Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Sunnyvale, CA
Window and door work in Sunnyvale, CA usually means upgrading 1950s-to-1970s ranch homes and Eichler-inspired builds for stronger seals, better glass, and an easier open. Juniper Windows & Doors handles window replacement, window installation, and door replacement across the city, with a written price locked in before any work begins. If you’re dealing with a fogged dual-pane window, a sliding door that fights you, or an entry door that doesn’t close square anymore, we can walk you through the exact numbers. Call (682) 281-2168 and you’ll get a real person.
Why Sunnyvale Homes Are Different
Sunnyvale’s housing stock runs older than a lot of the surrounding South Bay, and that shapes what we see in the field. Homes near Cherry Chase, Ponderosa Park, and Raynor Park were largely built in the 1960s and 1970s, which means original aluminum-frame windows, single-pane glass, and sliding patio doors with tired rollers. In the summer, those windows bake. Sunnyvale regularly hits the 80s and 90s from June through September, and a west-facing single pane turns a living room into a heat trap. In winter, the same frame leaks. That’s why most of our Sunnyvale jobs start with swapping to dual-pane glass with low U-factors, the number that measures how well a window resists heat movement. Lower U-factor equals a cooler house in July.
Permits come up more often here than homeowners expect. Sunnyvale’s planning department reviews replacement windows when the opening changes, and HOA rules in complexes around Lakewood and Casa de Amigos can dictate frame color and style. We pull the permit and schedule the inspection so you don’t have to manage that thread. Sean Mackey leads the team, and he’s particular about not leaving a homeowner guessing what the inspector will say.
Our Main Sunnyvale Services
Most Sunnyvale homeowners call us for one of three jobs: pulling old windows and installing new ones, fitting windows into new openings during a remodel, or replacing front and patio doors. Each has its own page with local pricing detail, but here’s the quick rundown.
Window Replacement in Sunnyvale
Window replacement in Sunnyvale is usually about getting rid of 50-year-old aluminum frames and single-pane glass. We measure the existing opening, spec a replacement that fits the rough-in, and handle the dry rot around the sill that’s common in older Sunnyvale homes. Expect to choose between a like-for-like retrofit and a full-frame tear-out if the opening’s gone soft. Full glass and frame tear-outs run $900 – $1,400 per window, with retrofit dual-pane replacements landing $500 – $850. We carry impact-rated glass for homes near busy roads like El Camino Real, where wind-borne debris and traffic vibration matter. Full detail is on the Window Replacement in Sunnyvale page.

Window Installation in Sunnyvale
Window installation in Sunnyvale covers new-construction and remodel openings, the kind of work we see on additions in Birdland and along the Central Expressway corridor. The rough opening is new, so the install is a different job: level the frame, shim it square, flash the sill so rain can’t find a path in. Labor-only installations, where the window arrives on-site and we set it, run $300 – $650 per window. When we add the window itself, the total lands between $1,400 – $3,500 per window depending on finish and glass package. The full scope lives on the Window Installation in Sunnyvale page.

Door Replacement in Sunnyvale
Door replacement in Sunnyvale splits into two common requests: front entry doors and sliding glass doors. Entry door jobs usually mean pulling a wood slab that’s swollen from decades of valley heat and rain, then setting a new pre-hung unit with fresh weather stripping. Those run $2,000 – $5,000 installed. Sliding patio doors in mid-century homes get replaced with multi-slide or modern two-panel units, starting around $2,500 and up. If your patio door whistles when the wind picks up off the bay, that’s a seal and roller problem worth knocking out all at once. See the Door Replacement in Sunnyvale page for the full price list.

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 Sunnyvale
We install and service PGT, CGI, CWS, and ES Windows products across Sunnyvale. Most weather-rated parts and seals are stocked locally, which keeps turnaround tight: the right parts arrive without a two-week wait. We back every install with the 365-Day Done Right Promise, in writing. See our brands for the full range of what we work on.
Pricing for Window Company in Sunnyvale, CA
| Service | Typical range in Sunnyvale |
|---|---|
| Entry door replacement | $2,000 – $5,000 |
| Sliding glass door replacement | $2,500 – $7,500 |
| Retrofit window replacement (dual-pane) | $500 – $850 per window |
| Full-frame window replacement (tear-out) | $900 – $1,400 per window |
| Labor-only window installation | $300 – $650 per window |
| Installed window with materials | $1,400 – $3,500 per window |
| Patio door glass replacement | $350 – $950 |
| Exterior door frame repair | $250 – $800 |
What pushes a Sunnyvale job higher is usually the opening. Older ranches around Serra Park sometimes have non-standard window sizes, and wall repairs around rotted sills add labor. Glass packages matter too: impact-rated units cost more than standard dual-pane. Whatever the number ends up, you’ll see it in a written line-item quote before anything starts. No quote that morphs at the door, no change orders you didn’t approve first.
Neighborhoods We Serve in Sunnyvale
We work across the entire Sunnyvale zip codes 94085, 94086, 94087, and 94089. That includes the older pockets and the new-build clusters alike, from Ponderosa Park to Cherry Chase, plus the townhome and condo complexes around Lakewood Village and down toward Ortega Park. Response times vary by traffic, but most Sunnyvale estimates are scheduled on the day you call.
- Cherry Chase
- Ponderosa Park
- Raynor Park
- Lakewood Village
- Birdland
Service Area – Cities Near Sunnyvale
Juniper also runs crews through the neighboring cities along the 237 and 85 corridors. We regularly book window and door jobs in Mountain View, CA, Santa Clara, CA, Cupertino, CA, and Los Altos, CA. If you’re in Edgewood or near the Sunnyvale border with any of those cities, call and we’ll route the nearest crew.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
Most Sunnyvale homeowners can get a written estimate within one to two days of calling (682) 281-2168. We schedule by neighborhood so we’re not crisscrossing the 101 at rush hour. The estimate is free, and the price you’re quoted is the price on the contract.
If the opening changes size or is in an HOA-governed complex, yes, you’ll likely need one. Juniper pulls the Sunnyvale permit, handles the inspection, and passes the final sign-off before we close the job. If no permit is required, we’ll say so in writing.
We serve all of Sunnyvale, from the industrial edge near 94089 down through 94087 and over to the Cupertino border. Calls go to a live person 24/7, and dispatch is coordinated from our San Francisco Bay Area office. The 365-Day Done Right Promise applies to every Sunnyvale job, no exceptions.
Ready to see your numbers? Call (682) 281-2168 for a free estimate, and we’ll schedule a window or door specialist to walk your Sunnyvale home and get you a written price today.
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 Sunnyvale 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.










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