Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Door Replacement Across Mill Valley
Door replacement in Mill Valley usually means working on a hillside, not a flat suburban lot. Most homes here sit on slopes, and the original frames in pre-1950 houses are rarely square or standard depth, so a door swap is seldom just a swap. We schedule every Mill Valley job after a site check, give you a written price before anything starts, and our techs arrive with a live arrival time you can track. Call (682) 281-2168 to get yours.
Why Juniper Windows & Doors Is Mill Valley’s Preferred Door Replacement Company
Sean Mackey leads our crews, and he’s the reason we write the scope the way we do. Mill Valley doors fail differently than doors in Corte Madera or Larkspur: the ground moves, the fog sits on west-facing entries, and the rough openings in older Sycamore Park and Homestead Valley homes were framed by hand. We know to check the threshold height against the interior floor before ordering anything, because a door that swings into a step is a call-back waiting to happen.
Every Juniper job, including door replacement in Mill Valley, runs on the 365-Day Done Right Promise: if something isn’t right within a year of install, we come back and fix it. That’s parts and labor, in writing. We also keep a live dispatch line answered by a person, 24/7, so when a Mill Valley homeowner calls about a sticking door or a fogged sidelite, someone answers and schedules. Not a callback queue.
We’re the windows-and-doors specialist inside the Relay Home Co. family, and we carry eight product lines including PGT, CGI, CWS, and Therma-Tru. That matters up here because WUI code and slope conditions change the spec. We’re not locked into one manufacturer’s catalog. Crews are background-checked and uniformed, so you know exactly who’s at your door on East Blithedale or Cascade Drive.
Interior Door Replacement in Mill Valley
Interior door replacement in Mill Valley starts with measuring the existing rough opening, not just the slab. In houses built before 1950, walls are often thicker than the 4 9/16 inches a big-box prehung door assumes, and the jambs were milled to fit. A typical interior door replacement in Mill Valley runs $350 to $750 per opening for a standard prehung with trim, and $700 to $1,300 when we’re rebuilding a jamb, adjusting the casing, or working with a wall that’s out of plumb. You’ll get a written price before we order anything, so the number doesn’t move at the door.
Prehung and Slab Replacements
If the existing jamb is sound and square, we can hang a new slab and re-mortise hinges in a few hours. We stock common widths, and for older Mill Valley homes we order custom widths from our supplier rather than forcing a door into an opening that was framed at 29 inches.
Jamb Rebuilds and Casing Match
When water damage or settling has compromised the jamb, we pull the old frame and sister the studs. Our finish carpenters match original casing profiles, including the flat-stock fir trim common in Mill Valley bungalows, so the new door doesn’t look like an afterthought.
Interior Door Installation in Mill Valley
Interior door installation in Mill Valley often means working around existing trim and flooring that homeowners want to keep. When we install a new prehung interior door, the job includes shimming the jamb for an even reveal, setting the hinge screws into studs (not just the jamb), and adjusting the stop so the door latches without rubbing. Mill Valley pricing for interior door installation typically lands between $300 and $650 per opening when the rough opening is workable, and $650 to $1,200 when we’re cutting a new opening, adding blocking, or relocating a wall switch. The written quote you get covers the labor, the door, the hardware, and the trim.
Pocket and Barn Door Work
Pocket doors come up a lot in Mill Valley homes where hallway space is tight. We convert swinging doors to pocket doors when the wall cavity allows, and we install bypass and barn doors in bedrooms and closets. The hardware we use is rated for daily use, and we mount the track into the header, not into drywall anchors.
Hardware and Hinge Upgrades
Most installs include new hinges and a fresh strike plate, because old brass hardware on a new door looks wrong and usually doesn’t align. We’ll match your existing hardware finish or upgrade you to satin nickel or matte black, and we mortise everything so the door closes flush.
