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ECO Window Systems Construction in Calabasas, CA | Mason Remodeling Co Thousand Oaks
We provide independent ECO Window Systems construction service across Calabasas, from replacement windows on Mulwood ranch homes to full impact-rated installs in The Oaks. As a General Contractor - Calabasas team, we know the city’s view-preservation rules before we touch a single frame. What makes our work here different is knowing the city’s view-preservation rules before we touch a single frame. That local knowledge, paired with years of hands-on ECO Window Systems repair and replacement, means you get a window that passes inspection, holds its seal, and doesn’t create a fight with the neighbors. Call (805) 309-3386 for a free estimate.
Why Calabasas Residents Choose Us for ECO Window Systems Service
We’re an independent construction firm, not a factory-authorized dealer. That matters because we answer to you, not to a manufacturer’s sales quota. Isaac Pruett, our owner, grew up in Los Angeles and trained at Los Angeles Trade-Technical College before running job sites across the region. He’s seen enough failed window installs to know that the difference between a ten-year window and a thirty-year window is usually the crew, not the glass. When we service ECO Window Systems in Calabasas, we bring OEM-compatible parts, a written price before any work starts, and the kind of familiarity that comes from working on these exact window lines in this exact microclimate.
Styles & brands we work with







Common ECO Window Systems Construction Problems We Solve in Calabasas
- Warped vinyl frames on south-facing picture windows. Calabasas summers push surface temperatures past 130°F on stucco walls facing south. ECO Window Systems Series 9000 vinyl frames can soften and warp in that heat, throwing sashes out of alignment. We see this most on the older ranch-style homes in Mulwood, and the fix is usually a full sash replacement with a reinforced vinyl profile.
- Corroded aluminum joints after canyon storms. The Series 7000 aluminum frames on hillside estates take a beating when marine air pushes up Malibu Canyon during winter storms. Joint corrosion leads to pitting, failed seals, and stuck sashes. We disassemble, clean, and replace the corroded hardware with OEM-spec pieces before resealing the frame.
- Stress cracks in impact-rated glass after seismic events. Calabasas sits in the Santa Monica Mountains fault zone. Even small temblors can create hairline stress cracks around the glass edges of ECO Window Systems impact-rated units, especially in Mountain View Estates where homes sit on steep grades. Those cracks compromise the unit’s structural rating and need immediate replacement.
- Fogged dual-pane glass in aging installations. Dual-pane seals in ECO Window Systems windows typically fail between years 10 and 15. In gated communities like The Oaks, where many original installations are now hitting that mark, we’re replacing fogged glass packages weekly. The fog isn’t cosmetic; it signals a failed argon fill and reduced thermal performance.
- Dry-rotted framing around window openings. Calabasas’ mild, wet winters plus clay-heavy hillside soil equals moisture intrusion. When original ECO Window Systems were installed without proper flashing, we find rotted king studs and sill plates behind the trim. We open the wall, replace the framing, and reinstall with modern flashing details that meet current Calabasas code.
ECO Window Systems Service in Calabasas: What Local Conditions Mean for Your Equipment
Here’s the thing most window companies won’t tell you upfront: in Calabasas, replacing your ECO Window Systems windows can trigger a city-mandated view preservation analysis. This is why our Calabasas Bathroom Remodeling and window clients alike benefit from our early planning approach. This rule, which doesn’t exist in the flat San Fernando Valley below, means the city reviews new window openings to ensure they don’t block a neighbor’s established mountain view. If your new window is larger or repositioned higher than the original, it can get denied. We’ve built replacement plans for homes along Mulholland Highway and in Calabasas Hills that keep the original frame footprint and sightline orientation specifically to avoid this. When a homeowner wants bigger glass, we work with the planning department early, before they’ve spent money on windows that won’t get approved. That’s the difference between a window company and a construction firm that actually builds in this city.
