San Antonio Window Replacement in 2026: Permit, Historic Rules, Rebates, Glass

What San Antonio's permit form says about windows

Replacement windows san antonio owners start at the City of San Antonio Development Services Department (DSD), which publishes a Residential Repair Permit Application that addresses window work directly. The form's repair-information line states: "Windows being replaced (No permit required for broken glass replacement)." This language comes from the Internet Archive capture dated 20 May 2026; the live docsonline.sanantonio.gov and sa.gov pages returned HTTP 403 when checked on 22 October 2026. Beyond the windows line, the form carries a few conditions.

Mechanical, electrical and plumbing work needs separate permits. A framing inspection is required if framing is performed, followed by a final inspection. The permit belongs to the applicant and is valid for six months from issuance, and the scope submitted is the only work allowed.

The line on the Residential Repair form

The form lists "Windows being replaced" among the repair items an application covers, and the parenthesis next to it exempts broken glass replacement. Replacing a pane of broken glass alone needs no permit by that wording. The form says nothing about a unit swapped in the same opening, so a homeowner who wants certainty asks the Development Services office before signing.

The form also states it is subject to an additional processing fee and a 6% surcharge of the total permit fee. A "Homeowners Only" block requires the owner to attest they own and will own (occupy or rent) the residence for 12 months after completion, per City Code 10-115(a)(1), and to take responsibility for all inspections.

Over the counter, by owner or by contractor

The DSD "Residential Permits" page (Wayback capture 9 September 2026) lists "Minor Repairs (Windows, Doors, Walls, Siding and Floors)" with required document "Proof of Ownership" and notes "Permit Issued over the counter." Home Improvement Contractors registered with the City may obtain certain permits on behalf of the homeowner. The page adds that, for safety, a homeowner must use licensed trade contractors for new electrical, plumbing and HVAC components. The page also mentions a "No Permit Required List," which we did NOT open.

What we could not read

We did NOT read the fee table, so this page gives no permit price. The "No Permit Required List" the DSD page mentions stayed unopened too, so a case it covers could differ from what we describe.

Seven questions to ask before you sign

Before signing a window replacement contract, ask the contractor these seven questions to confirm compliance with San Antonio permit and historic rules.

1. Will you obtain the residential repair permit from the City Development Services Department and provide the required proof of ownership? The DSD Residential Repair Permit Application says a permit is required for window replacement (except broken glass), and the DSD Residential Permits page says proof of ownership is required for minor repairs permits.
2. If the work includes framing, will you schedule the required framing inspection and final inspection? The DSD Residential Repair Permit Application says if framing is performed a framing inspection is required, then a final inspection.
3. Are you registered with the City as a Home Improvement Contractor authorized to pull permits on my behalf? The DSD Residential Permits page says Home Improvement Contractors registered with the City may obtain certain permits on behalf of the homeowner.
4. Will you use licensed trade contractors for any new electrical, plumbing, or HVAC components as the City requires? The DSD Residential Permits page says for safety a homeowner must use licensed trade contractors for new electrical, plumbing and HVAC components.
5. Is my property in a historic zoning overlay (H, HS, HE, or HL) that requires a Certificate of Appropriateness before exterior window work begins? The OHP Before Getting Started page says all exterior modifications for properties with a historic zoning overlay require a Certificate of Appropriateness, and that properties zoned H, HS, HE or HL are subject to OHP review.
6. If a Certificate of Appropriateness is needed, will the replacement windows meet OHP standards for primed and painted wood exterior finish, meeting rail and stile dimensions, clear glass, block frame without nailing fins, and no alteration of opening sizes? The OHP Windows: Repair, Replacement & New Construction policy guide says approved full replacements must feature primed and painted wood exterior finish, meeting rails no taller than 1.25 inches, stiles no wider than 2.25 inches, clear glass, block frame without nailing fins, and opening sizes not altered to fit stock sizes.
7. Does your quote list any rebate or discount by naming a specific CPS Energy or federal program in writing? Searches for a window replacement program san antonio or a city of san antonio window replacement program find mostly ads and the utility pages. The CPS Energy STEP page lists no rebate for window replacement, and the IRS Energy Efficient Home Improvement Credit page says the credit expired December 31, 2025, so a quote line called a rebate must name the program in writing.

