Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterWindow Company in Cupertino, CA
Most Cupertino window and door projects run between $15,000 and $45,000 for a full-home replacement, with single-opening jobs starting around $1,200. We’re Lightwell Windows & Doors, the local Cedarwell company serving Cupertino from our San Francisco Bay Area office, and we specialize in the premium full-frame replacements this city’s mid-century housing stock demands. Call (562) 478-8017 to schedule your free estimate.
Cupertino’s combination of 1955 – 1980 ranch homes and a technically demanding homeowner base means every job is different from what we’d see in neighboring cities. The original aluminum single-pane windows and oversized sliding doors in Monta Vista, Garden Gate, and Rancho Rinconada weren’t built for today’s Title 24 energy codes or for summers that regularly hit the upper 80s and low 90s. Our crews arrive prepared for homeowners who’ve already researched NFRC ratings and U-factors, and we carry the product documentation Cupertino’s building department requires for permit approval.
Why Cupertino Homes Are Different
Cupertino sits inland in the Santa Clara Valley, shielded from the marine layer that keeps the coast mild. That geography means direct summer sun and real heat gain, especially on south- and west-facing elevations. Low-SHGC glazing isn’t a luxury here; it’s what makes a back bedroom usable in August.
The housing stock reinforces this. The core subdivisions – Monta Vista, Garden Gate, Seven Springs, Rancho Rinconada – are largely single-story and split-level ranch homes built between 1955 and 1980. Most retain their original aluminum sliding doors to rear patios and large fixed picture windows. These homes now trade at $2 – 3 million and up, so owners don’t want budget sash-only swaps. They want architecturally appropriate, thermally broken aluminum, fiberglass, or European tilt-turn systems that match the home’s value and performance expectations.
California Title 24 mandates specific U-factor and SHGC thresholds on permitted window replacements, and Cupertino’s building department enforces compliance strictly. Contractors who can’t produce NFRC-certified product documentation fail inspections. We’ve seen it happen to other crews. We pull permits, schedule inspections, and pass them – every time.
There’s also the homeowner profile. Cupertino technicians regularly take pre-installation calls from Apple or Google engineers who’ve already built spreadsheets comparing three window lines by U-factor, condensation resistance factor, and visible transmittance. Product-spec fluency isn’t a bonus here. It’s the baseline.
Our Main Cupertino Services
These are the three services Cupertino homeowners call us about most. Each has its own dedicated Cupertino page with full pricing, technical details, and project timelines.
Window Replacement in Cupertino
Window replacement in Cupertino almost always means full-frame removal of original aluminum single-pane units, not insert replacements. The old frames are pulled to the rough opening, we address any dry rot or water intrusion we find, and we install thermally broken or fiberglass systems that meet Title 24. Most projects in Monta Vista and Rancho Rinconada run 12 – 20 openings. We handle permit drawings, Title 24 compliance documentation, and inspection scheduling. Window Replacement in Cupertino
Window Installation in Cupertino
New window installation in Cupertino covers additions, ADUs, garage conversions, and new construction. We work from architectural plans or field-measure, specify the right performance grade for each elevation’s sun exposure, and coordinate with framers and stucco crews on timing. Cupertino’s inland heat means south- and west-facing new openings get different glass packages than north-facing ones. We specify accordingly. Window Installation in Cupertino
Door Installation in Cupertino
Door installation in Cupertino focuses on the oversized aluminum sliding patio doors original to most 1960s – 1970s ranch homes. These are typically 6-, 8-, or 12-foot openings with single-pane glass and failed weatherstripping. We replace with multi-slide, lift-and-slide, or hinged French door systems from Therma-Tru and other brands, always addressing the sill pan, flashing, and air sealing that the original builders skipped. Door Installation in Cupertino
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 Cupertino
We carry eight manufacturer brands on hand: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. For Cupertino’s climate and code requirements, we most often specify PGT, CGI, and CWS for their NFRC documentation and Title 24 compliance paths. Most standard hardware and screen parts are stocked locally, so warranty callbacks don’t turn into multi-week waits. our brands
Pricing for Window Company in Cupertino, CA
| Service | Typical range in Cupertino |
|---|---|
| Single window replacement (fiberglass, full-frame) | $1,200 – $2,800 |
| Single window replacement (thermally broken aluminum) | $1,400 – $3,200 |
| European tilt-turn system, per opening | $2,500 – $4,500 |
| Full-home window replacement (12 – 15 openings, fiberglass) | $18,000 – $32,000 |
| Full-home window replacement (15 – 25 openings, premium aluminum) | $25,000 – $45,000 |
| Sliding patio door replacement (6 – 8 ft, full frame) | $3,500 – $7,000 |
| Multi-slide door system (10 – 16 ft) | $8,000 – $15,000 |
| French door installation (hinged, with sidelights) | $4,500 – $9,000 |
| Entry door replacement (steel or fiberglass) | $2,200 – $5,500 |
| Permit and Title 24 documentation package | $400 – $800 |
| Dry rot repair (per opening, if found) | $300 – $900 |
What pushes Cupertino prices toward the higher end: thermally broken or European systems instead of vinyl, large fixed picture windows that require crane or boom lift access, and stucco or EIFS exterior that needs careful cutting and matching. We put every price in writing before any work starts, with line-item breakdowns and no change orders unless you add scope.
Neighborhoods We Serve in Cupertino
We work across Cupertino’s core residential areas, from the older ranch tracts to newer infill and estate pockets. Most neighborhoods are within 20 minutes of our dispatch point, so we can typically schedule initial consultations within a few business days.
- Monta Vista
- Garden Gate
- Seven Springs
- Rancho Rinconada
- Oak Valley
Service Area – Cities Near Cupertino
Our crews serve the broader Santa Clara Valley from our San Francisco Bay Area office. If you’re just outside Cupertino city limits, we likely still cover your address. We regularly work in Saratoga, CA to the southwest, Sunnyvale, CA to the north, Mountain View, CA to the northwest, and Santa Clara, CA to the east. Call (562) 478-8017 and we’ll confirm coverage for your specific address.
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 Window Company in Cupertino
We typically schedule initial consultations within 3 – 5 business days for Cupertino addresses. Our San Francisco Bay Area dispatch coordinates crew routing to minimize wait times. Call (562) 478-8017 to check this week’s availability.
Yes. We pull permits, produce NFRC-certified product documentation, and schedule inspections with Cupertino’s building department. Contractors who skip this step routinely fail inspection here. We don’t.
Absolutely. Our technicians follow the C.A.R.E. values on every visit: Clean up like it’s our own home; Ask before we move or touch anything; Respect the family’s time and quiet hours; Explain the price before the work. We use drop cloths and shoe covers, choose pet-safe caulk and sealants where alternatives exist, and can schedule around nap times or school pickups. We photograph the clean-up before we leave so you see what we see.
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
"Quiet, considerate install of several windows. They cleaned the glass and the sills and vacuumed every room. You'd never know a crew had been through. House is quieter and brighter."
- Brent Sakamoto"New patio slider. Clean install, they protected the floor and hauled off the old door. Quiet, polite crew that worked around my work calls without complaint."
- Andre Bellamy"They replaced a big foggy picture window. Careful with the furniture, laid down protection, and left no mess at all. Calm and respectful crew, and the view is clear again."
- Teresa Okafor