Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Brentwood
A full bathroom remodel in Brentwood typically runs $9,000-$28,000, with most tub-to-shower conversions and walk-in shower installations falling between $3,500 and $12,000. We quote every job with a flat written price before work starts, and we don’t open a wall until the homeowner approves the scope in writing. For Brentwood homeowners in 2000s-era tracts from Deer Ridge to Shadow Lakes, that matters - because the same builder-grade shower pans and mastic-set tile are failing on the same fifteen-year cycle across the city, and the real damage hides behind the drywall. Call (510) 686-6370 to schedule your free estimate.
Our crews serve Brentwood from our San Francisco Bay Area dispatch office, and we know the local conditions that move a quote: the Altamont clay soils that shift seasonally, the tract-home framing standards from the 2000-2008 boom, and the Contra Costa County permit process for bathroom remodels. We’ve worked the subdivisions off Balfour Road, the streets near Veterans Park, and the newer builds toward the eastern edge of town. That local knowledge shows up in how we write the contract - with allowances for what we expect to find, not surprises after demolition starts.
Why Rowan Construction Group Walnut Creek Is Brentwood’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. Brentwood homeowners find us the same way they research appliances - they read the three-star reviews, they want the price range on the page, and they expect a text confirmation after the call. We answer calls with a live person 24/7, send background-checked and uniformed technicians, and leave a photo record of every visit as standard, not an upgrade.
Our Bathroom Remodeling team knows the specific failure patterns in Brentwood’s housing stock. The 2000-2008 tract homes from Shadow Lakes to the Deer Ridge area were built fast on former orchard land, and the same OSB sheathing, basic framing, and low-end waterproofing systems are aging out simultaneously. We don’t guess at what’s behind the tile. We write an inspection-first scope, include framing and substrate allowances, and price any change in writing before we touch it. That’s the discipline that has kept our projects within a few percent of the agreed cost across four thousand jobs.
The 365-Day Done Right Promise applies to every Brentwood bathroom we touch. If it’s not done right, we make it right - backed by The Haven Standard, not a handshake. And if you have a written estimate from another contractor, we’ll review it line by line at no charge. Clause 1 of the Haven Standard is the whole point: the price is written before anyone starts.
Our Bathroom Remodeling Services in Brentwood

Full Bathroom Remodeling
A full bathroom remodel in Brentwood means working within 2,000-3,500 square foot tract layouts where the original builder squeezed function into tight footprints. We strip to studs, inspect the substrate and framing, and rebuild with proper waterproofing - Schluter or equivalent membrane systems, not mastic and hope. Because Brentwood’s 2000s homes used OSB subflooring and minimal blocking, we often find soft spots around tubs and toilets once the old fixtures come out. We sister damaged framing and replace subfloor as needed, with the cost written into the original allowance or priced in a signed change order before we proceed. Typical range in Brentwood: $9,000-$28,000.

Walk-In Showers & Shower Remodeling
Walk-in shower installation in Brentwood runs $4,500-$12,000 depending on size, glass specification, and whether we’re converting from a tub or rebuilding an existing shower. We install curbless and low-threshold entries with proper slope-to-drain engineering, and we spec frameless glass enclosures from local suppliers for fast turnaround. In Brentwood’s inland climate - summer highs routinely hit 105-112°F - we schedule exterior window and ventilation work for early morning to keep crews and materials within spec. The shower pan is the critical detail: we use bonded waterproofing membranes with flood testing before tile, because the old builder-grade pans in these tracts fail at the curb and threshold first.

Tub-to-Shower Conversion
This is our most requested Brentwood service, and it’s where the hidden damage shows up most predictably. Tub-to-shower conversion in Brentwood costs $3,500-$10,000 for a standard alcove, but the real variable is what’s under the old tub. In the Deer Ridge tract off Balfour Road, we opened a 2004 primary bath and found OSB subfloor softened by years of slow pan leakage, plus the diagonal crack radiating from the door corner that Altamont clay movement leaves across these subdivisions. We sistered the framing, replaced the subfloor, wrote a change order for the dry rot and framer’s repair, and had the customer approve it in writing before we set the new Schluter pan and Kohler valve rough-in. Final walkthrough was clean, and the permit file closed with inspection sign-off on the first pass. That’s how we handle every Brentwood conversion - inspection first, allowances in writing, change orders approved before work.

Vanities, Tile & Fixtures
Brentwood vanity installation runs $800-$3,000 depending on size, plumbing relocation, and countertop material. We source KraftMaid and Wellborn cabinets through our vetted supplier network, with Cambria quartz available for tops that see daily wear. Tile work includes proper substrate preparation - cement board or equivalent, never direct-to-drywall - because the seasonal wet-dry cycle and clay soil movement in Brentwood will crack anything less. We spec Kohler and Toto fixtures for durability and parts availability, and we document every rough-in dimension with photos before close-up so the homeowner has a record behind the wall.

