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Window Company in Cotati, CA
Juniper Windows & Doors is the window and door specialist serving Cotati, CA, with written pricing before any work begins and a 365-Day Done Right Promise on every installation. Cotati’s mix of 1960s and 1970s ranchers, newer subdivisions, and a compact downtown grid means window and door jobs here run into real-world conditions: summer heat that tests seals, fog that settles in the mornings, and homes close enough to neighbors that noise control matters. We handle window replacement, window installation, and door replacement across Cotati, and each service gets its own detailed page below. Call (682) 281-2168 to talk through your project.
Why Cotati Homes Are Different
Cotati’s housing stock leans toward single-story ranchers built between the late 1950s and early 1980s, with a second wave of construction in the 1990s and 2000s filling in areas east of Highway 101 and around the Cotati-Rohnert Park border. The older builds share a pattern we see constantly: aluminum single-pane windows with dried-out glazing, wood frames that have softened from decades of North Bay moisture, and sliding patio doors that stick in their tracks during damp winter months. Aluminum transmits heat and cold directly into the home, so an original window from 1972 is effectively a hole in the wall on a hot September afternoon, even if the glass is intact.
Cotati sits low in the Sonoma County basin, which means fog lingers longer here than on the eastern hillsides and summer highs regularly climb into the 90s. That swing puts real stress on window seals and door weatherstripping. We also see wind-driven rain hitting west-facing walls in fall and winter, which is why proper flashing and sill pan details matter more than most homeowners expect. Cotati also has a handful of newer subdivisions with HOAs; when we work in those communities, we confirm any exterior appearance requirements before ordering product so the job passes on the first review.
Our Main Cotati Services
Cotati homeowners call us most often about two things: replacing failed windows and swapping out worn entry or patio doors. Here’s what each job looks like in Cotati.
Window Replacement in Cotati
Most Cotati window replacements start with a specific complaint: a room that won’t hold temperature, a frame with visible rot at the bottom corners, or condensation between panes that won’t go away. We remove the old unit down to the rough opening, inspect the framing for moisture damage, install the new window with new flashing and insulation, and trim out the interior so it looks like the window was always there. In Cotati’s older ranchers, we frequently find the original window was never properly flashed, which means water has been seeping behind the stucco or siding for years. Full details on Window Replacement in Cotati, including materials and pricing.

Window Installation in Cotati
New construction and addition projects in Cotati call for a different process: the window goes in before the exterior is finished, so the rough opening is exposed and the flashing details are built into the wall system from the start. We coordinate with your general contractor or work directly if you’re acting as your own GC, with each window ordered to the exact rough opening dimensions from your plans. Cotati’s fog and rain patterns make sill flashing the single most important detail on a new-construction window; get that wrong and the wall cavity behind the window will hold moisture for months at a time. See Window Installation in Cotati for the full scope.

Door Replacement in Cotati
Entry doors in Cotati take direct sun on south-facing exposures and direct wind and rain on the west side, and older doors show it: warped slabs, failed weatherstripping, rusted hinges, and thresholds that have worn thin. We replace the entire door system, not just the slab, so the frame, threshold, and seals all work together. For patio doors, the most common Cotati call is a slider that no longer locks securely or has lost its seal and fogs between the glass. You can see the full breakdown at Door Replacement in Cotati, including what affects the price.

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 Cotati
We service and install PGT, CGI, CWS, and ES Windows products, and we keep parts and components for these lines stocked locally so Cotati jobs don’t stall waiting on a cross-country shipment. Therma-Tru and ViewLux are also available when a project calls for them. You can see the full list on our brands page.
Pricing for Window Company in Cotati, CA
Here are the price ranges Cotati homeowners can expect for common jobs. These are written-price ranges; the number we quote you is the number you pay, no change orders at the door.
| Service | Typical range in Cotati |
|---|---|
| Single window replacement | $450 – $1,200 per window |
| Full-home window replacement (10 – 15 windows) | $6,000 – $18,000 |
| Impact-rated window replacement | $800 – $1,800 per window |
| New-construction window installation | $250 – $700 per opening |
| Sliding patio door replacement | $1,400 – $3,200 |
| Front entry door replacement | $900 – $2,500 |
| French door replacement | $1,800 – $4,500 |
| Custom door replacement | $2,200 – $6,000 |
| Glass replacement (seal failure or cracked pane) | $200 – $600 per pane |
| Hardware and lock replacement | $120 – $300 per door |
Prices push higher in Cotati when the job involves second-story access, stucco repair around an old opening, or HOA-mandated finishes. What doesn’t change: the price you get in writing before we start is the price on your final invoice. Call (682) 281-2168 to get your exact quote, and we’ll walk you through what drives cost on your specific home.
Neighborhoods We Serve in Cotati
We work throughout Cotati, and our familiarity with each pocket of the city helps us spot patterns before we even climb the ladder. Here are a few we know well:
- Downtown Cotati and the grid streets around Old Redwood Highway
- The single-family subdivisions east of Highway 101
- The newer communities along the Cotati-Rohnert Park boundary
- Ranches and larger lots on the northern edge of town
- Areas west of Highway 101, where morning fog settles first
Scheduling for Cotati jobs typically runs within a week for estimates and one to three weeks for installation, depending on product lead times and permitting. Dispatch is coordinated from our San Francisco Bay Area office, and crews serve Cotati locally.
Service Area – Cities Near Cotati
Along with Cotati, our crews cover the surrounding North Bay communities. We work regularly in Rohnert Park, CA, Petaluma, CA, Santa Rosa, CA, and Sebastopol, CA, so if you’re just outside Cotati proper, chances are we’re already covering your street.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati 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 Cotati
We schedule Cotati estimates within about a week in most cases, and the written price you receive at that visit is the price you’ll pay. Call (682) 281-2168 and we’ll get you on the calendar.
Like-for-like replacements typically sail through without a permit, but anything that changes opening sizes or structural framing does require city review. We handle that paperwork when it’s needed.
Yes, we cover all of Cotati plus the nearby cities on this page. If you’re in Cotati proper or just over the line into Rohnert Park or Petaluma, reach out at (682) 281-2168 and we’ll confirm.
Ready to talk about your windows or doors? Call Juniper Windows & Doors at (682) 281-2168 for a free estimate with a written price before anything starts. Sean Mackey and the team will answer, 24/7.
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 Cotati 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.










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