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 Sunnyvale, CA
Most window and door replacement jobs in Sunnyvale run between $650 and $1,400 per opening for standard vinyl or fiberglass units, with full-home projects on 1960s ranch homes typically landing in the $12,000 – $28,000 range depending on frame condition and Title 24 compliance needs. We’re Lightwell Windows & Doors, and we specialize in the exact housing stock that dominates this city: post-war ranch homes with original single-pane aluminum windows and sliding doors that have failed well past their useful life. Our crews work daily in Sunnyvale’s 1950s – 1970s tracts, and we carry the full Cedarwell Care Promise on every job: written price before we start, shoe covers and drop cloths throughout, and a photo of your clean space before we leave. Call us at (562) 478-8017 to schedule your free estimate.
Why Sunnyvale Homes Are Different
Sunnyvale’s residential landscape was built largely to house the workforce of Lockheed Missiles and Space Company, headquartered right here in the city. That history seeded block after block of 1950s – 1970s ranch-style tract homes, concentrated heavily in neighborhoods like Lakewood, that still carry their original single-pane aluminum slider windows and aluminum sliding glass doors. These frames corrode in the Bay’s damp air, lose their seals, and sit far outside California’s current Title 24 U-factor and SHGC thresholds.
The local climate creates its own pressure. Sunnyvale sits far enough inland to spike into the low-to-mid 90s°F on summer afternoons while still catching the cool morning marine layer. Those daily temperature swings accelerate seal failure in aging insulated glass units and cause chronic condensation on aluminum frames, which is why we see so many replacement consultations starting with water damage on interior sills. With median home values consistently above $2 million and tech-industry buyers treating energy efficiency as a baseline expectation, full window-and-door replacement has become a standard pre-sale line item here, making Sunnyvale one of the densest volume-replacement markets in all of Santa Clara County.
PG&E rebate programs and California Energy Commission incentives stack on top of this, accelerating upgrade decisions toward dual-pane vinyl or fiberglass. And in those 1960s ranch tracts, the original aluminum sliding glass doors are nearly universal in their failure: disintegrated weatherstripping, seized rollers, and tracks propped with cut broomsticks. Swapping them for modern multi-point-lock sliders or French door units is one of the most common jobs on our weekly board.
Our Main Sunnyvale Services
Homeowners in Sunnyvale call us most often for these three projects, each shaped by the specific conditions of the city’s aging ranch housing stock.
Window Replacement in Sunnyvale
Window replacement in Sunnyvale typically means pulling out original single-pane aluminum frames from the 1960s or 1970s and installing dual-pane vinyl or fiberglass units that meet current Title 24 standards. We see heavy corrosion on aluminum frames in the Bay’s damp air, and we often find failed seals that have been dripping condensation onto drywall for years before the homeowner notices. Our crews carry PGT and CGI product lines that fit the standard rough openings in these ranch homes without extensive reframing. We protect floors with drop cloths, use pet-safe sealants where there’s a choice, and explain every price before we touch a window. Window Replacement in Sunnyvale has full details on our process and pricing.
Window Installation in Sunnyvale
Window installation in Sunnyvale covers new openings in additions, ADUs, and garage conversions, plus full-frame replacements where the original frame has rotted or corroded beyond salvage. The city’s flat-lot ranch homes make access straightforward, but we still find surprises: inadequate header support above original windows, or stucco exteriors that need careful cutting to avoid cracking. We stock CWS and ES Windows frames sized for common Sunnyvale rough openings, which keeps lead times short. Our technicians follow C.A.R.E. values on every visit: Clean up like it’s our own home, Ask before we move anything, Respect your time and quiet hours, Explain the price before the work. Window Installation in Sunnyvale walks through what to expect.
Door Installation in Sunnyvale
Door installation in Sunnyvale is dominated by one problem: those original aluminum sliding glass doors with failed rollers, torn weatherstripping, and tracks that haven’t locked properly in a decade. We regularly find them secured with broomsticks or dowels, sometimes for years. We replace them with modern multi-point-lock sliders or French door units from Therma-Tru and ViewLux that seal properly and open smoothly. The threshold detail matters here, because the Bay’s damp air will find any gap. We photograph the clean-up before we leave, and every door gets the 365-Day Done Right Promise stamped on the job. Door Installation in Sunnyvale covers styles, security options, and pricing.
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 carry eight manufacturer brands on hand: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. For Sunnyvale’s common ranch-home openings, we stock PGT, CGI, CWS, and ES Windows frames and hardware locally, which means most standard replacements don’t wait on shipping. See our brands for the full lineup and specifications.
Pricing for Window Company in Sunnyvale, CA
| Service | Typical range in Sunnyvale |
|---|---|
| Single vinyl window replacement | $650 – $950 |
| Single fiberglass window replacement | $850 – $1,400 |
| Full-home vinyl replacement (10 – 15 openings) | $12,000 – $18,000 |
| Full-home fiberglass replacement (10 – 15 openings) | $16,000 – $28,000 |
| Sliding glass door replacement (standard 6 ft.) | $1,800 – $3,200 |
| French door installation (standard 6 ft.) | $2,400 – $4,500 |
| Entry door replacement (prehung, steel or fiberglass) | $1,200 – $2,800 |
| New window opening (addition/ADU, with header) | $1,100 – $1,900 |
| Title 24 compliance upgrade (permit + inspection) | $400 – $800 |
| Stucco repair/matching (per opening cut) | $200 – $450 |
What pushes Sunnyvale prices toward the higher end: corroded aluminum frames that require reframing, stucco exterior cuts that need color matching, and Title 24 documentation for permit compliance. We give you a written, line-item price before any work starts, every time, with no change orders unless you add scope.
Neighborhoods We Serve in Sunnyvale
We work across Sunnyvale’s full residential map, with the highest concentration of calls coming from the original post-war ranch tracts where the housing stock is now sixty to seventy years old. Our dispatch is coordinated from our San Francisco Bay Area office, and crews typically arrive within scheduled windows that respect your family’s routine.
- Lakewood
- Ponderosa Park
- Sunnyvale West
- Ortega
- Heritage District
Service Area – Cities Near Sunnyvale
Our crews serve the full South Bay corridor from Sunnyvale, with regular jobs in Mountain View, CA to the north, Santa Clara, CA to the east, Cupertino, CA to the south, and Los Altos, CA to the west. Each city has its own housing stock and permit environment, and we adjust our product recommendations and installation approach accordingly.
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
We typically schedule consultations within a few business days, and our Bay Area dispatch keeps drive times short for Sunnyvale appointments. Call (562) 478-8017 to book your free estimate, and we’ll find a window that respects your schedule.
Most full-frame replacements and any new opening require a Sunnyvale building permit, and we pull those permits as part of our standard process. We also handle Title 24 compliance documentation, which is required for all window replacements in California. Call (562) 478-8017 and we’ll confirm exactly what your project needs during the estimate.
Yes. Our C.A.R.E. values include Respect for your family’s time and quiet hours, and we use pet-safe sealants wherever there’s a choice. We’ll ask about nap times and pet routines when we schedule, and we lay drop cloths before any tool comes through the door. Call (562) 478-8017 to talk through your household’s needs.
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
"Replaced six windows. The crew laid runners through the house and vacuumed each room as they finished. With a crawling baby, that no mess thing meant a lot. Windows are gorgeous."
- Rosalind Kemp"Lovely windows and a tidy install. One window came in a couple weeks late from the factory, so that opening finished after the others. They kept me posted and the rest was spotless."
- Mia Donnelly"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