Fast, Reliable Bathroom Remodeling Across Montclair
Bathroom remodeling in Montclair typically runs $14,000 – $28,000 for a full mid-century tract home refresh, with garage-conversion baths landing between $18,000 and $35,000 depending on abatement and slab work. Most projects in the 91763 ZIP take two to four weeks once permits clear. Call (866) 403-9834 for a free, line-item estimate specific to your lot and existing plumbing.
We’ve worked the tract neighborhoods between Central Avenue and the foothills long enough to know what a Montclair bathroom remodel actually involves: pre-1978 framing, clay-heavy soil under the slab, side-yard access that barely fits a wheelbarrow, and neighbors who live ten feet from your back wall. Neil Bradshaw built Home Base ADU Builders around that reality. Not the glossy showroom version.
Why Home Base ADU Builders Is Montclair’s Preferred Bathroom Remodeling Company
Most of the homes we remodel in Montclair were built between 1955 and 1975. That means single-story stucco, concrete slab floors, galvanized supply lines, and cast-iron drains that have been underground for sixty years. None of that scares us. It’s just the work.
We’re licensed, insured, and bonded, and we pull permits on every Montclair job. When the inspector walks the rough-in on a rear garage conversion, we want the paperwork clean and the framing exposed. No shortcuts on a lot where the neighbor is watching from their kitchen window.
Our Bathroom Remodeling team handles the full scope: demo, plumbing rough-in, electrical, waterproofing, tile, glass, and finish carpentry. Because we also build ADUs and kitchens, we know how a bathroom fits into the larger picture, whether you’re prepping a rear unit for rent or upgrading the main bath for yourself.
Serving Montclair from our Fountain Valley base means we schedule material deliveries around your street’s parking reality, not against it. We stage on the driveway. We keep the sidewalk clear. And we tell you, before we start, which days the dumpster arrives and which days it leaves.
Our Bathroom Remodeling Services in Montclair
Full Bathroom Remodels
A full Montclair bathroom remodel means stripping to studs, replacing the valve and drain lines, redoing the shower pan, and often relocating the toilet or vanity to make the original 5-by-8 footprint work harder. In these 1950s and 1960s tract homes, we usually find the floor framing has settled and the old mud-bed tile is holding moisture. We fix both before the new tile goes in.
Garage-Conversion Bathrooms
This is the one that catches people off guard in Montclair. Converting a rear-corner garage into a bathroom for an ADU or rental means the wet wall often lands on the rear lot line, with no alley to buffer you from the neighbor behind. We handle the window-privacy negotiation and the vent discharge placement before we frame, because redoing a wall after permit review costs a week and a lot of goodwill.
Walk-In Shower and Tub Conversions
We replace tubs with walk-in showers for Montclair homeowners who want to age in place. The 91763 stock skews toward single-level homes, which is actually ideal for this work: no stair-transfer issues, and the existing drain location usually works. Where the slab is clay-heavy, we check the fall and add a secondary membrane so the pan doesn’t crack five years out.
Access and Half-Bath Additions
Adding a half-bath off a rear bedroom or laundry area is common on Montclair lots where the footprint allows a small bump-out. Side-yard access is the controlling factor on cost. If the only route to the work area is a four-foot side yard shared with the neighbor, material delivery and debris hauling get priced accordingly. We’ve done enough of these to give you an honest number, not a guess.
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.
Trusted Brands We Service in Montclair
We install the fixtures and systems Montclair homeowners actually ask for: Delta and Moen valves, Schluter waterproofing, James Hardie backer for wet areas, and Kohler or American Standard fixtures when the budget allows. For slab-on-grade remodels where floor height is tight, we often spec low-profile pans and linear drains. No single-brand pitch. You get what fits the job, sourced locally so a wrong size doesn’t stall the rough-in for a week.
Common Bathroom Remodeling Problems We See in Montclair Homes
- Cast-iron drains gone soft at the bell: On 1960s plumbing, the cast iron under the slab has been corroding for decades. We camera the line before we quote, because the difference between a $200 valve swap and a $4,000 drain replacement changes the remodel budget entirely.
