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 Fairfax, CA
Window and door replacement in Fairfax, CA typically runs $800 – $2,400 per opening depending on material, fire-code requirements, and the condition of hidden framing. Most Fairfax jobs take 1 – 3 days once work begins, though hillside access and non-standard rough openings in the town’s older bungalows often extend the initial assessment. We’re Lightwell Windows & Doors, and we serve Fairfax from our San Francisco Bay Area dispatch office with crews who know the valley’s moisture problems and CAL FIRE ember-resistant assembly codes by heart. Call (562) 478-8017 to schedule your free estimate.
Why Fairfax Homes Are Different
Fairfax sits inside Marin County’s State Responsibility Area and is mapped as a Very High Fire Hazard Severity Zone by CAL FIRE. Every window and door replacement must comply with ember-resistant assembly standards: dual-pane tempered glass, screened vent openings no larger than 1/16 inch, and fire-rated frames in applicable zones. The town’s bowl-shaped valley traps coastal fog and shade, accelerating wood rot in the original single-pane wood-sash windows standard on its 1920s – 1950s bungalows. This combination of fire-code upgrades and moisture remediation distinguishes Fairfax jobs from those in flatter, sunnier neighboring towns like San Anselmo.
The housing stock here is dominated by craftsman bungalows and hillside cottages on steep, narrow canyon lots. Non-standard rough openings and out-of-square frames set into hillside foundations are routine, making off-the-shelf replacement units a poor fit. On shaded canyon-side streets, we regularly find king studs and rough sill framing that have wicked moisture for decades and are structurally compromised, turning a quoted window swap into a same-day framing repair before any new unit can be set. Annual rainfall frequently exceeds 40 inches, so proper pan flashing, sill slope, and vapor-barrier detailing are non-negotiable.
Our Main Fairfax Services
Most Fairfax homeowners call us for one of three jobs, each shaped by the town’s unique combination of fire code, moisture damage, and hillside construction.
Window Replacement in Fairfax
We remove rotted wood-sash single-pane units and install dual-pane tempered assemblies that meet CAL FIRE ember-resistant standards. Because the valley traps fog on north- and west-facing elevations, we inspect every rough opening for hidden framing damage before quoting a final price. Our crews carry trimmed-to-fit options for the non-standard openings common in 1920s – 1950s Fairfax bungalows. Window Replacement in Fairfax
Window Installation in Fairfax
New window installation in Fairfax means fire-rated frames, 1/16-inch screening, and vapor-barrier detailing that accounts for 40-plus inches of annual rain. We work with hillside foundations that shift and settle, so every opening gets checked for square and level before the unit goes in. Shoe covers and drop cloths protect your floors, and we photograph the clean-up before leaving. Window Installation in Fairfax
Door Installation in Fairfax
Fairfax door installation often involves replacing panel doors that were never engineered for persistent dampness, with fire-rated entry assemblies and moisture-resistant thresholds. Steep lot access can complicate delivery of larger units, so we measure access paths during the estimate visit. Our written price covers the full scope, including any framing repair we discover after removing the old unit. Door Installation in Fairfax
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 Fairfax
We carry PGT, CGI, CWS, and ES Windows products, with fire-rated and coastal-grade options stocked for Fairfax’s dual requirements. Most custom orders arrive within 2 – 3 weeks, and we coordinate delivery around hillside access constraints. See our brands for the full lineup.
Pricing for Window Company in Fairfax, CA
| Service | Typical range in Fairfax |
|---|---|
| Single window replacement (standard opening) | $800 – $1,400 |
| Single window replacement (custom/trim-to-fit) | $1,200 – $2,000 |
| Window replacement with hidden framing repair | $1,600 – $2,800 |
| New window installation (new construction opening) | $900 – $1,600 |
| Fire-rated window upgrade (CAL FIRE zone) | $1,400 – $2,400 |
| Standard entry door replacement | $1,200 – $2,200 |
| Fire-rated entry door installation | $1,800 – $3,200 |
| Patio door replacement (sliding or French) | $2,000 – $3,800 |
| Full-home window package (8 – 12 openings) | $8,000 – $16,000 |
| Permit and inspection coordination | $200 – $450 |
Prices in Fairfax run toward the higher end of these ranges when we find compromised king studs or rough sills behind rotted units, which is common on shaded canyon-side streets. We put every price in writing before any work starts, with no change orders for conditions we can reasonably predict during the estimate visit.
Neighborhoods We Serve in Fairfax
We work across Fairfax’s hillside neighborhoods, from the central downtown flats to the canyon roads above. Crews dispatch from our San Francisco Bay Area office, and most Fairfax appointments are scheduled within a few days of your call.
- Downtown Fairfax
- Peri Park area
- Bolinas Park neighborhood
- Cascade Canyon
- Deer Park
Service Area – Cities Near Fairfax
Our crews serve the full central Marin corridor. We regularly schedule estimates in San Anselmo, CA, Kentfield, CA, San Rafael, CA, and Larkspur, CA, with routing that keeps Fairfax homeowners from waiting when a nearby job finishes early.
Serving Fairfax, CA - Our Local Coverage Area
We’re based in the Fairfax 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 Fairfax
Yes. Fairfax requires permits for all window and door replacements in Very High Fire Hazard Severity Zones, and we coordinate the application, inspection scheduling, and sign-off as part of every job. Call (562) 478-8017 and we’ll walk through what your specific project triggers.
We typically schedule Fairfax estimates within 3 – 5 business days, with flexibility for hillside access constraints and weather-dependent exterior work. A live person answers the phone 24/7 to book your appointment.
Some Fairfax neighborhoods have design guidelines that restrict frame color or visible hardware style. We review your HOA documents during the estimate and specify compliant options from our PGT, CGI, CWS, and ES Windows lines so there are no surprises at inspection.
Ready to price your project? Call (562) 478-8017 to schedule your free estimate. We’ll put a written price in your hands before any work starts, and every job carries our 365-Day Done Right Promise.
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 Fairfax 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