Fast, Reliable Bathroom Remodeling Across Montclair
A bathroom remodel in Montclair typically runs $14,000 to $28,000 for a full gut-and-replace on a 1950s-60s tract home, and most jobs take three to five weeks once permits are pulled. The wildcard is what’s hiding behind those original tiles, and in Montclair it’s almost never just tile. Call us at (855) 617-6356 for a free estimate that accounts for the real condition of your home, not a fantasy bid.
We work throughout the 91763 zip code, from the ranch-style streets off Ramona Avenue to the blocks near Kingsley and Palo Verde. Our crews know what a 1962 hall bath looks like under the surface, because we’ve opened enough of them to stop being surprised. That’s the difference between a quote that holds and one that doubles after demolition.
Why Holloway ADU Builders Is Montclair’s Preferred Bathroom Remodeling Company
Neil Trescott built Holloway ADU Builders around a simple idea: the right contractor should tell you what the walls will reveal before you start swinging a hammer. In Montclair, that means understanding the original galvanized supply lines, ungrounded wiring, and paper-backed insulation common to post-war tract construction. We don’t quote a cosmetic refresh on a home that needs a mechanical and electrical overhaul. We quote the real job, in writing, with allowances for the known unknowns.
Our Bathroom Remodeling team has spent enough time in Pomona Valley homes to know which corners were framed with wet lumber, where the original vent stacks run, and why slab-on-grade floors matter when you’re moving a drain line. Local homeowners tell us the same thing after we finish: the process was calmer than they expected, and the price didn’t lurch. That reputation, built job by job across Montclair, is what we care about more than any marketing claim.
We’re based in Tustin, but we schedule Montclair work in focused blocks so our crews aren’t commuting back and forth mid-project. That means consistent days on site and a project manager who answers the phone when you call. No call centers, no subcontracted runaround.
Our Bathroom Remodeling Services in Montclair
Bathroom Rough-In and Inspection-First Scope
Before we sign a contract, we walk the bathroom with you and document what’s actually there: the age of the wiring, the type of supply piping, the condition of the framing where water has been sitting. In Montclair, where most homes still carry original 1960s galvanized or early copper, this pre-inspection changes the scope honestly. We build the rough-in and permit scope into the base bid, not as a “discovery” line item after you’re committed.
When walls open, the city inspector looks at what’s exposed. If we’ve already planned for grounded circuits, GFCI protection, and properly sized venting, the inspection is a formality, not a fight. If we didn’t plan for it, you’re paying for it anyway, plus the cost of the stop-work delay. We’d rather not put you through that.

Waterproofing and Shower Pan Rebuild
The original shower pans in 1950s-60s Montclair tract homes were rarely built with a proper waterproofing membrane. Most were a bed of mortar sloped toward a cast-iron drain, with tile set directly on top. That worked until the grout cracked, and then water found the wall cavity. A straight tile replacement on top of that old pan is how mold colonizes a Montclair bathroom.
We rebuild pans with a bonded sheet membrane or a PVC liner system that meets current code, and we tie the waterproofing up the walls and into the curb correctly. If the subfloor has rotted, we cut it back to sound structure and re-deck before the pan goes down. This is where our work stops looking like a remodel and starts looking like a repair with a finish on top, which is what these houses actually need.

Permit-Driven Wiring and Venting Upgrades
Once you pull a permit in Montclair, the inspector will look at what’s been uncovered. In a 1962 bathroom, that usually means ungrounded wiring feeding a receptacle within splash distance of the sink or shower, no GFCI anywhere, and a vent fan that either doesn’t exist or moves about as much air as a cracked window. Code requires grounded circuits, GFCI protection on every bathroom receptacle, and a vent that actually pulls moisture.
We price these upgrades in the initial quote with an allowance band, not a bolt-on after demolition. You’ll see the line item labeled clearly: “permit-driven electrical and ventilation upgrades, Montclair 1950s-60s tract stock.” If the wiring turns out cleaner than expected, the allowance comes back to you. If it’s worse, the band is written to cover it without drama.

Full Bathroom Gut and Rebuild
For homeowners who want the entire bathroom brought to modern standard, we handle the full sequence: demolition, rough-in, permit inspection, waterproofing, then finish work including tile, fixtures, vanity, lighting, and glass. Because we also do kitchen remodeling and ADU finishes, our tile and fixture crews are the same people we put into accessory dwelling units across Southern California. You get a crew that works to a punch list, not a crew that disappears after the tile is set.
In Montclair’s modest lot sizes, the bathroom footprint usually stays put. We’re not moving load-bearing walls unless you want us to, and we’ll tell you early if moving a wall triggers structural review. Most Montclair remodels keep the footprint and rebuild what’s inside it, which is faster, cheaper, and usually the right call for a 1,100-square-foot ranch.

