Window Replacement in Houston: Prices per Window, Glass for Gulf Coast Heat, and the Permit and Windstorm Rules

What window replacement costs in Houston

Our table starts from national installed prices and multiplies them by 0.82, the construction cost factor the U.S. Army Corps of Engineers publishes for Texas. A window that costs $1,000 to put in at the US average comes to about $820 here.

Estimates for 2026, including labor and standard parts. Houston prices use the Texas statewide construction cost factor of 0.82 (US average = 1.00) from the U.S. Army Corps of Engineers Area Cost Factors, which have no separate Houston entry. Your quote depends on access, materials and the condition of the home.

These rows price an insert replacement, where the new unit sits inside the old frame. Taking the old frame out to the studs is called full-frame replacement, and our cost estimator adds about 30% for it, so a typical $535 vinyl window becomes roughly $695. The extra money is well spent when a sill is soft or the wall under the window has water stains, because the crew can repair and flash the opening before the new unit goes in.

Angi's local figures land in the same range. It reports an average Houston window job of $6,078, with most owners spending $3,328 to $9,619, an average of $750 per window, and 8 to 15 windows in most homes. Height moves the price: Angi lists $300 to $700 for a ground-floor window, $700 to $1,200 or more for an upper-floor or hard-to-reach one, and $100 to $300 per standard window for labor alone (Angi).

Things that push a Houston quote up:

• Impact glass. The impact option in our cost estimator adds 55%, which puts the typical vinyl window near $825, or about $1,050 for a full-frame job. HomeGuide's national range for hurricane impact windows is $400 to $1,200 per window installed (HomeGuide).
• Second-floor windows. The cost estimator adds 10%, and Angi notes that upper floors take extra labor, equipment and safety measures.
• Bay and oversized units. A vinyl bay window runs $920 to $3,150 at Houston prices.
• Lead-safe work in a house built before 1978, where the crew has to contain dust and clean up under EPA rules.
• Paperwork: the City repair permit, a windstorm inspection near the coast or a historic district review.

Enter your window count, sizes and ZIP code in the cost estimator below, or open the full window cost estimator. National prices and a comparison of window styles are in our window replacement cost guide.

Frames that hold up in Houston

ENERGY STAR describes fiberglass frames as strong, durable and well insulated, and vinyl as low maintenance with good thermal insulation. Wood insulates well and is "generally favored in historical neighborhoods," often clad outside in aluminum or vinyl. Aluminum frames usually include a thermal break to cut the heat that moves through the metal (ENERGY STAR). Our guides cover each frame in more depth: vinyl, fiberglass, wood and aluminum.

New windows rarely pay for themselves when a Houston house sells. The 2025 Cost vs. Value report priced replacing ten 3 by 5 foot double-hung windows with low-E vinyl units at $20,991 in Houston and found they added $14,677 in resale value, 69.9% of the cost. The wood version cost $26,097 and returned 63.7%, and nationally the vinyl job recouped 75.5% (Cost vs. Value, Houston). The rest comes back as lower cooling bills and a quieter house.

Glass for Gulf Coast heat

Bush Intercontinental averages 111.3 days a year at 90°F or hotter, with August highs of 94.9°F and lows of 75.4°F, according to NOAA's 1991 to 2020 normals (NOAA NCEI). Here a window's main job is keeping the sun's heat out, and two numbers on the National Fenestration Rating Council label tell you how well it does that:

• The solar heat gain coefficient (SHGC) is the share of the sun's heat that gets through the glass. Lower is better in Houston.
• The U-factor measures how much heat moves through the whole window. Lower is better here too.

Harris, Fort Bend, Montgomery, Galveston and Brazoria counties are all in IECC climate zone 2, which ENERGY STAR calls its Southern zone (Building America Solution Center).

Sources: Houston Permitting Center, CE-1059, Texas SECO, 2015 IECC Texas guide, ENERGY STAR Version 7.0.

The Texas compliance guide for the 2015 code says its window limits cover replacement windows as well as new homes, and that a window with no NFRC label is assigned a default rating. Leave the label sticker on each window until the inspector has seen it. Our energy-efficient windows guide explains how to read it.

