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 Los Altos, CA
Window and door work in Los Altos comes with a different set of expectations than almost anywhere else on the Peninsula. The homes here skew older, the lots are generous, and the sunlight hits glass hard in the summer. Juniper Windows & Doors handles window replacement, window installation, and door replacement for Los Altos homeowners who want a written price before any work starts, backed by our 365-Day Done Right Promise. Call (682) 281-2168 any time – a real person picks up.
Why Los Altos Homes Are Different
Los Altos is a city of mature trees, wide streets, and houses that span from 1950s ranch builds to newer customs, and that age range matters when you’re swapping glass or doors. Many of the older homes still carry original single pane aluminum windows with high U-factors, which means real heat gain in summer and drafts in winter. We also see a fair number of mid century sliders and side entry doors that were never flashed properly. When you replace those, the opening often needs reframing and fresh waterproofing, not just a one-for-one swap.
The terrain plays a role too. Los Altos sits on the east slope of the Santa Cruz foothills, so some streets get strong afternoon sun while shaded lots deal with more moisture. That affects finish choices: darker exterior colors and solid wood frames need more care in direct sun, while fiberglass and vinyl hold up with less maintenance. And because so much of Los Altos is covered by mature canopy, skylight-adjacent work and glass sizing often hinge on how much filtered light actually reaches the room.
Then there’s the HOA factor. Parts of central Los Altos, especially newer pockets and planned developments, have design review boards that need to sign off on window styles and door finishes before installation day. We’re used to providing spec sheets and finish samples for those submittals.
Our Main Los Altos Services
Most Los Altos homeowners call us for one of three things: swapping tired windows for better glass, getting new construction windows into a renovation, or replacing a worn entry or patio door. Each has its own dedicated Los Altos page with local pricing and details.
Window Replacement in Los Altos
Replacing windows in Los Altos usually means pulling older aluminum or faded vinyl units and putting in double pane, low-e glass that fits the existing openings. The two things that surprise people most are how much heat the old glass was letting in, and how much quieter the house gets afterward. We measure every opening down to the eighth of an inch, because a 1970s opening is never perfectly square. Full details, including line item pricing, are on our Window Replacement in Los Altos page.
Window Installation in Los Altos
For new builds, additions, and remodels in Los Altos, window installation is a different animal than replacement. You’re working from rough openings, which means the flashing, leveling, and sealing sequence has to be dead right or water finds its way in over time. We install PGT, CGI, CWS, and ES Windows units with U-factor and impact ratings suited to the Peninsula climate. The full scope and what it costs lives on our Window Installation in Los Altos page.
Door Replacement in Los Altos
Los Altos doors take a beating from sun and seasonal temperature swings, and an old door is often the single biggest air leak in the house. We replace front entries, side doors, and sliders with Therma-Tru and other lines that seal properly and hold their finish. A door replacement in Los Altos often turns into a reframing job because the original rough opening has settled or rotted at the threshold. See pricing and the steps involved on our Door Replacement in Los Altos 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 Los Altos
We carry PGT, CGI, CWS, and ES Windows lines, with a wide selection of Therma-Tru and ViewLux door products available for Los Altos jobs. Ordering directly through our brands means we’re not waiting on a third party shelf, which keeps lead times shorter and gives us direct access to factory support when a warranty claim does come up.
Pricing for Window Company in Los Altos, CA
Here’s where the pricing typically lands in Los Altos. These are installed ranges for the most common sizes and configurations.
| Service | Typical range in Los Altos |
|---|---|
| Vinyl window replacement (per window) | $350 – $750 |
| Aluminum window replacement (per window) | $450 – $900 |
| Wood window replacement (per window) | $750 – $1,400 |
| Impact rated window (per window) | $900 – $1,700 |
| Full house window replacement (10 – 15 windows) | $8,000 – $22,000 |
| New construction window installation (per window) | $300 – $700 |
| Exterior door replacement (single door) | $1,100 – $3,200 |
| Patio sliding door replacement | $1,800 – $4,500 |
| French door replacement | $2,400 – $5,600 |
| Interior door replacement (per door) | $250 – $600 |
In Los Altos, price gets pushed up by larger-than-standard openings, older framing that needs correction, and higher-end finish choices like wood interiors or custom colors. Every job gets a written, line item price before a single screw turns, and that number doesn’t move once the work starts.
Neighborhoods We Serve in Los Altos
We work across all of Los Altos, from the flatter central blocks up into the hillier edges. Here are just a few of the neighborhoods we’re in regularly.
- North Los Altos
- South Los Altos
- Old Los Altos
- The Highlands
- Los Altos Hills
Response across Los Altos is quick: most estimates can be scheduled within a couple of business days, and our technicians arrive with a live location ping so you know exactly when they’ll pull up.
Service Area – Cities Near Los Altos
We also serve the surrounding communities, including Mountain View, CA, Stanford, CA, Palo Alto, CA, and Menlo Park, CA. If you’re right on the Los Altos border, dispatch and scheduling are coordinated from our San Francisco Bay Area office, and the crews serving Los Altos work locally.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Most estimates in Los Altos are scheduled within two to three business days. You’ll get a written quote on the spot, with line items, and that price holds.
We’ll provide whatever your HOA needs for design review: spec sheets, finish samples, glass ratings, and measurements. Most Los Altos associations approve our submissions without issue.
For replacements that match the existing opening, Los Altos usually doesn’t require a permit. When the project does call for one, we pull it and handle the inspection from start to finish.
Ready to get a number in writing? Call (682) 281-2168 for a free Los Altos estimate, and we’ll have a real person on the line.
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 Los Altos 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.