Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterWindow Company in San Francisco, CA
Westlight Windows & Doors is a window company that works on San Francisco homes every week, and the jobs here don’t look like jobs anywhere else in the Bay Area. Most San Francisco houses are wood-framed Victorians and Edwardians built before 1915, and the fog that sits over the Sunset and Richmond for months at a time rots window sills from the inside out. Add in the city’s historic-district design rules and narrow streets with tight parking, and you need a crew that knows exactly what to expect before the first screw comes out. If you want to understand what your project will cost, call (903) 354-7134 and we’ll walk you through it.
Why San Francisco Homes Are Different
San Francisco’s housing stock is mostly attached wood-framed flats and row houses from the 1880s through 1915, with tall, narrow double-hung windows, bay windows that project from the facade, and paired entry doors with transom lights overhead. The original frames are old-growth fir and redwood – material you cannot buy off a shelf anymore. That matters because a standard off-the-rack vinyl window will not match the sightlines or the mullion profiles on a Mission or Noe Valley Victorian, and it may not pass design review either.
The climate shapes the work just as much as the architecture. On the west side of San Francisco – the Outer Sunset, Outer Richmond, and Parkside – the marine fog layer sits against glass for hours every morning. Water wicks into exposed wood, and we routinely find ground-floor window sills that are hollow beneath intact paint. A screwdriver pokes straight through. That’s why our crews budget for full-frame replacement on nearly every Sunset Victorian job instead of sash-only swaps. Coastal-rated hardware and proper moisture barriers are not add-ons here; they are what keeps a new window from failing in five years.
Our Main San Francisco Services
The three services San Francisco homeowners call Westlight about most are window replacement, window installation, and door installation. Each has its own San Francisco page with local pricing and details.
Window Replacement in San Francisco
Window replacement in San Francisco almost always involves a full-frame removal rather than a quick sash swap, especially on Victorians and Edwardians where the original wood has rotted below the sill line. We measure every opening, order units that match the home’s existing profiles and sightlines, and pull the old frame out cleanly before the new one goes in. If you live in a designated historic district, we’ll help you understand what the Planning Department requires before you order anything. Full details are on our Window Replacement in San Francisco page.
Window Installation in San Francisco
Window installation on new construction and additions across San Francisco has different constraints: grade-level setbacks, egress requirements, and the city’s strict energy codes. The window has to be installed level, shimmed correctly, flashed with moisture barrier, and sealed so fog-driven rain cannot penetrate from the outside. Our crews work with glass packages from ViewLux and PGT for coastal conditions on the west side. The full scope and the San Francisco price list are on our Window Installation in San Francisco page.
Door Installation in San Francisco
Door installation in San Francisco usually means replacing an entry door that has warped or swollen from decades of fog moisture, or a front door on a Victorian with a transom that no longer holds glass properly. We install Therma-Tru and other solid-core entry doors, hang them with proper clearance, and set thresholds so water cannot wick underneath. Paired doors with transoms need careful framing and shimming to close squarely. See what’s involved on our Door Installation in San Francisco page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Francisco
Westlight carries eight manufacturer lines, and for San Francisco jobs we commonly turn to PGT, CGI, CWS, and ViewLux – brands that make sense for coastal fog, wind exposure, and historic-profile matching. Parts and hardware for these lines are stocked so we can quote accurately and order without long delays. See the full our brands page for what each line offers.
Pricing for Window Company in San Francisco, CA
| Service | Typical range in San Francisco |
|---|---|
| Single standard window replacement (installed) | $500 - $900 |
| Full-frame replacement on a Victorian double-hung | $1,200 - $2,800 |
| Bay window (three-sided oriel, specialty ordered) | $4,200 - $11,000 |
| Wood-clad custom window, historic profile | $1,800 - $4,600 |
| Standard new-construction window installation | $400 - $800 |
| Entry door replacement (single, pre-hung) | $1,400 - $3,200 |
| Paired entry doors with transom | $4,000 - $9,800 |
| Full-frame door install with rot repair to jambs | $2,200 - $5,400 |
Prices in San Francisco run higher than most Bay Area cities because so many openings are non-standard, and because crews have to plan for parking, building access, and time spent on elevators or narrow stairwells during installation. What we promise is that the price we give you in writing before any work begins is the price you pay – no revised invoices at the door, no change orders unless you ask for something new.
Neighborhoods We Serve in San Francisco
Westlight Windows & Doors serves every San Francisco neighborhood, including the ones where window and door work gets complicated fastest. Our crews know the parking constraints and the building access patterns in each area.
- The Mission
- Castro
- Noe Valley
- Pacific Heights
- Outer Sunset
- Outer Richmond
For most appointments in San Francisco proper, we schedule a committed arrival window and hold to it, because we know a missed appointment means you’ve taken time off work and moved furniture for nothing.
Service Area – Cities Near San Francisco
Westlight also serves homeowners in the cities directly around San Francisco. If you’re in Daly City, CA, Brisbane, CA, Sausalito, CA, or South San Francisco, CA, the same Kingswell Guarantee applies – written price before work, a committed arrival window, and a written guarantee on the finished job.
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 Company in San Francisco
We book by committed arrival window, not by “sometime Tuesday.” For replacement jobs within San Francisco, we typically schedule the first measurement visit within a few days. Once we have measurements and product lead times, we give you a written schedule and hold to it.
In designated historic districts, San Francisco Planning Department design review may require that replacement windows match the original appearance closely, and that can influence which products you can use. On standard replacements outside those districts, the building code governs. We’ll tell you early what applies to your address.
No. The price we give you in writing before any work begins is the price you pay. The only way a number changes is if you add scope – a new rotted jamb we could not have seen, an extra window, a different hardware finish. Call (903) 354-7134 to get a free estimate for your San Francisco home.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Francisco Customers Say
"Replaced eight drafty old windows that were basically single pane. The house is warmer already and the street noise is way down. Crew was on time both days and the price was exactly the quote."
- Harold Bemis"Our energy bill in summer was brutal. New windows made a real dent in it. Salesman wasn't pushy and didn't do the fake "today only" discount thing the others tried."
- Bethany Oh"Two bedroom windows that never opened and one that wouldn't stay up. All replaced in an afternoon. The crew was clean, hauled off the old frames, and the quote held."
- Colette Rhee