Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Window Installation Across Larkspur
Window installation in Larkspur runs $850 to $2,400 per opening for most standard replacements, with full-home projects on a 1920s Magnolia Avenue bungalow typically landing between $14,000 and $38,000 depending on glazing requirements and frame condition. That range covers the permit, the glass, the labor, and the inspection sign-off. If you’re in Larkspur and want a written price before any work starts, call us at (817) 686-2228. We serve the whole city, from downtown near the Lark Theater out to Madrone Canyon and the hillside streets above Piper Park.
Larkspur is not Corte Madera when it comes to windows. The wildfire overlay changes the glass spec. The tree ordinance changes the staging plan. And the older housing stock means a tape measure is only as good as the rough opening it’s reading. We’ve worked enough Larkspur jobs to know where each of those three things bites, and we plan for them before the first sash comes out.
Why Meridian Windows & Doors Is Larkspur’s Preferred Window Installation Company
Our Window Installation team works inside a discipline that Larkspur homeowners tend to appreciate: the price goes on paper before any work starts, and it does not move at the door. That is the Garrison Standard, and it’s been the operating rule since 2009. No change orders that show up after demolition. No “we didn’t know the jamb was out of square” surprises. We write the scope, we confirm the price, and we stand behind the install for 365 days in writing. If something fails in that window, we come back at no charge.
Elliot Vance runs our Larkspur jobs and keeps the crew to a schedule that shows up as promised. Our technicians are background-checked and uniformed, so when someone walks up your driveway near the Larkspur library or off Baltimore Avenue, you know who it is. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and our crews serve Larkspur locally. Phones are answered by a live person around the clock. Every day of the year. That matters when a sash blows out in a winter storm off Corte Madera Creek and you need a straight answer at 6 a.m.
We also carry eight manufacturer lines, including PGT, CGI, and CWS, which means the window spec’d for your Larkspur home is the one that fits the wildfire zone, the historic district requirements, or the coastal exposure on your street. Not the one that happens to be sitting in a warehouse. When a Larkspur home needs tempered or laminated glazing to pass plan check, we don’t have to special-order from a catalog we’ve never touched. We know the product, we know the lead time, and we quote accordingly.
Double Hung Windows in Larkspur
Double hung windows are the most common replacement we do in Larkspur, and for good reason. The city’s older homes, particularly the 1910s to 1940s stock along Magnolia Avenue and in the flats near the old railroad corridor, were framed around single-pane double hungs. Most Larkspur homeowners replace them for three reasons: sashes that won’t stay up, glass that sweats between panes, or a plan-check requirement from the 2024 Wildfire Hazard Overlay that forces the glazing upgrade anyway.
A double hung replacement in Larkspur typically runs $850 to $1,600 per opening installed, depending on the glazing package. If your home sits within a designated fire hazard severity zone, expect to add $220 to $480 per window for tempered or laminated glass. We quote that into the initial written price, so you’re not surprised at the permitting desk.
When the jambs are not square
Larkspur’s older homes have shifted. The 1920s bungalow off Magnolia Avenue where we replaced seven original single-pane double hungs had jambs that were off by three-eighths in two directions. If we had ordered to the old sash dimensions, the new units wouldn’t have sealed, and the inspector would have flagged it. We measure the rough opening, shim to plumb, and order units that actually fit the hole. That’s the difference between a window that closes flush and one that leaks air every winter.
Retrofit versus full-frame
When the original redwood trim around your Larkspur double hungs is in good shape, we can often do a retrofit install that keeps the interior casing intact and drops the new unit into the existing frame. On that Magnolia Avenue job, we matched the jamb depth so the redwood stayed. If the frame shows rot or the sill is gone, full-frame replacement is the honest call. We’ll show you the rot before we cut anything.
Vinyl Windows in Larkspur
Vinyl windows are the right spec for a lot of Larkspur homes, especially on hillside lots off Madrone Canyon or along the eastern slopes where summer sun hits hard and homeowners want a low-maintenance frame that won’t need painting. Vinyl is also the most cost-effective way to hit the performance numbers Larkspur’s planning department wants to see in the wildfire overlay. A standard vinyl replacement runs $850 to $1,400 per opening installed in Larkspur.
The trade-off with vinyl is real, and we’ll tell you straight: vinyl frames can flex more than fiberglass or aluminum on very wide openings, so a 3-panel sliding window in vinyl will use a reinforced meeting rail. For most Larkspur windows under 48 inches wide, vinyl is an excellent budget choice with a 20-plus-year service life. We stock parts for PGT and CGI vinyl lines locally, which means faster turnaround when a Larkspur exterior door or window needs a matching sash.
Low-E glass and the southern exposure
Low-E glass is a thin metallic coating that reflects heat while letting light through. A Larkspur home with a southern exposure off Corte Madera Avenue or near the Larkspur Ferry Terminal will notice the difference in July, when the afternoon sun hits the living room for six hours straight. We spec a Low-E coating with a solar heat gain coefficient matched to your elevation and tree cover. A 0.30 SHGC works well for sun-blasted hillside lots; a 0.35 lets more passive heat into a shaded canyon home. Those numbers matter, and we include them in the written window schedule.
