Bathroom Remodeling in Bloomington: What It Costs and How It Works
A full bathroom remodel in Bloomington typically runs $14,000 – $28,000 for a standard 5×8 hall bath, with primary-bathroom remodels landing between $28,000 and $55,000 depending on size, fixture grade, and what’s behind the walls. Because Bloomington sits in unincorporated San Bernardino County territory, permits flow through San Bernardino County Land Use Services rather than a city building department, and the county’s inspection schedule dictates your timeline. Most Bloomington remodels take 3 – 6 weeks once rough-in begins. Call (855) 949-1913 to schedule a free estimate and we’ll walk you through exactly what your project will cost.
Key Takeaways:
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Bloomington bathroom remodels cost ul4,000 – $55,000, with the final number driven heavily by what’s inside your walls.
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Homes built in the 1940s – 1970s here almost always have two-wire ungrounded wiring and framing quirks that a county permit forces you to address.
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Permits go through San Bernardino County Land Use Services, not a city hall.
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Sunstone handles the tear-out, the surprises, the permits, and the finish work under one contract.
Fast, Reliable Bathroom Remodeling Across Bloomington
Bloomington’s housing stock is predominantly post-war stucco ranch homes on generous flat lots. That’s good news for ADU work and garage conversions, but it also means most bathrooms we open were framed, wired, and waterproofed to 1950s or 1960s standards. If you live off Valley Boulevard, near Mary B. Lewis Elementary, or in the older county tracts around the 92316 zip code, you’ve probably noticed the signs: cracked tile at the pan, soft spots near the tub, a single ungrounded outlet above the vanity, and no exhaust fan to speak of. We know these homes because we work in them every week. Our team covers all of Bloomington, from the neighborhoods along Cedar Avenue to the tracts north of Jurupa Avenue, and we schedule estimates within days, not weeks. Call (855) 949-1913 and we’ll schedule a walkthrough at your home.
Why Sunstone ADU Builders Is Bloomington’s Preferred Bathroom Remodeling Company
We’re known around Bloomington for a specific reason: we don’t pretend a 1954 bathroom is the same as one built in 2004. Our Bathroom Remodeling team specializes in the exact conditions found in this unincorporated county corridor, and we’ve completed dozens of remodels here in the 92316 area. Homeowners along Valley Blvd and in the neighborhoods behind the old dairy land consistently mention the same thing in follow-up calls: the surprises were handled without drama, and the county inspections passed on schedule. That’s not luck. It’s because we write allowances for hidden wiring and framing into every Bloomington contract before we start, so the rough-in surprises don’t become billing surprises.
Nate Holloway, who leads Sunstone ADU Builders, started the company with a specific focus: ADU and interior finish work that holds up to the Inland Empire’s hot summers and the scrutiny of unincorporated county plan review. That focus carries directly into our Bloomington bathroom work. Title 24 ventilation, GFCI-protected circuits, pre-sloped shower pans, moisture-resistant backer board, and county inspection-ready rough-in: those aren’t extras here, they’re the baseline. We know the San Bernardino County Land Use Services process well enough to sequence rough-in inspections so you’re not stalled waiting on a sign-off that could have been scheduled days earlier.
Our Bathroom Remodeling Services in Bloomington
Inspection-First Tear-Out with Written Allowances
Every Bloomington bathroom remodel starts with a controlled tear-out and a written scope-of-work. We don’t quote blind, and we don’t guess. For a 1950s stucco ranch near Valley Blvd, we typically write in a $2,500 – $6,000 allowance for hidden electrical, framing, and subfloor work. If we open the walls and find two-wire ungrounded cloth wiring, a notched joist, or a rotted sill plate, it’s covered by the allowance and documented before we proceed. You approve every line item in writing.
Permitted Rough-In and Title 24 Ventilation
Because Bloomington is unincorporated county territory, your bathroom permit routes through San Bernardino County Land Use Services. That means GFCI protection on all receptacles near water, proper exhaust ventilation to the exterior (not into the attic), and framing that meets current code. We handle the permit application, the county inspections, and the correction list. You handle picking tile and fixtures. If you’re adding a fan to a windowless bathroom, we’ll calculate the CFM requirement and install a unit that actually clears moisture, which matters in a climate where summer humidity plus 100°F heat turns an under-vented bath into a mold factory.
