Single hung
Double hung
Horizontal roller
Casement
Bay & bow
Sliding glass doors
Entry doors
Impact garage doors
PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateFast, Reliable Window Installation Across San Francisco
Window installation in San Francisco means working with fog, salt air, steep hills, and houses that are older than most states. A standard replacement window rarely fits the openings in a 1905 Edwardian or a 1930s Sunset District stucco box. That’s why every job we take on begins with careful measurement, honest conversation about what will and won’t work, and a written price before anything gets ordered. Lightwell Windows San Francisco serves the whole city, from the Richmond to Bernal Heights, with crews who know this housing stock well. Call (831) 480-4124 to schedule a free estimate for your Window Installation project.
Why Lightwell Windows San Francisco Is San Francisco’s Preferred Window Installation Company
Our customers are San Francisco homeowners who have been through this before, or know someone who has. They’ve heard stories about crews that left dust on the floors, or orders that showed up wrong because someone measured from the wrong edge of the trim. We built our approach around not repeating those stories.
Every Window Installation technician who walks through your door is background-checked and uniformed, so you know who is in your home before you open the door. We follow the C.A.R.E. values on every visit: Clean up like it is our own home; Ask before we move or touch anything; Respect your time and quiet hours; Explain the price before the work. That means shoe covers at the door, drop cloths along every path, and a photo of the cleanup before we leave. Keith Yamada leads the team, and his standard is simple: the house looks better when we leave than when we arrived.
We’ve done enough work in San Francisco to know the difference between a Victorian in Noe Valley with original sash weights and a mid-century in the Richmond with steel casements rusted open. Local knowledge like that means fewer surprises, and a price that holds.
Styles & brands we work with
Vinyl Windows in San Francisco
Vinyl windows in San Francisco serve a specific role: they deliver solid thermal performance and low maintenance at a price that works for the city’s more modest housing stock. For many homeowners in the Sunset, Richmond, and Excelsior, vinyl is the right answer for replacing aluminum or steel casements that have corroded in the marine layer. Most vinyl window installations in San Francisco run between $450 and $850 per opening, depending on size, glazing, and whether the existing frame can be reused.
A well-installed vinyl window here needs a few things many installers skip. The flashings and sealants have to be chosen for a marine environment. The anchors need to handle the building’s movement on these old wood frames. And the glazing should be a low-E combination suited to a climate where we rarely run air conditioning but we run heat in the fog. We specify those details up front, and the price is written before we order anything.
Double-Hung Replacements in Fog Zones
Double-hungs are the traditional choice for San Francisco Victorians and Edwardians, and a modern vinyl double-hung gets you a lot closer to the original look than many people expect. We commonly specify a white or tan frame with a true sloped sill and matching brickmold to keep the character intact. Tilt-in sashes make cleaning easier when you’re three floors up with the wind blowing off the Pacific.
Coastal-Rated Vinyl Casements
For stucco homes built in the 1930s and 1940s, vinyl casements with stainless hardware solve the corrosion problem that kills original steel units. The hardware is the weak point in most coastal vinyl, so we specify marine-grade stainless hinges and locks, not the plated parts found on cheaper lines. You pay a little more up front and you don’t see the sash corrode shut two years in.
Picture Window in San Francisco
A picture window in San Francisco is often the whole reason to buy the house: the view of the bay from a Potrero Hill living room, the Golden Gate from the Richmond, the city lights from a Diamond Heights bedroom. Picture windows run between $600 and $1,400 per opening in San Francisco, with the spread driven by glass size, glazing performance, and the structural work needed around the opening.
Large fixed glass in this city has two jobs no one thinks about until the first winter storm. One is cutting the heat loss that fog and wind pull through older glazing. The other is handling wind pressure on exposed hillsides, especially west of Twin Peaks. We specify the right design pressure rating for the site, not just whatever the distributor has in stock. And because a picture window can weigh several hundred pounds, the rough opening often needs reinforcement on these old wood-framed homes. That work is part of the written price, not an add-on found after demolition.
Fog-View Glazing for Large Fixed Glass
When the view is the point of the window, the last thing you want is glass that turns into a mirror at night or fogs at the seams. We recommend a low-iron glass with a high-performance low-E coating that keeps the view clean and cuts solar heat gain on south-facing walls. It costs more than builder glass, usually 20 to 30 percent more, and it’s the difference between a window you look at and a window you look through.
Structural Framing for Wide Openings
A six-foot or eight-foot picture window needs a header that can handle the span. Many older San Francisco homes have non-standard framing, undersized headers, or rot where water has been getting in for decades. We inspect that framing when we measure, and if a new header is needed, it goes into the written price before any glass is ordered. You don’t get a surprise change order because the wall wasn’t what we expected.
Trusted Brands We Service in San Francisco
We’re not tied to one manufacturer, so the recommendation fits your house instead of our invoice. We carry and install PGT, CGI, Therma-Tru, and ViewLux, among eight total lines. For San Francisco’s marine environment, we often specify PGT for impact and design pressure needs, ViewLux for contemporary aluminum thermal breaks, and Therma-Tru for exterior doors that can take the damp and salt. Because we stock components locally for our San Francisco customers, we can turn around replacement parts and adjustments faster than a shop that has to order everything from the East Coast. And every product we install carries the 365-Day Done Right Promise: if the finished work is not right, we make it right, no debate.
