Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Windows & Doors Across Larkspur
Window and door work in Larkspur costs more and takes more planning than most people expect, and the reason is baked into the town itself. A window replacement on Magnolia Avenue can run $4500 to $15000. The same job on a Baltimore Canyon hillside can push past $25000 when fire-code upgrades and structural reframing enter the picture. We’ve worked both sides of Larkspur for years, and we know which questions to ask before the first opening is cut. Call (877) 610-1318 and we’ll walk you through what your specific home will actually need.
Why Barrett & Sons Construction Is Larkspur’s Preferred Windows & Doors Company
Tom Barrett founded this company in 1998, and his sons run the crews. That’s not a marketing line. When we pull up to a job in the 94939 or 94977 zip code, the people holding the tools are the people whose name is on the truck. Larkspur homeowners between 50 and 70 have told us the same story dozens of times: a national outfit quoted one number on the phone, sent strangers to the house, and handed over a different bill at the end. We don’t do that. Every scope item, every allowance, every price change arrives as a written change order before work proceeds. If the allowance isn’t on paper, it’s a surprise waiting for a date.
We also know Larkspur in a way a dispatch-driven company never will. Our scheduling comes from our San Francisco Bay Area office, but the crews live and work in Marin. When we quote a Baltimore Canyon home, we already know the driveway is too narrow for a standard truck and the Cal Fire requirements will add scope. That knowledge goes into the estimate up front, not as a surprise invoice at the end. And every job carries the 90-Day Done Right Promise in writing: if something isn’t done right, Tom comes back and makes it right. One call.
Our Windows & Doors Services in Larkspur
Our Windows & Doors team handles the full scope of work Larkspur homes actually need, from simple sash replacements in Old Town to full impact-rated packages on canyon hillsides. Here are the four services we do most across Larkspur.
Window Installation
We install Andersen and Marvin units across Larkspur, and we’ve handled enough early-1900s Craftsman homes to know that original redwood jambs are rarely square after a century of damp winters. A proper install here means checking the rough-in for rot, reframing where needed, and flashing for a climate that funnels marine moisture inland from the bay. We don’t just swap glass into a failing frame and call it done.
Door Installation
Door work in Larkspur splits into two worlds. On the flat Old Town corridor along Magnolia Avenue, we’re often replacing original Victorian-era doors where the threshold has rotted through and the framing behind the jamb is soft. In Baltimore Canyon, we’re installing doors that meet ember-resistant standards and sealing them against wind-driven rain that hits hillside exposures harder than anything in Corte Madera.
Window Replacement
A typical window replacement in Larkspur runs $4500 to $15000 depending on how many units and what the walls reveal once we open them. In older flatland homes, we regularly find failed weight-and-pulley hardware, rotted sills, and knob-and-tube wiring that needs to be addressed before the new units go in. We write those findings into a change order and get your approval before we spend a dollar of your money.
Impact Windows & Doors
For Baltimore Canyon and other hillside addresses in the Wildland-Urban Interface, impact windows and doors aren’t an upgrade. They’re a code requirement. We install fire-hardened, ember-resistant units that pass Cal Fire inspection, and we handle the paperwork so the inspector’s sign-off is on file. Most Larkspur homeowners replace these in packages, which pushes costs to the $8000 to $25000 range depending on the number of openings and the condition of the surrounding framing.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Larkspur
We carry Andersen and Marvin on windows, and KraftMaid on door and millwork packages. These aren’t mystery brands off a van. You can look them up before you sign anything, and we encourage you to. Our Larkspur jobs also pull from the same supplier network we use across Marin, which means lead times on Andersen and Marvin orders are consistent, and we’re not waiting on parts shipped from across the country. If you have an existing brand you want matched or replaced, we will work with it.
Common Windows & Doors Problems We See in Larkspur Homes
- Failed weight-and-pulley hardware in Old Town Craftsman windows. The original sash cords snap, the weights drop into the wall cavity, and homeowners live with windows that won’t stay open. Opening the wall to repair this often reveals rotted redwood jambs from decades of marine dampness, which turns a simple fix into a load-bearing header repair.
- Water intrusion behind original stucco returns. Larkspur’s prolonged damp winters push moisture behind window flanges. By the time most homeowners notice the paint bubbling, the sheathing and subfloor underneath have dry rot that triggers a code-required framing replacement.
- Hillside door walls that drift and bind. Baltimore Canyon decks and door walls frequently sit on undersized framing that has shifted downhill over time. Installing a new sliding glass door without correcting the subfloor slope causes the door to bind within months and leak by the first wet season.
- Fire-code violations on canyon-facing openings. Homes in the State Responsibility Area with older single-pane windows or untreated door frames will fail Cal Fire inspection. Replacement means going to ember-resistant venting, fire-hardened frames, and impact-rated glass, which adds real cost that flatland quotes never include.
