







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Cotati
A full bathroom remodel in Cotati runs $9,000 to $28,000, while a small bathroom remodel lands between $5,000 and $12,000. Most Cotati jobs take three to six weeks depending on rough-in condition and permit timing. If you’re planning a remodel anywhere from the Valparaiso neighborhood to the Old Redwood Highway corridor, call us at (254) 272-5876 for a written price before any work starts.
We know Cotati’s housing stock, not just its map. The homes here mix mid-century ranch builds with late-1990s infill, and the difference matters when we open a wall. Our Bathroom Remodeling team prices the job from the rough-in out, so the number we give you is the number you approve. No vague allowances, no surprise change orders without a written scope and your signature first.
Why Sawyer Remodeling Is Cotati’s Preferred Bathroom Remodeling Company

Luca Romano founded Sawyer Remodeling in 2005, and every job since has run under The Relay Visibility Guarantee: a live arrival time, before-and-after photo updates, and a written price before a single tool is picked up. Cotati homeowners don’t get a four-hour window and a voicemail. They get a live person on the phone, a background-checked uniformed crew, and a digital invoice they pay from a link.
We’ve worked across Cotati long enough to know that the homes behind E. Cotati Avenue hide different plumbing than the newer builds off W. Sierra Avenue. A 1970s hall bath will need a different scope than a 1999 tract home. We plan for that before demo, not after. And our 365-Day Done Right Promise means if it’s not done right, we make it right – backed in writing on every project.
Our Cotati customers keep us on schedule because we give them a realistic calendar, then hit it. Rough-in inspections, tile cure time, glass enclosure fabrication – it’s all in the plan. You’ll know who is walking into your home and when. That’s the standard, not an upgrade.
Styles & brands we work with







Small Bathroom Remodel in Cotati
A Small Bathroom Remodel in Cotati typically runs $5,000 to $12,000, and it’s the right scope when the footprint works but everything in it is tired: vanity, toilet, tub surround, floor tile, and lighting. In Cotati’s mid-century ranch homes, the half bath and hall bath are prime candidates – small enough to keep costs controlled, old enough that we plan for what’s behind the wall.
Scoping the job before demo
We don’t price a small bath on what we can see. In Cotati, that means checking for galvanized supply lines and cast-iron drains before we commit to a number. If the subfloor around the toilet flange is soft, we scope the repair as a written change order and get your sign-off before touching it.
What you’ll actually pay for
The line items are what you’d expect: demo and hauling, rough-in plumbing if needed, shower or tub surround, vanity and top, flooring, lighting, and paint. What changes the price is what we find when the walls are open. We price Cotati jobs as a plumbing-first remodel, not a cosmetic refresh – that’s how the invoice ends up matching the quote.
Shower Remodel in Cotati

