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ECO Window Systems Construction in Los Altos, CA | Gold Star Contractors
We’re Gold Star Contractors, and we provide independent ECO Window Systems in Loyola and across Los Altos. We are not an authorized ECO Window Systems dealer, and we don’t pretend to be one. What we do is pull these units out of postwar ranch openings, figure out why they failed, and set them back in square, flashed, and sealed for the next few decades. Los Altos’s own building division plan-checks window change-outs, so the permit timeline matters as much as the glass. Call (833) 382-8544 for a free estimate.

Why Los Altos Residents Choose Us for ECO Window Systems Service
Our crew has spent years working on the 1940s to 1960s ranch homes that still dominate Los Altos lots. We know a 1950s rough opening that framed an aluminum slider doesn’t always welcome a vinyl ECO retrofit without some shimming, re-flashing, or full sill repair. Noel Carranza, our owner and Los Altos General Contractor, started his trade doing concrete and finish carpentry across Southern California before building Gold Star Contractors, and he runs every window job with the same rule: One call, done right – that’s the only way I know how to run a job.
We’re also a full-scope general contractor working with 50+ manufacturer brands across roofing, windows, doors, and more, including ECO Window Systems repair in Mountain View. That matters when a window leak in Los Altos turns out to be a roof drainage problem, or when your window replacement is bundled into a larger remodel. We specify the brand, manage the install, and stand behind the result. No handoff gaps between a window crew and a roofer who don’t talk to each other.
If you’re planning window work in the 94022, 94023, or 94024 ZIP codes, we’re familiar with the local permit desk and the plan-check queue. That’s where our ECO Window Systems sales & service experience saves you time.
Styles & brands we work with







Common ECO Window Systems Construction Problems We Solve in Los Altos
- Fogged dual-pane glass on west elevations. Los Altos afternoons bake the afternoon-sun side of a house. The IGU seal on an ECO dual-pane unit fails there first, leaving a cloudy pane that no amount of cleaning fixes. We see this constantly on 1990s and 2000s ECO retrofits facing the Santa Cruz Mountains side of the lot.
- Head flashing rot from low-pitch ranch roofs. Those flat or barely-pitched roofs dump winter rain directly onto window head flashing. We pull ECO units on Los Altos ranches and find water staining and rotted head trim before the glass ever fails. The window isn’t the leak source; the roof drainage is.
- Cocked retrofit inserts in original 1950s openings. The old rough openings were framed for aluminum sliders. When the surrounding framing settles over sixty years, an ECO retrofit insert can sit out of square. The sash drags, the sill leaks, and the homeowner thinks it’s a bad window. It’s usually a framing and flashing correction.
- Sliding patio door tracks that seize and pit. Los Altos irrigation overspray plus years of grit wear down ECO rear patio door rollers and tracks. The panel jumps the track or grinds to a stop. Some of these are roller-and-track replacements; some are full door replacements. We’ll tell you which one you have before we quote.
- Original builder-grade ECO single-pane units on pre-1990 ranches. These are tired. Single pane, old weatherseal, warped frames. When a Los Altos homeowner is already tearing off the low-pitch roof and redoing the rear elevation, we usually recommend replacing these rather than chasing them with caulk.
ECO Window Systems Service in Los Altos: What Local Conditions Mean for Your Equipment
Los Altos runs its own per-trade, plan-checked permits through the city’s building division rather than a county service. That’s the one fact that shapes every ECO window job here more than anything else. Replacing windows isn’t an over-the-counter swap. The city’s plan-check queue and neighbor-notice periods set the calendar, and a window change is often bundled with the same remodel that’s tearing the low-pitch ranch roof off. We sequence ECO window submittals with that plan-check timeline rather than treating them as a separate errand, and we also handle ECO Window Systems repair in Stanford. On a low-pitch ranch off the 94022 side of town, our crew pulled the original ECO slider out of the family-room wall and found the rough opening had been leaking at the head flashing for years, with rot in the sill plate under a rear elevation that takes full afternoon sun. We rebuilt the opening, re-flashed it, and set a new ECO dual-pane unit with corrected shimming and a proper sill pan – the sliding door now drains and closes true instead of dragging. The homeowner told us the fogged pane on the west side had been “cleaned” for two seasons before anyone realized the seal was gone.
