Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Daly City
Window installation in Daly City costs $340-$1,100 per window for most retrofit work, with full-frame replacements in older Doelger homes running $900-$2,400 installed. The fog, the salt air, the steel casements rusted into their openings, none of it surprises us anymore. Our crews schedule across Westlake, St. Francis Heights, Broadmoor, and Serramonte every week, so we know exactly what your house is made of and what it takes to open up a wall without turning the job sideways. Call (903) 354-7134 and we’ll give you a written price before any work starts.
Why Westlight Windows & Doors Is Daly City’s Preferred Window Installation Company
We answer the phone. That sounds small until you’ve left three voicemails for a contractor who never called back. Someone real picks up at (903) 354-7134, 24 hours a day, seven days a week. Owen Satterfield runs the crew, and he’s the one who put the Kingswell Guarantee in writing: a price before the work, a real arrival window, a clean job site, and a written guarantee handed to you when the job is done. If the work isn’t right within the guarantee period, we come back at no charge. No arguing, no revised invoice at the door.
What matters most in Daly City is that we know this housing. The Doelger tract homes in Westlake are nearly identical row after row, which means we’ve done your exact window configuration before. We know to expect the original steel casement frame corroded into the stucco. We know the 1980s replacement windows somebody put in are probably fogged already, because the marine air here destroys seals in 10-12 years instead of the 20 you’d get inland. That local knowledge means your written quote reflects what we’ll actually find, not a best-case guess.
Window Contractor in Daly City
A Window Contractor in Daly City does more than swap glass, because opening up a 1940s Doelger wall routinely reveals conditions no one priced for. Salt-fog corrosion hides behind the sash. Stucco crumbles around the rough opening once the old frame comes out. Sometimes the lintel above the window has been doing nothing for decades. We handle all of it, but we handle it with a process: inspection first, then allowances written into the contract before we touch the wall. Your quote moves when we find something real, and you approve every change in writing before it happens.
Inspection Before Quote
We don’t quote a Daly City window job sight unseen. Owen or a senior installer walks the exterior first, looking for rust bleed at the frame corners, stucco cracks radiating from the opening, and condensation between panes. Then we open a small section if we need to, because what’s behind the stucco changes the price more than the window itself. That inspection is why our quotes hold.
Written Allowances for Hidden Work
Every Daly City quote includes a written allowance for the things nobody can see until the wall is open: reframing a rotted rough opening, updating wiring that a permit triggers, repairing failed waterproofing. You’ll see the allowance number before work begins, and anything we find gets priced and approved in writing before we proceed. No door-step surprises.
Window Installers in Daly City
Window Installers in Daly City work with one unavoidable fact: most of the houses here were built between 1940 and 1955, and their windows have been failing for years by the time we arrive. A straightforward single-window insert runs $340-$900 installed. A full-frame retrofit into an original steel casement opening, which describes most Westlake jobs, runs $900-$2,400 depending on size and how much stucco work the opening needs. We stock units sized for Doelger rough openings specifically, so we’re not waiting on a factory order out of state.
Retrofit Into Steel Casement Openings
The original steel casements in Doelger homes were built into a 2×4 stucco wall, and modern vinyl or fiberglass units don’t simply drop into that old steel frame. We remove the rusted sash and frame, resquare the rough opening, and build a proper sill with aggressive flashing before the new window goes in. Then the stucco gets patched and sealed around the new frame so fog and wind-driven rain stay outside.
Weatherproofing for West and North Faces
Windows facing the Pacific take the worst of Daly City’s wind-driven moisture. We use flashing tape and sealing methods that exceed what’s standard for inland Peninsula jobs, because a 20-year seal guarantee in San Mateo doesn’t mean much four blocks from the fog line in Westlake. Our workmanship warranty is in writing, and it covers the seal failure that Daly City air is so good at producing.
