Fast, Reliable Bathroom Remodeling Across Montclair
Bathroom remodeling in Montclair typically runs $14,000 to $32,000 for a full gut-and-replace, depending on whether you’re updating a hall bath in a 1960s ranch near Montclair Plaza or tackling a primary suite with structural changes. Most projects in the 91763 zip code take three to five weeks once permits clear. If you’re planning a remodel, call us at (855) 949-1913 for a free estimate. We know Montclair’s housing stock well – mid-century tract homes with original plumbing, tight bathroom footprints, and electrical panels that were never sized for modern fixtures.
Why Sunstone ADU Builders Is Montclair’s Preferred Bathroom Remodeling Company
We’re not a general contractor juggling kitchen, roofing, and patio jobs. Our Bathroom Remodeling team works on ADU interiors and companion remodels on primary residences every day, and we’ve done enough projects in Montclair to know what the city’s building department will flag before we even submit drawings. That familiarity matters when you’re dealing with a 1950s tract home where the original bathroom is 35 square feet and the panel is maxed out.
Montclair homeowners tell us the same thing: they want a builder who understands that a bathroom remodel here often starts with an electrical service upgrade, not a tile selection. We bring that expectation to every estimate. You’ll get a written line-item quote, not a vague range, and we pull permits on every job that requires one. Nate Holloway, our owner, reviews every Montclair scope personally before we start, so there’s a name behind the work, not a rotating crew.
We also understand the HOA and architectural review landscape in Montclair’s newer developments. Some neighborhoods require approval for exterior vent changes or window alterations, and we’ve walked enough residents through that process to keep your project moving without stop-work surprises.
Our Bathroom Remodeling Services in Montclair
Vanity and Fixture Replacement
Builder-grade vanities in Montclair’s mid-century homes are usually compressed particleboard with a single-bowl top and a strip light that hums. Replacing them with semi-custom vanities, quartz or solid-surface tops, and properly spaced sconces changes the room without moving plumbing. We also handle faucet and shower trim upgrades, and we’ll tell you honestly if the existing shutoff valves need replacement while we’re in there – most original angle stops in 1960s Montclair homes are corroded and will fail when disturbed.
Electrical Service Upgrade for Bathroom Circuits
Most original Montclair bathrooms share a circuit with the hallway lights or the garage. Current code requires a dedicated 20-amp GFCI circuit for bathroom receptacles, and if your panel is the original 100-amp unit, there’s usually no room. We include panel load calculations in every Montclair estimate, and when a service upgrade to 200 amps is needed, we coordinate the panel swap with the city’s building department so your inspection passes the first time.
Waterproofing and Tile Installation
Montclair’s dry climate doesn’t mean waterproofing is optional. We use full waterproof membrane systems behind tile in wet areas, not just cement board with a coat of redguard. For shower surrounds, we install either large-format porcelain or a full tile layout with proper slope and drain placement. If your existing fiberglass surround has been there since the home was built, we’ll check what’s behind it before promising a simple swap – many Montclair homes we open up have drywall behind the surround, which means a tear-out to the studs and new backer board before tile goes up.
Full Bathroom Remodels
A full remodel in Montclair usually means gutting to the studs, updating plumbing and electrical, and rebuilding with modern fixtures and finishes. We handle the demolition, the rough-in, and every finish detail – trim, paint, glass, and hardware. If you’re also planning an ADU, our team can sequence the work so your primary bathroom and the ADU’s bathroom share one contract and one schedule. No coordinating a second contractor after the shell is up.
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 specify materials that hold up in the Pomona Valley’s hot, dry summers and Santa Ana wind conditions. For exterior-adjacent work like vent changes or window swaps, we recommend James Hardie fiber cement siding and trim, which stands up to Montclair’s summer heat without warping and carries strong fire-resistance ratings near the city’s wildland-urban edge. We also work with ADU prefab brands like Abodu and Cover when your bathroom remodel is part of a larger ADU project, and we keep common finish materials in stock locally so Montclair jobs don’t stall waiting on a supply house in Ontario.
Common Bathroom Remodeling Problems We See in Montclair Homes
- Maxed-out electrical panels: Original 100-amp panels in Montclair’s 1950s-1970s homes often have no open slots for a required bathroom circuit. We calculate the load before we start, so you know if a panel upgrade is part of the scope.