If your address is in a historic district

The Office of Historic Preservation (OHP) "Before Getting Started" page (Wayback capture 2 April 2025) states that per the Unified Development Code (UDC), all exterior modifications and repairs for properties with a historic zoning overlay require a Certificate of Appropriateness (COA). This applies to both commercial and residential properties, including side yards, rear yards, and areas not readily visible from the street. Historic designation is a zoning overlay: properties zoned H, HS, HE, or HL are subject to OHP review.

The owner can look up the address on the city's Explorer Map. If work is interior only with no work on exterior windows or doors, no OHP approval is needed, but a DSD permit may still be required.

The COA comes before the contractor

The OHP page warns that any work started without a COA may result in a Stop Work Order and a $500 post-work application fee. In more serious cases, a municipal case may be filed. Minor projects can usually be approved by OHP staff with a COA; larger ones go to the Historic and Design Review Commission (HDRC).

Applications are due 19 days before the meeting and COAs are usually issued within 10 days. The page's case-manager lists name districts including King William, Monte Vista, Tobin Hill, Dignowity Hill, Lavaca, Woodlawn Lake, Olmos Park Terrace, Fulton Avenue, and Alamo Plaza. We do NOT know which individual addresses are inside an overlay.

What the Windows Policy Guide asks of a replacement

The OHP "Windows: Repair, Replacement & New Construction" policy guide (September 2022; Wayback capture 3 April 2025) states: "If full window replacement is approved, the new windows must feature primed and painted wood exterior finish. Clad, composition, or non-wood options are not allowed unless explicitly approved by the commission." Replacement standards include meeting rails no taller than 1.25 inches; stiles no wider than 2.25 inches; top and bottom sashes equal in size unless approved; at least 2 inches of depth between the front face of the window trim and the front face of the top sash. The guide says: "Replacement windows should feature clear glass. Low-e or reflective coatings are not recommended for replacements"; no faux divided lights with an interior grille; "Replacement windows should be supplied in a block frame and exclude nailing fins"; opening sizes should not be altered to fit stock sizes before approval.

The guide's own repair test

The guide states: "In most cases, window repair is not only the more affordable solution upfront, but offers a much greater return on investment than replacement." The guide states that windows account for only about 25% of heat gain and loss and names poorly insulated walls and attics as the greater culprit; that is the Office of Historic Preservation's statement, not ours. It recommends weatherstripping, storm windows, shades, shutters, screens, and interior film. The guide also notes that door-to-door window salesmen have been reported in historic districts.

Two addresses, two paths

Home window replacement san antonio is not one process. The steps a homeowner follows depend on whether the property carries a historic zoning overlay and whether it sits inside San Antonio city limits. The documents below describe the order of actions for two hypothetical owners. No prices, dates, or company names are invented.

Owner 1: no historic overlay, inside city limits

The DSD Residential Permits page says DSD issues residential building permits for property within the City limits, so the owner first confirms with DSD that the address is inside them. The DSD Residential Repair Permit Application form includes a repair-information line: "Windows being replaced (No permit required for broken glass replacement)". The DSD page lists the Minor Repairs application with Proof of Ownership as its required document.

The DSD page says Home Improvement Contractors registered with the City may obtain certain permits on behalf of the homeowner. The form states the permit belongs to the permit applicant and is valid for 6 months from the date of issuance. If framing is performed, a framing inspection comes before the final one.

The ENERGY STAR V7 ZIP table puts Bexar County ZIP codes in the Southern zone, so the whole-unit label is compared with a U-factor of 0.32 or lower and an SHGC of 0.23 or lower. A ZIP code can cross a county line, so the owner checks the ZIP in the table.

Owner 2: address carries an H overlay

The OHP Before Getting Started page says historic designation is a zoning overlay: properties zoned H, HS, HE, or HL are subject to OHP review. The owner looks up the address on the city's Explorer Map to confirm the overlay. The page says all exterior modifications and repairs for properties with a historic zoning overlay require a Certificate of Appropriateness (COA).