A Shower Remodel in Cotati runs $3,000 to $8,500 for a shower replacement, and $4,500 to $12,000 for a full walk-in shower installation. It’s one of the most common jobs we do in Cotati because so many ranch homes still have the original fiberglass tub-shower combo that’s stained, cracked, or just too low for aging-in-place comfort.
Walk-in showers and tub-to-shower conversions
Tub-to-shower conversion in Cotati runs $3,500 to $10,000. Many homeowners keep the same drain location and go with a low-threshold Kohler shower base and a frameless glass enclosure. We’ll tell you if your existing drain can stay or if moving it is worth the cost – before we start, not after.
Frameless glass and waterproofing
A frameless glass shower enclosure gives a small Cotati bath more visual room without moving walls. We use Schluter edge trim (the metal strip that waterproofs where your tile meets the floor) on every tile shower we build. It’s a detail that keeps water where it belongs and gives the tile clean lines for years.
Trusted Brands We Service in Cotati
We install and service plumbing fixtures from Kohler and Moen, cabinetry from KraftMaid and Wellborn, and countertops from Cambria and Caesarstone. Whether it’s a Silestone vanity top or a Grohe shower system, we know how these products install and how they wear in Cotati’s water conditions. If a part fails under warranty, we handle the manufacturer claim so you don’t have to chase it. That’s part of the 365-Day Done Right Promise.
Common Bathroom Remodeling Problems We See in Cotati Homes
- Galvanized supply lines behind walls. Cotati homes built before the 1970s often have galvanized steel water lines that corrode from the inside. When we open the wall for a vanity swap, we frequently find reduced flow and rust staining – and we scope the replacement before moving forward.
- Cast-iron drain pipes at the end of their life. Many Cotati ranch homes still have original cast-iron drain stacks. They may look fine from the outside, but rust and scale reduce flow and can crack during demo. We inspect the drain path during rough-in and flag anything that needs replacing.
- Soft subfloor around the toilet flange. Decades of minor leaks in Cotati’s older baths often rot the plywood under the toilet. If the floor feels spongy near the bowl, budget for subfloor repair as part of the remodel – not as a surprise after the tile goes down.
- Undersized bathroom exhaust fans. Cotati’s cool, damp mornings mean a weak fan leads to condensation and mildew. We recommend upgrading to a properly sized exhaust fan during any full remodel, especially in smaller hall baths.
See the difference
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AfterPricing for Bathroom Remodeling in Cotati, CA
Here’s what Cotati homeowners can expect to pay, line by line. These are the ranges we quote in the field, not national averages.
| Service | Price Range in Cotati |
|---|---|
| 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 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
What moves the number is what’s behind the wall: rough-in plumbing, subfloor condition, and the finish level you choose. A KraftMaid vanity with a Cambria top costs more than a stock option – and it should. We give you the written price before work starts, and we don’t change it without a written change order and your approval. Call (254) 272-5876 for a free estimate.
Local Work We’ve Done in Cotati

In the Valparaiso area of Cotati, our crew opened a 1970s hall bath to set a Kohler shower base and immediately found the subfloor soft around the toilet flange and galvanized supply stubs feeding the vanity. We scoped the rough-in replacement and subfloor repair as a written change order before resetting the shower pan and hanging a KraftMaid vanity with a Silestone top. The homeowner got a fixed draw schedule and a punch list walk before final inspection sign-off. That’s the difference between a bid and a plan.
Cotati’s housing stock mixes mid-century ranch homes with late-1990s infill near the Old Redwood Highway corridor, and many of those older bathrooms hide galvanized supply lines and cast-iron drains behind the wall. A simple vanity swap in Cotati routinely turns into a rough-in and subfloor repair once demo starts. We plan for that on day one, which is why our scopes hold up when the walls come down.
We Also Serve Cities Near Cotati
Beyond Cotati, our crews work in Rohnert Park, Petaluma, Santa Rosa, and Sebastopol. If you’re in any of those cities, you get the same written pricing and the same Cotati standard of visibility. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Cotati locally.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati 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 Bathroom Remodeling in Cotati
Yes, any remodel that touches plumbing, electrical, or structural walls requires a Cotati building permit. We pull the permit, schedule the inspections, and walk the job through rough-in and final sign-off. Call (254) 272-5876 if you’re not sure whether your project needs one – we’ll tell you straight.
The rough-in condition drives it: galvanized lines, cast-iron drains, and subfloor rot. In Cotati’s older ranch homes, those three issues add cost that a cosmetic quote never accounts for. We price the job plumbing-first so the number you approve is real. Call for a free estimate and we’ll show you the line items.
In most Cotati ranch baths, yes – the tub drain can often be repurposed for a walk-in shower base. We’ll confirm during the site visit before we commit to a scope. If the drain does need moving, we’ll price it as a written change order, not a surprise.
A typical hall bath takes three to four weeks; a full primary bath takes five to six weeks. Tile cure time, inspections, and glass enclosure fabrication set the pace. We’ll give you a calendar before we start, and we hit it – that’s part of The Relay Standard.
An allowance is a placeholder number for finishes you haven’t picked yet. If the allowance is low and you choose Cambria or Caesarstone at the showroom, the final invoice goes up. We write Cotati quotes with realistic brand-based allowances from the start so there’s no gap between what we quote and what you choose. Call (254) 272-5876 to talk through your scope.
Written by Luca Romano, Owner at Sawyer Remodeling, serving Cotati. Founded in 2005.










