Local research · updated July 2026
Replacement Windows in San Francisco, California
San Francisco has one of the oldest housing stocks in the American West: 77.2% of the city's 411,542 housing units were built before 1980, and the median home dates to 1945. That means block after block of Victorians, Edwardians, and Marina-style flats still carrying original single-pane wood double-hungs. In a marine climate where almost nobody owns air conditioning, replacement here isn't about cooling bills — it's about drafts off the fog, condensation on cold glass, and street noise in one of the densest cities in the country. It's also about paperwork. For decades, the Planning Department's window rules made swapping wood for vinyl on a street-facing facade a genuine ordeal; a 2025 reform loosened that for non-historic buildings, but designated historic properties still face strict matching requirements.
Short answer
In San Francisco, a standard replacement window (double-hung, casement or slider) typically costs $645–$3,680 installed. Bay and bow windows run $3,235–$10,350+, and a sliding patio door $1,940–$6,470. Frame material and the glass package decide where a project lands in that range.
Planning ranges built from NREL and BLS cost data, localized to San Francisco with the BEA Regional Price Parity for San Francisco-Oakland-Fremont, CA (2024). How we estimate →
77.2%
of San Francisco homes were built before 1980, the era of single-pane and early aluminum windows
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
1945
median year built across San Francisco's 411,542 housing units
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
SHGC ≤ 0.23
the ENERGY STAR v7.0 number that matters most in the South-Central zone
Source: EPA ENERGY STAR v7.0
Window installers in San Francisco
Compare companies serving San Francisco. Request a free, no-obligation quote and we route it to the company or a vetted local installer.
| Company | Location | Request a quote |
|---|---|---|
 4.8 · 200,000+ reviews | Hayward, CA | Get a quote → |
| 1Pella Windows and Doors Showroom of Alamo, CAPella | Alamo, CA | Get matched → |
| 2Pella Windows and Doors Showroom of Belmont, CAPella | Belmont, CA | Get matched → |
| 3Pella Windows and Doors Showroom of Hayward, CAPella | Hayward, CA | Get matched → |
| 4Pella Windows and Doors Showroom of Rohnert Park, CAPella | Rohnert Park, CA | Get matched → |
| 5Pella Windows and Doors Showroom of San Francisco, CAPella | San Francisco, CA | Get matched → |
Renewal by Andersen of San Francisco
4.8 · 200,000+ reviewsHayward, CA showroom · serving the San Francisco metro
Full-service manufacturer and installer, transferable warranty, local crews. Why it's our Top Pick
Get a quote →Listings compiled from manufacturer dealer locators and public business records. Premier and Sponsored Partners pay for placement and are labeled as such; star ratings shown are reported by the partner, with the source and date beside them. See our advertising disclosure. Contacting a company shares your details with it (or a vetted local installer) so it can reach you about your project.
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What drives window decisions in San Francisco
- Pre-war housing dominates: 77.2% of San Francisco homes predate 1980 and the median year built is 1945, so original single-pane wood double-hungs — often painted shut or sash-cord-broken — are still the norm on Victorians, Edwardians, and Marina-style buildings.
- Planning review is the local wildcard. A 2025 amendment to Planning Code Section 136.2 narrowed the Planning Department's review of replacement windows on non-historic buildings and expressly allowed more framing materials, including vinyl. Designated historic properties (Article 10 landmarks and conservation districts, Article 11 buildings) still must match the original windows in material, profile, and operation.
- The climate is IECC zone 3C — warm-marine, San Francisco County — with essentially no cooling season. Fog-driven drafts, condensation, and noise are what push replacements here, so U-factor and air sealing matter far more than solar heat gain ratings.
- The Department of Building Inspection requires a building permit for window replacement on every building in the city, even non-historic ones. Straightforward like-for-like swaps typically qualify for over-the-counter review; landmark and conservation-district properties do not.
Replacement windows & doors by type in San Francisco
Local cost ranges and South-Central-zone efficiency guidance for each window and door style, specific to San Francisco homes:
Ranges localized to San Francisco's cost level: national planning ranges shifted by the BEA Regional Price Parity for San Francisco-Oakland-Fremont, CA (115.6, U.S. = 100; 2024). How we estimate local costs →
Efficiency requirements for San Francisco's climate
San Francisco sits in the ENERGY STAR South-Central zone (IECC zone 3C (warm, marine), San Francisco County). Under the v7.0 specification, qualifying windows need a U-factor of 0.28 or lower and an SHGC of 0.23 or lower. Cooling-leaning climate: blocking solar heat gain (low SHGC) matters as much as insulation.
Not sure what these numbers mean? Read our plain-English guide to U-factor and SHGC.
What replacement windows cost here
San Francisco is one of the most expensive window-replacement markets in the country, and the premium isn't just Bay Area labor rates. Pre-war buildings mean nonstandard opening sizes, ornate bay windows, and frequent custom fabrication rather than off-the-shelf units. If your building is a designated historic resource, matching requirements can push you toward wood or approved wood-clad frames, which cost meaningfully more than vinyl. Nearly every home here predates 1978, so lead-safe work practices under the EPA's RRP rule add prep and containment time. Permit fees from the Department of Building Inspection apply to every job, and Planning review — where still required — can add time and revisions. The 2025 rule change allowing vinyl on non-historic buildings should ease costs for many owners, but get any material assumptions confirmed against your building's historic status before you sign a contract.
