Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Larkspur
Bathroom remodeling in Larkspur typically runs $9,000 to $28,000 for a full project, with small bathroom remodels landing between $5,000 and $12,000. The real wildcard in Larkspur isn’t the tile or the vanity, it’s what the walls hide once they come open. We’ve been opening up Larkspur bathrooms long enough to know exactly what those walls conceal, and we’ve built our process so you’re never handed a blank check for surprises. Call Tom Barrett and his sons at (877) 610-1318 to schedule your free in-home estimate.
If you live in Old Town Larkspur or up in Baltimore Canyon, you already know your home doesn’t remodel like a tract house. We don’t treat it like one. Every Larkspur bathroom project from our crew starts with an honest look at what’s behind the tile, under the subfloor, and inside the walls, before we ever write a number that matters.
Why Barrett & Sons Construction Is Larkspur’s Preferred Bathroom Remodeling Company
We’re owner-operated, founded in 1998, and Tom Barrett’s sons run the crews that show up at your Larkspur door. That means when you call to talk about your Madrono Avenue or Escalle neighborhood bathroom, you’re talking to the family whose name is on the truck, not a dispatcher reading a script. We answer our own phone at (877) 610-1318, day or night, and a live person picks up, not a voicemail box.
Larkspur homeowners don’t need another contractor who quotes low on the phone and shows up with a different number. Our reputation here is built on getting permits pulled and inspections signed, on writing every scope change as a written change order before a single nail moves, and on our 90-Day Done Right Promise. If it’s not done right, Tom comes back. One call. Larkspur is a small town, and we intend to keep working here with our name on every job.
Local knowledge matters here, especially if you’re in the flatlands of Old Town with pier-and-post foundations or tucked into a Baltimore Canyon hillside where the driveway makes a delivery truck captain reconsider his route. We know Larkspur’s Bathroom Remodeling in Larkspur terrain because we work in it every week, and we’ve seen the specific wear patterns your house gets from marine moisture coming off the bay.
Our Bathroom Remodeling Services in Larkspur
Here are the Bathroom Remodeling services our Larkspur customers call us for most often. Every one of them starts with a scope in writing, allowances in writing, and change orders in writing. No exceptions.
Full Bathroom Remodeling
Gutting and rebuilding a Larkspur bathroom almost always means updating more than the finishes. We plan for the subfloor rot that damp marine air creates in old pier-and-post homes, for the undersized redwood framing that’s no longer code-compliant, and for the moment an electrical rough-in gets triggered. You’ll get a written allowance for unknowns before we open the wall, not a phone call asking for more money afterward.

Walk-In Showers & Shower Remodeling
Walk-in showers are the most-requested upgrade in Larkspur right now, especially for homeowners in their 50s, 60s, and 70s who want to stay in their house long-term. We install Schluter waterproofing membranes beneath every shower we build, and we don’t skip the necessary fire- or structural-code work just to keep a price looking pretty. A proper walk-in shower in Larkspur means the pan is pitched right, the waterproofing runs to the stud, and the inspector signs off on the rough-in.

Tub-to-Shower Conversion
Converting a tub to a walk-in shower in Larkspur is usually more involved than people expect, especially in pre-1940 Old Town homes. The old cast-iron tub often sat on a subfloor that’s been quietly absorbing moisture for decades, and the existing plumbing is rarely in the right place. We handle the subfloor replacement, the drain relocation, and the waterproofing in one change-order-backed scope, so the project doesn’t stall halfway through.

Vanities, Tile & Fixtures
If you’re updating a powder room or a guest bath in Larkspur without moving walls, vanity and tile replacement is a smart, contained project. We carry premium brands you can actually look up, and we write every scope change before work proceeds. You’d be surprised how often a vanity swap in a Larkspur 1920s Craftsman turns into an electrical upgrade once the old wiring is visible. We’re ready for it, and we put it in writing.