The owner applies for the COA before any work starts. Minor projects can usually be approved by OHP staff with a COA; larger ones go to the Historic and Design Review Commission (HDRC) with applications due 19 days before the meeting. The OHP Windows guide says if full window replacement is approved, the new windows must feature primed and painted wood exterior finish.

Clad, composition, or non-wood options are not allowed unless explicitly approved by the commission. The guide's other replacement standards, listed in the previous section, cover the sash proportions, the depth of the recess, the glass and the install method. The COA is a separate approval from the DSD permit: the OHP page says that even interior-only work may still need a DSD permit, and the pages we read do not set the order of the two, so the owner asks both offices which comes first. The OHP page warns that any work started without a COA may result in a Stop Work Order and a $500 post-work application fee.

What both owners should ask for in writing

Both owners should request a written quote that names the permit applicant and states who will pull the DSD permit. The quote should confirm whether a COA is required and, if so, include the COA case number or a line stating the contractor will obtain it. For Owner 2, the quote should specify primed and painted wood exterior finish and the dimensional standards from the OHP Windows guide.

Both quotes should list the whole-unit NFRC U-factor and SHGC values and note the ENERGY STAR zone for the property's ZIP code. Any line labeled rebate or discount must name the program in writing; the CPS Energy STEP page lists no window replacement rebate, and the IRS page shows no federal window credit for a 2026 install. The quote should itemize exclusions such as screens priced separately and note that electrical, plumbing, or HVAC work requires separate licensed trade permits per the DSD form.

What CPS Energy pays for, and what it does not

CPS Energy's STEP page (cpsenergy.com/STEP, read live 22 October 2026) lists residential rebates. The list includes WiFi Thermostat Rewards, Home Energy Rebate for Central Air, Heat Pump, "Window Unit", Pool Pump, Attic Insulation, Home Energy Assessment, New Home Construction, High Performance A/C Tuneup, Cool Roof, retail discounts, and Casa Verde. No line item for replacing windows appears on any of these CPS pages.

The STEP list: a window unit is an air conditioner

The "Window Unit" rebate is for a window air conditioner, not a replacement window. The Save Energy At Home page says: "Get back up to $75 on a new, ENERGY STAR certified window A/C unit." This is the only "window" rebate on the STEP list.

Casa Verde: screens and air sealing

The Casa Verde Weatherization Rebate Program serves customers who meet income guidelines (2026 table: household of 1 under $2,660 gross monthly income, 4 under $5,550) or an energy burden of 10% or more or income-based assistance. A registered Trade Ally does a home assessment. Listed upgrades include attic, wall, and floor insulation, WiFi smart thermostats, A/C tune-ups, LED bulbs, low-flow showerheads, faucet aerators, solar screens, air infiltration reduction, duct sealing or repair, and window A/C replacement.

No line for replacing windows appears. We did NOT open the Trade Ally manual or program documents, so we cannot rule out an item inside them.

The federal credit and quote discounts

The IRS page on the Energy Efficient Home Improvement Credit covers improvements made through December 31, 2025. Our reading indicates no federal window credit for a 2026 install. Advice: a quote line called a rebate or discount must name the program in writing. The line-by-line arithmetic, labor hours per opening and whole-house math, sits on our installation cost guide; the only figure that binds your house is the written, itemized quote.

Glass for a 122-day summer

ENERGY STAR V7 ZIP table by primary county (read 22 October 2026) places Bexar County's 99 ZIP codes in the Southern zone. Comal (9), Guadalupe (9), Medina (9), Wilson (6), and Bandera (5) ZIP codes are also Southern. Kendall County (Boerne) 5 ZIP codes are South-Central. A ZIP code can cross a county line, so look up the ZIP in the table.

Bexar is Southern, Kendall is South-Central

ENERGY STAR criteria (table October 2023): Southern windows require U-factor ≤ 0.32 and SHGC ≤ 0.23. South-Central windows require U-factor ≤ 0.28 and SHGC ≤ 0.23. Both zones require air leakage ≤ 0.3 cfm/ft².

