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 San Martin
Door replacement in San Martin typically runs $450 – $1,400 for an interior slab or prehung unit, and $1,800 – $5,200 for a quality exterior entry door with installation. Most jobs are completed in one day once we start, with a written price locked before any work begins. Our crews work on San Martin properties regularly, including ranch homes off Llagas Road, Highland Avenue, and the residential pockets east of Highway 101 near San Martin Avenue.
We know this area’s housing stock: 1960s and 1970s ranch builds, newer custom homes on large lots, and a fair number of properties where the original doors have been hanging for decades. That local familiarity means we show up with the right measurements, the right tools, and a plan that accounts for how south-valley moisture and heat affect door frames. Call (682) 281-2168 to talk through your project.
Key takeaways:
- Interior door replacement in San Martin runs $450 – $1,400 installed.
- Exterior entry door replacement runs $1,800 – $5,200 installed, depending on material and glass package.
- San Martin sits in unincorporated Santa Clara County, so exterior door permits run through the County, not a city building department.
- Every job gets a written price before work starts, backed by the 365-Day Done Right Promise.
Why Juniper Windows & Doors Is San Martin’s Preferred Door Replacement Company
Sean Mackey leads our Door Replacement team with the same standard for every job: written pricing, real trade knowledge, and work that holds up. San Martin homeowners call us because we tell them what a job will cost before a single screw turns, and we put that number in writing. No estimate that morphs into a surprise invoice at the door.
Our San Martin customers also get the Relay Visibility Guarantee: a live arrival time you can track, before-and-after photos of the finished work, and a digital invoice you can pay from your phone. We know what it’s like to book a contractor and wait around all day. That’s not how we operate.
Every Juniper technician is background-checked and uniformed. When someone shows up at your San Martin home, you know who they are and why they’re there. And if something about the installation isn’t right, the 365-Day Done Right Promise covers it: parts and labor, in writing, for a full year. We answer our phones live 24/7, so when you call (682) 281-2168, a person picks up.
Interior Door Replacement in San Martin
Interior door replacement in San Martin means pulling an old slab or prehung unit and putting in a new one that fits the existing opening, swings correctly, and matches the home’s other doors. Most of our work here involves replacing hollow-core doors in ranch homes built between the 1960s and 1980s, where the original doors have warped, delaminated, or developed gaps that no amount of hinge adjustment will fix.
Slab vs. Prehung Replacement
A slab replacement keeps your existing jamb and casing. A prehung replacement swaps the entire frame. In San Martin’s older ranch homes, we often recommend prehung because the original jambs have settled out of plumb or taken on moisture damage from south-valley fog and damp winter ground. A new prehung unit gives us a clean, square opening that will hold its alignment.
What It Costs Locally
Interior door replacement in San Martin runs $450 – $1,400 per door, installed. The range covers a basic hollow-core slab at the low end up to a solid-core prehung unit with new casing at the high end. If you’re replacing multiple doors, the per-door labor cost drops because our crew is already on site.
Interior Door Installation in San Martin
Interior door installation in San Martin is the service that makes new construction or a remodel feel finished. We hang the door, set the casing, adjust the reveal, and make sure the latch catches without a rattle. Sean Mackey’s crew handles everything from single-door installs to full-home packages where eight or ten interior doors are being replaced at once.
Finish Work and Hardware
We set the hinges flush, mortise the strike plate for a clean latch, and shim the jamb so the door doesn’t swing open or closed on its own. Hardware mounting is included: knobs, levers, hinges, and strike plates. If you have specific hardware you’ve already bought, we’ll install it during the same visit.
Installation Timing and Sequencing
A typical interior door installation takes one to four hours per door, depending on how much adjustment the existing opening needs. If we’re doing a whole-home package, plan for one to two days. We’ll give you a specific schedule in the written quote, and the Relay Visibility Guarantee means you’ll see live arrival times and photo updates as the work progresses.
Trusted Brands We Service in San Martin
Juniper Windows & Doors carries eight product lines, and for San Martin homeowners we most often recommend Therma-Tru for exterior entry doors, CGI for impact-rated options, and ECO Window Systems for energy-focused upgrades. We stock common replacement parts for these brands, so a door that needs new weatherstripping or a replacement hinge doesn’t turn into a two-week parts-order saga. If you have a different brand installed, we’ll tell you honestly whether it’s worth repairing or replacing, and we’ll give you a written number either way.
