Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterWindows & Doors in Cupertino, CA
Window installation in Cupertino runs $800-$1,900 per opening for most tract-home replacements, with whole-house projects on 1,500-2,500 sq ft ranch homes typically landing between $18,000 and $45,000. The city’s housing stock, built mainly between 1955 and 1980, still holds original single-pane aluminum frames that California’s Title 24 energy code no longer permits for replacement, which means nearly every job here is a code-driven upgrade rather than a like-for-like swap. Call Sightline Windows & Doors at (509) 265-6387 for a written price before any work starts.
Why Cupertino Homes Are Different
Cupertino converted from orchard land to suburb in a single concentrated stretch between 1955 and 1980, and the houses from that era share a common window and door profile: wide horizontal aluminum sliders, single-pane glass, and large aluminum sliding doors opening to rear patios. Those products are now 50-plus years old and well past design life. In Monta Vista and other western Cupertino tracts, decades of minor seismic settling have racked original aluminum sliding door frames just enough that doors no longer lock flush or roll cleanly. That racking is the single most common reason homeowners in these blocks call for a door-specific estimate before they’ve budgeted for a full window project. Cupertino sits far enough inland to see summer heat events topping 100°F, which makes solar heat gain coefficient (SHGC) a critical specification for west- and south-facing glass. Spring mornings bring persistent marine layer that keeps sill and frame assemblies damp for hours, so inadequately flashed replacements develop rot or interior condensation within a few seasons. With median home values among the highest in the nation, most window work here is a whole-house overhaul rather than a single-unit fix.
Our Main Cupertino Services
Two services account for the majority of calls from Cupertino homeowners: door installation (driven by racked aluminum sliders in the western hills) and window replacement (driven by Title 24 and failing single-pane frames).
Door Installation in Cupertino
Cupertino’s original aluminum sliding doors were installed before modern flashing standards existed, and after 50-plus years of seismic settling many no longer seal, lock, or roll. A door installation here often means reframing the opening to square, adding proper sill pan flashing, and specifying a door rated for the summer heat and damp spring mornings this inland climate produces. Door Installation in Cupertino covers the full scope, from single patio door swaps to multi-panel systems on teardown rebuilds.
Window Replacement in Cupertino
Original single-pane aluminum windows in Cupertino tract homes fail Title 24 requirements outright, so replacement is never a cosmetic choice, it’s a code obligation that also solves heat gain, marine-layer condensation, and noise from Bubb Road and De Anza Boulevard corridors. Window Replacement in Cupertino details the measured survey, permit path, and written pricing for typical ranch and split-level homes here.
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.
BeforeAfterWindow Installation in Cupertino
Window installation in Cupertino means pulling 50-plus-year-old single-pane aluminum sliders out of ranch and split-level tract homes and replacing them with code-compliant systems that handle 100°F summers and damp spring mornings without condensation or heat gain. Most jobs in this city are whole-house replacements because the original windows fail Title 24 on every opening, and the same aluminum frames have racked and oxidized to the point where a single-unit fix rarely makes financial sense. Our Window Installation process begins with a measured survey you keep, and the written quote cannot differ from that document.
Single & Double Hung Windows
Signs you need it
Sashes that won’t stay up, visible daylight at the meeting rail, or condensation between panes on your original 1960s or 1970s units.
What it costs in Cupertino
Single and double hung replacements in Cupertino typically run $800-$1,900 per opening, depending on size and glass package.
How we do it
We measure each opening to the eighth of an inch, remove the old sash and balance system, install a new plumb frame with backer rod and sealant, and leave a photo record of the flashed rough opening.
Horizontal Roller Windows
Signs you need it
Tracks worn concave from decades of sliding, rollers that grind, or frames so racked the operable panel binds against the fixed lite.
What it costs in Cupertino
Horizontal roller replacements in Cupertino typically land between $850 and $2,000 per window, with wider three-lite units at the top of that range.
How we do it
We remove the full frame rather than retrofitting into strained aluminum, set the new roller track level, and verify the operable panel rolls cleanly before sealing the perimeter.