See the difference
Before
After
Before
After
Before
AfterCommon Window Installation Problems We See in San Francisco Homes
- Rusted-shut steel casements in the Sunset and Richmond. The marine layer carries salt that eats through original hardware in about two decades. The sash welds itself to the frame, and the operator handles snap when someone forces them open. We retrofit these openings with thermally broken frames and stainless hardware so the window actually opens in the spring.
- Non-standard rough openings in Victorians. Homes built between 1880 and 1920 were framed for custom millwork, not modern 24-inch or 28-inch windows. Some openings are as narrow as 22 inches. An off-the-shelf unit will not fit without hacking the trim, so we custom-mill jambs and sashes to match the opening, not the other way around.
- Fogged or failing double-panes from the salt air. When the seal fails on a double-pane, the fog inside the glass is permanent unless the unit is replaced. San Francisco’s damp cycles accelerate seal failure. We see it most on south and west elevations where thermal cycling is worst.
- Water intrusion on hillside exposures. West-facing walls on hillsides take the full force of winter storms, and windows installed without the proper design pressure rating leak. The water shows up as peeling paint, stained plaster, and rot at the sill. The fix is a properly rated window, correctly flashed, not just more caulk.
Pricing for Window Installation in San Francisco, CA
Window installation in San Francisco runs from about $450 to $1,400 per opening, depending on the window type, size, glazing, and what the rough opening demands. Vinyl double-hungs and casements sit at the lower end. A large picture window or a custom-milled wood double-hung for a historic home runs toward the upper end. If the wall has rot or the header needs replacing, that work adds to the total, but it is written into the quote before we order. Lead times on custom units, especially mahogany double-hungs that need historic review, can run 10 to 14 weeks. We put the price in writing on day one, and the number does not move unless you change the scope. Call (831) 480-4124 for a free estimate on your San Francisco window installation.
We Also Serve Cities Near San Francisco
Our crews work throughout the Bay Area, including Daly City, South San Francisco, Emeryville, and Berkeley. If you’re in one of those cities and your windows are fogged, rusted, or leaking, the same team and the same written pricing apply. Reach out and tell us what you’re seeing, and we’ll set up a time to look at it.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Window Installation in San Francisco
Historic preservation review in San Francisco typically adds four to twelve weeks to the timeline, depending on the district and whether your windows are visible from the street. If you’re in a designated historic district or your home is on the California Register, the Planning Department may require period-appropriate details like true divided lites, matching mullion profiles, and wood or wood-clad frames. We handle the drawings and submittals, but the review clock belongs to the city. Call (831) 480-4124 and we can walk you through what your specific address will face.
Yes. Laminated impact glazing with a high-performance low-E coating can meet Title 24 energy requirements while keeping the original sightlines on a double-hung or casement. The lamination adds weight, so the sash and balance system may need to be reinforced, which is work we do in our shop before installation day. For most Victorians, the visual difference is minimal, and the window ends up quieter and warmer than the original single-pane. If you want a sample of the glass next to your existing window, we can bring one to the estimate.
Steel casements in the Sunset rust shut because the marine layer deposits salt on the hardware, and the paint film on the sash edge eventually fails, letting moisture reach bare steel. Once the sash is seized, forcing the operator usually snaps the handle or bends the linkage. Some frames can be saved if the rust is surface-level, but most of the original 1930s units we see are beyond salvage. We retrofit them with thermally broken aluminum or vinyl casements that match the thin sightlines and include stainless hardware. That solution meets current egress and energy codes and opens for the first time in decades.
For a custom-milled wood double-hung in a San Francisco Victorian, plan on ten to fourteen weeks from signed quote to installation, and add four to twelve weeks if historic review is required. The milling is the bottleneck, especially for mahogany or fir with true divided lites. If you have a drafty original window in January, that’s a long time to wait, so we recommend starting the process in late summer or fall if you want the work done before the rainy season. We keep the old window in place until the new one arrives, so you’re never living with plywood over an opening.
Impact windows are not required by code anywhere in San Francisco, but on west-facing hillside exposures, a properly rated impact or high-design-pressure window is the difference between a dry wall and a wet one during winter storms. The wind-driven rain those elevations take will find any flashing mistake or under-rated frame. If your home is near Ocean Beach, in the Outer Sunset, or on an exposed slope in the Richmond, we recommend at least a DP 50 rating, and often laminated glass for the added strength. The price difference is usually 15 to 25 percent over standard, and it is written into the quote up front so you can decide with real numbers.
If you’re ready to replace windows in your San Francisco home, call (831) 480-4124 to schedule a free estimate. We’ll measure, talk through what you’re seeing, and put a written price in your hands before anything gets ordered.
Written by Keith Yamada, Owner at Lightwell Windows San Francisco, serving San Francisco since opening its Bay Area office in 2010.
Six Reasons Homeowners Choose Lightwell Windows San Francisco
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.