Waterproofing and Shower-Pan Rebuild
Failed pans are the most common hidden defect in older Bloomington homes. Many were built with hot-mopped pans without a pre-slope, or tiled directly over a mud bed with no membrane at all. We rebuild pans from the subfloor up: pre-slope, PVC or Schluter Kerdi membrane, flood test, then tile. If your shower has a persistent leak that shows up as staining on the ceiling below or peeling baseboard outside the curb, this is almost certainly the cause, and it won’t fix itself. We also do full tub-to-shower conversions, which are popular in these ranch homes where the original pink tub has been there since Eisenhower was in office.
Garage Conversion and ADU Bathrooms
Because Bloomington’s lots along Valley Blvd and the older county tracts are often half an acre or more, many homeowners here are adding a detached ADU or converting an attached garage. When you do that, the new bathroom needs its own permit, and it often makes sense to pull it alongside your main house remodel so rough-in inspections happen in one sequence. We build rental-ready bathrooms for ADUs: durable finishes, easy-to-clean surfaces, and ventilation that won’t generate tenant complaints. Sunstone is an ADU specialist first, which means we understand how a bathroom in a converted garage on a 1962 slab interacts with the rest of the structure.
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
We specify materials that hold up to Bloomington’s hot, dry summers and the occasional cold snap that catches Inland Empire homes off guard. On our Bloomington jobs, we commonly install James Hardie fiber cement products for exterior-adjacent wet areas and ADU cladding, and we’re authorized to build and install prefab structures from Abodu, Cover, and Dvele when your bathroom work is part of a larger ADU project. We stock standard rough-in components locally in the 92316 corridor through our suppliers, which keeps lead times short on the items Bloomington remodels actually need: GFCI outlets, exhaust fans rated for high-heat attics, and moisture-resistant backer board. If you’re planning an ADU with a bathroom inside, we can quote the interior finish work under the same contract as the structure itself.
Common Bathroom Remodeling Problems We See in Bloomington Homes
- Two-wire ungrounded wiring: Most Bloomington homes built before 1980 still have original two-wire branch circuits in the bathroom. A permitted remodel triggers the requirement for GFCI protection and often a new 20-amp circuit from the panel, which is exactly the kind of item a lowball quote “forgets.”
- Notched and water-softened floor joists: To run a 2-inch drain through a 2×8 joist, original builders sometimes notched past the allowed depth. Forty years of a slow pan leak on top of that notch and you’ve got a joist that needs sistering before any tile goes down.
- Shower pans with no pre-slope: The liner under the tile was installed flat on the subfloor, which means water collects and wicks outward. By the time you see the stain on the ceiling below, the framing’s been wet for months. We find this on roughly half the 1940s – 1960s bathrooms we open in Bloomington.
- No ventilation, or a fan venting into the attic: A surprising number of original Bloomington ranches have a fan that just dumps moisture into the attic chase. In a climate with summer highs over 100°F, that moisture cooks the roof sheathing from below. A permitted remodel fixes this with a properly routed exterior vent.
Pricing for Bathroom Remodeling in Bloomington, CA
Here’s what we see in the 92316 market right now. A standard hall bath (5×8, tub-shower combo, mid-grade tile, new vanity, new toilet, new light fixture, new exhaust fan, county permit) runs $14,000 – $22,000. A primary bathroom with a larger footprint, walk-in shower with glass, double vanity, and higher-end fixtures lands at $28,000 – $55,000. A tub-to-shower conversion with full pan rebuild and waterproofing typically runs $8,000 – $14,000. Hidden-work allowances for electrical and framing add $2,500 – $6,000 on older Bloomington homes, and the county permit and plan review fees typically add $800 – $2,200 depending on scope. Every Bloomington quote we write is line-item: you see the allowance, the permit line, the labor, and the materials separately before you sign. Call (855) 949-1913 and we’ll put a hard number in front of you, not a range.
