Window Replacement in Fairfax - Free In-Home Measure, Written Price

Fast, Reliable Window Replacement Across Fairfax

Window replacement in Fairfax runs $850-$2,900 per window for most homes, depending on whether you need a full-frame job or an insert, and whether the opening has to meet WUI fire-code requirements. We serve all of 94930, from the flats along Sir Francis Drake Boulevard up to the hillside streets off Bolinas Road and Cascade Drive. If you call (888) 635-0804, a real person answers, and we’ll schedule a free estimate at your Fairfax home, measure the openings twice, and put both warranty layers in writing before any work begins.

Call (888) 635-0804

We know what the canyon does to windows. We know which sashes rot first. And we know what the Town of Fairfax building department will flag when your permit comes across the desk.

Why TruePane Windows & Doors Is Fairfax’s Preferred Window Replacement Company

Dale Kessler founded TruePane in 2008 on a rule that still governs every install: if the pane is not true, the job is not done. That rule matters in Fairfax because the town’s dual burden, canyon damp and WUI fire code, punishes sloppy work faster than almost anywhere in Marin. We’ve pulled permits through the Town of Fairfax enough times to know that a standard vinyl window that passes in San Rafael gets flagged here for fire-rated glazing. We spec accordingly from the first visit.

Our crews are background-checked and uniformed. They measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves your driveway. Fairfax homeowners have trusted us with bungalows on Cascade Drive, hillside cabins near Deer Park, and cottages off Bolinas Road, plus sliding and patio door projects in Fairfax. The work holds up because we build for the moisture and the fire code, not just the energy score.

We’re part of Window Replacement in Fairfax, and our Window Replacement team handles everything from single-sash swaps to full-frame jobs on 1920s craftsman homes. Dispatch for our Fairfax work is coordinated from our San Francisco Bay Area office, but the crews who show up know this town’s streets, its building inspector, and its microclimates.

Our Window Replacement Services in Fairfax

Full Frame Replacement

Full-frame replacement in Fairfax typically runs $1,400-$2,900 per window. We pull the entire old unit, jamb and all, and set a new frame that’s built for canyon moisture. In the Very High Fire Hazard Zone, which covers much of Fairfax, this is the only reliable way to get a WUI-compliant assembly, because you’re not trying to marry fire-rated glazing to a rotted 1940s frame. It’s also the right call when the bottom rail has turned to sponge from redwood canopy drip.

Insert Window Replacement

Inserts run $850-$1,700 per window in Fairfax for openings where the existing frame is still square and sound. That qualifier matters here. We see plenty of frames that look fine on the interior but are soft at the jamb once you pull the trim. If the frame’s gone, an insert buys you a few years, not thirty. We’ll tell you straight which one your house needs.

Storm Window Replacement

Storm windows in Fairfax aren’t about hurricanes. They’re about condensation, draft control, and protecting an original wood sash you want to keep. We service and replace storm units on historic bungalows where the interior sash is worth saving and the exterior storm does the heavy lifting against fog and damp. Expect $400-$900 per storm unit, more if the hardware’s been rusted through by decades of canyon air.

Energy-Efficient Upgrade

Energy-efficient windows in Fairfax mean low-E coatings, argon fills, and frames that won’t wick moisture. Typical cost runs $1,000-$2,200 per window. The payoff in this climate isn’t just the utility bill. It’s the comfort of a north-facing room that stops feeling clammy in July, and windows whose seals don’t fog over in their fifth year because the edge sealant was specced for constant moisture and temperature swings.

Trusted Brands We Service in Fairfax

We’re an authorized installer for, PGT, CGI, and ES Windows, among others. For Fairfax homes in the WUI zone, PGT and CGI make impact-rated lines that satisfy fire-resistance requirements while handling the damp. ES Windows builds a steel-reinforced frame that holds its line on hillside cottages where the ground shifts. We quote manufacturer lines side by side on paper so you see exactly what each option costs and what each warranty covers.

Common Window Replacement Problems We See in Fairfax Homes

• Rotted bottom rails and jambs. Persistent canyon fog and redwood drip keep north-facing sashes wet for months at a stretch. The lower rail is usually first to go, followed by the jamb at the sill.
• Fogged insulated glass units. Sealants fail early here when they’re exposed to constant moisture and wide temperature swings. Once argon leaks out, the glass fogs and the unit loses its thermal value.
• Vinyl frames that warp or crack under radiant heat. In the Very High Fire Hazard Zone, standard vinyl doesn’t hold up. Tempered or fire-rated glazing with a reinforced frame is what the code demands, and for good reason.
• Racked frames on hillside foundations. Fairfax homes on slopes settle. A window installed square in a shifting opening will bind in the corner and leak air within a few seasons unless the frame’s shimmed and flashed for movement.

On a 1940s cottage off Cascade Drive, we pulled a double-hung whose sash had rotted through at the jamb. Redwood canopy drip had kept the bottom rail wet for decades, and the insulated glass unit showed early seal failure. We replaced it with a full-frame Marvin unit using low-E glass and stainless flashing tape, then rehung the original trim to match the bungalow’s craftsman lines.

That job, like most in Fairfax, came down to spec. Cheap inland-spec vinyl would have passed a visual inspection and failed this climate within five years.

Pricing for Window Replacement in Fairfax, CA

We Also Serve Cities Near Fairfax

TruePane replaces windows across Marin. The same crews serve Fairfax, San Anselmo, Kentfield, San Rafael, and Larkspur. If you’re one canyon over, the fire-code layer often changes, and we’ll tell you exactly what your address requires before you pay for a spec that won’t pass.

FAQs - Window Replacement in Fairfax

Window replacement and glass railing systems in Fairfax aren’t one-spec-fits-all jobs. The canyon decides the materials. Your house, its age, its side of the hill, and its place on the fire-hazard map all shape the right window. We’ll measure twice, quote the manufacturers on paper, and register both warranty layers before the truck leaves your driveway.

Call (888) 635-0804 to schedule your free estimate. A live person answers, day or night. We’ve been doing this work for over forty years, and we’ll be in town when you need us again.

Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Fairfax with window replacement done right.