Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Windsor, CA
Most window and door replacement jobs in Windsor run $650 – $1,400 per opening for standard residential work, with WUI-compliant fire-rated installations starting closer to $1,100 per window due to tempered glass and non-combustible frame requirements. Lightwell Windows & Doors serves Windsor from our San Francisco Bay Area dispatch office, with crews that understand the local permit landscape and the specific challenges of 1990s-era tract home retrofits. Call (562) 478-8017 to schedule your free estimate.
We’re a Cedarwell network company, independently operated and led by Keith Yamada, and we’ve built our reputation on the Cedarwell Care Promise: shoe covers and drop cloths on every visit, a photo of the clean-up before we leave, and a written price before any work starts. In Windsor, that promise matters more than usual, because the job isn’t just about swapping old windows for new ones. It’s about navigating fire-hazard zone requirements, thermal-stressed seals from inland heat swings, and the particular quirks of a town that grew from farmland to bedroom community in a single generation.
Why Windsor Homes Are Different
Windsor incorporated in 1992 and boomed through the 1990s and 2000s as a planned suburban community. The result is a housing stock dominated by builder-grade tract homes with aluminum-frame sliding windows, early vinyl double-hungs, and hollow-core exterior doors that are now reaching end of life all at once. These weren’t built to last 40 years, and many are showing it.
The inland northern Sonoma County climate creates wide daily temperature swings. Summer afternoons hit 90 – 100°F, then fog rolls in overnight and cools everything rapidly. That thermal cycling destroys window seals and causes the fogged IGUs we see constantly in the 1990s-era double-pane units across town. The same dry heat warps builder-grade door frames, creating gaps that let conditioned air escape and pests enter.
Most critically, Windsor sits within Sonoma County’s High Fire Hazard Severity Zone. The entire town evacuated during the 2019 Kincade Fire. This means many window and door replacement projects trigger California’s WUI building code, requiring fire-rated glazing, tempered glass, and non-combustible frames. Homeowners in eastern hillside-adjacent neighborhoods often discover this only when they pull a permit, because the Sonoma County permit desk flags these jobs for fire-hazard zone review. The product selection and cost change substantially from what a straightforward swap would suggest.
Our Main Windsor Services
We handle three core services for Windsor homeowners, each with its own dedicated local page below.
Window Replacement in Windsor
Window replacement in Windsor means pulling out aging aluminum-frame sliders or failed-vinyl double-hungs and installing units that handle both thermal performance and, frequently, WUI fire-code compliance. We measure every opening, check permit requirements for your specific neighborhood, and recommend from our eight manufacturer brands based on what your home actually needs. Our crews protect floors, furniture, and any pets on site, and we explain the full written price before touching a single window. Window Replacement in Windsor
Window Installation in Windsor
New window installation in Windsor covers additions, ADUs, garage conversions, and new construction where fire-rated glazing may be required from the start. We coordinate with your contractor or architect on rough openings, flashing details, and inspection scheduling. The same C.A.R.E. values apply: Clean up like it’s our own home, Ask before moving anything, Respect your time and quiet hours, Explain the price before the work. Window Installation in Windsor
Door Installation in Windsor
Door installation in Windsor addresses the warped and gapped builder-grade exterior frames that dry heat has damaged over decades. We install fiberglass and steel entry systems, patio doors, and WUI-compliant exterior doors with proper weather sealing and hardware. Every job gets the 365-Day Done Right Promise, and our background-checked, uniformed technicians arrive with shoe covers and drop cloths already in hand. Door Installation in Windsor
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 Windsor
We carry PGT, CGI, CWS, and ViewLux among our eight manufacturer brands, with parts and hardware stocked for common Windsor configurations including fire-rated and tempered-glass units. Most non-specialty orders arrive within two weeks, and we coordinate delivery around your schedule to minimize disruption. See our brands for the full lineup.
Pricing for Window Company in Windsor, CA
| Service | Typical range in Windsor |
|---|---|
| Standard vinyl double-hung replacement | $650 – $950 per opening |
| Aluminum-frame slider replacement | $750 – $1,100 per opening |
| WUI-compliant fire-rated window | $1,100 – $1,600 per opening |
| Tempered glass upgrade (required in WUI zones) | $180 – $340 per opening add-on |
| IGU seal failure / fogged glass repair | $280 – $520 per sash |
| Standard fiberglass entry door installed | $1,400 – $2,400 |
| WUI-compliant steel entry door installed | $1,800 – $2,800 |
| Patio door replacement (sliding or French) | $1,600 – $3,200 |
| Interior door replacement (hollow-core upgrade) | $380 – $650 per door |
| Permit and inspection coordination | $180 – $350 (varies by project scope) |
In Windsor, WUI compliance is the biggest price driver, often adding 30 – 50% to what a standard residential swap would cost in a non-fire-hazard zone. We identify this requirement during your free estimate, not after work starts, and we put every dollar in writing before you commit. No invoice surprises, ever.
Neighborhoods We Serve in Windsor
We work across Windsor’s full residential footprint, from the original 1990s subdivisions to the newer town-center blocks. Crews typically schedule Windsor visits on consolidated routes through Sonoma County, with most homeowners getting an appointment within a few business days of calling.
- Shiloh Estates and surrounding hillside-adjacent areas
- Windsor Creek and the original 1990s tract neighborhoods
- Town Green / new urbanist mixed-use blocks
- Fulton Road corridor subdivisions
- Old Windsor village and near-downtown homes
Service Area – Cities Near Windsor
Our crews cover the northern Sonoma County corridor, with Windsor as a central scheduling point. We also serve Healdsburg, CA to the north, Santa Rosa, CA to the south, Sebastopol, CA to the west, and Guerneville, CA in the Russian River valley. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with local crews assigned to each job.
Serving Windsor, CA - Our Local Coverage Area
We’re based in the Windsor 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 Windsor
If your property is in or near Sonoma County’s High Fire Hazard Severity Zone, which covers much of Windsor and nearly all eastern hillside-adjacent neighborhoods, California’s WUI code requires tempered glass and non-combustible frames for replacement windows. We check this during your free estimate and handle permit coordination. Call (562) 478-8017 to confirm what applies to your address.
Most residential jobs run one to three days depending on opening count and whether WUI compliance adds material lead times. We protect floors, furniture, and pets throughout, work around nap schedules when needed, and leave a photo of the clean space before we go. Call (562) 478-8017 for a timeline specific to your home.
No. Our written price before any work starts is a standing rule with no exceptions. The only way the price changes is if you add scope, and even then we discuss it and get your written approval first. Call (562) 478-8017 for your free, fixed-price estimate.
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 Windsor Customers Say
"Quiet, considerate install of several windows. They cleaned the glass and the sills and vacuumed every room. You'd never know a crew had been through. House is quieter and brighter."
- Brent Sakamoto"New patio slider. Clean install, they protected the floor and hauled off the old door. Quiet, polite crew that worked around my work calls without complaint."
- Andre Bellamy"They replaced a big foggy picture window. Careful with the furniture, laid down protection, and left no mess at all. Calm and respectful crew, and the view is clear again."
- Teresa Okafor