Vinyl in the wildfire hazard zone
If your Larkspur property sits inside the Wildfire Hazard Overlay, standard dual-pane units without tempered or laminated glass can fail plan check outright. Vinyl frames with laminated interlayers meet the requirement and cost less than fiberglass alternatives. We’ve run this spec enough times on Larkspur remodels to know exactly what the plan checker will ask for: design pressure calc, window schedule, and glazing type marked on every unit. We provide all three on every wildfire-zone job, filed with the permit application so there’s no back-and-forth.
Trusted Brands We Service in Larkspur
We install and service windows from PGT, CGI, CWS, and five other manufacturers, which gives us the range to spec the right product for a Larkspur home rather than forcing whatever’s in stock. PGT and CGI carry impact-rated and laminated lines that meet Larkspur’s wildfire zone glazing requirements without looking industrial. CWS makes a clean vinyl double hung that fits well on the city’s older single-family homes. Because we carry local parts inventory for these lines, a Larkspur customer is not waiting two weeks on a factory shipment for a simple sash replacement. The part is more likely to be on a shelf, and our crew is more likely to finish the job in one visit.
Common Window Installation Problems We See in Larkspur Homes
- Ordering to the old sash instead of the rough opening. Larkspur’s pre-war homes have jambs that settle and shift. A replacement unit sized to the existing window won’t seal, won’t pass inspection, and will cost you a re-order plus another permit revision.
- Skipping the wildfire-zone glass upgrade. If your home sits inside the designated fire hazard severity zone, standard dual-pane units without tempered or laminated glass can fail plan check and leave you exposed at resale. Re-glazing without the correct laminated interlayer is the most common Larkspur plan-check rejection we see.
- Ignoring the tree-preservation plan on Magnolia Avenue and downtown lots. Larkspur’s tree ordinance protects many mature oaks and magnolias. Staging and debris removal around protected trees without a plan can stop work and add weeks to your schedule while the arborist reviews the site.
- Rushing the permit on a 3-lite slider. Large openings like 3-panel sliders trigger structural review on some Larkspur homes, particularly hillside lots where the wall is load-bearing. The permit sequence is slower than a straight sash swap, and we file it before we order glass.
Pricing for Window Installation in Larkspur, CA
A single double hung replacement in Larkspur runs $850 to $1,600 installed. Vinyl sliders and casements fall between $950 and $1,800 per opening. Bay and bow windows are a different animal: $4,800 to $11,000 for a standard three-lite bay, depending on the roof and seat framing. Picture windows run $700 to $1,500 for a fixed unit under 40 square feet. These are installed prices, including the permit, the glass, the labor, and the final inspection.
What changes the price once work starts? Rot in the rough opening, lead paint remediation on pre-1978 homes, hidden structural shims on a load-bearing wall, and any glazing upgrade the plan checker requires after site review. We put the price on paper before demolition, and if we find rot, we show you before we touch it. The 365-Day Done Right Promise covers every install in writing. If it fails within the year, we return at no charge. Call (817) 686-2228 for a free estimate with a written, line-item price.
We Also Serve Cities Near Larkspur
Our Window Installation in Larkspur service extends to the surrounding communities. We work in Kentfield, where the creek-side homes have their own moisture issues, Corte Madera, San Rafael, and Mill Valley, each with different permit desks and different housing stock. If you’re in Larkspur or just across the Larkspur line, the process is the same: call, get a written price, and we show up on schedule.
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 Installation in Larkspur
Yes. Larkspur requires a building permit for window replacement, and plan check typically takes 10 to 20 business days, longer if the home is in the Wildfire Hazard Overlay or triggers a tree-preservation review. We file the permit, the window schedule, and the design pressure calc as one package so the review moves faster. Call (817) 686-2228 and we’ll confirm your specific timeline before you commit.
Homes inside Larkspur’s designated fire hazard severity zone need tempered or laminated glass in the street-facing and adjacent sashes, not standard dual-pane. The laminated interlayer keeps the glass in place when it’s hit by heat and embers. Expect to add $220 to $480 per window for the upgrade, and expect the plan checker to ask for the glazing type marked on every unit in the window schedule.
We measure the rough opening, not the old sash, then shim and flash the new unit to plumb and level. On Larkspur’s pre-war homes, the jambs have often shifted by a quarter inch or more from settling. Ordering to the old window is what causes air leaks, sticking sashes, and failed inspections. We quote the actual opening, which is why our written prices hold.
If your property has protected oaks or magnolias near the work area, likely yes. Larkspur’s tree-preservation ordinance requires a tree-protection plan before staging and debris removal around protected trees, especially on Magnolia Avenue and downtown lots. We identify that early in the estimate, flag it in the written price, and file the plan with the permit. It adds time but prevents a stop-work order mid-project.
Rot in the rough opening, lead paint abatement on pre-1978 homes, glazing upgrades required after plan check, and structural shims on load-bearing walls. We write the scope before demolition, and if we find any of these, we show you the condition before we change the price. No surprise change orders. Call (817) 686-2228 for an exact quote on your Larkspur home; estimates are free and the price is in writing.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Larkspur since 2009.