Casement Windows
Signs you need it
Crank mechanisms that slip, seals that let drafts through the hinge side, or a desire to catch the reliable afternoon breeze on Cupertino’s east-facing elevations.
What it costs in Cupertino
Casement windows in Cupertino run $900-$2,100 per opening depending on size, with hardware upgrades adding about $150 per unit.
How we do it
We square the rough opening, mount the new casement with continuous shims, adjust the multi-point lock, and flash the exterior with a sill pan that drains rather than traps moisture.
Awning & Hopper Windows
Signs you need it
Small bathroom, kitchen, or foundation-level openings where the old aluminum awning no longer operates or drafts freely even when closed.
What it costs in Cupertino
Awning and hopper windows in Cupertino typically cost $700-$1,700 per opening, plus $200-$400 when the rough opening needs structural correction.
How we do it
We order the unit to match the existing RO dimensions, install with the correct exterior-grade sealant for Cupertino’s marine-layer moisture, and verify the operator opens and closes without binding.
What Window Installation Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Single/double hung window | $800 - $1,900 per opening |
| Horizontal roller window | $850 - $2,000 per opening |
| Casement window | $900 - $2,100 per opening |
| Awning or hopper window | $700 - $1,700 per opening |
How long does window installation take in Cupertino?
A full-house replacement of 12-18 openings in a Cupertino ranch typically takes 3-5 working days including trim and sealant cure time. Permits add 1-3 weeks depending on the city’s current plan-check queue. Call (509) 265-6387 for a written schedule before work starts.
Do I need a permit to replace windows in Cupertino?
Yes. California’s Title 24 requires permits and performance verification on every replacement window swap in Cupertino. We pull permits, schedule inspections, and leave you the signed final inspection record. Call (509) 265-6387 and we’ll price the permit path with the windows.
Impact Windows & Doors in Cupertino
Impact windows and doors in Cupertino are specified less for hurricane risk and more for what they do in this specific climate: they cut 100°F summer heat gain, they block the marine-layer-driven condensation that wrecks conventional frames by March, and they give hillside-adjacent lots real protection against flying debris during the wind events that barrel through the Santa Cruz Mountain gap. Most Cupertino homeowners choose them as a whole-house performance upgrade on their original aluminum sliders, not as a storm-only purchase. Our Impact Windows & Doors line spans PGT, CGI, and ES Windows, specified by performance tier and price range rather than by margin.
Impact-Resistant Windows
Signs you need it
West-facing glass that turns rooms into ovens during Cupertino’s 100°F heat events, or original single-pane units that flex visibly in wind.
What it costs in Cupertino
Impact-resistant windows in Cupertino run $1,500-$3,000 per opening depending on size and required design pressure rating.
How we do it
We verify the structural opening and design pressure requirements, specify the correct laminated glass package, install with stainless fasteners and a fully flashed perimeter, and document every step with photos.
Horizontal Roller & Sliding Impact Windows
Signs you need it
Wide horizontal sliders on ranch homes where full-frame replacement is the only way to meet current performance codes and debris-resistance standards.
What it costs in Cupertino
Horizontal roller and sliding impact windows in Cupertino typically cost $1,600-$3,200 per unit, with three-lite configurations at the higher end.
How we do it
We order the impact-rated roller system to the measured RO, install a level track, set the laminated panels, and confirm the lock mechanism engages under the rated design pressure.
What Impact Windows & Doors Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Impact-resistant window | $1,500 - $3,000 per opening |
| Horizontal roller / sliding impact window | $1,600 - $3,200 per opening |
| Impact-rated sliding door | $4,000 - $9,000 per unit |
Are impact windows required by code in Cupertino?
No, Cupertino does not sit in a designated hurricane zone, but wind-load and debris-resistance standards apply to hillside-adjacent lots. We specify impact ratings where the exposure demands them. Call (509) 265-6387 and we’ll verify your specific lot’s requirements in writing.
Will impact windows lower my cooling bills in Cupertino?
Yes, the laminated glass and low-E coatings on impact units cut solar heat gain enough that west-facing rooms run measurably cooler during summer heat events. The exact SHGC depends on the glass package you select. Call (509) 265-6387 for written product specs and pricing.
