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AfterFast, Reliable Door Replacement Across San Mateo
Door replacement in San Mateo, CA runs anywhere from $550 for a basic interior slab swap up to $4,800 or more for a full exterior entry system with sidelites and a premium fiberglass slab. We’re Juniper Windows & Doors, and we’ve worked on homes from Hayward Park to Baywood-Aragon for over two decades. If your door is dragging on the sill, letting fog-season drafts through, or simply looks tired every time you pull into the driveway, call (682) 281-2168 and we’ll scope the job in writing before anything gets ordered.
Why Juniper Windows & Doors Is San Mateo’s Preferred Door Replacement Company
San Mateo homeowners call us because we answer the phone. A real person picks up, 24/7, not a voicemail tree. That matters when you’re standing next to a door that won’t latch and you need to know if someone can look at it this week. We schedule from our San Francisco Bay Area office, and our crews work San Mateo neighborhoods every week, so we’re not guessing at your street or your parking situation.
Every job starts with a written price. Not a ballpark, not a “we’ll see once we open it up.” The number is on paper before a single screw turns, and it only changes if the scope changes, which we discuss with you first. That’s the kind of transparency owners like Sean Mackey have built the company on since 2001. Our background-checked, uniformed technicians arrive with a live arrival time you can track, and you get before-and-after photos of the work plus a digital invoice you can pay from your phone.
In San Mateo specifically, that matters because housing stock varies block to block. A 1920s craftsman in San Mateo Park has different jamb conditions than a 1980s townhouse near Hillsdale. We know both, because we’ve replaced doors in both.
Interior Door Replacement in San Mateo
Interior Door Replacement in San Mateo means pulling a hollow-core or solid slab that’s warped, cracked, or misaligned and setting a new one in its place, often with fresh hinges and hardware. We see it most in older homes along Alameda de las Pulgas and in the Eichler-heavy neighborhoods west of El Camino Real, where original slab doors have been painted, bumped, and swollen for decades until they no longer close without a shoulder.
For a standard interior door replacement in San Mateo, budget $550 to $950 including the slab, hinges, install, and haul-away of the old unit. That range covers a hollow-core or solid-core pre-hung door in a standard 30″ or 32″ opening. If you’re replacing multiple bedrooms at once, the per-door price drops because the crew’s already there and the setup work gets amortized.
What Gets Replaced During the Job
Most of the time we replace the slab, hinges, and any casing that was damaged during removal. If the existing jamb is square and solid, we keep it. If the jamb legs are twisted or the header has sagged, that’s a structural conversation, and we show you photos before we do anything.
Signs It’s Time to Replace an Interior Door
A door that scrapes the floor at the top or bottom of the swing, a latch that doesn’t line up with the strike plate even after adjusting, or a slab that’s visibly bowed. In San Mateo’s older homes, we also find interior doors that have been trimmed badly by previous owners to clear flooring that’s since been replaced, leaving a gap at the bottom you can feel when the heat kicks on.
Interior Door Installation in San Mateo
Interior Door Installation in San Mateo refers to a brand-new rough opening or a new pre-hung unit where no door existed before, which is common when a carport gets converted to a bedroom near the San Mateo Caltrain corridor or when a dated home gets a hallway reconfiguration during a remodel. This is more than swapping a slab; it’s framing, leveling, trimming, and finishing, and it has to pass a City of San Mateo Building Division inspection if the opening is new or the header changes.
Expect $750 to $1,400 for a standard pre-hung interior door installation within an existing opening, including casing and paint-ready trim. If we’re cutting a new opening in a wall, the range moves to $1,500 to $3,200 depending on whether the wall is load-bearing, whether plumbing or electrical needs to move, and whether the floor is slab-on-grade or raised foundation.
Pre-Hung vs. Slab Install
A slab install reuses the existing jamb; a pre-hung install replaces the jamb and door together. Pre-hung costs more in materials and labor but gives you a door that swings perfectly and seals tight, which is why we recommend it for most Baywood and Aragon homes where the original jambs are 50+ years old.
Why We Pull the Permit When It’s Required
New openings, relocated walls, and any change to a header or the building envelope require a City of San Mateo permit. We pull it, schedule the inspection, and take the correction notice on ourselves if anything needs adjusting. The permit is part of the written price; it’s not a surprise line item at the end.
Trusted Brands We Service in San Mateo
We stock and install Therma-Tru, PGT, and ViewLux, and we service doors from CWS and other lines already in San Mateo homes. That matters here because a surprising number of Peninsula homes have original or early-2000s entry systems from brands that are no longer carried by local suppliers. We can source the weatherstripping, thresholds, and glass for those units, or we’ll quote a full replacement with a brand we know will last in salt-tinged Bay air. Our San Mateo customers get local parts availability and fast turnaround because we keep common hardware and seals on our Bay Area trucks.