Pricing for Windows & Doors in Larkspur, CA
Here’s what we quote for the two most common Larkspur scopes, based on recent jobs across 94939 and 94977.
| Service | Typical Larkspur Range |
|---|---|
| Window Replacement | $4,500 - $15,000 |
| Impact Window Installation | $8,000 - $25,000 |
What moves the number is what’s behind the wall. A straight sash swap on a well-maintained flatland home lands at the low end. A Baltimore Canyon package with reframing, fire-code upgrades, and hand-carry logistics lands high. Either way, you’ll get a written line-item quote before work starts, and any change arrives as a change order. Call (877) 610-1318 for a free estimate with no trip charge inside Marin County.
Key Takeaways for Larkspur Homeowners
- Window replacement in Larkspur typically runs $4,500 to $15,000; impact packages run $8,000 to $25,000.
- Baltimore Canyon homes trigger fire-hardening and ember-resistance requirements that flatland homes avoid.
- The biggest cost driver is what we find inside the wall: rotted jambs, failed headers, or outdated wiring.
- Every price change arrives as a written change order before work proceeds. That’s the rule, not a courtesy.
One Street in Larkspur Can Change Everything
Baltimore Canyon homes sit on steep, slide-prone parcels with Wildland-Urban Interface fire codes that force window and door replacements to meet ember-resistant and fire-hardened standards. That requirement does not apply to the flat Old Town corridor just a mile away. The difference is not a preference. It is written into the permit. A homeowner on Magnolia Avenue can replace a double-hung with a standard Andersen unit and pass inspection the same day. A homeowner on a canyon road off Baltimore Park is looking at impact-rated glass, ember-resistant venting, and possibly defensible-space corrections before the window even gets ordered. This dual-zone reality is specific to Larkspur’s geography, and it’s exactly the thing a generic Bay Area window quote gets wrong. We build it into the estimate from the first visit.
One job sticks with us. On a steep Baltimore Canyon driveway too narrow for our standard truck, our crew hand-carried a KraftMaid sliding patio door and impact-rated window units up to a mid-century home that needed a Larkspur Kitchen Remodeling touch. When we opened the first rough-in, the framing had settled over an inch. We reframed the openings and added custom flash pans before setting the new windows, then walked the owner through the inspection sign-off. That’s not extra work we invented. That’s what the house required, and it was on the change order before we touched it.
We Also Serve Cities Near Larkspur
Our crews work regularly in Corte Madera, Kentfield, Mill Valley, and Tamalpais Valley. Each town has its own housing stock and its own code quirks, but the way we work doesn’t change: written scope, written allowances, permits pulled, and the Barrett name on the truck. If you’re in a neighboring city, Windows & Doors in Larkspur is a good place to start, but the same phone number gets you the same crew.
Serving Larkspur, CA - Our Local Coverage Area
We’re based in the Larkspur area and know this community well, offering Home Additions & ADU in Larkspur. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Windows & Doors in Larkspur
Replacing windows in Baltimore Canyon triggers Cal Fire’s Wildland-Urban Interface requirements, which means impact-rated or dual-pane tempered glass, ember-resistant venting at any new openings, and fire-hardened frame materials. In practice, most canyon homes need these upgrades across every exterior opening, not just the ones being replaced, because the inspector will flag non-compliant units on the same elevation. That’s why canyon window packages land between $8,000 and $25,000 while flatland replacements stay lower. Call (877) 610-1318 and we’ll tell you what your specific parcel requires before you spend anything.
Old Town Larkspur homes are almost all early-1900s Craftsman and Victorian builds with original redwood framing that has been soaking in marine dampness for over a century. Once we remove the old window, we typically find rotted jambs, undersized headers, or outdated wiring that must be corrected before the new unit can be installed to code. A Corte Madera quote that doesn’t account for those findings is not cheaper. It is incomplete. Our quotes include a written allowance for likely framing and electrical corrections, so the final number is not a surprise. Call us for a free second opinion on any written estimate.
Yes. We source clear vertical-grain redwood from local Marin suppliers and mill casing profiles to match the original dimensions on Magnolia Avenue bungalows. Where the original casing is salvageable, we remove it intact and reuse it. Where rot has compromised the profile beyond repair, we match the grain, width, and depth so the replacement reads as original. This matters more on Magnolia than almost anywhere else in Marin because the historic character is part of the home’s value.
We hand-carry it. Many Baltimore Canyon driveways are too narrow and steep for a standard delivery truck, so our crew moves the door, the window units, and the framing materials up on foot, often with a two-person carry and a panel cart. We plan for that labor in the estimate, which is why out-of-area quotes that assume truck access always come in low and then balloon once the contractor sees the site. We already know what the driveway looks like before we quote it.
Yes, window and door replacements in Larkspur require a permit, and the permit process triggers an inspection of the existing opening. If the inspector finds non-compliant framing, outdated wiring, or fire-code violations on the same elevation, those items must be corrected before the permit closes. That is the single biggest reason window quotes move once work starts. We build those likely findings into the written allowance up front, and the permit inspector works for you, not for us. That’s why we like him.
If you’re weighing window or door work in Larkspur, get a written quote from someone who already knows the difference between Magnolia Avenue and Baltimore Canyon. Call (877) 610-1318 to schedule your free estimate, and ask about our $40 Off Any Repair Over $200 and the permanent 10% Senior & Veteran discount.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Larkspur, CA.