Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CWS Construction in Los Altos Hills, CA
We provide independent CWS window and door service across Los Altos Hills, from 700 Series casements to 800 Series multi-slide walls. The one thing that makes our CWS work different here is simple: we sequence every window or door change around the town’s site-development permit, not after it. Call (877) 373-9230 for a free estimate on CWS repair or replacement. We service the 94022 hills, not just the valley floor.
Los Altos Hills isn’t a flat-lot suburb. It’s a town of one-acre-plus hillside estates where a window flashing detail that works fine in Mountain View fails in the first wet winter here. That’s why we treat CWS repair in Los Altos and the surrounding hills as its own discipline. The wind drives rain upslope, the dust and pollen from the Santa Cruz foothills get into every track and roller, and the sun bakes south-facing and west-facing elevations all summer.
Why Los Altos Hills Residents Choose Us for CWS Service
Garden Grove Contractors isn’t a CWS dealer. We’re our General Contractor in Los Altos Hills, and that changes how we approach service. We don’t have a quota to sell you a whole new window wall when a roller set will fix it. Noel Cardenas grew up in the trades, came up through a vocational construction program, and spent years working every phase of residential builds before leading Garden Grove. He’s the one who makes the final call on repair-versus-replace, and he’ll walk you through why.
That independence matters more in Los Altos Hills than almost anywhere. The homes here are custom, the lots are sloped, and the town’s review process is stricter than what you’ll find in Palo Alto or Los Altos. A CWS 700 Series unit that leaks at the sill pan up here is rarely a manufacturer defect. It’s almost always a flashing detail that was designed for a valley-floor wall. We see it, we fix it, and we don’t make you pay for a replacement you don’t need. See our broader CWS expertise for how we approach the whole line.
Styles & brands we work with
- Kitchen remodeling
- Bathroom remodeling
- Home additions & ADU
- Roofing
- Windows & doors
- Driveway & pavers
- Fence
Common CWS Construction Problems We Solve in Los Altos Hills
These are the five failure patterns we see most often on CWS units in the 94022 hills:
- Binding multi-slide and folding door hardware on 800 Series tracks. Hillside dust and pollen work into the rollers within a season or two, especially on long openings facing the exposed western slope. The doors bind, drop, or refuse to glide. We disassemble the track, clean it properly, and re-set the panels on fresh OEM rollers and gaskets.
- Water intrusion at sill pans and corner joints on 700 Series aluminum-clad wood frames. This is the big one in Los Altos Hills. When a wall gets wind-driven winter rain on a steep foothills lot, the flashing has to shed water fast. Flashing detailed for a flat valley lot won’t do it. We rebuild the sill pans, re-flash the corners, and restore the drain path.
- IGU seal failure and fogging on older CWS vinyl units. Full afternoon sun on south-facing and west-facing estate walls shortens the life of sealed units. Once the seal fails, the glass fogs and the thermal performance drops. We can replace the IGU on many models without pulling the whole frame.
- Wood-sash rot and finish breakdown where fire-resistant detailing meets the window surround. Chapter 7A exterior requirements and defensible-space clearances create specific detailing conditions around window openings. When the two aren’t coordinated, moisture gets behind the siding and works into the sash. We repair the rot, re-finish the sash, and coordinate the surround detailing properly.
- Fogged or failed sealed units affecting a whole elevation. On a 15-year-old home with multiple failed IGUs on the same wall, repair stops making sense. We quote full replacement and show you the math on thermal performance, noise, and resale.
CWS Service in Los Altos Hills: What Local Conditions Mean for Your Project
Here’s the thing most window contractors won’t tell you about Los Altos Hills: the town’s site-development permit, not the building permit, is usually the long pole on any window or door change that alters a wall opening on a graded hillside lot. That means a straightforward CWS 700 Series replacement can sit behind geotechnical and drainage review for weeks or months if nobody sequences it correctly. If you’re changing the size of an opening on a slope, changing the exterior wall assembly, or touching anything visible from the street in a way that affects grading or drainage, the site-development review triggers first.
We plan for that from day one. Before we order a single CWS unit, we check the wall opening against the town’s site-development requirements and map the permit sequence. That’s the difference between a window replacement that takes three weeks and one that drags on for half a year. It’s also why we say CWS service in Los Altos Hills is a different job than Mountain View CWS service or work in Palo Alto. The windows are the same. The town isn’t.