There is no federal tax credit to count on. The credit that covered energy-efficient windows does not apply to windows placed in service after December 31, 2025 (IRS). Sugar Land owners have a local program instead. The city's Great Homes Update Program reimburses 10% to 50% of the cost of exterior improvements to single-family homes, up to $10,000. Windows were among its most popular projects in fiscal 2026, and the city says applications may reopen January 1, 2027 (City of Sugar Land).

Do you need a permit to replace windows in Houston?

Yes, inside the City of Houston. The Houston Permitting Center's Residential Repair Permit covers replacing building elements with matching or equivalent materials, and its Residential Repair Spec List, form CE-1059, names the job: "Replace windows (Includes window frame and sash.)" The same form says that once a required building element is removed, its replacement has to meet current code, and that changing an existing egress configuration does not count as a minor repair (CE-1059).

Sources: Residential Repair Permit, 2026 fee schedule. Structural Inspections takes reinspection calls at 832-394-8840.

Two more City rules can apply. A house in the floodplain may need a floodplain development permit even for work that needs no building permit, so call the Floodplain Management Office at 832-394-8854 first (Residential Permitting 101). Near the airports, the code's airport sound appendix applies wherever a City airport land use permit is required, and it asks for windows rated at least STC 40 (Houston amendments to the 2021 IRC).

Outside the city limits, Sugar Land, Pearland, Pasadena, Katy and Conroe run their own building departments. For window replacement in Katy, first check whether the address is inside the City of Katy or in an unincorporated area served by the county. Pearland enforces the 2021 residential and energy codes and asks contractors to register and file a certificate of insurance with at least $300,000 in general liability before they can pull a permit (City of Pearland). In unincorporated areas such as Cypress, Harris County's engineer requires a permit for any development, a term that covers buildings, fill and paving (Harris County Engineering).

The Woodlands handles this through its covenants. The 2024 Residential Development Standards say that "when replacing windows, careful consideration must be given to type and style and compatibility with the design of the home." Tinted glass is allowed and mirrored or foil-backed glass is not, security bars are not permitted, and screens must be brown, black, bronze or charcoal gray. Storm windows and screens that match the house are pre-approved, while other window work goes to the Plan Review Committee or its staff (The Woodlands Township).

Do Houston windows need to be impact-rated?

That depends on the address. Houston's residential code keeps the rule that exterior glass in a windborne debris region must be protected, either by impact-rated windows or coverings that pass the ASTM E1886 and E1996 large missile test, or by precut 7/16 inch wood structural panels with permanent anchors. The City sets the design wind speed for each property with the ASCE 7 hazard tool and treats homes as Risk Category II (Houston IRC on UpCodes, Houston amendments). Pearland's published design criteria show how much this varies across one city: 150 mph for its Harris and Fort Bend county areas, and a Texas Department of Insurance figure for its Brazoria County side (City of Pearland).

The code also covers window installation. Every replacement window has to resist the wind load for its location, impact-rated or not, and the code calls for windows tested by an independent lab and labeled to AAMA/WDMA/CSA 101/I.S.2/A440, installed by the manufacturer's written instructions, and anchored the way the manufacturer specifies to reach the rated design pressure (Houston IRC R609). Ask each installer for the design pressure of the window they are quoting and how they plan to anchor it.

Galveston, Brazoria County and the bayfront cities

The Texas Department of Insurance runs a windstorm program in 14 coastal counties, Galveston and Brazoria among them, and in the parts of La Porte, Morgan's Point, Pasadena, Seabrook and Shore Acres inside city limits and east of State Highway 146 (TWIA). Homes there that buy wind coverage from the Texas Windstorm Insurance Association usually need a certificate of compliance:

• A WPI-8, for work inspected while it is underway by a TDI-appointed engineer or a TDI inspector.
• A WPI-8-E, for finished work inspected by a Texas licensed engineer, which TDI says can cost more.

Since April 1, 2026, these certificates follow the 2024 IRC, and TDI says most of the catastrophe area now lies in the windborne debris region (TDI). TDI's list of work that needs no inspection includes replacing window glass, without the frames, when the area is less than 10% of that side of the house (TDI). A full window replacement is an alteration, so plan for the inspection. TDI requires a label on each window showing the manufacturer, the model and the design pressure, and an impact-rated unit also lists the missile level it passed (TDI product evaluation FAQ). On new single-family homes, the City of Galveston requires impact-resistant windows unless the openings get coverings that meet the 2021 IRC (City of Galveston). TDI's windstorm line is 800-248-6032, and our impact windows guide covers the test standards and shutter options.