Common Door Replacement Problems We See in San Martin Homes
- Swollen jambs from south-valley moisture. San Martin’s winter fog and damp ground wick into door frames over time. We see exterior doors where the jamb has absorbed enough moisture that the door drags on the threshold and won’t latch. The fix usually means a full prehung replacement with proper flashing and sealing, not just a slab swap.
- Non-standard rough openings in older ranch homes. Many San Martin homes built in the 1960s and 1970s have rough openings that are an inch or two off from today’s standard door sizes. A homeowner who orders a replacement slab without measuring jamb depth and plumb ends up with a door that won’t fit. We measure everything before we order anything.
- Fogged or failed glass in entry door sidelites. South-valley temperature swings stress the seals on insulated glass units over time. We replace a lot of sidelite glass and full door units where the glass has fogged between the panes. A new low-E unit restores both the look and the thermal performance.
- Improperly flashed exterior openings. Reusing an old threshold and sill pan on a door exposed to winter moisture means the new unit rots at the bottom rail within a few seasons. We replace the sill pan and re-flash the rough opening on every exterior door install in San Martin, no exceptions.
Pricing for Door Replacement in San Martin, CA
Here are the actual numbers for San Martin, not vague ballparks. Interior door replacement runs $450 – $1,400 per door installed. A new exterior entry door runs $1,800 – $5,200 installed, depending on material: a basic steel door starts around $1,800, a Therma-Tru fiberglass unit with a low-E glass package lands between $2,500 and $3,800, and a custom wood or impact-rated CGI door can push past $5,000. What changes the price is the door itself, the hardware you choose, and whether the existing opening needs structural work like a wider rough opening or new framing. Every quote includes labor, materials, disposal of the old door, and the 365-Day Done Right Promise in writing. Call (682) 281-2168 for a free estimate with an exact line-item price.
We Also Serve Cities Near San Martin
We regularly send Door Replacement in San Martin crews to neighboring communities, too. If you’re in Morgan Hill, Gilroy, Los Gatos, or Campbell, the same written pricing, the same 365-Day Done Right Promise, and the same live-answer phone line apply. We schedule these jobs around our San Martin route, so you still get a specific arrival window and photo updates.
Serving San Martin, CA - Our Local Coverage Area
We’re based in the San Martin 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 Martin
Yes, if you’re replacing an exterior door that changes the size of the rough opening, a permit through Santa Clara County Building Services is required. A like-for-like swap, where the new door uses the same opening dimensions, typically does not need one. We handle the permit paperwork for you when one is required, and we schedule the County inspection as part of the job. Call (682) 281-2168 and we’ll confirm what applies to your specific door.
A typical interior door replacement takes one to four hours per door once work starts. An exterior entry door, including removing the old unit, replacing the sill pan, re-flashing, setting the new prehung unit, and trimming out, takes four to eight hours. Whole-home packages with multiple doors run one to two days. We’ll give you a specific schedule in the written quote before you commit.
Four things: the door material and glass package, the hardware finish you pick, whether the existing opening needs structural changes, and how many doors are being replaced at one time. In San Martin specifically, older ranch homes often have non-standard rough openings that require re-framing, which adds labor. Our quotes break all of this down line by line in writing. Call (682) 281-2168 for your exact number.
Yes. San Martin’s summers hit the high 90s, and a door with a low-E insulated glass unit and proper weatherstripping cuts heat gain at the entry. Our crew replaced a Therma-Tru fiberglass entry at a ranch property off Llagas Road where the original jamb had swollen from damp winter ground, and the homeowner told us the front room held temperature noticeably better within the first week. That’s the kind of difference a properly installed door makes.
Nothing, if the job is scoped correctly up front. We send a technician to measure the opening, check the jamb, and identify any hidden issues like rot or non-standard framing before we quote. If we open a wall and find something genuinely unexpected, like termite damage, we stop work, show you photos, and give you a written change order to approve before we proceed. You’ll never get a surprise invoice at the end. That’s the whole point of a written price.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving San Martin and the surrounding South Valley communities.