For a breakdown by frame material and install type, see our full cost guide.
Rebates & incentives in California
The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.
California's IRA rebates run through the California Energy Commission. The HEAR-funded HEEHRA program (delivered via TECH Clean California / The Switch Is On) launched for income-eligible households, but Phase I single-family rebates were fully reserved statewide as of early 2026, with a waitlist and a Phase II in design. HOMES funds are being routed into the Equitable Building Decarbonization Direct Install program and a Pay-for-Performance program that were not yet issuing rebates as of mid-2026. Confirm current availability first.
- Equitable Building Decarbonization Direct Install Program. A CEC-run program that provides no-cost efficiency and electrification retrofits for income-qualified households in target regions; envelope work can be included in a project scope, but it is contractor-delivered rather than a rebate you apply for. Confirm current region availability. (California Energy Commission program pages)
- SMUD Home Performance Program (Sacramento). SMUD, Sacramento's municipal utility, offers whole-home performance incentives that can include window upgrades meeting ENERGY STAR criteria when packaged with other qualifying efficiency work — one of the few California utility programs that pays anything toward windows. (SMUD rebates and Home Performance Program pages)
- Investor-owned utility programs (PG&E, SCE, SDG&E). California's large investor-owned utilities generally do not offer standalone window replacement rebates; their residential programs focus on heat pumps, weatherization, and financing. Windows mainly benefit indirectly through whole-home and financing offerings — check your utility's current program list. (PG&E, SCE, and SDG&E residential rebate pages)
California's Title 24, Part 6 Energy Code is among the strictest in the nation and applies to replacement windows, not just new construction — permitted replacements in most climate zones must meet low U-factor and low solar-heat-gain (SHGC) prescriptive limits.
Replacement windows in nearby metros
Not in San Francisco proper? These nearby markets carry the same local research: housing-age data, climate-zone specs, and current rebate status for each city:
San Francisco window replacement FAQ
›Do I need a permit to replace windows in San Francisco, and what about street-facing windows?
Yes — the Department of Building Inspection requires a building permit for window replacement on every building in San Francisco, historic or not. Street-facing windows are the local complication: the Planning Department reviews them under Planning Code Section 136.2, and for years its standards steered owners toward matching the original wood on visible facades. A 2025 ordinance narrowed that review for non-historic buildings and allowed a broader set of framing materials. If your building is a City Landmark, in an Article 10 conservation district, or an Article 11 building, expect a stricter path — typically a Certificate of Appropriateness or Permit to Alter rather than an over-the-counter approval.
›What efficiency ratings should replacement windows meet in San Francisco?
San Francisco is in climate zone 3C — warm and marine — which falls in the ENERGY STAR South-Central zone. The current version 7.0 specification there calls for a U-factor of 0.28 or lower and a solar heat gain coefficient of 0.23 or lower. Honestly, the SHGC number matters less in the fog belt than it does in Sacramento; what you'll actually feel is the U-factor and air-leakage performance, since drafts and cold single-pane glass are the main comfort problems in unconditioned, AC-free San Francisco homes. California's Title 24 energy code also sets minimum performance requirements that replacement windows must meet for permit approval.
›Are there rebates or tax credits for window replacement in San Francisco right now?
The federal 25C Energy Efficient Home Improvement Credit expired on December 31, 2025, so windows installed after that date no longer qualify for the federal credit. Regionally, BayREN — the Bay Area Regional Energy Network — runs the Home+ rebate program for single-family and small multifamily homeowners with active PG&E accounts, but its rebates center on insulation, air sealing, and heat pump upgrades; windows are not a headline measure, so confirm current eligibility with BayREN before counting on anything. PG&E's own residential efficiency offerings change year to year and are worth checking directly. Budget as if you'll receive nothing, and treat any rebate as a bonus.
›Can I replace the wood windows on my Victorian with vinyl?
It depends on your building's historic status, and the honest answer changed in 2025. San Francisco amended Planning Code Section 136.2 to expressly allow vinyl and other framing materials on non-historic buildings — which includes many Victorians and Edwardians that were never formally designated. But if your home is a City Landmark, sits in an Article 10 conservation district, or is otherwise rated as a historic resource, replacements must still match the originals in material, finish, and exterior profile, which usually means wood or an approved wood-clad product with matching sightlines. Even where vinyl is now legal, be aware that thicker vinyl frames visibly change the proportions of an ornate facade — some owners choose wood-clad for that reason alone.
Sources
- — U.S. Census Bureau, American Community Survey 5-Year Estimates (B25034, B25035)
- — EPA ENERGY STAR Version 7.0 Residential Windows specification
- — DOE/PNNL IECC climate zone assignments by county
- — IRS, 25C Energy Efficient Home Improvement Credit (P.L. 119-21)