Fast, Reliable Bathroom Remodeling Across Bloomington
Bathroom remodeling in Bloomington runs $14,000 – $38,000 for a full gut-and-replace, with ADU bathroom rough-in and finish work typically landing between $9,000 and $22,000 depending on fixture level and whether the panel and vent stack need upgrading. We work throughout the 92316 corridor, from the older ranch homes near Locust Avenue down to the larger-lot parcels south of Jurupa. If you’re weighing a bathroom remodel against an ADU addition, or folding both into one project, call (833) 589-8273 and we’ll give you a written line-item quote before any work starts.
Why Costa Mesa ADU Builders Is Bloomington’s Preferred Bathroom Remodeling Company
Bloomington is a different permit environment than Fontana or Rialto. This community is unincorporated San Bernardino County, which means a bathroom inside an ADU goes through County Land Use Services, not a city counter. That single fact changes what gets approved, what gets flagged, and what a contractor has to get right on the rough-in before the drywall ever goes up. We’ve walked Bloomington homeowners through enough county plan checks to know exactly where the reviewers focus: vent stack sizing, GFCI placement, panel capacity on older ranch homes, and moisture detailing on exterior bathroom walls.
Our Bathroom Remodeling team also handles full interior finish work, which matters in Bloomington because so many of these postwar stucco homes need electrical upgrades before a bathroom can pass inspection. Nate Calloway runs our projects, and he keeps the same crew from demolition through final walkthrough. That consistency means the person who opened the wall is the same person who knows why the county reviewer flagged the vent stack. For Bloomington homeowners, that’s the difference between a project that gets permitted and one that stalls for weeks.
Our Bathroom Remodeling Services in Bloomington
Full ADU Bathroom Rough-In and Finish
When an ADU goes up on one of Bloomington’s oversized lots, the bathroom is the part of the project county plan-check scrutinizes hardest. We handle the full rough-in: drain and vent sizing, supply line replacement, GFCI circuit placement, and shower valve depth. Then we finish it with tile, glass, and fixtures that hold up to Inland Empire heat. If the existing 100-amp panel on your ranch home won’t carry the new load, we address that before the walls close, not after the county inspector is standing in the room.
Moisture-Rated Shower and Tub Surrounds
Bloomington’s summer humidity swings and Santa Ana wind events push moisture into bathroom walls differently than coastal builds. Standard paper-faced drywall behind a shower surround wicks and fails here. We specify cement board or glass-mat drywall, seal every penetration, and use stainless or hot-dipped fasteners on all exterior-rated trim. The material cost is higher by a few hundred dollars. The repair cost if you skip it is thousands within a decade.
Exterior-Rated Vanity and Hardware Package
A bathroom vanity against an exterior stucco wall in Bloomington has more working against it than the same vanity in an interior powder room. Wind-driven moisture at the wall penetration, heat cycling, and humidity swings rust standard steel hinges and pit mild-steel screws. We specify stainless hinges, hot-dipped fasteners, and sealed vanity backs on any bathroom wall that shares the building envelope. It’s a small line item that prevents a visible failure.
Walk-In Shower Conversions and Aging-in-Place
Many Bloomington homeowners are planning for a parent or grandparent moving into the primary home or a new ADU. Curbless showers, grab bar blocking, and wider door rough-ins are standard asks on these 92316 properties. We frame the walls for that from day one, because retrofitting blocking after tile is set costs more than doing it right on the rough-in.
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 Bloomington
For Bloomington ADU bathrooms, we’ve ordered and installed prefab wall and vanity systems from Boxabl and Dvele, and we keep a preferred spec list with local suppliers for Plant Prefab interior packages. What that means for you: the recommendation is based on your lot, your wall assembly, and your budget, not on whatever brand we happen to stock. When a Dvele module’s bathroom rough-in arrives, we know what the county reviewer will flag before they flag it, and we have that addressed on the front end.
Common Bathroom Remodeling Problems We See in Bloomington Homes
- Galvanized supply lines on 1960s ranch homes: Bloomington’s postwar housing stock is full of galvanized pipe that’s rusting from the inside. By the time a bathroom remodel opens the wall, that pipe is often down to a pencil-width opening. We replace it with PEX or copper, and the county reviewer expects to see it done.
- Undersized panels on older stucco homes: A 100-amp panel from the 1960s won’t carry a new bathroom circuit, a heated floor, and an ADU’s load simultaneously. We see this on nearly every full remodel in 92316. The panel upgrade goes into the quote, not a surprise change order.
