fort Worth starts with the preservation office, not the permit desk. The city's historic preservation page says that before applying for a building permit for exterior alterations, an owner must first obtain a certificate of appropriateness, and it lists windows among the work this covers (Historic preservation) ⁴.

Most cases do not go to the Historic and Cultural Landmarks Commission. The page says certificates "can be approved administratively by staff" or by the commission, that most cases are handled by staff, and that commission review is needed only for a short list of case types, among them new construction, demolition, waivers from the design guidelines and historic designation; the commission also hears appeals of staff decisions ⁴. Applications go through Accela Citizen Access, and staff work each case with the applicant ⁴.

Local district design guidelines are adopted by the City Council for the commission's review of applications, and where a district has none, the Secretary of the Interior's Standards for the Treatment of Historic Properties apply ⁴. The city's historic districts page lists the districts, among them Fairmount, Morningside, Mistletoe Heights, Elizabeth Boulevard and the Stockyards, with links to guidelines for most of them; the Fairmount standards are marked as a draft until the City Council adopts them, and a few districts link only a survey report (Historic districts) ⁵.

The Historic Morningside guidelines show the kind of window rules a district may set. They say to "replace windows only when they cannot be feasibly refurbished," to match the dimension and profile of the original so the opening does not change size, and to use replacement windows of a similar style; they list filling or enlarging original openings and unpainted metal storm windows as not appropriate (Historic Morningside guidelines) ⁶. Other districts word this differently, so read your own district's guidelines. A homeowners association may have its own rules too; check them, though they are not city law.

Climate and glass for Fort Worth

ENERGY STAR's county climate zone list puts Tarrant County in the Southern zone, and every ZIP code the list names as Fort Worth has Tarrant as its primary county (ENERGY STAR climate zone finder) ⁸. 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) ⁷. Those numbers sit inside the city's own limits of 0.35 and 0.25 from the remodel packet ².

The weather explains why SHGC leads here. National Weather Service normals for Dallas/Fort Worth for 1991 to 2020 show an annual mean temperature of 66.6°F, an average of 20 days a year at 100°F or more, 29 freezes a season and 37.01 inches of precipitation a year (NWS Fort Worth normals) ⁹. Long, hot summers make the sun through west- and south-facing glass the main load, while the winter freezes keep U-factor in play. 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 Fort Worth, 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 ¹⁰. 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, the company's Fort Worth registration number, who pulls the permit and, in a historic district, who prepares the certificate of appropriateness application. 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 Fort Worth.

About these figures

• ¹ Official record: City of Fort Worth residential permitting page (window replacement needs a building permit, cosmetic exemptions, online applications, registered contractor or homestead permit), checked October 26, 2026.
• ² Official record: City of Fort Worth residential remodel packet dated May 27, 2026 (window count and sizes, energy compliance maximum U-factor 0.35 and SHGC 0.25, contractor registration number), checked October 26, 2026.
• ³ Official record: City of Fort Worth contractor registration page (who must register, homestead exemption, $168.75 annual building registration fee, one-year term, 817-392-2222), checked October 26, 2026.
• ⁴ Official record: City of Fort Worth historic preservation page (certificate of appropriateness before exterior permits, windows listed, staff and Historic and Cultural Landmarks Commission review, district guidelines, Accela Citizen Access), checked October 26, 2026.
• ⁵ Official record: City of Fort Worth historic districts page (list of districts, guidelines for most, Fairmount draft), checked October 26, 2026.
• ⁶ Official record: Historic Morningside District Guidelines (window repair before replacement, matching dimension and profile, similar style, items not appropriate), checked October 26, 2026.
• ⁷ Official record: ENERGY STAR Version 7.0 residential window criteria (Southern zone U-factor 0.32 and SHGC 0.23, air leakage 0.3 cfm per square foot), checked October 26, 2026.
• ⁸ Official record: ENERGY STAR county climate zone list (Tarrant County and its Fort Worth ZIP codes in the Southern zone), checked October 26, 2026.
• ⁹ 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.
• ¹⁰ Reported: Fixr national window replacement cost range ($450 to $1,200 per window, average about $800, updated January 21, 2026), checked October 26, 2026.
• ¹¹ 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.