One Bloomington-Specific Reality: The Unincorporated County Permit Path
Here’s something you won’t find on a generic remodeling website. Because Bloomington is unincorporated San Bernardino County territory, your bathroom remodel permit does not go through a city building department. It goes through San Bernardino County Land Use Services. That might sound like a paperwork detail, but it changes the entire project. County plan review is thorough on electrical and ventilation – they enforce Title 24 on standalone structures in ways some neighboring cities don’t – and the rough-in inspection schedule follows the county’s calendar, not Fontana’s or Rialto’s. On a 1954 stucco ranch off Valley Blvd, our crew opened a hall bathroom to find two-wire ungrounded cloth wiring, a floor joist notched past the allowed depth to pass a drain, and a shower pan with no pre-slope under the tile. We stopped, documented everything with photos, and priced the joist sistering, the GFCI circuit run, and a new sloped pan as a written change order the homeowner approved before we picked a tool back up. The county rough-in inspections passed on the first visit, and the finished bath hit Title 24 ventilation without the main house carrying the load. That’s the Bloomington remodel reality: opening an old county home means opening what the county will make you fix, and we plan for it from day one.
We Also Serve Cities Near Bloomington
While this page focuses on Bloomington, our crews are working every week in Fontana, Rialto, Glen Avon, and Pedley. If you’re just outside the 92316 boundary or right on the edge of the county line, call us and we’ll confirm coverage. We’re based in Aliso Viejo but schedule Bloomington and the surrounding Inland Empire corridor daily, and we group inspections across nearby cities to keep county visit scheduling efficient.
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
Because Bloomington is unincorporated county territory, not an incorporated city, your building permits are issued and inspected by San Bernardino County Land Use Services rather than a city building department. The practical effect: plan review follows county standards for electrical, ventilation, and waterproofing, and the rough-in inspection schedule runs on the county’s calendar. We handle the permit application and sequencing so you don’t have to navigate that process yourself. Call (855) 949-1913 and we’ll explain exactly what your specific project triggers.
In a home built during Bloomington’s post-war tract boom, you can expect two-wire ungrounded cloth wiring, a shower pan with no pre-slope, and floor joists that may have been notched to pass drain lines. Some also have exhaust fans venting directly into the attic. That’s why our Bloomington quotes include written allowances for hidden electrical and framing work: we know what’s in these walls before we open them because we’ve opened dozens of them. The numbers don’t surprise us, and they won’t surprise you either.
We stop work, document the issue with photos, and present you with a written change order with a firm price before we proceed. No verbal “we’ll figure it out later” and no unexpected line items at the end. The allowance we write into every Bloomington contract covers the most common hidden conditions, so most surprises are already pre-approved in writing. If something falls outside the allowance, you see it in writing and approve it before a tool moves.
Yes. Any permitted bathroom remodel in unincorporated San Bernardino County must meet California Title 24 requirements, which include mechanical exhaust ventilation that vents to the exterior, not into the attic or a soffit cavity. For windowless bathrooms, the CFM requirement is calculated based on the room’s floor area. We size and install fans that clear humidity fast, which matters in Bloomington summers when attic temperatures sit above 120°F.
Yes, and in Bloomington it’s often the smartest way to do it. Because many lots here have attached garages with rear alley access, converting that garage into an ADU while remodeling the main bathroom lets both permits run through San Bernardino County Land Use Services in a single rough-in sequence. Sunstone ADU Builders handles both scopes under one contract, so you’re not coordinating two contractors and two different permit paths. For a detached ADU with its own bathroom and a kitchen finish, we can quote that as a full project.
Ready to price your Bloomington bathroom remodel? Call (855) 949-1913 and we’ll schedule a free estimate at your home, walk the existing conditions with you, and deliver a line-item quote that accounts for what’s actually inside your walls. Estimates are free, the advice is specific, and you’ll get a hard number, not a vague range.
Written by Nate Holloway, Owner at Sunstone ADU Builders, serving Bloomington and the unincorporated San Bernardino County corridor.