Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Thousand Oaks, CA
Juniper Windows & Doors is the window company Thousand Oaks homeowners call when they want a written price before any work starts. Thousand Oaks homes face real heat exposure, especially on west-facing walls and canyon-adjacent properties, so window and door choices here are never just about looks. We handle window replacement, window installation, and door replacement in Thousand Oaks with impact-rated and high-efficiency products matched to how this city’s sun and wind actually behave.
If you’re pricing out a project, call (682) 281-2168 and we’ll walk you through real numbers, not vague ballparks.
Why Thousand Oaks Homes Are Different
Thousand Oaks sits in the Conejo Valley, where summer heat climbs into the 90s and Santa Ana winds push through the canyons in fall. Homes here were largely built between the 1950s and 1980s, and many still carry original aluminum-frame windows that conduct heat straight into the living room. In neighborhoods like Newbury Park and Lynn Ranch, we regularly see single-pane sliders original to the build date, warped frames, and patio doors that no longer seal. That’s a bigger issue here than in coastal cities ten miles west, where the marine layer keeps temperatures moderate.
Thousand Oaks also has a strong HOA presence, especially in planned communities like Dos Vientos and Lang Ranch. Some associations require board approval before exterior window or door changes, and a few specify frame colors or visible grid patterns. We don’t file HOA paperwork, but we do know how to stage a job so the board review goes quickly. If your neighborhood has architectural guidelines, tell us during the estimate and we’ll work the specs into the written quote.
Our Main Thousand Oaks Services
The two jobs Thousand Oaks homeowners call us about most are replacing aging windows and swapping out exterior doors that have warped in the heat. Here’s what each one involves locally.
Window Replacement in Thousand Oaks
Replacing windows in Thousand Oaks usually means pulling original aluminum or wood frames and installing modern units with low U-factors and better seals. Homes on ridge lines or open lots catch more wind-driven dust and sun than valley-floor properties, so we spec glass accordingly. One local condition matters a lot: many Thousand Oaks bedrooms face west, and that afternoon heat is relentless. Impact-rated options and low-E coatings make a measurable difference. Get the full breakdown on Window Replacement in Thousand Oaks.

Window Installation in Thousand Oaks
New-construction and addition window installation in Thousand Oaks runs into its own set of requirements. Builders in the Conejo Valley pull permits through Ventura County, and inspectors check flashing details and egress dimensions carefully. Whether the job is a full-home install or a single dormer, we measure, order, and install to the plan with a written price locked before delivery. See Window Installation in Thousand Oaks for what’s involved and what it costs here.

Door Replacement in Thousand Oaks
Front doors and patio sliders in Thousand Oaks take direct afternoon sun, and older wood doors split at the bottom edge as a result. We replace entry doors, French doors, and sliders with Therma-Tru and ViewLux systems built to keep their shape through temperature swings. If your door faces the Santa Monica Mountains, wind-driven rain means weatherstripping and threshold details matter more than they would on a shaded inland lot. Read the local overview on Door Replacement in Thousand Oaks.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Thousand Oaks
We install and service PGT, CGI, and ES Windows products in Thousand Oaks, with parts stocked locally for common hardware and seal repairs. That means most service calls don’t wait on a cross-country shipment. For the full lineup, see our brands.
Pricing for Window Company in Thousand Oaks, CA
| Service | Typical range in Thousand Oaks |
|---|---|
| Window replacement (standard vinyl, per window) | $450 – $850 |
| Window replacement (impact-rated, per window) | $900 – $1,400 |
| Full-home window replacement (1,800 sq ft home, 12 – 16 windows) | $7,000 – $15,000 |
| Window installation (new construction, per opening) | $350 – $700 |
| Door replacement (steel or fiberglass entry door) | $1,200 – $2,800 |
| Door replacement (sliding patio door, standard) | $1,800 – $4,200 |
| Door replacement (French door, pair) | $2,500 – $5,500 |
| Impact-rated door system | $3,000 – $7,000 |
Prices in Thousand Oaks climb when a home sits on a canyon-facing slope that makes delivery and staging harder, or when the HOA requires a specific frame finish. Every Juniper quote is written and locked before work begins, so the number you approve is the number you pay.
Neighborhoods We Serve in Thousand Oaks
We work across Thousand Oaks, from the newer builds in Dos Vientos to the mid-century ranches in the original Conejo Valley tract. Most of our crews can reach any neighborhood in the city within the same scheduling window.
- Newbury Park
- Lynn Ranch
- Dos Vientos
- Lang Ranch
- Wildwood
Service Area – Cities Near Thousand Oaks
Beyond Thousand Oaks, our crews regularly serve homeowners in Westlake Village, CA, Oak Park, CA, Agoura Hills, CA, and Simi Valley, CA. Dispatch and scheduling are coordinated from our Los Angeles office, and crews work locally around the Conejo Valley daily.
Serving Thousand Oaks, CA - Our Local Coverage Area
We’re based in the Thousand Oaks 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 About Window Company in Thousand Oaks
Most Thousand Oaks estimate appointments can be scheduled within a few business days. Call (682) 281-2168, speak to a live person, and we’ll find a time that works. Evening and weekend slots are available.
Some do, especially in master-planned communities like Dos Vientos. We recommend checking your CCRs before ordering. We can adjust frame styles, colors, and grid patterns to fit what your board allows, and we’ll hold the written price while your approval is pending.
No. The price we put in writing is the job’s final price, barring a discovered structural issue we’d flag and re-quote before touching it. No surprise invoices at the end.
Ready for a real number? Call (682) 281-2168 and we’ll schedule your free Thousand Oaks estimate with a written quote.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Thousand Oaks Customers Say
"Front door looks great and shuts well. The threshold is sealed well and the lock lines up with the strike."
- Rory F."Quote came in the app with options for glass. Easy to compare."
- Vera L."Door replacement. Installer texted when on his way and finished by lunch. Tight and clean."
- Neil B.










Before
After
Before
After
Before
After