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CGI Construction in Calabasas, CA | Mason Remodeling Co Thousand Oaks
We provide independent CGI window, door, and siding service across Calabasas, from The Oaks to Mulwood. What sets our CGI work apart here is that we know the local view preservation ordinance inside out, and we install these windows so they pass city inspection the first time. Isaac Pruett and our crew have been handling CGI products on hillside homes long enough to know which models work where. If you need a straight answer about cost or timing, call (805) 309-3386.
Why Calabasas Residents Choose Us for CGI Service

We’re independent CGI specialists, not a manufacturer affiliate, and that matters when you’re replacing windows on a Calabasas hillside. Isaac grew up in Los Angeles and spent years learning the trade at Los Angeles Trade-Technical College before running real job sites across this region, including Thousand Oaks and Calabasas. That background matters when a CGI Estate window needs to hold its seal through a Santa Ana wind event, or when a sliding door interlock fails after years of indoor-outdoor living.
Our crews work with genuine CGI replacement parts on critical components like laminated glass and multipoint locks, because those parts carry the impact rating. When weatherstripping or hardware is backordered, we source quality aftermarket alternatives and tell you exactly what we’re using. For broader CGI sales & service questions, we’re the crew Calabasas homeowners call when they want the installation done right and the paperwork handled.
Styles & brands we work with







Common CGI Construction Problems We Solve in Calabasas
- Fogged glass on south-facing windows. Calabasas gets intense UV exposure on south-facing hillsides, and older CGI impact glass seals eventually fail from that constant sun. You’ll see fog between the panes that won’t wipe off. We replace the insulated glass unit and get the window clear again.
- Warped or binding sashes on large Estate windows. Hillside settling and seismic activity in Calabasas shift frames over time. A big CGI Estate window that used to glide can start binding in the track. We assess whether the frame is distorted beyond adjustment or can be realigned.
- Corrosion on aluminum frames from wildfire ash. After a fire season, ash settles on frames and gets damp with morning fog, accelerating corrosion. Santa Ana winds carry salt-laden air too. We clean, treat, and reseal frames where the aluminum is still sound, and replace sections where it isn’t.
- Failed interlock hardware on sliding glass doors. Calabasas luxury homes blur indoor and outdoor spaces, and those CGI sliders get used constantly. The interlock mechanism wears out from repetition. We replace the hardware with genuine CGI parts so the door locks and seals properly.
- Streaked or milky glass from hard water and mineral buildup. Calabasas water leaves deposits on glass, especially in homes with irrigation overspray. We restore clarity where possible and recommend treatment options if the glass is etched.
CGI Service in Calabasas: What Local Conditions Mean for Your Equipment

Here’s a Calabasas-specific constraint that surprises homeowners: the city’s view preservation ordinance requires new or replacement window openings to maintain pre-existing mountain sightlines. A neighbor’s ridgeline view is protected, and a thick window frame can trigger a review. This is real, and we’ve handled it. Our crew replaced three CGI Estate fixed windows in a Mountain View Estates home after a city inspector flagged the original 1990s units for failing view preservation analysis. The thick frames blocked a neighbor’s view. We installed new CGI Estate windows with slimmer profiles and identical glass specs, and the homeowner passed final inspection without a variance hearing.
That’s not a scenario you hit in the flat San Fernando Valley. In Calabasas, frame profile matters as much as glass rating. We factor that into every recommendation.
CGI Models & Products We Service in Calabasas
We work on the full CGI residential lineup you see across Calabasas: the Estate Collection, Sentinel impact windows, Targa series, and Commercial Storefront systems on some of the newer mixed-use builds. Our parts approach is simple. Critical components like laminated glass and multipoint locks get genuine CGI replacements so the impact rating stays intact. For weatherstripping, rollers, and minor hardware, we use high-quality aftermarket parts when CGI inventory is backordered, and we tell you before we install anything. For Calabasas and the wider Calabasas service area, that means less waiting on parts and more getting the work done.
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Here are the price ranges we quote for CGI window work in Calabasas. These are real numbers, not estimates inflated by hillside complexity:
| Service | Price Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
What drives cost: the number of openings, whether we’re retrofitting into existing stucco or doing a full-frame replacement, and whether permitting triggers a view preservation review. A free estimate from us includes a written line-item price before any work starts, and you’ll know exactly who’s coming, because you get the technician’s name and photo before the visit. Call (805) 309-3386 for your number.
Serving Calabasas, CA - Our Local Coverage Area
We’re a General Contractor in Calabasas and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – CGI Construction in Calabasas
Yes, if the new window openings maintain the existing sightlines and the frame profile doesn’t add visual mass. We’ve installed CGI windows that pass inspection without a variance hearing because we specify slimmer profiles or alternative mullion patterns upfront. Call (805) 309-3386 and we’ll tell you whether your project is likely to trigger a review before you commit.
CGI impact windows are built for hurricane-force wind and debris, and their laminated glass holds up well to ember contact and radiant heat, but no window is fireproof. The bigger issue in Calabasas is the aluminum frame. Heat warping happens, and we’ve repaired frames where a close fire stressed the metal. If you’re in a high-risk zone, pair the windows with proper defensible space. Call (805) 309-3386 for an assessment of your current windows.
Genuine CGI laminated glass and multipoint locks typically take two to four weeks, depending on the part and the model. We keep common weatherstripping and hardware in stock for faster turnaround on simple repairs, and we tell you the timeline before we order. Call (805) 309-3386 and we’ll check current availability for your specific model.
For most Calabasas hillside homes, yes. The Estate and Sentinel lines hold their seals longer under UV exposure, and the frames survive seismic movement better than lower-cost imports. Where it doesn’t make sense is a low-sun, flat-lot home with minimal wildfire exposure, and we’ll tell you that too. Call (805) 309-3386 for an honest comparison for your property.
Yes, we retrofit CGI windows into existing stucco openings regularly in Calabasas. We cut the stucco cleanly, install the new window with proper flashing, and patch the stucco so the exterior looks original. Full-frame replacement is only needed when the rough opening is compromised. Call (805) 309-3386 for a free estimate on your retrofit.
Service Areas Near Calabasas
We serve Calabasas and the surrounding communities, including Thousand Oaks, West Hills, Oak Park, Malibu, and Topanga. If you’re in CGI service in West Hills territory or need CGI service in Thousand Oaks, the same crew covers both.
Book Your CGI Service in Calabasas Today
Tell me what you need done. We’ll tell you what it costs and how long it takes, then we’ll do exactly that. Call (805) 309-3386 for your free CGI service estimate in Calabasas.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, offering our Bathroom Remodeling in Calabasas and serving the area since 2004.