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’re brand-agnostic when it comes to the materials we install, because the right choice for a Montclair bathroom depends on humidity, sun exposure, and how the original framing is built. For fixtures we regularly work with Kohler, Delta, and Moen. For waterproofing, Schluter and Laticrete systems are our defaults. For venting, Panasonic Whisper series fans are the quiet, code-compliant workhorse we keep on the truck. We stock common parts and rough-in components locally in the Inland Empire, which means shorter lead times for Montclair projects than ordering from a coastal warehouse.
This approach comes straight from our ADU work. We already specify James Hardie fiber cement for exterior cladding on units built by Cover, Dvele, and Mighty Buildings, so we know what holds up in hot, dry inland conditions. The same standard applies to a bathroom that gets baked by afternoon sun through a west-facing window.
Common Bathroom Remodeling Problems We See in Montclair Homes
- Ungrounded wiring and no GFCI. Original 1950s-60s circuits in Montclair tract homes were two-wire, and bathroom receptacles were often ungrounded. Code upgrades become mandatory the moment walls are open, and any honest quote includes them.
- Failed shower pan waterproofing. The original pans in these homes were rarely waterproofed to modern standards. Water migrates through grout, rots the subfloor, and feeds mold behind the tile. A straight tile swap just conceals the problem again.
- Undersized or missing exhaust venting. Many original Montclair bathrooms had a small window instead of a fan. In a Pomona Valley summer, the moisture from a hot shower has nowhere to go, so it sits in the wall cavity and attic. We fix the venting as part of the permit scope, not as an add-on.
- Galvanized supply lines at end of life. Zinc coating from 1960s galvanized pipe flakes and clogs over decades. When the wall is open, replacing the accessible runs with PEX or copper is cheaper than redoing the work later, and it eliminates the low-flow mystery in the shower.
Pricing for Bathroom Remodeling in Montclair, CA
A cosmetic refresh in a Montclair bathroom, meaning new tile, new vanity, new fixtures, and paint, runs $9,000 to $16,000. A full gut-and-rebuild that includes waterproofing, wiring, and venting upgrades starts at $14,000 and runs to $28,000 for a standard 5×8 hall bath. If you’re doing a primary suite bath with a larger footprint, custom tile, and a freestanding tub, the range is $30,000 to $45,000.
What moves the number in Montclair specifically is the condition of the original rough-in: wiring age, pan condition, and whether the existing vent actually exhausts to the exterior. A 1963 bathroom with original everything will land at the higher end of the range. A 1990s addition or a previously remodeled bath lands lower. We give a written line-item quote, not a lump sum that hides the upgrades. Call (855) 617-6356 for a free estimate, and we’ll walk the space with you, moisture meter and circuit tester in hand.
We Also Serve Cities Near Montclair
We work throughout the Pomona Valley and eastern Los Angeles County, including Claremont, Ontario, Upland, and La Verne. If you’re in one of those cities or in Montclair proper, the same inspection-first approach applies. Call (855) 617-6356 and we’ll tell you honestly whether the job is a simple remodel or a full mechanical and electrical revival.
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
The quote climbs because the original contract didn’t include allowances for what a 1950s-60s tract bathroom contains. Ungrounded wiring, failed shower pans, and missing venting are present in most Montclair homes built before 1970. A contractor who quotes only the cosmetic surface is quoting a job that will change. We write those allowances into our base contract, so the quote you sign is the range you pay. Call (855) 617-6356 for a quote that doesn’t lurch.
Yes, if your permit exposes it. Once a wall is open and the inspector sees ungrounded two-wire cable or a receptacle without GFCI protection, the city requires bringing the exposed portion to current code. This is not optional. We inspect the wiring before we quote, and we build the grounded circuit and GFCI upgrade into the original bid. It’s cheaper to do it while the wall is open than to patch, close, and reopen later. Call us at (855) 617-6356 for an exact quote.
Yes. In a typical Montclair tract home, the original shower pan has no waterproofing membrane under the tile. When you replace the tile or the receptor, the inspector will require the pan and wall waterproofing to meet current code. This means removing the old mortar bed, checking the subfloor for rot, and installing an approved liner or sheet membrane. We do this as standard on every shower and tub replacement. Call (855) 617-6356 to schedule a free waterproofing evaluation.
The biggest hidden cost is failed waterproofing under the original shower or tub. Once the old tile comes out, the subfloor often shows water damage, and the framing may have rot where water wicked into the wall. Repairing that correctly can add $1,500 to $4,000 depending on how far the damage has spread. In older Montclair homes, the second-biggest hidden cost is the electrical upgrade from ungrounded wiring to GFCI-protected grounded circuits. We price both with written allowances so these aren’t surprises. Call (855) 617-6356 to get a realistic number for your specific bathroom.
We stop work, document the damage with photos and moisture readings, and give you a written change order with a firm price before touching anything further. On a ranch-style home off Ramona Avenue in the 91763 core, our crew opened the hall bath expecting a simple tile-and-fixture swap and found the original 1960s wiring running ungrounded to a bathroom outlet within inches of the shower, plus a shower pan with no proper waterproofing membrane under the tile. We stopped, documented the wiring and moisture readings, priced the grounded circuit and pan rebuild in writing, and got signed approval before touching another tile. That’s how we handle every Montclair job. Call (855) 617-6356 to talk through your situation, and estimates are free.
Written by Neil Trescott, Owner at Holloway ADU Builders, serving Montclair and the Pomona Valley.