CWS Models & Products We Service in Los Altos Hills
We work on the full CWS line that shows up on Los Altos Hills homes: the 700 Series aluminum-clad wood windows and patio doors, the 800 Series multi-slide and folding glass door systems, the 300 Series vinyl windows and sliding doors, and the 500 Series casement and awning windows. Each line has its own failure profile up here.
On the parts side, we use CWS OEM hardware, gaskets, and sash components wherever they’re still available. When a line is discontinued, we source matched aftermarket rollers and seals that fit the original track geometry. We don’t scab in generic parts. The track tolerance on an 800 Series multi-slide is tight enough that a wrong-profile roller will bind within a season.
If you’re also considering a broader renovation, we’re a full-scope general contractor. One contractor, one contract, from the window line to the kitchen. Our Los Altos Hills service area covers the whole 94022 hills.
See the difference
Before
After
Before
After
Before
AfterCWS Service Pricing in Los Altos Hills
Here’s what to budget for CWS-related work on a Los Altos Hills hillside home:
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Full Kitchen Remodeling | $14,000 – $45,000 |
| Roof Replacement | $8,000 – $20,000 |
What drives the number up here is the lot. Steep access, stucco or stone surrounds, fire-rated detailing, and the town’s site-development review all add scope you don’t see on a flat valley lot. A free estimate from us includes a walk of the wall, a look at the flashing, and a straight answer on repair versus replacement. Call (877) 373-9230 and we’ll put a written line-item quote in your hand.
One thing we do on every Los Altos Hills job: we coordinate the window or door work with the defensible-space and Chapter 7A detailing already on the home. On a steep lot off a private lane in the 94022 hills near Loyola, we replaced a failing wall of CWS 800 Series multi-slides where the original sill pans had been flashed for a flat-lot wall and were letting winter rain into the framing. We rebuilt the pans, re-set the panels on fresh OEM rollers and gaskets, and finished the exterior surround with fire-rated detailing to match the home’s defensible-space plan. The doors now glide clean and the wall has stayed dry through two wet seasons.
The material you pick today is the problem you solve, or the one you live with, ten years from now.
Serving Los Altos Hills, CA - Our Local Coverage Area
We serve Los Altos Hills and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – CWS Construction in Los Altos Hills
Yes, in most cases where the wall opening changes size, shape, or exterior detailing on a graded hillside lot, the town’s site-development review triggers before the building permit is issued. We sequence the CWS replacement around that review from the start, so you’re not waiting on a permit you didn’t know you needed. Call (877) 373-9230 and we’ll tell you exactly what applies to your wall.
Rain + hillside dust + pollen = track contamination. The rollers get gummed up with a paste of wet debris that dries and binds the panel. We clean the track, inspect the rollers for flat spots, and re-set the panels on fresh OEM rollers where needed. It’s a same-day repair in most cases.
Yes, when they’re detailed correctly. The Chapter 7A requirements apply to the whole exterior opening, not just the window unit. We coordinate the CWS install with the fire-rated surround, the sill pan flashing, and the defensible-space plan. Done right, a CWS unit performs well in the interface zone. Done wrong, it becomes a water intrusion point disguised as a fire-safety upgrade.
On many CWS models, yes. If the frame and sash are sound, we replace the insulated glass unit only. If the frames are rotted or multiple units on one elevation have failed, we quote full replacement and show you the math. The free estimate gives you both numbers side by side.
We run both scopes under one contract, which is the main advantage. If you’re opening a kitchen wall for a new CWS multi-slide, we handle the framing, the site-development sequence, the window install, and the interior finish. No scheduling a window crew around a separate remodel crew. Call (877) 373-9230 and ask for the combined scope estimate.
Service Areas Near Los Altos Hills
Beyond Los Altos Hills and the 94022 hills, we run CWS service into the surrounding peninsula and South Bay. That includes CWS service in Palo Alto, CWS service in Stanford, plus Los Altos, Mountain View, and the unincorporated Santa Cruz foothills communities. If you’re on a sloped lot in any of those areas, the flashing rules change fast. We know where the line is.
Book Your CWS Service in Los Altos Hills Today
We’re the independent CWS service contractor Los Altos Hills homeowners call when a window wall is misbehaving. We won’t sell you a replacement you don’t need, and we won’t send a tech who’s never worked a sloped, fire-zone estate. Call (877) 373-9230 for a free estimate. We’ll walk the wall, check the site-development sequence, and give you a straight answer.
Written by Noel Cardenas, Owner at Garden Grove Contractors, serving Los Altos Hills and the 94022 hills.