Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Windows & Doors Across Agoura
Window and door replacement in Agoura runs $4,500 to $25,000 depending on the number of openings, product rating, and whether your home sits inside the Woolsey Fire rebuild zone. Most jobs take two to four days once materials arrive, and we handle the permit, the inspection, and the final sign-off so you don’t have to chase the county. If you’re weighing a quote right now, call (877) 610-1318 and Tom or one of his sons will walk you through what your specific house actually needs, not what a sales rep wants to sell.
We’ve been installing and replacing windows and doors in the hills above the 101 since the late 1990s, and we know exactly what the Agoura wind and fire codes demand. That matters more here than almost anywhere else in Los Angeles County.
Why Barrett & Sons Construction Is Agoura’s Preferred Windows & Doors Company
Barrett & Sons is the name on the truck, not a franchise dispatching strangers. Tom Barrett founded the company in 1998, and his sons run the crews you’ll see on Kanan Road, Chesebro Road, and the hillside streets off Driver Avenue. When we give Agoura homeowners a price for windows or doors, that price stays put unless something changes, and even then the change order arrives in writing before work moves forward.
Agoura customers regularly tell us the same thing: they got burned by a national outfit that quoted low on the phone and showed up with a different number. We don’t do that. Every quote includes the exact product, the exact design pressure rating, the flashing method, and the permit line item. Look up our license number yourself if you want, Tom publishes it.
We answer the phone 24 hours a day, 7 days a week. Not a voicemail box. Not an out-of-state call center. A live person who knows what a Chapter 7A inspection means and can tell you whether your existing window can be retrofitted or needs full replacement.
Our Windows & Doors Services in Agoura
Window Installation
New window installation in Agoura starts with the rough opening. Most of the 1970s to 1990s hillside tract homes we work on have wood framing that predates today’s seismic and fire codes, so we inspect the header, the king studs, and the flashing before any glass goes in. If the opening needs re-framing to carry a heavier impact-rated unit, you’ll know before we start, with the cost in writing.
Door Installation
Entry doors and side doors in Agoura face the same wind-driven ember exposure as windows. A hollow-core door off the shelf won’t pass inspection in the 91301 rebuild zone if the parcel triggers Chapter 7A requirements. We install solid, rated doors with proper weatherstripping, threshold pans, and ignition-resistant components where the parcel map calls for them.
Window Replacement
Replacing windows in an older Agoura home usually means addressing what’s behind the stucco, not just swapping glass. We’ve opened walls on dozens of homes where the original nailing fins were never flashed with Grade D paper, and water had been getting into the stud bay for years. Our replacements include continuous sill pans, flex-wrap corners, and silicone sealant at every penetration. That’s the standard, not an upgrade.
Impact Windows & Doors
Impact-rated windows and doors are the single biggest request we get from Agoura homeowners since the Woolsey Fire. Whether you’re rebuilding a lost home or hardening a surviving one, the units must carry both a wind-load rating for the canyon-exposed faces and a WUI-listed, ignition-resistant glazing designation. We stock and install products from Simonton, PGT, and CGI that satisfy both requirements on one product label. Our Windows & Doors team can show you the exact specification sheets before you sign anything.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Agoura
We install and service windows and doors from Simonton, PGT, and CGI, and we order direct, not through a middleman. That means faster lead times for Agoura customers and no mystery substitutions. If a part fails under our 90-Day Done Right Promise, Tom comes back and makes it right, one call. We also keep common hardware and weatherstripping on hand for quick turnarounds on service calls throughout Agoura.
Common Windows & Doors Problems We See in Agoura Homes
- Missing or failed perimeter flashing. Original 1970s and 1980s installations in Agoura hillside tracts often skipped Grade D paper behind the nailing fins. The first Santa Ana rain drives water sideways into the stud bay, and by the time you see the paint bubbling, the framing is already wet.
- Undersized headers on retrofit replacements. When a homeowner buys heavier impact glass and a contractor crams it into an old 2×4 opening without adding a structural header, the county inspector fails the permit. We’ve corrected this on multiple Agoura parcels where the previous installer never pulled a permit at all.
- Builders-grade single-pane windows in fire-mapped zones. If your home sits within the Chapter 7A trigger area and still has original single-pane aluminum frames, an insurance claim after a fire event can be denied because the glazing wasn’t listed for ignition-resistant construction.
- Warped or swollen patio door tracks on hillside slabs. Soil movement from expansive hillside clay and El Niño rains shifts slabs, which binds sliding door rollers and breaks seals. Replacing the door without addressing the slab settlement just means you’ll replace it again in five years.