- Vent stacks that were never sized to current code: County plan-check in Bloomington regularly kicks back bathroom remodels inside ADUs when the original vent stack is undersized. The older homes along Locust Avenue and the surrounding streets framed bathrooms with 1.5-inch vents that don’t meet San Bernardino County’s current requirement.
- Wind-driven moisture behind shower walls: During Santa Ana events, unsealed penetrations in exterior bathroom walls wick moisture into the cavity. We find mold on paper-faced drywall and rusted nail heads behind shower surrounds more often in Bloomington than in Fontana or Rialto, because the lot orientation here exposes more wall surface to the wind path.
Pricing for Bathroom Remodeling in Bloomington, CA
A full bathroom gut and remodel in Bloomington runs $14,000 – $38,000. The spread comes down to fixture level, whether the existing panel and vent stack can stay, and whether you’re doing a moisture-rated wall assembly or a standard one. Here’s how it breaks down:
- ADU bathroom rough-in and finish: $9,000 – $22,000
- Shower or tub surround replacement (moisture-rated): $3,500 – $7,500
- Exterior-rated vanity and hardware package: $900 – $2,800
- Panel upgrade from 100A to 200A (if needed): $2,500 – $4,500
- Galvanized supply line replacement: $800 – $2,200 depending on run length
The coastal-spec version of this job, using standard fasteners and paper-faced drywall, might quote $1,500 – $2,500 less on paper. In Bloomington’s wind and heat, that cheap spec fails early: rusted hinges, mildewed drywall, a county mismatch on the vent stack. We quote the version that won’t need rework. Call (833) 589-8273 for a free, written estimate.
We Also Serve Cities Near Bloomington
Our Bloomington coverage extends to the surrounding communities where we see the same oversized lots and postwar housing stock. We’re in Fontana, Rialto, Glen Avon, and Pedley regularly, and while the permit path differs (Fontana and Rialto run their own city counters, unlike Bloomington’s county process), the field conditions are familiar.
Serving Bloomington, CA — Our Local Coverage Area
We’re based in the Bloomington 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 Bloomington
It goes through San Bernardino County Land Use Services, because Bloomington is unincorporated county land, not a city. That means your contractor submits to the county plan-check, and the county reviewer applies county setback, vent, and electrical standards, not city ones. A crew used to pulling permits in Fontana will hit the same wall every Bloomington homeowner hits. Call (833) 589-8273 and we’ll walk you through the specific county requirements for your ADU bathroom.
Because anything against an exterior wall in Bloomington takes wind-driven moisture and heat cycling during Santa Ana events, and standard steel fasteners pit and rust in that environment. We specify stainless or hot-dip hardware on vanity hinges, shower trim, and anything mounted to an exterior-rated wall. The upgrade costs a few hundred dollars and prevents visible rust within five years. For an exact quote on your bathroom, call (833) 589-8273.
The county reviewer at San Bernardino County Land Use Services most often flags undersized vent stacks, GFCI placement that doesn’t meet current code, and panel capacity on the older ranch homes that dominate 92316. If those aren’t addressed on the rough-in, the inspection fails and the project stalls. We address all three on the front end. Call us to schedule a free estimate, and we’ll tell you which of these your ADU likely has.
Because the paper-faced drywall and standard steel fasteners that a low bid uses will wick moisture during Bloomington’s wind-driven rain events and rust over the hot, dry summers. You’ll replace the shower surround, the vanity hardware, and likely part of the wall cavity. The moisture-rated assembly we spec costs about $1,500 – $2,500 more on the front end. The repair bill in seven to ten years is nearly always higher than that. Call (833) 589-8273 for a quote that accounts for Bloomington’s actual conditions.
Yes, in two ways. The larger lots mean detached ADUs are more common, which means the bathroom is on the building’s exterior wall more often, with more exposure to wind and heat. And the older utility runs from the street to the structure are longer, so replacing galvanized supply lines costs more than it does on a compact city lot in Rialto. We factor the run length into the free estimate. Call (833) 589-8273 and we’ll come out to your Bloomington property, measure the actual runs, and give you a number that matches the lot you have.
Call for Your Free Bloomington Bathroom Remodeling Estimate
Whether you’re remodeling a bathroom in your existing Bloomington home or roughing one into a new ADU on an oversized 92316 lot, we’ll give you a written line-item quote that accounts for county permit requirements, your existing panel and vent stack, and the moisture and heat conditions that decide whether the job lasts. Call (833) 589-8273 to schedule your free estimate. No pressure, just a real number from a contractor who works in Bloomington regularly.
Written by Nate Calloway, Owner at Costa Mesa ADU Builders, serving Bloomington and the surrounding Inland Empire communities.