Common Door Replacement Problems We See in San Mateo Homes
- Fog-driven swell and rot at exterior jambs. San Mateo’s marine layer and winter rain run right up against the Coast Range, which means exterior door frames see moisture almost year-round. Homes in Hayward Park and Shoreview regularly show soft, swollen jambs where a fiberglass or steel slab has been set into an untreated wooden rough opening, and the door starts dragging within a few seasons.
- Termite and dry-rot damage behind the casing. San Mateo County is termite territory, and older homes near the creeks and along the Bay edge often have hidden damage behind the door trim. If you’re replacing a door because it sags or won’t latch, we check the jamb and framing before we set anything new. Setting a new slab into termite-eaten wood is a guaranteed callback.
- Seismic bracing and header sag. California building code requires lateral anchorage that you won’t find on a door that was hung in the 1960s. Older openings in the San Mateo Park and Beresford neighborhoods sometimes have undersized headers that have settled, and the door rubs at the top corner. We sister framing and add the strapping a City of San Mateo inspection wants to see.
- Heavy slabs dropped into openings not sized for them. A solid-core or impact-rated door weighs more than the hollow original, and the header, jamb, and hinges all have to carry that weight. On Bay-facing blocks in Shoreview, wind loads hit a broader door face harder, and a heavier slab puts more strain on substandard framing. We check design pressure and header capacity before we set anything heavy.
Pricing for Door Replacement in San Mateo, CA
Here’s what San Mateo homeowners actually pay. A basic interior slab replacement runs $550 to $950. A pre-hung interior door installation lands between $750 and $1,400. Exterior entry doors start around $1,200 for a builder-grade steel unit and run $2,500 to $4,800 for a Therma-Tru fiberglass system with a rot-resistant jamb, insulated glass, and fresh hardware. Look at $5,000 to $8,000 for a full exterior entry with sidelites and premium glass package.
What moves the price: whether we’re reusing the jamb or replacing it, whether the rough opening needs reframing, glass and finish choices, and whether a permit and inspection are required. The written price we give you includes the permit if one’s needed. Call (682) 281-2168 to schedule a free estimate and get an exact number in writing before you sign anything.
We Also Serve Cities Near San Mateo
Our crews work the whole mid-Peninsula, so if you’re in San Mateo or just over the line in Burlingame, Belmont, Millbrae, or San Carlos, the same Door Replacement team can handle your job with the same written pricing and 365-Day Done Right Promise.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
Yes, if the rough opening changes size, the header is altered, or the door is on the building envelope and the City of San Mateo Building Division classifies the work as more than a like-for-like swap. A straight slab replacement in the same opening typically does not require a permit. We pull the permit and schedule the inspection when one is required, and it’s in the written price. Call (682) 281-2168 and we’ll tell you up front whether your specific job needs one.
A standard interior door replacement takes one day on site. A full exterior entry system with sidelites and a new jamb usually takes two days, including flashing and trim. If framing work or a rough opening change is needed, expect three to four days, plus whatever the City of San Mateo inspection calendar adds. We schedule to your availability and we don’t leave a hole in your wall overnight. Call (682) 281-2168 for a firm timeline on your specific job.
No. San Mateo sits in San Mateo County, outside both the Florida HVHZ (High-Velocity Hurricane Zone) and the state’s wind-borne debris regions, so door replacement here is driven by the City of San Mateo’s Building Division plan review and California seismic and energy rules rather than by Miami-Dade NOA or Florida Product Approval papers. That means a San Mateo door permit hinges on Title 24 prescriptive glazing requirements and CA Building Code anchorage, not a wind-mitigation product approval packet. We spec accordingly, so you’re not paying for a South Florida wind test you don’t need.
Three things: hidden framing damage we couldn’t see until the old unit came out, the condition of the rough opening, and unforeseen changes like a header that needs sistering or a jamb that’s been chewed by termites. We don’t guess and we don’t surprise you. If we open the wall and find a problem, we stop, show you photos, and give you a written change order before any additional work proceeds. The baseline price never changes unless the scope changes with your approval.
Yes. We service and replace doors from Therma-Tru, PGT, ViewLux, CWS, CGI, and ES Windows, and we can source hardware and weatherstripping for many older brands still present in San Mateo’s housing stock. If the door itself is sound and the issue is a sagging slab, worn seals, or a misaligned latch, we can often repair it instead of replacing it. Call (682) 281-2168 and tell us what brand is stamped on your current door; we’ll let you know what’s possible.
Written by Sean Mackey, Owner at Juniper Windows & Doors, coordinating door replacement crews serving San Mateo from our Bay Area office.