U-factor measures heat flow (lower is better insulation). SHGC is the solar heat gain coefficient, the share of sun heat the whole window lets in.

122 days at 90F and 14 at freezing

The National Weather Service Austin/San Antonio local climate page shows San Antonio monthly normals: 122.4 days a year with a high of 90°F or more (June 24, July 28.5, August 28.8, September 19.7, May 11.8). There are 14 days a year with a low of 32°F or lower (January 4.7, December 4.3, February 2.7, November 1.3). Snow occurs 0.3 days. Cooling degree days total 3,148 against heating degree days 1,438.

Read the NFRC label, whole unit, on the quote

Ask for the NFRC label values for the whole unit on the quote, and compare the U-factor and SHGC with the bars for your ZIP code. The ENERGY STAR criteria table we read also sets air leakage at 0.3 cfm/ft2 or lower for every zone. Putting the same three numbers beside each bid is what lets you compare products on one basis.

Reading the quote, line by line

A written quote is the homeowner's checklist against the city and utility documents. Each line below corresponds to a requirement or gap found in the permit form, the historic overlay rules, the OHP windows guide, the ENERGY STAR table, and the CPS Energy rebate pages. The quote should make every item verifiable.

Permit line and overlay line

The DSD Residential Repair Permit Application says the permit belongs to the permit applicant and is valid for 6 months from the date of issuance. The quote should state who the permit applicant is — the homeowner or a Home Improvement Contractor registered with the City, as the DSD Residential Permits page allows. The form says the application is subject to an additional processing fee and a 6% surcharge of the total permit fee; we did not read the fee table, so ask the quote to say who pays them.

The quote should include a line confirming whether the property has a historic zoning overlay (H, HS, HE, or HL) per the OHP Before Getting Started page. If an overlay exists, the quote should show the COA status: staff-approved, HDRC-pending, or not yet filed.

Material, finish, and glass numbers for a historic address

For an address with a historic overlay, the OHP Windows guide says if full window replacement is approved, the new windows must feature primed and painted wood exterior finish. Clad, composition, or non-wood options are not allowed unless explicitly approved by the commission. The quote should list the exact exterior finish and note any commission approval for alternatives.

The guide's dimension limits on rails, stiles and recess, listed earlier, are the numbers to hold the quote against, and the quote should name the glass type next to the guide's clear-glass wording. Separately, the ENERGY STAR V7 ZIP table sets performance bars by zone: Southern zone (Bexar, Comal, Guadalupe, Medina, Wilson, Bandera) requires U-factor ≤ 0.32 and SHGC ≤ 0.23; South-Central (Kendall) requires U ≤ 0.28 and SHGC ≤ 0.23. The quote should show the whole-unit NFRC U-factor and SHGC and identify the zone for the property's ZIP code. The same criteria table sets air leakage at 0.3 cfm/ft2 or lower.

Rebate lines and exclusions

The IRS Energy Efficient Home Improvement Credit covers improvements made through Dec 31, 2025, so no federal window credit for a 2026 install. A quote should not label a discount as a rebate unless it names the program in writing. The DSD form says all mechanical, electrical, and plumbing work requires separate additional permits.

The quote should exclude screens if priced apart and note that any electrical, plumbing, or HVAC work tied to the window install needs a licensed trade contractor and its own permit. The DSD form also says the scope submitted is the only work allowed, so the scope on the quote should match the scope on the permit application.

Alamo Heights, Schertz, New Braunfels, Boerne: whose rules?

Alamo Heights, Olmos Park, Helotes, Leon Valley, Universal City, Schertz, Cibolo, New Braunfels, Boerne, Converse, and Live Oak each have their own city offices or sit in a county. We did NOT read any suburb's permit rule. Whether a street is inside San Antonio city limits decides whether DSD applies; the DSD page says DSD issues residential building permits for property located within the City limits.

City limits decide which office

If the property sits inside San Antonio city limits, the DSD permit rules described above apply. If it sits in Alamo Heights, Olmos Park, Helotes, Leon Valley, Universal City, Schertz, Cibolo, New Braunfels, Boerne, Converse, or Live Oak, that municipality's building department governs permits. We have no documents for any of them.