Bedroom escape windows, fall protection and safety glass

Escape windows

Every bedroom needs a window or door a person can climb out through in a fire. Under the Houston code, the opening needs at least 5.7 square feet of clear space (5 square feet on the ground floor), a clear height of at least 24 inches and a clear width of at least 20 inches, with the sill no more than 44 inches above the floor. Houston adds that the opening has to lead to a street, or to a yard or court at least 36 inches wide that reaches one. A replacement window is excused from the size rules if it is the manufacturer's largest standard size that fits the existing opening and opens the same way or wider (Houston IRC R310). Trading a bedroom slider for a smaller fixed window does not qualify.

Second-floor sills

Two-story houses bring a fall rule. Where the bottom of an operable window's opening sits less than 24 inches above the floor and more than 72 inches above the ground outside, the window must either stop a 4 inch sphere from passing through or carry a fall prevention device that meets ASTM F2090. On a bedroom escape window, that device has to release so the window can still open fully (R312.2, same source).

Safety glass

Tempered or laminated glass is required in three common spots: a pane larger than 9 square feet with its bottom edge under 18 inches from the floor and its top edge over 36 inches, when someone can walk within 36 inches of it; glass whose bottom edge is less than 60 inches above the floor near a tub or shower; and glass less than 36 inches above stairs and landings (R308.4, same source). The installer should mark those windows on the order. The code does exempt window replacement from the smoke alarm upgrade that other permitted repairs set off (R314.2.2).

If you rent the house out, Texas law also requires a window latch on every exterior window while a tenant lives there, at the landlord's expense (Texas Property Code 92.153).

Historic districts in Houston and Galveston

Houston had 23 historic districts, 305 landmarks and 213 protected landmarks as of January 2026 (City of Houston). The Office of Preservation lists "replacement of doors, windows, siding" visible from the street among the changes that need a Certificate of Appropriateness, while storm windows, window screens and work not visible from the street are exempt (Office of Preservation). Ordinary repair needs no certificate, but the City states that repair "does not include replacement of historic material" (Certificate of Appropriateness).

The application asks for:

• The City's window worksheet: labeled photos of every window, a schedule of the existing units (material, lite pattern, style, size, inset or flush, original or replacement), a description of the damage, and the maker's specifications for the new windows (window worksheet).
• New windows that follow the City's historic window standard for new construction and replacement: the sash set back at least 1 3/4 inches from the exterior casing, in a 1-over-1 pattern divided equally (window standard).
• A 2026 fee of $152.08 for a restoration or alteration application (COA fees).

Complete applications are due by noon 22 days before the commission's monthly meeting. Approved projects are eligible for a 50% discount on building permit fees, and work done without a certificate can bring fines, a stop work order and an order to restore what was removed. Call the Office of Preservation at 832-393-6556 before you order windows. In Galveston, the Landmark Commission reviews exterior work in local districts such as the East End (City of Galveston).

Recorded deed restrictions are the other thing to check. Houston has no zoning, and the City's repair form notes that a permit does not authorize work that violates deed restrictions. The Deed Restriction Hotline is 832-393-6333 (City of Houston).

Lead paint around old window frames

Census data shows that 47.0% of homes in the City of Houston and 56.7% in Pasadena were built before 1980, against 11.4% in Pearland and 7.7% in The Woodlands (Census Reporter, ACS). Texas has no lead renovation program of its own, so the EPA's Renovation, Repair and Painting rule applies directly. Window replacement in a pre-1978 home is always covered work, with no small-job exemption. The firm must be EPA certified, give you the Renovate Right pamphlet before starting, and contain and clean up the dust around each opening (EPA). Lower-income households in the city can call the Houston Health Department's Lead-Based Paint Hazard Control Program, which identifies, removes or stabilizes lead hazards at no cost, at 832-393-5141 (Houston Health Department). If the trim and siding are getting new paint too, see our Houston painting guide.

Areas we cover

GOLDGCP window installers work across the Houston metro:

• Houston and Pasadena
• Pearland and Sugar Land
• Katy and Cypress
• The Woodlands and Conroe

Type your ZIP code below to see window prices for your neighborhood and the installers who work there.