Door Installation in Fairfax - Written Price Before Anything Is Ordered

Fast, Reliable Door Installation Across Fairfax

Door installation in Fairfax, CA runs between $1,800 and $6,400 for most entry door replacements, with fire-rated, ember-resistant assemblies required under CAL FIRE’s Very High Fire Hazard Severity Zone mapping sitting at the upper end of that range. Lead times for custom or trimmed-to-fit doors on Fairfax’s older bungalows typically run two to four weeks, though we stock common fire-rated sizes and can often schedule installation within ten days. Call (562) 478-8017 for a written quote specific to your street and your door opening. Our crews know Bolinas Road, the canyon-side lots off Cascade, the flats near Peri Park, and the hillside cottages above downtown Fairfax – not from a map, but from backing trucks up driveways that were poured in the 1940s.

Call (562) 478-8017

Key Takeaways

• Most Fairfax entry door replacements cost $1,800 to $6,400, with fire-rated coastal-spec doors at the higher end.
• Fairfax is a CAL FIRE Very High Fire Hazard Severity Zone – every door we set must meet ember-resistant assembly standards.
• Original 1920s to 1950s wood panel doors on shaded canyon lots rot from the threshold up, and framing damage is common when we pull them.
• We put every price in writing before work starts, and every job carries the 365-Day Done Right Promise.

Why Lightwell Windows & Doors Is Fairfax’s Preferred Door Installation Company

Lightwell Windows & Doors is part of the Cedarwell network, operating to the Cedarwell Care Promise since 2010. Keith Yamada leads our team, and the standard he sets is simple: name what we’ll protect, put the price in writing, and leave the home cleaner than we found it. Fairfax homeowners have told us the same stories for years – crews that tracked dust across oak floors, moved a stroller without asking, or handed over a final number that didn’t match the estimate. We built our process to be the opposite of that. Shoe covers go on at the door. Drop cloths cover floors, furniture, and anything within ten feet of the work area. A photo of the clean-up is taken before the crew leaves. If your kids are napping, we use hand tools instead of power tools where the job allows. If your dog is anxious, we work around the pet’s schedule, not against it.

Our Door Installation team answers calls with a live person, 24 hours a day. When a new install has a problem – a threshold that settles, a latch that sticks – someone picks up the phone. No voicemail maze. And because we operate across Marin County from the Bay Area office, we can route a crew to Fairfax without the scheduling lag of a shop based two towns away. The 365-Day Done Right Promise is stamped on every job: if the finished work isn’t right, we make it right. No debate.

Front Door Replacement in Fairfax

Front Door Replacement in Fairfax means something specific: the door has to hold up to a shaded, fog-bound climate on the north and west sides of a 1920s-to-1950s house, and it has to meet fire-code standards that didn’t exist when the home was built. Most front door replacements here run between $2,400 and $5,800, depending on whether the rough opening is standard or needs custom sizing, and whether the existing framing can be reused or needs repair. We quote a fixed written price before any work starts, and that price holds – no change orders unless you approve them first.

The Rot Problem on Shaded Lots

Fairfax’s bowl-shaped valley traps coastal fog. North- and west-facing elevations stay damp for months. Old wood panel doors wick moisture at the threshold and jamb until the stiles delaminate and the door no longer latches. By the time you see the bottom corner swelling, the rough sill underneath is usually soft too. We plan for this on every Fairfax front door estimate.

Fire-Code Doors That Look Like Front Doors

Because Fairfax sits inside Marin’s State Responsibility Area and is mapped as a Very High Fire Hazard Severity Zone, a replacement front door isn’t optional on fire rating. We specify fire-rated frames with dual-pane tempered or laminated glass and screened vents no larger than 1/16 inch. These assemblies cost more than a standard door, but they’re not optional here – and the Fire Marshal will check.

Door Replacement in Fairfax

Door Replacement in Fairfax covers more than the front entry. We regularly replace side doors, rear doors, French doors, and storm doors on the town’s craftsman bungalows and hillside cottages. A standard single door replacement in Fairfax runs $1,800 to $3,800. A double or French door replacement typically runs $3,400 to $6,400. The price gap comes down to what’s behind the old door: out-of-square rough openings, rotted framing, and fire-rated hardware requirements all factor in.

Out-of-Square Openings Are the Norm Here

Homes built into Fairfax’s hillsides settle. Foundations shift. The rough opening that was squared up in 1938 hasn’t been square in decades. Off-the-shelf doors leave gaps that defeat both the weather seal and the ember-resistant assembly. On canyon-side streets we expect to trim the door or order custom sizing, and we build that into the written estimate from the start.

Moisture Remediation Before the New Door Goes In

When we pull a rotted door on a shaded Fairfax lot, we routinely find the king studs and rough sill have wicked moisture for years. The fix is to sister the framing, set the new door, and seal the threshold with stainless fasteners before any trim goes back on. It adds a few hundred dollars to the job, but skipping it means setting a $4,000 door into a frame that’s already failing.

Trusted Brands We Service in Fairfax

Lightwell carries a curated lineup of eight manufacturer brands, which means the recommendation fits the home – not the installer’s preferred vendor. For Fairfax we frequently specify Therma-Tru for fire-rated entry doors that still look like a front door should, PGT for impact-rated glass on exposed elevations, and CGI for homes facing the steepest canyon slopes where wind-driven embers are a real concern. We stock common latches, thresholds, and fire-rated hardware locally for Fairfax customers, so a follow-up adjustment doesn’t wait on a parts shipment from the East Coast. Door Installation in Fairfax is a job we know down to the street level. If your door faces north or west on a shaded street, we already know what we’ll find before we pull it.

Common Door Installation Problems We See in Fairfax Homes

• Rotted thresholds and soft king studs. On shaded canyon-side streets off Bolinas Road and Cascade, we pull swollen 1940s wood panel doors and find the rough sill framing underneath has been wicking moisture for decades and gone soft. The door wasn’t just sticking – the structure holding it was failing.
• Corroded fasteners and stained slabs. Standard galvanized or zinc hardware corrodes fast in the fog belt. We’ve seen thresholds rust through and loosen the jamb within a few seasons, leaving rust stains on the concrete slab. Fairfax doors need stainless fasteners and marine-grade thresholds.
• Off-the-shelf doors that don’t seal. The rough openings on 1920s and 1950s hillside bungalows are rarely square. A stock door leaves visible gaps at the corners, which kills the weather seal and defeats the fire-rated assembly Fairfax requires. We trim or order custom.
• Wood panel doors that delaminate and stop latching. Long periods of shade and fog mean north- and west-facing wood doors absorb moisture until the stiles split and the door no longer closes cleanly. Homeowners think the latch is the problem; the problem is the door itself.

Pricing for Door Installation in Fairfax, CA

We Also Serve Cities Near Fairfax

Our Fairfax crews also route to San Anselmo, Kentfield, San Rafael, and Larkspur. The fire-code and moisture conditions shift between these towns – San Rafael’s flats get more sun, San Anselmo shares Fairfax’s shaded valleys – so we spec each job to the street, not the county. Call (562) 478-8017 to schedule.

FAQs About Door Installation in Fairfax