- HOA-triggered stop-work orders: In Montclair’s newer developments, changing a bathroom exhaust vent location or a window size can require architectural committee approval. We submit those plans early, not after a neighbor flags the work.
- Failed waterproofing behind original fiberglass surrounds: Many Montclair homes built in the 1960s and 1970s have drywall behind tub surrounds, not cement board. When we tear out the old surround, we often find water damage that was invisible from the outside.
- Builder-grade fixtures that fail under daily use: The plastic drain assemblies and low-flow valves installed in newer Montclair tract homes are designed for minimum cost, not longevity. We replace them with solid brass or stainless components that hold up to hard water from the local supply.
Pricing for Bathroom Remodeling in Montclair, CA
A straightforward vanity and fixture replacement in Montclair runs $4,500 to $9,000. A tub-to-shower conversion with full waterproofing and tile lands between $12,000 and $18,000. A full bathroom gut-and-replace, including moving the plumbing if you’re reconfiguring the layout, typically runs $20,000 to $32,000. Electrical panel upgrades, when needed, add $2,500 to $5,000 depending on the service size and whether the city requires a meter relocation.
What affects cost:
- Whether your Montclair home needs a 200-amp service upgrade to support a dedicated bathroom circuit
- HOA architectural review fees and timeline, which vary by development
- Whether we find water damage behind the original surround once demolition starts
- Your fixture selections – a semi-custom vanity and quartz top cost more than a stock unit, but they last decades
Every Montclair estimate is a written line-item quote, not a verbal ballpark. Call (855) 949-1913 and we’ll walk your bathroom with you, check the panel, and give you numbers you can plan around. Free estimates, no pressure.
We Also Serve Cities Near Montclair
Sunstone ADU Builders works on bathroom remodels across the Pomona Valley. In addition to Montclair, we serve Claremont, Ontario, Upland, and La Verne. If you’re just over the city line, the same crew, the same warranty, and the same local building-department knowledge apply. Call (855) 949-1913 to schedule a walkthrough.
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, if you’re moving plumbing, adding or relocating electrical circuits, changing the floor plan, or doing structural work. A simple fixture replacement like swapping a vanity or faucet generally doesn’t require a permit, but adding a dedicated bathroom circuit does. We pull permits for every Montclair job that requires one, and we handle the city inspection from scheduling to sign-off. Call (855) 949-1913 if you’re not sure whether your project needs a permit – we’ll tell you straight.
It can, if you alter covered systems incorrectly. Most builder warranties cover workmanship for one to two years and major systems like plumbing and electrical for longer, but they exclude damage caused by unauthorized modifications. The key is to keep the builder’s warranty intact by using a licensed contractor who pulls permits and works to current code, and by getting written approval from the builder or warranty company for electrical panel changes. We documented a panel upgrade on a newer Montclair home recently and confirmed with the homeowner’s warranty provider before we started, so the remaining warranty stayed valid. Call (855) 949-1913 and we’ll help you check your warranty language before you commit.
In Montclair’s newer tract homes and mid-century ranch homes alike, the first upgrades we see are replacing the single-bowl vanity with a double-sink or larger single, swapping the builder-grade strip light for sconces or a vanity light with proper lumens, replacing the plastic tub surround with tile, and upgrading the exhaust fan from a noisy 50-CFM unit to a quiet 110-CFM model that actually clears moisture. Most Montclair homeowners also add a dedicated GFCI circuit at the same time, which we strongly recommend. For exact pricing on your scope, call (855) 949-1913.
If your panel is 100 amps or less and has no open breaker slots, you’ll likely need a service upgrade to add the required dedicated 20-amp bathroom circuit. We do a load calculation on every Montclair estimate. The original panels in most Montclair homes from the 1950s-1970s are Zinsco, Federal Pacific, or early Square D units, and some of those brands are known fire hazards that should be replaced regardless. If your panel is already 200 amps with open slots, you’re in the clear. Send us a photo of your panel or call (855) 949-1913 and we’ll give you a straight answer.
It depends on your development and what you’re changing. Interior-only remodels that don’t touch exterior walls, windows, or vent locations typically don’t need HOA approval. But if you’re adding a bathroom exhaust vent that penetrates an exterior wall, changing a window size, or doing anything visible from the street, many Montclair HOAs require architectural review first. We handle that paperwork for you. Call (855) 949-1913 and tell us your development – we’ll know the process.
Written by Nate Holloway, Owner at Sunstone ADU Builders, serving Montclair and the Pomona Valley.