Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in San Martin, CA
Juniper Windows & Doors handles window replacement, window installation, and door replacement for homeowners across San Martin, CA. Homes here sit at the southern edge of Santa Clara County, where summer heat pushes glass to work harder and winter mornings bring real temperature swings that expose weak seals and warped frames. If you’re researching what a window or door project should cost in San Martin, call (682) 281-2168 and we’ll give you a straight, written number before any work begins.
Why San Martin Homes Are Different
San Martin is unincorporated, which means most properties are on larger lots with older ranch-style homes, not tight tract housing. Many were built between the 1960s and 1980s, and the original aluminum-frame windows on those houses are now at the end of their service life. We regularly see single-pane glass, failed seals, and wood rot around sills that has been quietly spreading behind stucco for years. The town sits on the valley floor between the Santa Cruz Mountains and the Diablo Range, so it catches both the inland heat and the evening wind that funnels down from the hills. That combination – hot afternoons, cool nights, and steady wind – cycles windows through expansion and contraction every single day, which accelerates seal failure and makes U-factor and air infiltration ratings matter more here than in a mild coastal pocket like Los Gatos. Because San Martin is unincorporated, permitting runs through Santa Clara County rather than a city building department, and we help homeowners navigate that process on every job rather than leaving them to sort out paperwork alone.
Our Main San Martin Services
Most San Martin homeowners call us for one of three reasons: aging windows that are driving up cooling costs, new construction or additions that need windows and doors installed correctly the first time, or a front or patio door that no longer closes, locks, or seals the way it should.
Window Replacement in San Martin
Replacing windows on an older San Martin ranch home usually means pulling aluminum frames out of stucco openings and installing dual-pane units that are actually sized for the rough opening, not just close to it. We work with impact-rated glass from CGI and CWS where wind-borne debris is a concern, and we always explain the U-factor and SHGC numbers in plain language so you know exactly what you’re paying for. The full breakdown of options, local costs, and the written-price process is on the Window Replacement in San Martin page.
Window Installation in San Martin
New window installation in San Martin is common on ADUs, garage conversions, and custom builds that have popped up across the valley in recent years. The job is different from replacement – we’re setting new construction flanges, flashing against wind-driven rain, and making sure the opening is square before any glass goes in. Done wrong, an improperly flashed window in this climate leaks within a season or two. Get the full rundown, including county permit notes and local pricing, on the Window Installation in San Martin page.
Door Replacement in San Martin
Door replacement in San Martin is about more than swapping a slab. Older homes here often have settled in ways that throw door frames out of square, so we measure the rough opening, check the reveal, and fix the frame before a new Therma-Tru or ES Windows entry door goes in. That’s the difference between a door that swings true for twenty years and one that binds in the summer heat. Costs, product options, and what the job involves locally are covered on the Door Replacement in San Martin page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Martin
We service and install windows and doors from CGI, CWS, ES Windows, and ECO Window Systems in San Martin. Because we carry eight product lines through the Relay Home Co. family, we’re not tied to one manufacturer’s lead time – the right window or door is rarely a compromise. See the full list on our brands page.
Pricing for Window Company in San Martin, CA
| Service | Typical range in San Martin |
|---|---|
| Single-hung window replacement (standard size) | $450 – $850 per window |
| Double-hung window replacement (standard size) | $600 – $1,100 per window |
| Casement window replacement (standard size) | $700 – $1,300 per window |
| Sliding window replacement (standard size) | $550 – $1,000 per window |
| Picture window replacement (standard size) | $650 – $1,400 per window |
| Bay or bow window replacement | $2,500 – $6,500 per unit |
| Full-frame window replacement (including trim and flashing) | $900 – $2,000 per window |
| New construction window installation | $800 – $1,700 per window |
| Standard entry door replacement (slab, pre-hung) | $1,200 – $3,000 per door |
| Patio sliding glass door replacement | $2,000 – $5,500 per door |
| French door replacement | $2,400 – $6,000 per set |
| Full-frame door replacement (frame repair included) | $1,500 – $4,500 per door |
What pushes a San Martin price higher than the starting range is usually stucco repair around an old opening, a non-standard rough opening size from an older build, or upgrading to impact-rated glass and a low U-factor frame. Whatever the final number is, we put it in writing before anything starts – no quote that morphs into a surprise invoice at the door.
Neighborhoods We Serve in San Martin
We work throughout San Martin’s residential pockets, from the ranch properties off New Avenue to the homes near San Martin Avenue and the newer builds east of Highway 101. Our crews are dispatched from the San Francisco Bay Area office and typically reach San Martin jobs quickly, with the live arrival time you can track on your phone before we pull up.
- San Martin Avenue corridor
- New Avenue area
- East side near Highway 101
- Foothill Road properties
- Llagas Creek vicinity
Service Area – Cities Near San Martin
If you’re just outside San Martin proper, we also cover the surrounding South County and Bay Area communities. That includes Morgan Hill, CA to the north, Gilroy, CA to the south, and Los Gatos, CA or Campbell, CA for clients closer to the valley’s west side. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving San Martin locally.
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 Window Company in San Martin
We schedule San Martin jobs with a live arrival time you can track, so there’s no four-hour waiting window. Most estimates are booked within a few days, and our crews come directly to the property. Call (682) 281-2168 and we’ll give you a firm arrival time before you commit.
San Martin is unincorporated, so permitting runs through Santa Clara County rather than a city building department. Requirements depend on the scope – replacements that don’t change the opening usually move faster than structural changes. We handle the permit process for you on every job, including inspections.
It’s a written guarantee covering parts and labor for a full year after installation. If something isn’t right, we make it right – no charge, no argument. Every San Martin project includes it, and it’s printed on your paperwork. Call (682) 281-2168 for a free estimate and you’ll see exactly what’s covered before you sign anything.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Martin Customers Say
"Front door looks great and shuts well. The threshold is sealed well and the lock lines up with the strike."
- Rory F."Quote came in the app with options for glass. Easy to compare."
- Vera L."Door replacement. Installer texted when on his way and finished by lunch. Tight and clean."
- Neil B.