Energy-Efficient Windows in Cupertino
Energy-efficient windows in Cupertino solve the two conditions that define this city’s climate: triple-digit summer afternoons that overheat west- and south-facing rooms, and marine-layer mornings that leave conventional frames damp enough to condense interior glass. The right U-factor and SHGC combination here is not a generic national formula, it’s specific to a city that gets both extreme heat and persistent coastal moisture. Our Energy-Efficient Windows service specifies glass packages by orientation, overhang, and lot exposure rather than by what’s in stock.
Low-E & Argon Gas Glass
Signs you need it
Rooms that feel 10 degrees hotter than the rest of the house at 4 p.m. in August, or furniture and flooring that have faded noticeably along south and west exposure lines.
What it costs in Cupertino
Low-E with argon gas adds $150-$400 per opening over standard glass in Cupertino, a cost that typically pays back through lower cooling loads within a few seasons.
How we do it
We confirm the orientation of each opening, specify the appropriate low-E coating and argon fill, and verify the edge seal with a moisture-meter reading before installation.
ENERGY STAR Replacement Windows
Signs you need it
Original single-pane aluminum frames that fail Title 24 outright and push your entire replacement scope into a code-triggered upgrade.
What it costs in Cupertino
ENERGY STAR replacement windows in Cupertino run $800-$1,900 per opening for standard sizes, with energy upgrades adding $150-$400 per unit.
How we do it
We specify the window to meet both Title 24 and ENERGY STAR for the Northern California climate zone, install with full-perimeter flashing, and leave the compliance documentation in your job file.
What Energy-Efficient Windows Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Standard energy-efficient window (installed) | $800 - $1,900 per opening |
| Low-E + argon gas upgrade | $150 - $400 per opening |
| Whole-house energy package (12-18 openings) | $11,000 - $28,000 total |
What U-factor and SHGC should I target in Cupertino?
Target a U-factor of 0.30 or lower and SHGC under 0.25 for west- and south-facing glass. East and north elevations can tolerate slightly higher SHGC without penalty. Call (509) 265-6387 for a written spec sheet based on your home’s orientation.
Will Title 24 rebates offset the cost?
Cupertino homeowners can pursue Silicon Valley Clean Energy and utility efficiency incentives on qualifying packages, but the written price we give you is your cost before any rebate you claim. Call (509) 265-6387 for a line-item quote and we’ll flag which products qualify.
Sliding & Patio Doors in Cupertino
Sliding and patio door replacement in Cupertino is driven by one dominant condition: the original aluminum sliders installed in the 1960s and 1970s have racked from decades of minor seismic settling, so they no longer lock, seal, or roll. In Monta Vista and the western hills, this is the most common reason homeowners get a door estimate before budgeting a full window project. Our Sliding & Patio Doors work starts with a frame-reading survey that documents the rack, the sill condition, and the correct replacement path.
Sliding Glass Door Replacement
Signs you need it
A door that binds partway down the track, daylights visible at the meeting stile, or a lock that no longer engages because the frame has twisted out of square.
What it costs in Cupertino
Sliding glass door replacement in Cupertino runs $2,500-$6,000 depending on panel size, with impact-rated glass pushing toward $9,000.
How we do it
We remove the racked aluminum frame, reframe the opening to square, install a sill pan that actually drains, set the new door, and verify the lock engages flush.
Impact French Patio Doors
Signs you need it
Rear patio doors on hillside-adjacent lots that face west into the wind, or homeowners who want a hinged-door alternative to the standard slider without giving up debris resistance.
What it costs in Cupertino
Impact French patio doors in Cupertino typically cost $4,000-$9,000 per unit including hardware and full flashing.
How we do it
We measure the opening, order the impact-rated French system, install with stainless fasteners and continuous flashing at the head and jambs, and adjust the multi-point locking hardware.
What Sliding & Patio Doors Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Sliding glass door replacement | $2,500 - $6,000 per unit |
| Impact sliding door | $4,000 - $9,000 per unit |
| Impact French patio door | $4,000 - $9,000 per unit |
Why does my Cupertino sliding door stick even after I clean the track?
