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Get your free estimateWindow Company in Piedmont, CA
Lightwell Windows & Doors is a Piedmont window company that works on the kind of homes most contractors prefer to avoid: large, custom-built houses from the 1910s through 1930s with original wood sashes, divided lights, and period hardware that building review expects to stay. Most window replacement in Piedmont runs between $900 and $2,800 per opening depending on wood species, glass package, and whether the frame needs custom millwork replication. Door installation typically lands between $1,500 and $6,500 including the slab, hardware, trim, and weathersealing. Call (831) 480-4124 to talk through what your house needs, and we’ll put the price in writing before anything gets touched.
Why Piedmont Homes Are Different
Piedmont’s housing stock is dominated by large, custom-built homes from the 1910s through 1930s, often in Tudor, Mediterranean, Colonial Revival, and Craftsman styles. These aren’t tract houses with standard rough openings. The windows and doors were built into the walls, with true divided lites, hand-fitted stops, and trim profiles that don’t exist in a supply-house catalog. Piedmont’s design review process is strict about preserving early 20th-century architectural character, which means “replacement” here usually means matching what’s there, not swapping in a generic vinyl unit.
The climate adds another layer. Piedmont’s mild Mediterranean pattern brings cool, foggy summers and wet winters, and marine air accelerates wood rot and sash deterioration. On the steep, winding streets common throughout town, houses often take wind-driven rain on multiple exposures, and the combination of original single-glazed sashes and minimal overhangs on some styles leads to recurring sill rot, especially on west- and south-facing elevations. A window job in Piedmont isn’t a pull-and-plug install. It’s controlled demolition, selective frame repair, careful flashing, and a finish that looks like the house was built with it.
Styles & brands we work with
Our Main Piedmont Services
Most Piedmont homeowners call us first about one of the following:
Window Replacement in Piedmont
Replacement in Piedmont usually means keeping the original look while losing the drafts. We measure the existing sash and frame, match the wood profile and lite pattern, and build or order a unit that fits the opening without reframing the wall. On homes with rotting sills, we scarf in new wood before the new sash goes in, so the repair is invisible from the street. Expect the job to take one to two days per opening when frame work is involved. Read more about how we handle it on the Window Replacement in Piedmont page.
Window Installation in Piedmont
For new construction or additions, installation work follows a different path in Piedmont: the openings are fresh, but the design review board still expects the units to belong to the house. We coordinate with your architect or contractor, install to the manufacturer’s flashing spec, and leave the rough opening dried-in and sealed against winter rain. Projects in Piedmont often run into road access challenges on steep lots, so we plan material staging before the crew arrives. The full process is on the Window Installation in Piedmont page.
Door Installation in Piedmont
Most Piedmont door work involves front entries and rear terrace doors on homes where the original door has swollen, warped, or lost its weatherseal. We install pre-hung doors or fit a new slab to your existing jamb, matching the period hardware wherever the design review requires it. Exterior doors here need real flashing and sill pans because winter rain hits from multiple angles on hillside lots. Details and pricing are on the Door Installation in Piedmont page.
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 Piedmont
We carry a curated lineup of eight manufacturers, including Mr-Glass, Therma-Tru, and ECO Window Systems, so the recommendation can match the home instead of the installer’s preferred vendor. Common parts and hardware are stocked in the Bay Area, and on most Piedmont orders the lead time runs two to four weeks. See the full our brands page for details.
See the difference
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AfterPricing for Window Company in Piedmont, CA
| Service | Typical range in Piedmont |
|---|---|
| Window replacement (per opening) | $900 – $2,800 |
| Window installation, new construction (per opening) | $700 – $2,100 |
| Door installation (per door) | $1,500 – $6,500 |
| Exterior door replacement with frame repair | $2,200 – $5,800 |
| Interior door installation (per door) | $600 – $1,800 |
| Sliding glass door replacement | $2,400 – $7,500 |
| Sill repair and wood scarfing (per window) | $350 – $1,200 |
| Custom divided-lite wood window (per opening) | $1,800 – $4,400 |
| Weathersealing and re-glazing original sashes (per window) | $250 – $900 |
What pushes a Piedmont price upward is frame damage and millwork complexity. A window with a rotted sill and a wavy original frame takes more time than a clean pull-and-replace, and matching a 1920s divided-lite pattern costs more than a stock unit. Whatever the number is, you get it in writing before work starts, and that written price is the price you pay. No change orders at the end, no invoice surprises.
Neighborhoods We Serve in Piedmont
We work throughout Piedmont and the surrounding East Bay hills. Homes vary block by block, from grand Mediterranean and Tudor estates near Piedmont Park to Craftsman and Colonial Revival houses along the quieter lanes. Typical response time for a Piedmont service call is one to two business days.
- Piedmont Park area
- Central Piedmont
- Upper Piedmont
- Glen Alpine
- Sea View Avenue corridor
Service Area – Cities Near Piedmont
Beyond Piedmont, we regularly take window and door work in nearby cities across the East Bay. Emeryville, CA, Berkeley, CA, Albany, CA, and Lafayette, CA are all within our service area, and crews scheduled from the San Francisco Bay Area office serve Piedmont directly.
Serving Piedmont, CA - Our Local Coverage Area
We’re based in the Piedmont 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 Piedmont
In most cases, yes, especially if the house is visible from the street or in a designated historic area. Piedmont’s design review process applies to exterior changes, and window or door alterations that change profiles, materials, or lite patterns usually need approval before work begins. We can help you with the documentation. Call (831) 480-4124 and we’ll walk you through what the board will ask for.
For a typical large home with ten to fifteen openings, expect the work to run two to three weeks from the first cut to final cleanup, assuming no hidden frame damage. Homes with extensive sill rot or custom millwork add time. Your written estimate includes a schedule, and we send a photo of the cleanup before the crew leaves each day.
Yes, that’s a regular part of the work in Piedmont. We source period-appropriate hardware and can fit new hardware into existing mortises or restore the original pieces where they’re salvageable. Matching divided lites and wood profiles is standard practice here, not an upcharge. Call (831) 480-4124 for an exact quote on your house.
If your Piedmont home needs window or door work, call Lightwell Windows & Doors at (831) 480-4124. We’ll measure, talk through what the design review will want, and hand you a written price before anything starts. Led by Keith Yamada, our team answers the phone live, every time.
Six Reasons Homeowners Choose Lightwell Windows San Francisco
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.
Other Lightwell Windows San Francisco Services
What Neighbors Say About Lightwell Windows San Francisco
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 Piedmont Customers Say
"Replaced drafty old windows and a back door. The crew was gentle around my mother's antiques, protected everything, and cleaned up beautifully. Home feels warmer and calmer already."
- Walter Prim"New patio slider. Clean install, they protected the floor and hauled off the old door. Quiet, polite crew that worked around my work calls without complaint."
- Andre Bellamy"Nice work and very clean. The only small thing was a bit of caulk smudge on one sill that I wiped off myself. The install itself was careful and the windows are excellent."
- Nadia Cho