Trusted Brands We Service in Daly City
We install PGT and CGI impact-rated windows for homes that face the wind off the Pacific, and CWS for homeowners who want a mid-range vinyl that handles salt air well. We keep the most common Daly City sizes in stock locally, which means we’re not waiting weeks for a factory ship when your rough opening matches a unit we already have. When you need Window Installation on a Doelger or 1980s-era home, we’ll match the product to the exposure, not force one brand onto every job. Written price first, every time.
Common Window Installation Problems We See in Daly City Homes
- Rusted steel casement frames. The original 1940s and 1950s steel sash in Westlake homes corrode from decades of salty fog, often rusting into the jamb so severely that removal damages the surrounding stucco. We plan for stucco repair on every Doelger retrofit.
- Fogged replacement windows from the 1980s and 1990s. Daly City’s marine microclimate wrecks IGU seals far faster than inland cities, so plenty of homeowners are on their second full replacement cycle on a 70-year-old house. If your “newer” windows are already hazy, it’s the air here, not bad luck.
- Failed waterproofing behind the stucco. Wind-driven rain finds every gap around an old window, and by the time you see the stain inside, the framing behind it is usually compromised. We open the wall, assess, and price the repair before proceeding.
- Permit-triggered code upgrades. Once walls are open, the inspector often flags outdated wiring or undersized framing that must come up to current code. Our Daly City quotes carry a written allowance for exactly this, so the job doesn’t stall or surprise you.
Pricing for Window Installation in Daly City, CA
We Also Serve Cities Near Daly City
Beyond Daly City, our crews work in Brisbane, South San Francisco, San Bruno, and Pacifica regularly. Each of those cities has its own housing patterns and fog exposure, but the same Kingswell Guarantee applies everywhere: written price first, written guarantee at completion. If you’re just over the border or comparing options, Window Installation in Daly City is what we do most weeks, and we’re glad to come take a look at your house.
Serving Daly City, CA - Our Local Coverage Area
We’re based in the Daly City 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 Daly City
Daly City sits directly in the path of prevailing Pacific winds and is reliably the foggiest, most marine-exposed city on the Peninsula. The salt-laden humidity here destroys IGU seals and pits aluminum frames far faster than in Fremont or San Mateo, so seals that would last 20 years inland often fog out in 10-12 years here. That’s not a product defect. It’s the air. Call (903) 354-7134 and we’ll assess whether you need a seal-only repair or a full replacement, with a written price either way.
You find things nobody priced for. On a recent Westlake row-home job off Eucalyptus Drive, our crew opened a 1940s stucco wall and found the original steel casement sash rusted into the jamb, plus 1980s replacement windows that had already fogged out. We also found wiring and framing the permit would require us to bring up to code. That’s why we write allowances into every Daly City contract before touching anything, so the discoveries don’t become a fight about money.

In most Doelger homes, yes. The original steel casement frames are rusted and often fused to the stucco, so we remove them, resquare the rough opening, build a proper sill with aggressive flashing, and set the new unit into that corrected opening. It’s more work than an insert, but it’s the right fix. Your written quote reflects that retrofit work before we start.
Yes, if the installation includes the flashing and sealing that Daly City’s marine exposure demands. A properly installed modern unit with low-e glass, a thin coating that reflects heat back into the room in winter and out in summer, will stop most drafts and interior condensation. We’ll also inspect the rough opening for hidden water damage while we’re in there. Call (903) 354-7134 for a free estimate.
We give you a written price before any work starts, with allowances for the known unknowns: framing, wiring, waterproofing, stucco repair. If we find something beyond the allowance, we stop and give you a written change order with the exact cost before we proceed. You approve it or you don’t, but nothing gets done and nothing gets billed without your signature. That’s the Kingswell Guarantee, and it’s handed to you in writing at the end of the job.
Written by Owen Satterfield, Owner at Westlight Windows & Doors, serving Daly City since 2009.










Before
After
Before
After
Before
After