Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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Before
AfterFast, Reliable Bathroom Remodeling Across Montclair
A full bathroom remodel in Montclair typically runs $9,000-$28,000, with tub-to-shower conversions starting around $3,500 and walk-in shower installations between $4,500-$12,000. Most Montclair projects finish within 2-4 weeks once permits clear, though San Bernardino County’s soils-report requirement for slab work can add 10-14 days to the front end. Call (909) 373-9612 to schedule your free estimate.
We’re the Bathroom Remodeling crew Rowan Construction Group dispatches from our Inland Empire office to Montclair daily. That local dispatch matters because Montclair isn’t just another dot on a service map. The city sits on the San Bernardino County side of the county line, which means every permit routes through San Bernardino County Building & Safety, not LA County. The soils beneath your slab are alluvial fan deposits from the San Gabriel Mountains, a patchwork of expansive clay and compacted gravel that heaves through wet-dry cycles. And the summer heat here, regularly cresting 105°F, shrinks the workable window for concrete pours and adhesive-set tile. A contractor who treats Montclair like Pomona, or like any coastal city, misses all three. We don’t.
Why Rowan Construction Group Rancho Cucamonga Is Montclair’s Preferred Bathroom Remodeling Company
We’ve delivered 4,000-plus projects since 2007, every one with a written price before work started and a documented photo record when the crew left. That discipline travels with us to Montclair. Our crews are background-checked, uniformed, and briefed on San Bernardino County’s specific submittal requirements before they cross the county line.
Response time to Montclair runs same-day or next-day for estimates, depending on inspection scheduling. We’re familiar with the ranch-style tract homes clustered near Montclair Plaza, the 1950s-1970s slabs along Central Avenue, and the newer infill near the 10 Freeway corridor. Each zone presents different soil conditions and different vintage plumbing.
Our 365-Day Done Right Promise applies here exactly as written: if it’s not done right, we make it right. The guarantee is printed on every page, backed by a terms page, not an asterisk. And our Free Second Opinion on Any Written Estimate means you can bring a competitor’s Montclair bid and we’ll review it line by line at no charge.
Calls are answered by a live person 24/7. The photo record from every visit is included as standard, not an upgrade. Under Clause 1 of The Haven Standard, the price is written before anyone starts.
Our Bathroom Remodeling Services in Montclair
Full Bathroom Remodeling
A full bathroom remodel in Montclair strips the room to slab and studs, then rebuilds with new layout, fixtures, tile, and ventilation. In Montclair’s post-WWII ranch homes, this almost always means cutting the concrete slab for drain relocation, which triggers San Bernardino County’s soils-report requirement if the cut exceeds certain dimensions or if the slab shows existing cracking from clay heave. We scope this during the estimate visit, photograph the slab condition, and price the soils report and engineered patch into the written quote upfront. No surprise change orders mid-job. A typical full remodel in Montclair runs $9,000-$28,000.
Tub-to-Shower Conversion
This is our most called-for service in Montclair. Homeowners in the 1950s-1970s ranch tracts are tired of stepping over tub walls. Converting to a walk-in shower means removing the tub, cutting the slab for a new drain location or adjusting the existing p-trap, and setting a shower pan that won’t crack when the clay beneath it moves.
On a 1958 slab-on-grade ranch near the Montclair Plaza area off Central Avenue, our crew opened a hall bath for a tub-to-shower conversion and found the subfloor edges cracked where reactive clay had heaved through wet-dry cycles. We brought in a soils report, thickened the slab patch under the new pan, set a Kohler cast-iron base, and ran the rough-in with a bonding flange before the county inspector gave inspection sign-off. That job finished at $6,800, within 3% of the written price. Typical tub-to-shower conversions in Montclair run $3,500-$10,000.
Walk-In Shower Installation
New walk-in showers in Montclair range from curbed acrylic units to curbless, frameless glass enclosures with linear drains. The curbless option requires precise slab leveling, which is where Montclair’s expansive clay becomes critical. If the slab has heaved even 1/4-inch, a curbless pan will pool water. We check with a long level, photograph the readings, and specify either slab grinding or a tapered preslope in the written scope. Walk-in shower installations in Montclair typically cost $4,500-$12,000.
Small Bathroom Remodels
Powder rooms and guest baths in Montclair’s older ranches are often 5×7 feet with the toilet, pedestal sink, and tub crammed against three walls. A small bathroom remodel reconfigures within the existing footprint, which avoids the soils-report trigger but still demands careful moisture management in a tight envelope. We spec exhaust fans at minimum 50 CFM, often upgrading the duct run through the attic. Small bathroom remodels in Montclair stay between $5,000-$12,000.
Vanities, Tile & Fixtures
We source vanities and fixtures from fifty-plus vetted brands, including Kohler and Toto, with local supply-house relationships that keep lead times short for Montclair jobs. Tile selection affects both price and schedule: large-format porcelain requires a flat substrate, which may mean self-leveling compound over a heaved slab, while smaller mosaics tolerate minor irregularity. We explain this during material selection so the quote reflects reality.
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.