- Lead and asbestos hiding in garage-conversion walls: Pre-1978 homes in 91763 routinely test positive for lead paint on old trim and asbestos in the drywall joint compound. Skipping the test is how a two-week demo becomes a six-week stall. We test first, quote the abatement, and schedule accordingly.
- Slab floor height that fights the drain: Clay-heavy alluvial soil at the edge of the foothills means slabs move, and the original drain slope is rarely what it should be sixty years later. We re-slope the pan and check the fall before tile, or the shower puddles forever.
- Rear-lot-line window and vent conflicts: With no alley system, your new bathroom window faces directly into a neighbor’s yard or patio. Montclair permit review will flag this. We walk the sightline with the abutting homeowner before we frame, and we keep the fan discharge off their seating area.
Pricing for Bathroom Remodeling in Montclair, CA
Here’s what you can expect in the 91763 ZIP right now, based on the work we’ve done in the tract between Monte Vista Avenue and the 10 Freeway:
Full hall-bath remodel (5×8, typical 1960s tract): $14,000 – $22,000 for a tub-to-shower conversion, new valve, tile, vanity, and fixtures. Primary-bath remodel with relocating plumbing: $22,000 – $32,000 when moving a toilet or shower wall. Garage-conversion full bath: $18,000 – $35,000 depending on lead/asbestos abatement, slab coring for drains, and privacy window glazing. Permit and plan fees: $800 – $2,200 depending on the scope and city review time. The items that move your number the most: whether the cast-iron drain inside the slab is still sound, whether abatement is triggered, and whether the work area is accessible from the driveway or only through a narrow side yard. Call (866) 403-9834 and we’ll give you a line-item price before you commit to anything.
We Also Serve Cities Near Montclair
Our crews work regularly in Claremont, Ontario, Upland, and La Verne, following the same 91763 playbook: test before demo, pull permits, respect the neighbor’s view. Montclair is our western edge of the Inland Empire footprint, but the housing stock and soil conditions carry east.
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
No formal sign-off is required by the City of Montclair for a bathroom window facing a rear lot line, but building code does require privacy glazing or a sill height that limits sightlines, and the permit reviewer will check this. Practically, we walk the window placement with the abutting neighbor before we frame. A frosted window and a high sill solve most objections in minutes. Call (866) 403-9834 to have us check your rear wall geometry.
Yes, almost always. Homes built before 1978 in Montclair commonly contain lead paint on door trim and asbestos in the drywall joint compound. California law requires certified testing and abatement when those materials are disturbed during demo, which a bathroom rough-in will definitely do. We include the cost in the estimate instead of discovering it mid-demo.
If the work area can’t be reached from the driveway, material and debris have to go through a narrow side yard. That adds labor hours for carrying, and it can require smaller material lifts to avoid damaging the neighbor’s fence. On a typical Montclair lot, limited access adds $1,500 – $3,000 to the total quote. We’ll walk the access path before we price the job.
Montclair restricts construction noise to standard weekday hours, generally 7 a.m. to 7 p.m., with shorter weekend windows or none at all depending on the current municipal code. On dense tract lots with neighbors ten feet away, we keep demolition to the early part of the day and save quiet work, tile setting, trim, grout, for the afternoon. Your neighbors notice, and it keeps everyone civil.
It can. Montclair’s 91763 ZIP sits partly within a wildfire-prone wildland-urban interface zone near the San Gabriel foothills. If your rear addition or garage conversion falls in that mapped area, the building department may apply WUI requirements to roofing materials, vent screening, and sometimes exterior wall assembly on the new work. We check the official hazard map for your parcel before quoting.
Contact Home Base ADU Builders for Your Montclair Bathroom Remodel
If you’re planning a bathroom remodel in Montclair, the first step is a free estimate with real numbers. We’ll walk the lot, test for lead and asbestos if it’s a pre-1978 home, camera the drain line, and give you a written line-item quote before you have to decide anything. Call (866) 403-9834 to schedule yours.
Written by Neil Bradshaw, Owner at Home Base ADU Builders, serving Montclair and the Inland Empire.