Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in San Dimas, CA
Window and door work in San Dimas runs into two realities most contractors don’t prepare for: foothill heat that bakes west-facing glass from about 2 p.m. onward, and a housing mix that swings from 1960s ranchers to early-2000s stucco builds with very different framing tolerances. That means a replacement job here is rarely cut-and-paste. Juniper Windows & Doors handles window replacement, window installation, and door replacement as separate, scoped services in San Dimas, with a written price before any work starts. Call (682) 281-2168 to get yours.
Why San Dimas Homes Are Different
San Dimas sits tight against the San Gabriel foothills, so afternoon sun hits harder and longer than it does in flatland cities down the 210. Homes along San Dimas Canyon Road and in the La Cuesta Encantada area above Bonita Avenue get direct exposure with little tree canopy, which means window glass and door weatherstripping age faster. We regularly see failed seals on double-pane units that are only 12 to 15 years old in those pockets, where the same glass in a shadier Glendora tract might go 20.
The terrain matters too. Foothill lots often have stepped foundations and non-square rough openings. A “standard size” window from a big-box store rarely drops in cleanly on these homes, so we measure every opening and order to the actual dimensions, not the nearest nominal size. Older San Dimas homes, particularly single-story builds north of Arrow Highway, also tend to have single-pane aluminum frames that transfer heat straight through the frame itself. Replacing those with vinyl or thermally broken frames changes how the whole room feels by late afternoon.
Permits are straightforward for like-for-like window replacement in San Dimas, but any opening resizing or structural header work on doors triggers plan review through the city. We pull the permit, schedule the inspection, and handle the follow-up so the homeowner isn’t chasing paperwork.
Our Main San Dimas Services
Most San Dimas homeowners reach out for one of three jobs: replacing aging windows, installing new windows in an addition or remodel, or swapping out an underperforming entry or patio door. Each has its own San Dimas page with local pricing and specifics.
Window Replacement in San Dimas
Window replacement is the most common call we get from San Dimas homeowners, and it’s usually driven by one of three things: fogged glass from a failed seal, a room that won’t cool down in summer, or crank casements that have seized up completely. Foothill heat accelerates all three. We pull the old unit, inspect the rough opening for rot or settling, install the new window with proper flashing, and finish the trim so it looks like the house was built that way. Most replacements are done in one day per opening. See the full Window Replacement in San Dimas breakdown for pricing and what to expect.

Window Installation in San Dimas
New window installation in San Dimas often comes up with room additions, garage conversions, and full remodels where there’s no existing opening to work with. That’s a different process than replacement: framing the rough opening, matching the exterior finish, and making sure the new window line aligns with the rest of the house. On San Dimas hillside lots, we also account for drainage and slope at the sill so water never pools against the frame. We’re happy to coordinate with your general contractor or run the full scope ourselves. See Window Installation in San Dimas for details.

Door Replacement in San Dimas
Door replacement in San Dimas covers front entries that have warped in the heat, slider patio doors with rollers that gave out, and upgrades to impact-rated or higher-security options. The foothill wind that comes through the canyon in fall and winter finds every gap in an older door, so we focus on the threshold seal and the weatherstripping as much as the door itself. If the jamb has shifted on a hillside home, we correct that before hanging the new slab so it closes flush. See Door Replacement in San Dimas for full scope and pricing.

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 San Dimas
Our San Dimas crews carry parts and service six product lines, including our brands ViewLux, PGT, CGI, and CWS. Stocking seals, rollers, and balance parts locally means we can often handle a repair or adjustment on the first visit instead of scheduling a second trip around a shipped part.
Pricing for Window Company in San Dimas, CA
| Service | Typical range in San Dimas |
|---|---|
| Window replacement (standard vinyl, per opening) | $450 – $1,100 |
| Window replacement (impact-rated glass, per opening) | $900 – $2,400 |
| Window replacement (large picture window) | $1,200 – $3,500 |
| Window installation (new rough opening, per window) | $550 – $1,600 |
| Window installation (whole-home, 8 – 12 windows) | $7,500 – $22,000 |
| Door replacement (front entry, standard steel or fiberglass) | $1,400 – $3,200 |
| Door replacement (front entry, premium or custom) | $2,800 – $6,500 |
| Sliding patio door replacement | $1,800 – $4,800 |
| French door replacement (pair, exterior) | $2,600 – $7,200 |
| Exterior door replacement (side/garage entry, single) | $700 – $1,900 |
Prices push toward the higher end in San Dimas when we’re working on a hillside home with a stepped foundation, when the opening needs reframing rather than a straightforward swap, or when you choose impact-rated glass. Whatever the number, we put it in writing before any work starts, and it doesn’t change unless the scope itself changes.
Neighborhoods We Serve in San Dimas
We work across San Dimas, from the older single-story tract homes down by the 57 corridor up to the newer stucco builds on the north side. Our scheduling is handled from the Los Angeles office, with local crews routed to San Dimas jobs throughout the week.
- Downtown San Dimas near Bonita Avenue
- San Dimas Canyon Road foothill area
- La Cuesta Encantada
- Via Verde neighborhoods
- Lone Hill area
Most San Dimas appointments can be scheduled within a few days, and you’ll get a live arrival time on the day of the job so you’re not waiting around on a four-hour window.
Service Area – Cities Near San Dimas
In addition to San Dimas, our crews cover the neighboring foothill communities along the 210 and 57 corridors. If you’re in La Verne, CA, Glendora, CA, Covina, CA, or Azusa, CA, the same written pricing and 365-Day Done Right Promise apply. Each city has its own page with local details.
Serving San Dimas, CA - Our Local Coverage Area
We’re based in the San Dimas 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 San Dimas
Most window and door work in San Dimas can be scheduled within a few business days. Measured, custom-ordered windows typically take two to four weeks to arrive, and we schedule installation as soon as we have them in hand and the weather cooperates. Call (682) 281-2168 to get a date on the calendar.
Like-for-like window replacement doesn’t require a permit in San Dimas, but resizing an opening or replacing a door where the header or framing changes does. We handle the permit, schedule the inspection, and close it out. You won’t need to chase the city yourself.
Yes. Many San Dimas neighborhoods, particularly planned communities and foothill HOAs, require design review before exterior window or door changes. We provide spec sheets and product details your HOA needs, and we install to whatever standard they’ve approved. The written quote holds once the HOA signs off.
Juniper Windows & Doors serves San Dimas with upfront pricing, direct product access to ViewLux, PGT, CGI, and CWS, and the 365-Day Done Right Promise on every installation. Call (682) 281-2168 for a free written estimate.
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 San Dimas 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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