Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across San Mateo
A full bathroom remodel in San Mateo typically runs $9,000-$28,000, with most projects taking 3-6 weeks from permit pull to final inspection. We’re Rowan Construction Group, and our crews work San Mateo regularly - from the Baywood ranches near the 101 to the hillside homes above Crystal Springs Road. Call (628) 300-4376 to schedule your free estimate; we’ll deliver a written price before anyone picks up a tool.
San Mateo’s housing stock tells a specific story. The post-WWII wood-frame ranches and bungalows in Beresford and Baywood, built mostly between the 1940s and 1960s, predate modern seismic, electrical, and energy codes. That matters in a bathroom remodel because opening the walls almost always reveals something the original builder never anticipated: knob-and-tube wiring, undersized framing, failed waterproofing, or moisture damage in the subfloor. We’ve remodeled enough bathrooms in San Mateo to know what to look for before we start, and we build those findings into your written quote as allowances - not surprises.
Why Rowan Construction Group Oakland Is San Mateo’s Preferred Bathroom Remodeling Company
We’ve delivered more than 4,000 projects since 2007, every one with a written price before work started and a documented photo record when the crew left. San Mateo homeowners find us because they read the three-star reviews and want a contractor who puts the number in writing. Our Bathroom Remodeling team doesn’t ask you to “call for a quote” - Clause 1 of The Haven Standard requires the price in writing before any work starts, every time.
Our San Francisco Bay Area office coordinates dispatch and scheduling for San Mateo; crews serve the city locally. Response time to San Mateo neighborhoods typically runs 24-48 hours for an initial walkthrough. We’re familiar with the specific permit requirements at San Mateo’s Community Development Department, including the geotechnical reviews that eastern Baywood projects on bay-fill soils sometimes trigger. That local fluency saves weeks on the schedule.
Our 365-Day Done Right Promise applies to every San Mateo project: if it’s not done right, we make it right. The guarantee is printed on every page and backed by a terms page, not an asterisk. We also offer a Free Second Opinion on any written estimate - bring a competitor’s quote and we’ll review it line by line at no charge.
Our Bathroom Remodeling Services in San Mateo

Full Bathroom Remodeling
A full bathroom remodel in San Mateo means stripping to studs, updating plumbing and electrical to current code, and rebuilding with modern waterproofing and ventilation. In the Beresford ranches we work on, this almost always includes replacing the original cast-iron drain stack, upgrading from 15-amp to 20-amp GFCI circuits, and installing an exhaust fan ducted to the exterior - not just the attic, where decades of moisture have degraded the original framing. We write allowances for each of these findings into your contract after our inspection-first walkthrough.

Walk-In Showers & Shower Remodeling
Walk-in shower installation in San Mateo runs $4,500-$12,000, depending on whether we’re converting an existing footprint or expanding into adjacent space. The frameless glass enclosures we source from Mr-Glass require precise leveling - a challenge in the hillside homes west of El Camino Real, where settling and soil movement are more pronounced than on the flat bay-fill east side. We measure the slab or subfloor during walkthrough and price any leveling or reinforcement in writing before demolition starts.

Tub-to-Shower Conversion
Tub-to-shower conversion in San Mateo costs $3,500-$10,000 and is one of our most requested projects in the city’s smaller 1950s bathrooms. The catch: those original tubs often sit on rotted subfloors, especially in Baywood homes where marine humidity has crept through low-clearance crawl spaces for sixty years. We pull a section of flooring during walkthrough to check deck integrity. If it’s soft, we price the repair as a written line item before we touch the tub. No emergency change orders. That’s The Haven Standard.

Vanities, Tile & Fixtures
Vanity installation in San Mateo runs $800-$3,000, with tile and fixture selections driving the upper end. We source Kohler and Toto fixtures through our fifty-plus vetted brand network, which keeps the written quote honest - no inflated retail markups. In San Mateo’s mid-century homes, we often find the original vanity supply lines are galvanized steel, not copper. We note this during walkthrough and include replacement in the scope if needed.