Because the frame has likely racked out of square from decades of seismic settling, not because the track is dirty. Cleaning won’t fix a twisted extrusion. Call (509) 265-6387 and we’ll measure the rack and put the fix in writing.
Can you replace just the door panel, or do I need a full frame replacement?
On Cupertino’s original aluminum sliders, the frame is usually the failure point, so a panel-only swap rarely solves the rack. We’ll document the frame condition and recommend the least expensive fix that actually works. Call (509) 265-6387.
Impact Garage Doors in Cupertino
Impact garage doors in Cupertino address a specific set of conditions: garage openings on hillside lots that take wind loading straight off the Santa Cruz Mountain gap, summer heat that turns uninsulated garage doors into radiant panels, and the structural reality that many 1960s garage-door frames are no more square than the house they’re attached to. Most replacements here are full-system swaps rather than sectional reuse. Our Impact Garage Doors service draws from PGT, CGI, and ES Windows product lines specified for wind-load code compliance and thermal performance.
Hurricane-Rated Garage Doors
Signs you need it
A garage door that flexes inward during wind events, visible bowing across the center of the panels, or a permit requirement tied to a hillside exposure.
What it costs in Cupertino
Hurricane-rated garage doors in Cupertino run $4,000-$15,000 depending on size, insulation package, and required design pressure rating.
How we do it
We verify the opening dimensions and design pressure, specify the correct bracing and track system, install with proper header reinforcement, and document the final assembly against the engineering drawings.
Energy-Efficient Garage Doors
Signs you need it
A west-facing garage that radiates heat into the house after 3 p.m., or a attached garage where the door is the largest uninsulated surface on that elevation.
What it costs in Cupertino
Energy-efficient garage doors in Cupertino typically cost $3,500-$9,000 including insulated panels and perimeter weatherstripping.
How we do it
We specify the insulated panel thickness for Cupertino’s summer heat gain, replace the perimeter seal, verify the door balances correctly, and leave the thermal specs in your job file.
What Impact Garage Doors Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Hurricane-rated garage door | $4,000 - $15,000 per door |
| Energy-efficient garage door | $3,500 - $9,000 per door |
| Wind-load code compliance package | $1,000 - $3,000 added to base door |
Does my Cupertino garage door need to be wind-load rated?
Only if your lot sits in a mapped wind exposure zone, which some hillside-adjacent properties are. We’ll verify against current code maps and give you a written answer before quoting. Call (509) 265-6387.
Can I reuse my existing garage door opener when I replace the door?
Usually yes, if the opener is in working order and compatible with the new door’s weight and balance spec. We’ll test the rails, safety sensors, and force settings as part of the install. Call (509) 265-6387 for a written scope that includes the answer.
Custom & Geometric Windows in Cupertino
Custom and geometric windows in Cupertino surface most often on the teardown rebuilds and full gut-remodels that the city’s property values make financially rational, where architects specify Fleetwood, Marvin Ultimate, and NanaWall systems by name. Even on original ranch and split-level homes, owners frequently want a signature window, an arched gable unit, or a large fixed picture window that the builder-grade track didn’t include. Our Custom & Geometric Windows work starts with a sightline measurement and a spec drawing you approve before anything is ordered.
Geometric & Shaped Windows
Signs you need it
A gable opening that needs a trapezoid or pentagon unit, a side-light configuration the builder never offered, or a desire to break the horizontal-run monotony on a front elevation.
What it costs in Cupertino
Geometric and shaped windows in Cupertino run $1,800-$5,500 per unit depending on shape complexity and glass type.
How we do it
We take a digital tracing of the rough opening, generate a CAD elevation, order the exact shape, and install with the same flashing and sealant standards as our standard work.
Arched & Curved Windows
Signs you need it
A front elevation where an arched unit matches the home’s ranch-era lines, or a curved-top opening where a squared replacement would change the look entirely.
What it costs in Cupertino
Arched and curved windows in Cupertino typically cost $2,000-$6,000 per unit, with true radius glass at the high end.
How we do it
We field-measure the radius, order the arched unit with the correct spring line, install with a custom trim package, and photograph the finished sightline for the record.