Before
AfterTrusted Brands We Service in Montclair
Our supply chain runs through fifty-plus vetted brands, and we maintain local stock relationships that matter for Montclair’s schedule. For bathroom fixtures, we regularly specify Kohler cast-iron shower bases and Toto toilets for their track record on slab installations. For tile, we work with distributors who stock California-compliant thinset and grout with modified polymers for high-heat curing conditions. For windows in bath additions or bump-outs, we source from CWS and ECO Window Systems, both with San Bernardino County-approved Title 24 packages. We don’t inflate quotes with boutique brands you didn’t ask for. The written price names the exact SKU, so you can screenshot it and compare.
Common Bathroom Remodeling Problems We See in Montclair Homes
- Slab cracking from expansive clay heave. The reactive clay beneath Montclair’s ranch tracts swells in winter rains and shrinks in summer drought, cracking slab edges where bathroom walls bear. We photograph the crack pattern, determine if it’s active, and specify either epoxy injection or an engineered patch with thickened steel reinforcement.
- Original galvanized drain lines. Homes built through the 1970s often have galvanized steel drains that have narrowed from interior corrosion. We scope the line with a camera during estimate, show you the footage, and price replacement to ABS or PVC in the written quote.
- Inadequate exhaust ventilation. Montclair’s summer heat and winter humidity both drive moisture load. Original baths often have no fan, or a noisy 30 CFM unit vented into the attic. We spec proper ducting to exterior, sized to the room volume, and show the calculation in the scope.
- Adhesive failure from heat-scheduling mistakes. We’ve been called to repair tile jobs where a contractor set thinset at 2 PM in August, and the rapid surface cure left a powder bond beneath. We schedule adhesive work for early morning, monitor ambient and substrate temperature, and use polymer-modified thinset rated for accelerated conditions.
Pricing for Bathroom Remodeling in Montclair, CA
Every project gets a flat written price with line-item scope before work starts. No “call for a quote.” Here’s what bathroom remodeling costs in Montclair’s market:
| Service | Price Range in Montclair |
|---|---|
| Bathroom Remodel (full) | $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 you within these ranges: slab condition and whether a soils report is required; fixture and tile grade; plumbing relocation distance; and whether the layout changes. We scope all of this during the estimate visit, photograph the existing conditions, and deliver the written price within 48 hours. Estimates are free. Call (909) 373-9612.
Three factors specific to Montclair can add cost that coastal-market bids skip: the San Bernardino County soils report and engineered foundation plan for slab work; slab patching with thickened steel reinforcement over expansive clay; and heat-management measures for summer scheduling. We price these explicitly, not as buried contingencies.
We Also Serve Cities Near Montclair
Our crews work the full Inland Valley corridor. We regularly handle Bathroom Remodeling in Montclair and neighboring Claremont, Ontario, Pomona, and La Verne. Each city has its own permitting jurisdiction and soil conditions, and we adjust our bids accordingly. A Pomona job routes through LA County prescriptive design; a Montclair job through San Bernardino County engineered plans. We know which is which before we quote.
Serving Montclair, CA - Our Local Coverage Area
We’re based in the Montclair 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 Montclair
Yes, and San Bernardino County Building & Safety issues it, not the City of Montclair. Any work involving plumbing relocation, electrical changes, or structural modification requires a permit. If your project cuts the slab for drain relocation, the county will likely require a soils report and engineered foundation plan, which we include in our written scope and price. Call (909) 373-9612 for an exact quote - estimates are free.
Three local factors: San Bernardino County’s soils-report requirement for slab work; the frequent need for engineered slab patching over expansive clay; and heat-management scheduling that compresses the workable day. Coastal contractors often miss these in their bids, then hit homeowners with change orders. Our written price includes all three if they apply to your job. Call (909) 373-9612 for a line-item quote.
Yes, if the layout stays fixed, the slab needs no cutting, and you select mid-grade fixtures and tile. Our small bathroom remodel range is $5,000-$12,000, and we’ve delivered many Montclair powder rooms at the lower end by keeping the toilet, sink, and tub in original positions and upgrading finishes within the existing envelope. Call (909) 373-9612 - we’ll tell you honestly if your scope fits.
It compresses adhesive and concrete work to early morning hours. Above 90°F ambient, standard thinset cures too fast at the surface, leaving a weak bond beneath. We schedule tile setting and slab patching for 6 AM starts in July and August, use polymer-modified products rated for accelerated cure, and actively mist-cure concrete to prevent shrinkage cracking. This adds a day or two to schedule but eliminates callback risk. Call (909) 373-9612 to discuss timing for your project.
Five things: a line-item scope naming every material SKU and task; a flat total price with no open-ended allowances; the permit jurisdiction and submittal timeline; the 365-Day Done Right Promise terms; and a change-order clause stating no work proceeds on any alteration until the change order is signed. Under Clause 1 of The Haven Standard, the price is written before anyone starts. Every time. On every trade. Call (909) 373-9612 and we’ll show you what our written quote looks like before you commit to anything.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Montclair and the Inland Empire since 2007.