Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Los Altos Hills, CA
Juniper Windows & Doors handles window replacement, window installation, and door replacement across Los Altos Hills, and the work here has a rhythm all its own. The town’s winding roads, large lots, and hillside exposures mean nearly every project involves custom measurements, careful site access, and glass choices tuned to real sun and wind rather than a generic Bay Area default. If you’re researching what this should cost and who can actually pull it off cleanly, call (682) 281-2168 for a written estimate.
Why Los Altos Hills Homes Are Different
Los Altos Hills was deliberately kept rural: minimum lot sizes of one acre, no sidewalks in most areas, and homes tucked behind oaks and along ridgelines. That shapes every window and door job we take on. Many houses sit on sloping ground, which means crane work or hand-carrying materials up a grade is common. Architecture leans heavily toward mid-century moderns from the 1950s and 1960s, along with large custom builds from the 1980s onward, so we frequently replace thin aluminum frames with thermally broken windows that hold up to direct afternoon sun without turning rooms into greenhouses.
Microclimates vary block to block. Homes near the Foothill Expressway corridor get more wind than properties tucked below the hills, and west-facing glass catches harsh late-day sun for months at a time. That’s why we talk about U-factor and solar heat gain coefficient more often in Los Altos Hills than we do in flatter, shadier parts of the Peninsula. We also handle your Los Altos Hills window and door work without the runaround: a written price before we start is standard, never an upsell.
Town code requires permits for any replacement that changes the size of an opening, and many Los Altos Hills homes fall under hillside development rules that add a little review time. The HOA is not the issue it is in some neighborhoods, but the planning desk is real. We pull permits when the job needs them and build that time into the schedule so there’s no surprise stop-work order.
Our Main Los Altos Hills Services
Here’s where Los Altos Hills homeowners usually start: replacing aging glass, and upgrading doors that have warped or lost their seal. Each service has its own Los Altos Hills page with detailed pricing and what to expect.
Window Replacement in Los Altos Hills
Most replacement work we do in Los Altos Hills involves swapping original single-pane or thin aluminum windows for dual-pane units with low-E coatings sized for serious sun exposure. We measure every opening down to the eighth inch, because hillside homes settle and frames are rarely square after 30 or 40 years. The product line matters here: impact-rated and thermally efficient glass from manufacturers like CGI and CWS handles the wind and heat without needing a seasonal adjustment. Homeowners on ViewLux and similar contemporary builds benefit from frames that preserve narrow sightlines while delivering modern thermal performance. See Window Replacement in Los Altos Hills for full pricing and project details.

Window Installation in Los Altos Hills
New construction and additions across Los Altos Hills call for window installation that starts before the rough opening is even framed. We work with your builder or architect to confirm header sizes, flashing details, and orientation so glass is placed where it earns its keep. On hillside lots, that often means fewer windows on hot west walls and more on the shaded north side, plus attention to egress requirements wherever bedrooms are involved. We coordinate directly with the general contractor so our work doesn’t hold up the rough-in or the stucco crew. Window Installation in Los Altos Hills covers the process and what to budget.

Door Replacement in Los Altos Hills
Front entry doors in Los Altos Hills take direct afternoon sun on one side and cool evening air on the other, so warping and seal failure are common in older homes. We replace entry systems, patio sliders, and French doors with units that swing level and latch cleanly year-round. Therma-Tru entries are a frequent pick because the fiberglass construction resists the expansion and contraction that twists wood doors in this climate. Big glass sliders from ES Windows and ECO Window Systems let homeowners capture canyon views without giving up thermal performance. Door Replacement in Los Altos Hills has the full breakdown.

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 Hills
We install and service eight product lines, and in Los Altos Hills the calls tend to cluster around CGI, CWS, ES Windows, and Therma-Tru. Replacement parts and hardware are ordered directly from the manufacturer, so turnaround stays predictable. Browse our brands to see the full lineup.
Pricing for Window Company in Los Altos Hills, CA
| Service | Typical range in Los Altos Hills |
|---|---|
| Single window replacement (standard size) | $700 – $1,400 |
| Standard window replacement | $500 – $1,100 |
| Mid-range window replacement | $700 – $1,400 |
| High-end / oversized window replacement | $1,300 – $3,000+ |
| Single door replacement (basic slab) | $650 – $1,100 |
| Mid-range door replacement | $1,000 – $2,400 |
| Full system door replacement (frame and all hardware) | $2,000 – $5,000+ |
| Labor-only window install (per opening) | $185 – $330 |
What pushes pricing upward in Los Altos Hills: second-story or hillside access that requires scaffolding or a second crew member, oversized glass that must be ordered custom, and permit fees when an opening changes size. Every Juniper quote is written and locked before the first screw turns, so the number we hand you is the number you pay.
Neighborhoods We Serve in Los Altos Hills
We work throughout Los Altos Hills, from the estates near Byrne Preserve to the quieter lanes off Page Mill Road and the homes along the foothills corridor. Our crews live and work in the Bay Area and schedule Los Altos Hills jobs in tight, reliable windows, usually within 3 to 5 business days for standard replacements.
- Byrne Preserve area
- Page Mill Road corridor
- Foothill Expressway side
- Summit Wood / Moody Road area
- Purissima Road and surrounding lanes
Service Area – Cities Near Los Altos Hills
We serve Los Altos Hills as our local focus, and we also handle window and door projects for homeowners nearby. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews heading out to Los Altos Hills and other Peninsula communities throughout the week. Passing through other metros, we regularly cover San Jose, CA and San Francisco, CA, and we run routes down to Los Angeles, CA and San Diego, CA as well.
Serving Los Altos Hills, CA - Our Local Coverage Area
We’re based in the Los Altos Hills 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 Hills
Yes. We pull permits whenever the project changes an opening size or triggers hillside review. The fee gets folded into your written quote, and we schedule inspections around the town’s turnaround times.
Standard replacements are usually on the calendar within 3 to 5 business days. Custom orders or projects requiring hillside permits typically add 2 to 3 weeks. Call (682) 281-2168 and we’ll give you a specific date range.
We provide spec sheets and product documentation your HOA may request. Most Los Altos Hills neighborhoods have minimal HOA input, but when a board needs details, we turn around the paperwork quickly so the job doesn’t stall.
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 Hills 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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