Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Larkspur, CA
Window and door replacement in Larkspur runs $800 – $3,200 per opening depending on the product and framing condition, with most homeowners replacing 8 – 15 units at a time. We’re Lightwell Windows & Doors, the local Cedarwell company serving Larkspur from our San Francisco Bay Area office, and we carry PGT, CGI, CWS, ES Windows, and four other brands so the recommendation fits your home rather than our preferred vendor. Larkspur’s mix of 1900s cottages along Magnolia Avenue and mid-century hillside homes above Baltimore Canyon means every job starts with a different set of conditions, from original single-pane wood sashes to redwood-canopy moisture damage that hides behind intact-looking paint. Call (562) 478-8017 and we’ll put a written price in front of you before any work starts.
Why Larkspur Homes Are Different
Larkspur sits in a bay-facing valley that pulls marine fog inland every night, keeping humidity persistently higher than inland Marin cities like Novato or San Rafael. That moisture alone is hard on window seals and weatherstripping, but the real variable is Baltimore Canyon.
Under its dense redwood canopy, the canyon sees near-zero direct sunlight for much of the year. The microclimate stays damp enough that we’ve repeatedly found original wood door and window frames where the paint is the only thing holding the sill together. Probe with an awl and it sinks several inches into punky wood. What looks like a straightforward swap becomes a full rough-opening rebuild before any new unit can go in. This isn’t scope creep from carelessness; it’s a condition unique to this pocket of the city that honest pricing has to account for upfront.
The historic Magnolia Avenue corridor adds its own layer. Those Victorian and early Craftsman cottages, many built between the 1900s and 1920s, still carry original single-pane wood windows and solid-wood door assemblies. They’re beautiful, but they’re long overdue for replacement or careful restoration, and the openings rarely match modern standard sizes.
Our Main Larkspur Services
Most calls we get from Larkspur homeowners fall into three categories: replacing failed or inefficient existing windows, installing windows in new openings or additions, and upgrading entry or patio doors. Each has its own page with detailed pricing and process.
Window Replacement in Larkspur
We remove your existing window down to the rough opening, inspect the framing for moisture damage (especially critical in Baltimore Canyon), and install a new unit with proper flashing and insulation. In Larkspur’s older homes, we often custom-size to fit original openings that don’t match any modern standard. Our crew follows C.A.R.E. values on every visit: shoe covers, drop cloths, and we ask before moving anything. Window Replacement in Larkspur has full pricing and product details.
Window Installation in Larkspur
New construction, additions, or wall cutouts for better light and ventilation, we handle the full opening creation, header installation, and exterior finishing to match your siding. Larkspur’s hillside homes often benefit from strategic window placement that captures afternoon sun the canyon floor misses. We pull permits, pass inspections, and leave a written warranty. Window Installation in Larkspur covers the complete process.
Door Installation in Larkspur
Entry doors, patio doors, and French doors in Larkspur face the same moisture challenges as windows, with the added stress of foot traffic and security needs. We measure the rough opening precisely, rebuild deteriorated thresholds when needed, and install with proper sill pan flashing to direct water away from the framing. Door Installation in Larkspur has product options 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 Larkspur
We stock and install PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. Most replacement parts and common sizes are available without long lead times, and we can source specialty products for historic Larkspur homes that need specific profiles or divided-light patterns. our brands
Pricing for Window Company in Larkspur, CA
| Service | Typical range in Larkspur |
|---|---|
| Standard vinyl window replacement | $800 – $1,400 per opening |
| Fiberglass window replacement | $1,200 – $2,100 per opening |
| Wood-clad window replacement | $1,500 – $2,800 per opening |
| Custom-size historic reproduction window | $2,000 – $3,200 per opening |
| New window installation (new construction opening) | $1,000 – $1,800 per opening |
| Entry door installation (prehung, standard size) | $1,400 – $2,500 |
| French or patio door installation | $2,200 – $4,000 |
| Rough-opening rebuild (Baltimore Canyon typical) | $400 – $1,200 additional |
| Exterior trim wrap or replacement | $200 – $500 per opening |
| Full-house window package (10 – 15 openings) | $12,000 – $28,000 |
Prices in Larkspur push toward the higher end when we find hidden framing damage in the redwood canopy areas, which is why we inspect with an awl during estimation and build that possibility into the written quote. You’ll see every line item before we start, and the price we write is the price you pay, no change orders unless you add scope.
Neighborhoods We Serve in Larkspur
We work across all of Larkspur, from the flatlands near the ferry terminal to the hillside streets above the canyon. Most appointments are scheduled within a few days, and we coordinate dispatch from our San Francisco Bay Area office to keep response times reasonable throughout Marin.
- Baltimore Canyon
- Magnolia Avenue historic corridor
- Larkspur Highlands
- Escalle (Larkspur Landing area)
- Hawthorne Canyon
Service Area – Cities Near Larkspur
Our crews work throughout central and southern Marin County. We regularly see homeowners in Kentfield, CA and Corte Madera, CA with similar hillside moisture issues, while San Rafael, CA and Mill Valley, CA present their own microclimates and housing stock variations that change how we approach each job.
Serving Larkspur, CA - Our Local Coverage Area
We’re based in the Larkspur 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 Larkspur
We typically schedule estimates within 2 – 4 business days, sometimes sooner depending on current project volume. Call (562) 478-8017 and we’ll find a time that respects your schedule, including Saturday mornings when needed.
Most full-frame replacements and any new opening creation require a permit from the City of Larkspur. We pull permits as part of our standard process, handle the inspections, and pass those costs through at our cost, not marked up. The written quote will note whether your specific job needs permitting.
Yes. Our C.A.R.E. values include Respect for your family’s time and quiet hours, and we use pet-safe caulk and sealants wherever there’s a choice. We lay drop cloths before touching anything, wear shoe covers, and ask before moving furniture. A photo of the clean space goes to you before we leave.
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 Larkspur Customers Say
"Quiet, considerate install of several windows. They cleaned the glass and the sills and vacuumed every room. You'd never know a crew had been through. House is quieter and brighter."
- Brent Sakamoto"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"They replaced a big foggy picture window. Careful with the furniture, laid down protection, and left no mess at all. Calm and respectful crew, and the view is clear again."
- Teresa Okafor