Window Replacement in San Francisco - Free Measure, Exact Written Quote

Fast, Reliable Window Replacement Across San Francisco

Window replacement in San Francisco typically costs between $900 and $2,800 per opening for most homes, with custom Victorian and Edwardian work running higher because of the millwork and historic requirements. We work across the city every week, from the fog-heavy Sunset to the sunnier slopes of Bernal Heights. If you’re weighing what a replacement will actually cost on your place, call us at (831) 480-4124 and we’ll walk the job with you before any number goes in writing.

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San Francisco is our home market. We know what the salt air does to window hardware in the Richmond, what Planning wants to see on a painted-lady Victorian in Noe Valley, and why a Marin-grade window spec fails three blocks from Ocean Beach. Our Window Replacement team handles everything from a single failed sash in a Marina flat to a full-house replacement on a 1910 Edwardian in Cole Valley. When you call, a real person answers. That’s not a slogan; it’s how we run the office.

Why Lightwell Windows San Francisco Is San Francisco’s Preferred Window Replacement Company

Most of our work in San Francisco comes from referrals: an architect in the Mission passes our name to a homeowner in Pacific Heights, or a designer we worked with in Noe sends us to a project in the Inner Sunset. That’s how a local company is supposed to operate. We’ve been part of the Cedarwell network since 2010, which means every job carries the Cedarwell Care Promise and the 365-Day Done Right Promise: if the finished work isn’t right, we make it right. No debate, no countdown.

Our San Francisco customers tell us the same things repeatedly. They want a written price before any work starts, not an estimate that balloons. They want a crew that shows up in uniform, introduces itself, and keeps shoe covers on from the front door to the window. They want to know who’s in their house. And they want a phone number that rings to a human at 9pm when a question about an install comes up. That’s the job. Keith Yamada leads our San Francisco team, and he holds every project to that standard.

We’re not a call center dispatching unknown subs. The same background-checked technicians who measure your windows are the ones who install them. If something needs attention after the job, you call the same number and reach the same office. For homeowners in San Francisco, that accountability matters more than a flashy brochure.

Energy Efficient Windows in San Francisco

Energy efficient windows in San Francisco are less about beating summer heat and more about stopping fog-driven moisture and air leaks. Our marine layer means cool summers, but it also means windows that weep condensation for weeks at a time and wood sashes that swell and rot faster than anyone expects. A properly specified low-E insulated glass unit with the right SHGC for your exposure keeps the fog out and the heat in without turning a west-facing Victorian sunroom into a greenhouse.

Fog and condensation control

In the Sunset and Richmond, we regularly replace single-pane sashes that have been sweating since the house was built. Condensation inside the glass isn’t just annoying; it rots interior millwork and feeds mold in the wall cavity. The fix is a dual-pane unit with warm-edge spacer and a low-E coating matched to the home’s orientation.

Low-E glass selection for each exposure

A south-facing bay window in Bernal Heights gets real sun. A north-facing window in the Outer Richmond gets almost none. We specify different glass packages for each. Most energy-efficient replacements in San Francisco run between $1,100 and $2,200 per opening depending on frame material and glass spec.

Window Repair in San Francisco

Window repair in San Francisco is usually about weather. Salt air pits standard aluminum hardware within two fog seasons, and steel casement windows on 1930s stucco homes rust shut in the closed position. Some repairs are straightforward: replacing a failed balance, freeing a painted sash, replacing worn weatherstripping, reglazing a cracked pane. Others require custom fabrication because the original window was built for that exact opening and nothing off the shelf fits.

Hardware replacement and corrosion repair

We carry 316 stainless and powder-coated hardware options for exactly this reason. Standard zinc or bare aluminum hardware fails fast in the fog belt. When we repair or replace a casement operator or hinge in the Richmond, we use materials that won’t bind again in two years. Expect $180 to $450 for a typical hardware repair.

Sash and frame rehabilitation

Older double-hung sashes with painted-shut joints or failing ropes can often be rebuilt in place. We remove the sash, strip the paint from the contact surfaces, replace the cord or balance, and reinstall with new weatherstripping. Full sash rehabilitation runs $400 to $900 per window, depending on condition and whether reglazing is needed.

Trusted Brands We Service in San Francisco

We work with a tight lineup of manufacturers so the recommendation fits the house, not a vendor’s preference. For San Francisco’s older homes, ECO Window Systems makes a steel-look aluminum casement that handles fog exposure well. Mr-Glass supplies insulated glass units with the glazing options historic homes need. Therma-Tru covers entry and patio doors that usually get replaced alongside windows. Because we stock common San Francisco parts locally, repairs and small replacements don’t wait on cross-country freight. We fix what we install and we service what the fog breaks, regardless of brand.

Common Window Replacement Problems We See in San Francisco Homes

Every city has its own failure patterns. In San Francisco, these four show up most often:

• Rusted steel casements in the Sunset and Richmond. These 1930s stucco homes frequently have original steel sashes that have seized in place. Modern egress code says a bedroom window must open fully; a rusted-shut casement fails that. Replacement requires a custom retrofit that keeps the original exterior reveal.
• Roof-to-wall flashing failures on bay windows. San Francisco’s sloped roofs and driving fog expose shallow bay-window flashing. We see water stains on interior sills and rot in the framing below. Fixing this properly means pulling the window, repairing the framing, and installing new step flashing before the window goes back in.
• Single-pane original glass with failed glazing putty. Most pre-1920 windows in San Francisco have wood frames with single-pane glass. When the putty fails, water sits against the wood and the sash starts to rot. We replace the sash with a custom-milled unit that matches the original profile and accepts an insulated glass unit.
• High-SHGC glass overheating west-facing rooms. A glass package specified for a warm climate will bake a west-facing Victorian sunroom in the Outer Richmond. We see failing interior finish and warped millwork from exactly this. The fix is selecting glass by orientation, not by default.

Pricing for Window Replacement in San Francisco, CA

We Also Serve Cities Near San Francisco

If you’re in Window Replacement in San Francisco territory or just over the line, we serve homes in Daly City, South San Francisco, Emeryville, and Berkeley as well. The fog and salt air don’t stop at the county line, and neither do we. Our crews dispatch from the San Francisco Bay Area office to all of these communities.

FAQs About Window Replacement in San Francisco