Pricing for Windows & Doors in Agoura, CA
Here’s what Agoura homeowners should expect to pay for the most common window and door projects. These ranges include product, labor, flashing, and permit line items where applicable. No mystery allowances. No surprise invoices.
| Project | Agoura Price Range |
|---|---|
| Impact Window Installation | $8,000 - $25,000 |
| Window Replacement | $4,500 - $15,000 |
| Impact Sliding Glass Doors | $8,000 - $25,000 |
The spread comes down to product rating, opening count, and whether your parcel triggers the dual wind-plus-fire compliance path. A flat lot with standard replacement windows will land at the lower end. A hillside rebuild with 12 openings of 110-mph-rated, WUI-listed impact glass will not. We’ll give you a written line-item quote so you can see exactly where the money goes. Call (877) 610-1318 for a free estimate.
We Also Serve Cities Near Agoura
Our crews work throughout the Conejo Valley and surrounding hills, including Agoura Hills, Westlake Village, Oak Park, and Thousand Oaks. If you’re in one of those communities and need windows or doors, the same written-quote standards apply.
Serving Agoura, CA - Our Local Coverage Area
We’re based in the Agoura 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 - Windows & Doors in Agoura
Yes. Any parcel within the Chapter 7A ignition-resistant construction map triggered by the Woolsey Fire must carry windows and doors that are both WUI-listed and rated for the wind loads LA County assigns to canyon-exposed hillside lots. That’s a dual compliance requirement. A standard big-box window doesn’t meet either one.
A compliant window replacement in Agoura includes the rated product, the permit, the inspection, Grade D paper and flex-wrap at the rough opening, a continuous sill pan, silicone sealant at every nailing fin, and re-framed headers where the heavier impact unit requires them. A cheap quote usually leaves out the permit, the flashing, and the header work, because those are the labor line items that cost money. Call (877) 610-1318 and ask for the full scope in writing.
It depends on the frame condition, the original flashing, and whether the glass can meet current wind and fire standards at all. Single-pane aluminum frames on a fire-mapped parcel typically cannot be retrofitted and must be replaced with listed products. We’ll inspect the opening and tell you straight. If it can be saved, we’ll save it. If it can’t, we’ll show you why.
You need the full permitted scope, the final inspection sign-off, and the product specification sheets showing the design pressure rating and WUI listing. Insurers in the 91301 market are increasingly asking for all three before granting premium discounts, and a permit that was never pulled voids the discussion entirely. We provide the package on every compliant install.
Yes, often higher. Sliding glass doors present a larger surface area and a different structural profile than windows, so LA County’s wind-load tables frequently assign them a higher design pressure requirement on the same wall. A door that isn’t rated for the same exposure as the adjacent windows can fail inspection even if the windows pass. We spec doors separately from windows for exactly this reason. Call (877) 610-1318 for a line-item quote on your specific openings.
What Agoura’s Woolsey Fire Rebuild Means for Your Windows and Doors
Every new window and door in Agoura’s 91301 rebuild zone must carry a design pressure rating that satisfies both the California Building Code’s wind-load provisions for Exposure C hillside lots and the Chapter 7A ignition-resistant glazing rules triggered by the Woolsey Fire map. That’s a dual compliance no flat-valley Ventura Boulevard strip in neighboring Calabasas has to meet. If you’re rebuilding a lost home or hardening a surviving one, the product you choose has to satisfy both standards on one label, and the contractor has to prove it to the inspector.
On a hillside lot off Kanan Road, our crew replaced three 1990s wood-frame picture windows with dual-pane, tempered, Low-E3 impact units rated for the 110-mph basic wind speed that LA County assigns to Agoura’s canyon-exposed faces. The original aluminum frames had failed rough-in inspection because the old rough openings were not flashed with the required Grade D paper and flex-wrap, so we re-framed the load-bearing wall corners, installed new nail fins with a continuous sill pan, and got the inspector sign-off before the stucco patch went on. That’s the difference between a quote that passes and a quote that doesn’t.
The LA County post-fire review process for 91301 parcels also includes mandatory geotechnical review for any grading, even on previously developed lots. That can add months to a project timeline if you don’t anticipate it upfront. We do. It’s part of why Agoura homeowners call us first when they’re weighing window and door replacement.
Key Takeaways
- Impact window installation in Agoura runs $8,000 to $25,000; standard window replacement runs $4,500 to $15,000.
- Woolsey Fire rebuild parcels in the 91301 zone require dual compliance: wind-load rating plus Chapter 7A ignition-resistant glazing.
- Compliant quotes include permits, inspections, flashing, sill pans, and engineered headers where needed. Cheap quotes omit these.
- Impact windows and doors are our most-requested Agoura service, and we stock Simonton, PGT, and CGI products.
- Every Barrett & Sons job comes with the written 90-Day Done Right Promise.
Get a Written Quote for Your Agoura Windows & Doors Project
If you’re tired of phone quotes that change at the door, call (877) 610-1318. We’ll give you a written line-item quote with the product, the rating, the flashing method, and the permit line item all spelled out. Free estimates across Agoura, including the 91301 rebuild zone and every hillside street off Kanan Road, Chesebro Road, and Driver Avenue. Tom Barrett or one of his sons will pick up.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Agoura and the surrounding Conejo Valley since 1998.