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 Brentwood
We maintain sourcing depth across fifty-plus vetted brands so our written quotes carry honest numbers rather than inflated ones. For Brentwood bathroom projects, we regularly specify KraftMaid and Wellborn cabinetry, Cambria engineered stone surfaces, and Kohler valve and fixture packages. These aren’t showroom upgrades - they’re the baseline we quote, because we’ve tracked failure rates across brands since 2007 and we know what lasts in hard-water, high-heat inland conditions. Our relationships with regional distributors mean replacement parts arrive in days, not weeks, if something needs warranty service. The customer gets the model numbers, the spec sheets, and the install documentation in their project file.
Common Bathroom Remodeling Problems We See in Brentwood Homes

- Failed shower pans leaking into first-floor ceilings. The original 2000s shower pans and mastic-set tub surrounds in Brentwood tracts fail at 15-20 years, so the leak shows up in the ceiling below before any tile looks wrong. A bathroom quote that never opens the wall can’t see it, and the repair scope doubles once the damage is exposed.
- Altamont clay movement cracking tile and glass. Diagonal cracking at door corners and slab heaving from expansive clay soils gets read as cosmetic and skipped, then the new tile and glass enclosure follow the same crack within a season. We inspect for movement patterns before we set hard finishes, and we engineer expansion joints where the substrate requires them.
- Builder-grade supply lines and undersized venting. The original plumbing in 2000-2008 Brentwood homes used minimum-code materials and routing, often with unvented or wet-vented configurations that don’t meet current standards. Once the wall is open for remodel, code requires correction - and if permits and inspection sign-off aren’t part of the original scope, the homeowner eats that cost later.
- Unpermitted prior homeowner work surfacing during demo. In a market where Brentwood homes turned over rapidly during the 2010s, we regularly find unpermitted tile-over-tile, non-GFCI outlets, and improvised venting that has to be brought to code before inspection. We pull permits on every job and schedule inspections at rough-in and final, so nothing gets buried behind finished surfaces.
Pricing for Bathroom Remodeling in Brentwood, CA
These are the ranges we quote in writing for Brentwood homeowners, based on 2024-2025 material costs and labor rates for Contra Costa County. Every quote is a flat price with a written scope and written warranty; “call for a quote” is not an option here.
| Service | Price Range in Brentwood |
|---|---|
| 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 within these ranges: wall relocation (structural and plumbing), substrate repair (framing, subfloor, dry rot), fixture and material grade, and whether the project requires engineered drawings for load or soil conditions. We write allowances for expected conditions into every Brentwood contract - typically $800-$2,500 for framing and substrate repair on a standard tub conversion - and any surprise beyond that allowance is priced and approved in writing before we proceed. 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 number the customer agreed to.
Call (510) 686-6370 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 Brentwood

Our crews work across the inland East Bay and Tri-Valley, including Bathroom Remodeling in Brentwood and surrounding cities: Antioch to the west, Danville and San Ramon across the Diablo Range, and Livermore to the south. Each city’s housing stock, soil conditions, and permit requirements shape how we write the scope - Brentwood’s 2000s tract boom is distinct from Antioch’s older inventory or Danville’s custom builds, and our quotes reflect that local knowledge.
Serving Brentwood, CA - Our Local Coverage Area
We’re based in the Brentwood 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 Brentwood

Because in Brentwood’s 2000-2008 tract homes, the damage hides behind the tile and under the tub. The line item for wall and floor opening covers controlled demolition and initial substrate inspection; the allowance reserves budget for what we expect to find, based on patterns we’ve seen across identical homes. If we find soft OSB, failed pan membrane, or clay-movement cracking, the repair is already priced in the allowance or written as a change order before we touch it. Call (510) 686-6370 for an exact quote - estimates are free.
Yes. Contra Costa County requires permits for any plumbing fixture relocation, shower pan replacement, or wall modification in a bathroom. The permit triggers inspections at rough-in (plumbing, electrical, framing) and final, which verifies waterproofing, GFCI protection, and venting to current code. We pull permits on every job and include the cost in our written quote. Call (510) 686-6370 to schedule your free estimate.
Unfortunately, yes. The builder-grade shower pans and mastic-set tile in 2000-2008 Brentwood tracts fail on a predictable 15-20 year cycle, and the leak reaches the first-floor ceiling before the shower tile looks damaged. We’ve replaced dozens of these pans in Deer Ridge, Shadow Lakes, and similar subdivisions. The repair requires opening the ceiling below to assess framing damage, then rebuilding the shower with a bonded waterproofing membrane and flood-tested pan. Call (510) 686-6370 for an inspection and written quote.
It does. The Altamont-series clay soils beneath Brentwood’s old orchard ground shrink and swell dramatically with the seasonal wet-dry cycle, creating diagonal cracking at door corners and slab movement that transfers stress to rigid finishes. A bathroom remodel with heavy tile, glass enclosures, and fixed plumbing connections will crack if the substrate movement isn’t engineered into the design. We inspect for existing movement patterns before we set hard surfaces, and we specify expansion joints and flexible sealants where the structure requires them. Call (510) 686-6370 to discuss your specific conditions.
A typical full bathroom remodel in Brentwood costs $9,000-$28,000, with a standard draw schedule of 25% at contract, 50% at material delivery and rough-in completion, and 25% at final walkthrough and permit sign-off. Allowances for expected substrate repair - usually $800-$2,500 on a tub conversion - are held in reserve and released only if needed; if not used, the customer keeps the credit. Any condition beyond the allowance is photographed, priced in a written change order, and approved before work proceeds. Under Clause 1 of the Haven Standard, the price is written before anyone starts, and no change proceeds without a signed change order. Call (510) 686-6370 for your specific quote - estimates are free.
Ready to get a written price before anyone picks up a tool? Call (510) 686-6370 to schedule your free estimate. We’ll inspect your Brentwood bathroom, document existing conditions with photos, and deliver a flat written quote with scope, warranty, and allowances - so you know what the number covers before work starts. Bring a competitor’s written estimate and we’ll review it line by line at no charge.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Brentwood since 2007.







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