What happens when you call
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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.
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AfterTrusted Brands We Service in San Mateo
We maintain sourcing relationships with Mr-Glass for frameless shower enclosures, Therma-Tru for bathroom entry doors where moisture resistance matters, and Kohler and Toto for fixtures and rough-in valves. For San Mateo customers, this means parts are available without the delays that plague contractors who order job-by-job. A broken shower door hinge or a cracked ceramic basin doesn’t wait three weeks for shipping. Our written quotes reflect actual distributor pricing, not placeholder numbers that inflate later.
Common Bathroom Remodeling Problems We See in San Mateo Homes

- Rotted subfloor beneath original tile. In Baywood and Beresford ranches, the combination of marine humidity and sixty-year-old waterproofing means the subfloor deck is often soft around the tub and toilet. We find this during our inspection-first walkthrough, not when the tub is already in the driveway.
- Knob-and-tube or undersized wiring behind bathroom walls. Pre-1960s San Mateo homes frequently have 15-amp circuits with no ground, or active knob-and-tube that must be replaced when walls are opened. We build electrical allowances into the contract so the permit scope covers it from day one.
- Failed moisture barriers in low-clearance crawl spaces. San Mateo’s persistent marine humidity wicks into wall cavities through crawl spaces with inadequate ventilation. A bathroom remodel that doesn’t address vapor management - proper exhaust ducting, sealed crawl-space vents, or conditioned-air introduction - can fail inspection or regrow mold within a season.
- Cracked cast-iron drains and undersized framing. The 1950s tub alcoves in east-side ranches were often framed with 2x4s on 24-inch centers, not the 16-inch centers current code requires for tile backing. We reframe load-bearing walls as needed, priced and approved in writing before tile goes up.
Pricing for Bathroom Remodeling in San Mateo, CA
Here are the line-item ranges for San Mateo’s market. Every quote we deliver is flat-priced with a written scope - no “call for pricing,” no open-ended allowances.
| Service | Price Range in San Mateo |
|---|---|
| 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 |
| Bathroom Vanity Installation | $800-$3,000 |
What moves the number? Three things specific to San Mateo. First, the east-west soil split: eastern Baywood projects on bay-fill soils may need geotechnical review and engineered under-slab prep, while western hillside work needs retaining-wall and slope-stability coordination. Second, the age of the housing stock - pre-1960s homes almost always need electrical and plumbing upgrades once walls are open. Third, permit complexity: San Mateo’s Community Development Department requires detailed plans for any layout change, and we include permit submittal and inspection scheduling in our flat price.
We opened the subfloor in a 1952 Baywood ranch bath and found a cracked cast-iron drain, undersized 1950s framing around the tub alcove, and no moisture barrier under the original tile. After an inspection-first walkthrough, our crew wrote allowances into the contract for the drain rough-in, reframed the load-bearing tub wall, and priced the subfloor repair as a written change order before we touched a single tile. The finished walk-in shower with a frameless glass enclosure passed inspection sign-off on the first try because every surprise was disclosed and approved in writing up front.
Call (628) 300-4376 for your free estimate. Bring a competitor’s written quote and we’ll review it line by line at no charge.
We Also Serve Cities Near San Mateo

Our crews work throughout the Peninsula and East Bay. If you’re in San Mateo or nearby San Carlos, Redwood City, Menlo Park, or Alameda, the same flat-price quoting, documented photo record, and 365-Day Done Right Promise apply. Dispatch and scheduling are coordinated from our San Francisco Bay Area office.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo

Because pre-1960s San Mateo homes almost always hide outdated wiring, failed waterproofing, or rotted subfloor that wasn’t visible before demolition. We control this with an inspection-first walkthrough and written allowances in your contract - so the cost is planned, not sprung on you mid-project. Call (628) 300-4376 for an exact quote; estimates are free.
Yes, if you’re moving fixtures, altering walls, or updating electrical or plumbing. San Mateo’s Community Development Department requires permitted plans for any layout change, and we include permit submittal, fees, and inspection scheduling in our flat written price. Call (628) 300-4376 to schedule your free estimate.
Yes. San Mateo’s marine humidity wicks through low-clearance crawl spaces into wall cavities, accelerating wood rot and making vapor management critical. We inspect crawl-space ventilation during walkthrough and include moisture-barrier or exhaust-ducting upgrades in the scope when needed. Call (628) 300-4376 for an exact quote; estimates are free.
Yes. Tub-to-shower conversion in San Mateo runs $3,500-$10,000 and fits most 1950s bathroom footprints. We check subfloor integrity and framing during walkthrough, since original tubs often hide soft decking. Everything is priced in writing before we start. Call (628) 300-4376 to schedule your free estimate.
No work proceeds on a change until the change order is signed. That’s the administrative discipline Haven acquired Rowan for, and it’s why our projects finish within a few percent of the agreed price. We disclose likely surprises during inspection-first walkthrough, write allowances into the contract, and price any unforeseen condition as a signed change order before we address it. Call (628) 300-4376 for an exact quote; estimates are free.
Written by Grant Rowan, Owner at Rowan Construction Group, serving San Mateo since 2007.







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