That’s the Los Altos pattern: a window job that’s actually a flashing job, sequenced around a city permit queue. If you’re in the Los Altos service area and your ECO windows are underperforming, call us before you call a handyman.
ECO Window Systems Models & Products We Service in Los Altos
We work on the ECO Window Systems units most common in Los Altos ranch homes. That list includes vinyl single-hung and slider replacement units from 1990s and 2000s remodels, ECO dual-pane sliding glass doors on rear elevations facing patios, fixed and awning units set into kitchen and family-room additions, and the original builder-grade ECO vinyl single-pane units still hanging on in pre-1990 ranches.
Our parts approach is practical: OEM-spec rollers, weatherseal, and glazing where the unit is worth saving. Quality aftermarket IGU and hardware where the frame is sound but the glass is spent. Big picture: a fogged IGU on a solid ECO frame is a glass job. A racked, leaking unit in a failing rough opening is replacement territory. We tell you which one you have before we quote.
See the difference
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AfterECO Window Systems Service Pricing in Los Altos
Here are the line-item ranges we quote for the most common ECO window work in Los Altos:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair (when window leaks trace to roof drainage) | $400 – $1,800 |
What drives the number? Rough opening condition, framing rot, flashing scope, whether the city requires wildfire-resistant Chapter 7A upgrades on your elevation, and whether the job is glass-only or full unit replacement. A free estimate from us is a written line-item quote, not a ballpark. Call (833) 382-8544 and we’ll walk the openings with you.
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 – ECO Window Systems Construction in Los Altos
Yes, you need a city permit for window replacement in Los Altos, and yes, the plan-check queue can add weeks. We handle submittals and sequence the window work with any other remodel scope you have running. If you’re already pulling a permit for a roofline change or rear addition, we bundle the window plan into that same review cycle instead of starting a parallel clock. Call (833) 382-8544 and we’ll map the timeline before you sign anything.
If the frame is square, the sash operates, and the only failure is a blown IGU seal, reglazing with a quality aftermarket IGU is often the right call, and it’s less money. If the frame is racked, the sill leaks, or the rough opening has rot, replacement is the honest answer. We’ll pull the trim and tell you which one you have before we quote.
West elevations in Los Altos take the harshest afternoon sun and the widest temperature swings. The IGU seal on the west side degrades faster, the vinyl expands and contracts more, and the glass fails first. It’s not a brand defect pattern; it’s physics plus orientation. We see it almost every week on 1990s and 2000s ECO retrofits here.
It can. Homes on the foothill-side edges of Los Altos fall under Chapter 7A exterior ignition-resistant requirements when certain remodel scopes pull permits. We flag that early in the estimate, because it affects glazing choices and frame materials. You’ll know your compliance cost before you commit, not after the plan-check comes back.
If the panel is sound, the frame is true, and the track is just pitted from grit and irrigation overspray, a roller-and-track replacement can restore it. If the frame is racked, the panel has sagged, or the sill leaks into the floor system, it’s a door replacement. We’ll tell you on site, with the panel out of the opening, so you can see exactly what we’re seeing. Call (833) 382-8544 to schedule the look.
Service Areas Near Los Altos
We serve Los Altos and the surrounding communities, including Corona, Home Gardens, El Cerrito Corona, Norco, and Eastvale. For residents on the foothill side, see our dedicated ECO Window Systems service in Los Altos Hills page. If you’re on the valley side, see ECO Window Systems service in Palo Alto.
Book Your ECO Window Systems Service in Los Altos Today
Whether you’ve got fogged glass, a dragging slider, or a full window replacement tied to your next remodel, we’ll walk the openings and give you a written quote. Call (833) 382-8544 to schedule your free estimate.
Written by Noel Carranza, Owner & General Contractor at Gold Star Contractors, serving Los Altos and surrounding communities.