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.
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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 install brands with real reputations behind them, not van-brand mystery products. In Larkspur bathrooms, that usually means Schluter waterproofing systems beneath shower tile, Sterling tubs and bases, and Grohe fixtures for a clean, precise look that holds up to hard water and heavy use. We can order genuine factory parts for these brands quickly, and we know their installation specifications well enough that your warranty stays intact. When you’re choosing a vanity or a shower system for your Larkspur home, we’ll show you the brand, the model, and the price line by line.
Common Bathroom Remodeling Problems We See in Larkspur Homes
Here’s what actually goes wrong in the bathrooms we open up in Larkspur. These aren’t hypotheticals, they’re the failures we repair week in and week out.
- Knob-and-tube wiring behind old tile. Live, ungrounded wiring feeding a vanity light or a wall sconce is common in pre-1930 Larkspur homes. Opening a wall on Magnolia Avenue or in the West End frequently triggers an electrical rough-in upgrade that wasn’t in the original bid, which is exactly why we write allowances for electrical into every Larkspur contract before the sledgehammer comes out.
- Rotted subfloors under old tubs and showers. Larkspur sits in a valley that funnels marine moisture inland, so damp winters are the norm, not the exception. We find soft or failed subfloor under existing tubs more often here than on the drier east side of Marin. A new tile floor over a rotten subfloor fails fast, so we sister framing and replace the plywood before tile or pan work begins.
- Failed shower waterproofing. Most of the fiberglass and tile showers in Larkspur homes built before 1990 have no modern waterproofing behind them. When we demo, we remove the old substrate down to the studs and install a Schluter membrane system that actually catches the moisture. Otherwise, the next remodel is the same problem, just newer tile on top of it.
- Notched and undersized framing. On old Larkspur jobs, particularly in Baltimore Canyon and Old Town, previous work often left a load-bearing stud cut or drilled to make room for a drain or vent. That works until it doesn’t. We reinforce and sister framing where the code or the engineer requires it, then get the inspector’s sign-off before closing the wall.
Here’s a real Larkspur moment that explains how we work. On a Magnolia Avenue Craftsman near the Old Town corridor, our crew opened a bathroom wall and found original knob-and-tube wiring feeding the vanity light, a rotted 2×4 subfloor from decades of damp marine air, and a load-bearing stud that had been notched for an old drain line. We wrote a change order before touching anything, rerouted the circuit to a GFCI, sistered the framing, and installed a walk-in shower with a Schluter waterproofing membrane, then got inspection sign-off before closing the wall. That’s the difference between a contractor with a change-order process and one who hopes you won’t notice until the bill arrives.
Pricing for Bathroom Remodeling in Larkspur, CA
Here’s what you should expect to pay for bathroom remodeling work in Larkspur, based on actual project scopes, not guesses. Every quote we write includes a written allowance for unknowns, so you know the ceiling before we start, not after.
| Service | Price Range in Larkspur |
|---|---|
| Bathroom Remodel | $9,000-$28,000 |
| Small Bathroom Remodel | $5,000-$12,000 |
| Walk-In Shower Installation | $4,500-$12,000 |
| Tub-to-Shower Conversion | $3,500-$10,000 |
What moves a Larkspur bathroom price? The biggest driver is what the permit exposes once the walls are open: knob-and-tube wiring, rotted subfloor, undersized framing, and failed moisture barriers. A small bathroom on a flat Old Town lot might stay at the $9,000 end of the range. A Baltimore Canyon master bath with access that requires hand-carrying materials up a steep driveway and fire-code upgrades will land higher. We’ll give you a written, line-item price at your free estimate, and any scope change after that is another written change order, approved by you, before work proceeds.
We Also Serve Cities Near Larkspur
Barrett & Sons Construction handles bathroom remodeling throughout Marin’s central corridor. Our Larkspur customers know us from the hardware store and the permit office. We also work in Larkspur and the surrounding communities, including Corte Madera, Kentfield, Mill Valley, and Tamalpais Valley, with dispatch and scheduling coordinated through our San Francisco Bay Area office. Call (877) 610-1318 to schedule a free estimate.
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 - Bathroom Remodeling in Larkspur
A permit means the inspector gets a look before the wall is closed, and that look almost always adds scope the original bid missed, knob-and-tube wiring, rotted subfloor, undersized framing, and failed waterproofing behind the tile. This isn’t a Larkspur-specific rule, but it’s more prevalent here because the housing stock is older and damper than neighboring towns. We write allowances into every Larkspur contract so these costs are known and approved before work starts. Call (877) 610-1318 to schedule your free estimate.
Baltimore Canyon homes sit on steep, irregular lots with narrow, winding roads that force crews to hand-carry lumber, concrete, and equipment up long driveways, and they sit inside Cal Fire’s State Responsibility Area, which means fire-hardened siding, ember-resistant venting, and defensible-space compliance add scope and cost to any project. A flat Old Town home on Magnolia Avenue is far easier to access and far less likely to trigger fire-code upgrades. We price both jobs for what they are, not what a generic Marin quote says they should be. Call (877) 610-1318 for a quote that accounts for your Larkspur address.
We stop the demo, write a change order for the electrical rough-in, and get your signature before we touch the wiring. An allowance that isn’t on paper is a surprise waiting for a date. We’ll reroute the circuit properly, solve the problem with a GFCI where required, and keep the permit inspector happy before we close the wall. This is a good thing for your safety and your home’s resale value, and it’s exactly why we write electrical allowances into every Larkspur bathroom contract.
Usually not, and you should be skeptical of any contractor who says otherwise. Larkspur’s damp marine winters have often rotted the subfloor under the old tub, and a new shower needs a properly pitched pan and a solid substrate. We inspect the subfloor before we quote, and if it needs replacement, that goes in the original scope, not a surprise later. You’ll get a real range for your tub-to-shower conversion, and the estimate is free.
If your Larkspur home sits in Baltimore Canyon or another WUI zone, Cal Fire rules may require ember-resistant vents, fire-hardened siding, and other exterior upgrades that touch a bathroom project when exterior walls are opened or new penetrations are made. An inspector enforcing WUI rules isn’t optional, and we wouldn’t skip it anyway. We’ll tell you upfront whether your address triggers those requirements and write the scope into the contract before we start. Call (877) 610-1318 for a quote specific to your Larkspur property.
Ready to talk? Call Tom Barrett and his sons at (877) 610-1318 to schedule your free bathroom remodeling estimate in Larkspur. You’ll get a written, line-item quote, honest answers about what your walls are hiding, and a contractor whose name and license number you can look up before you sign anything.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Larkspur and Marin County since 1998.







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