Trusted Brands We Service in Mill Valley
We install and service doors from PGT, CGI, CWS, ES Windows, Therma-Tru, and ViewLux, and we keep local stock access for Mill Valley customers so lead times stay short. WUI-compliant exterior assemblies from PGT and CGI are something we spec regularly here, especially on remodeled homes in the interface zone. For interior work, Therma-Tru fiberglass and ViewLux patio sliders give Mill Valley homeowners options that hold up to coastal air without warping. Our Door Replacement team can walk you through which product fits your opening, your exposure, and your budget.
Common Door Replacement Problems We See in Mill Valley Homes
- Out-of-square rough openings in pre-1950 homes. The original framing has settled or was never square to begin with. A prehung door installed without correction will bind at the top or leave a wedge-shaped gap at the latch side.
- Threshold height mismatch on sloped lots. Exterior landings sink or were poured lower than the interior finish floor. A new door hung at the old height leaves a trip hazard at the sill and a draft under the sweep.
- WUI code issues on exterior replacements. Mill Valley falls under Wildland-Urban Interface rules, so exterior door replacements tied to a permitted remodel must use compliant glazing and assemblies. Miss that and the final inspection flags it.
- Fogged glass in west-facing entries. Marine air and afternoon sun work on sealed glass units in Sausalito-facing exposures. We replace the glass pack or the full door panel depending on the frame condition.
Pricing for Door Replacement in Mill Valley, CA
The honest range for door replacement in Mill Valley is $350 to $750 for a standard interior prehung, $700 to $1,300 for an interior opening that needs jamb or casing rebuild, and $1,800 to $4,200 for an exterior entry with WUI-compliant glazing, custom threshold work, and a new weatherstripping system. Exterior work on sloped lots in the 94941 zip runs higher when we’re correcting an out-of-level landing or re-flashing the rough opening. Every job gets a written price before work starts, and the 365-Day Done Right Promise covers parts and labor for a full year. Call (682) 281-2168 to schedule a free estimate.
We Also Serve Cities Near Mill Valley
We serve Mill Valley plus the surrounding communities of Corte Madera, Larkspur, Sausalito, and Kentfield. If you’re in one of those areas and need Door Replacement in Mill Valley or nearby, the same written-price process and 365-Day Done Right Promise apply. Dispatch coordinates from our San Francisco Bay Area office, and crews serve all five cities locally.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley 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 Door Replacement in Mill Valley
Interior door replacement does not require a permit in Mill Valley when you’re swapping a door in the same opening. Exterior door replacement may require a permit if the project is part of a larger remodel, and because Mill Valley is in the Wildland-Urban Interface zone, the door assembly must meet WUI glazing and construction requirements. We pull permits when the scope calls for them and our work passes Mill Valley inspections. Call (682) 281-2168 and we’ll tell you exactly what your specific project needs.
Your front door sticks in the fall because Mill Valley’s wet season swells the wood frame and jamb, especially on older homes with fir jambs that were already tight before the first rain. The fix is usually a combination of planing the door edge, adjusting the hinge screws, and resealing the threshold so water isn’t wicking into the wood. We handle this as part of our door replacement scope, so the new door gets proper clearance and weatherstripping from day one.
Yes. We match original door trim profiles in Mill Valley bungalows by milling or sourcing casing that matches the existing flat-stock fir or painted profile. In the Sycamore Park neighborhood, we replaced a rotted 1920s fir front entry and retrimmed the interior casing to match the original profile, and the final inspection passed without a correction notice. Your trim won’t look like a patch job.
Expect a site check first, then a written scope and price, then one day for a standard exterior door replacement. On Mill Valley sloped lots, the job often includes re-flashing the rough opening, rebuilding the threshold so the interior and exterior floors meet evenly, and setting a WUI-compliant door assembly if the permit path requires it. You’ll get a live arrival time, photo updates, and a digital invoice you can pay from a link.
Price changes come from conditions we can’t fully see until the old door is out: rotted framing behind the jamb, an out-of-level landing that requires a threshold rebuild, or a wall cavity that’s not deep enough for a standard prehung unit. That’s why we write the scope carefully during the site check and give you the number before any work starts. If we find something unexpected, we document it with photos and tell you the cost before proceeding. Call (682) 281-2168 for a free estimate.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Mill Valley and the San Francisco Bay Area.