Companies, Reddit threads and the filter that works

The query window replacement san antonio reddit lands on an r/sanantonio thread, "Window company recs?", which was the first Google result on 22 October 2026; we did not read its comments (blocked). Threads are anecdotes, not documents. Search results also show company home pages, Yelp, and listicles; none of them was a rules page for the city. What the documents do support is a filter built on paper: the permit office for the address, the historic overlay status, and the written quote lines described below. If the office is settled, our replacement process guide shows the order of a job on site, and the vinyl vs wood and double-hung vs casement pages cover the frame and style choices.

Repair or replace, and when

The OHP Windows Policy Guide states that in most cases, window repair is more affordable upfront and offers a much greater return on investment than replacement. Its "beyond repair" list includes missing components such as sashes, extreme wood rot, or where 50% or more of a window's components must be reconstructed.

Tests before you ask for a quote

Before you ask who handles window installation san antonio, walk each window against the guide's two lists. Broken or missing glass, rails that no longer align, broken cords, a rotted sill or partly rotted rails and stiles are on its repairable side. Missing sashes, extreme rot or half the components needing reconstruction are on the beyond-repair side. The signs and the smoke test for finding a leak are on our when-to-replace-windows and drafty-windows pages.

What changes with the season

San Antonio sees 122 days at or above 90°F and only 14 freezing days. Cooling degree days (3,148) far exceed heating degree days (1,438). That points to heat gain as the larger load in this city, and the ENERGY STAR sun cap of 0.23 applies in both zones around it.

We found no document that ties window prices or installer availability to the season, so a seasonal discount on a quote should be treated like a rebate line and named in writing. The permit on the DSD form is valid for six months from issuance, which is the clock to plan the job against. The signal-by-signal tests are on our when to replace windows page, the leak-chasing half is on drafty windows, and the order of a job on site is in the replacement process.

What we read, and how

All facts above come from specific documents captured or read on 22 October 2026 unless otherwise noted.

Documents read on 22 October 2026

City of San Antonio DSD Residential Repair Permit Application (Rev 10/25) via Internet Archive capture 20 May 2026. DSD Residential Permits page via Wayback capture 9 September 2026. OHP "Before Getting Started" page via Wayback capture 2 April 2025.

OHP "Windows: Repair, Replacement & New Construction" policy guide (September 2022) via Wayback capture 3 April 2025. CPS Energy STEP page (cpsenergy.com/STEP) read live. CPS Energy Save Energy At Home page read live.

IRS Energy Efficient Home Improvement Credit page read live. ENERGY STAR V7 ZIP table by primary county read live. National Weather Service Austin/San Antonio climate page read live. We did NOT read: the live sa.gov and docsonline.sanantonio.gov pages (HTTP 403 to us), the DSD fee table, the DSD "No Permit Required List", any suburb's permit rules, Reddit comments (blocked), CPS Trade Ally manual or program documents.

Common questions, San Antonio edition

Sources

• City of San Antonio Development Services: Residential Repair Permit Application, Rev 10/25 (read from the Internet Archive copy of 20 May 2026, the live page returned HTTP 403)
• City of San Antonio Development Services: Residential Permits (archive copy of 9 Sep 2026)
• City of San Antonio Office of Historic Preservation: Before Getting Started, Certificate of Appropriateness (archive copy of 2 Apr 2025)
• City of San Antonio Historic Design Guidelines: Windows, Repair, Replacement and New Construction policy guide, September 2022 (archive copy of 3 Apr 2025)
• CPS Energy: Sustainable Tomorrow Energy Plan (STEP) rebates and ways to save
• CPS Energy: Casa Verde weatherization rebate program, 2026 income guidelines
• CPS Energy: Save Energy At Home rebates, including the window A/C unit rebate
• ENERGY STAR: climate zone table by ZIP code, version 7 (Texas counties around San Antonio)
• ENERGY STAR: certification criteria for residential windows by zone, October 2023
• National Weather Service Austin/San Antonio: local climate records, San Antonio monthly normals
• IRS: Energy Efficient Home Improvement Credit, improvements made through December 31, 2025