ECO Window Systems Models & Products We Service in Calabasas
We service and install the full ECO Window Systems lineup: the Series 7000 Aluminum Windows, Series 9000 Vinyl Windows, the Impact-Resistant Line, and Custom Fixed-Frame Windows. For glass packages and hardware, we prioritize OEM parts, especially on impact-rated or custom-sized units where structural integrity and code compliance depend on exact specs. For out-of-production models, we source high-quality aftermarket balances, weatherstripping, and sealants that meet or exceed original specifications. Our honest position: repair when the frame is sound, replace when multiple sashes are warped or parts costs approach 60% of a new window’s installed price. Learn more about our ECO Window Systems sales & service.
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AfterECO Window Systems Service Pricing in Calabasas

Window work in Calabasas costs more than the valley floor, and it’s not just overhead. Hillside access, city review requirements, and the premium finish expectations of luxury homes all factor into the number. Here’s where our work typically lands:
| Service | Price Range |
|---|---|
| Window Replacement (per window) | $4,500 – $15,000 |
| Impact Window Installation (per project) | $8,000 – $25,000 |
| Home Addition (including ECO Window Systems installation) | $45,000 – $130,000 |
Your free estimate includes a written line-item breakdown, so you know exactly what you’re paying for before any work begins. Call (805) 309-3386 and we’ll schedule a time to walk the property and give you a real number.
Serving Calabasas, CA - Our Local Coverage Area
We’re based in the Calabasas 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 Calabasas
Yes, if you keep the original frame footprint and sightline orientation. Calabasas triggers a view preservation review when new windows are larger or repositioned higher than the originals. Impact-rated ECO Window Systems replacements that match the original opening dimensions typically pass without additional review. We design replacements specifically to avoid this conflict. Call (805) 309-3386 and we’ll check your existing openings before you order anything.
Repair is often possible if the frame is still square and the sash operates smoothly. Fogging means the dual-pane seal has failed and the argon fill has escaped. We can replace the glass package alone, which runs roughly a third of the cost of a full window replacement. But if the vinyl frame has warped from Calabasas sun exposure, replacement is the better long-term call.
The Impact-Resistant Line and select Series 7000 and 9000 configurations meet Calabasas’ Wildland-Urban Interface code for tempered, multi-pane glazing in wildfire hazard zones. However, not every ECO Window Systems model qualifies. We verify the specific model against your property’s fire zone before recommending a replacement. If you’re in a high-severity zone, ask us about dual-pane tempered units with metal framing, which the city favors over vinyl in fire-prone hillside areas.
Yes, on hillside properties where marine air pushes up the canyons from Malibu, aluminum frames corrode at the joints and weep holes faster than in the valley. We see pitting and white oxidation on Series 7000 frames within ten years in these microclimates. The fix is removing the sash, cleaning the corrosion, replacing the affected hardware, and re-sealing with a marine-grade sealant. For homes in this zone, we often recommend upgrading to impact-rated units with factory thermal breaks, which resist corrosion better than original aluminum.
Yes. We coordinate window placement with the city’s planning department before framing begins. The key is designing the addition so window openings match or stay below your neighbor’s established sightlines. We’ve done this on additions in Calabasas Hills and Mountain View Estates where the city required a formal view analysis before approving the build. The windows go in after the review, not before. Call (805) 309-3386 if you’re planning an addition and want to avoid a denial at the finish line.
Service Areas Near Calabasas
We serve Calabasas and the surrounding hills, including Thousand Oaks, West Hills, Oak Park, Malibu, and Topanga. If you’re in a nearby community with ECO Window Systems units, we’ll come take a look. For neighbors to the north, see our ECO Window Systems service in West Hills page. If you’re further into the Conejo Valley, check ECO Window Systems service in Thousand Oaks. Our full coverage area is on the Calabasas service area page.
Book Your ECO Window Systems 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 to schedule your free estimate with Mason Remodeling Co Thousand Oaks. We answer live, every time.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, serving Calabasas since 2004.