What Custom & Geometric Windows Costs in Cupertino
| Item | Typical range in Cupertino |
|---|---|
| Geometric / shaped window | $1,800 - $5,500 per unit |
| Arched / curved window | $2,000 - $6,000 per unit |
| Oversized custom opening | $3,500 - $9,000 per unit |
How long do custom window orders take for Cupertino homes?
Most custom and geometric units are ordered to spec with a 6-10 week lead time from template approval. Standard replacement windows are often available in 2-4 weeks. Call (509) 265-6387 and we’ll give you a written lead time for your specific shape.
Can you match existing custom windows on an older Cupertino home?
Yes, we can replicate the sightline and proportion of most original custom units, but materials will be current Title 24-compliant glass and framing, not the original single-pane aluminum. Call (509) 265-6387 for a written comparison of match options.
Brands We Service in Cupertino
We install and service four primary brands for Cupertino homeowners: PGT for impact-rated systems, CGI for wind-load compliance, ES Windows for custom and architectural aluminum, and CWS for value-line replacements. Parts for these lines are stocked and available through our Bay Area supply chain, which keeps replacement-part turnaround to days rather than weeks. See our brands for the full specification matrix.
Pricing for Windows & Doors in Cupertino, CA
| Service | Typical range in Cupertino |
|---|---|
| Single/double hung window | $800 - $1,900 per opening |
| Horizontal roller window | $850 - $2,000 per opening |
| Casement window | $900 - $2,100 per opening |
| Impact-resistant window | $1,500 - $3,000 per opening |
| Sliding glass door replacement | $2,500 - $6,000 per unit |
| Impact sliding / French patio door | $4,000 - $9,000 per unit |
| Hurricane-rated garage door | $4,000 - $15,000 per door |
| Energy-efficient garage door | $3,500 - $9,000 per door |
| Geometric / shaped window | $1,800 - $5,500 per unit |
| Arched / curved window | $2,000 - $6,000 per unit |
Prices in Cupertino get pushed up by three local factors: hillside lot access requiring extra staging, structural correction on racked original frames, and the Title 24 permit and verification path every window swap must go through. We put the full price, including permits and corrections, in writing before any work starts. That’s Haven Clause 1 and it’s not optional.
Neighborhoods We Serve in Cupertino
We work across every Cupertino neighborhood, from the original ranch tracts near De Anza Boulevard to the hillside-adjacent streets of Monta Vista and the newer rebuild clusters near Stevens Creek Boulevard. Our crews are scheduled from the San Francisco Bay Area office and serve Cupertino locally, with most estimates scheduled within 3-5 business days of your call.
- Monta Vista
- Rancho Rinconada
- Civic Center area
- Portals West
- Seven Springs
Service Area - Cities Near Cupertino
Sightline Windows & Doors serves Cupertino and the surrounding Santa Clara County communities. We also provide window and door installation in Saratoga, CA, Sunnyvale, CA, Mountain View, CA, and Santa Clara, CA, with the same written-price standard on every job.
Serving Cupertino, CA - Our Local Coverage Area
We’re based in the Cupertino 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 Windows & Doors in Cupertino
Yes, both windows and doors require a permit under California’s Title 24, and Cupertino enforces this on every swap, not just whole-house projects. We pull permits, schedule inspections, and leave the signed final inspection record with you. Call (509) 265-6387 to have the permit path priced in writing.
Some HOAs in Cupertino, especially in newer rebuild clusters, have design-review rules that may restrict frame colors, grid patterns, or panel styles. We prepare the spec sheet and documentation for HOA submittal as part of the measured survey. Call (509) 265-6387 and we’ll tell you what your specific HOA requires.
We typically schedule Cupertino measured surveys within 3-5 business days of your call, and the written price follows the survey, not before it. The quote cannot differ from the survey document because they are the same document. Call (509) 265-6387 to book a survey slot.
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 Cupertino Customers Say
"Front door install went smoothly. Written warranty, clear price, no pressure to upgrade anything."
- Nils H."Patio door had dropped and would not lock. They adjusted it rather than selling me a new one, and charged accordingly."
- Simone T."The survey measurements and the quote were the same piece of paper. Nothing changed on install day, which is not what happened with the two other companies we had out."
- Annette R.