Fast, Reliable Bathroom Remodeling Across Upland
Bathroom remodeling in Upland typically runs $18,000 – $38,000 for a full gut-and-replace on a mid-century home, and the biggest variable isn’t tile choice. It’s what’s hiding behind the walls. In 91786 especially, opening a 1950s-era bath routinely exposes galvanized supply lines corroded nearly shut, cast-iron drains on their last legs, and framing softened by decades of failed waterproofing. That’s why we approach every Upland remodel inspection-first, with written allowances built into the contract before the hammer comes out. If you’re planning a bathroom remodel in Upland, call (855) 949-1913 for a free estimate and a walkthrough that tells you what your house will actually need.
Why Sunstone ADU Builders Is Upland’s Preferred Bathroom Remodeling Company
We’re known in Upland for ADU construction, but our bathroom remodeling work grew out of the same job sites. When we build a detached ADU in 91784 or convert a garage off the Euclid corridor in 91786, the interior finish work, including the bathroom, is done by our own crew under the same contract. That focus carries over to standalone bathroom remodels on Upland’s primary residences. Our Bathroom Remodeling team has walked through enough mid-century tract homes in this city to know what a 1962 hall bath is going to reveal before we open it. Nate Holloway, who leads Sunstone ADU Builders, set the inspection-first rule after watching too many Upland homeowners get burned by change orders that should have been anticipated. The credibility comes from showing up and knowing what to check.
Upland customers come to us because we’ve earned a reputation for pricing surprises before they happen, not after. We document what we find, put the repair scope in writing, and get your signature before we spend a dollar of your money. For a city with this much aging plumbing and electrical, that’s the difference between a remodel that stays on budget and one that spirals.
Our Bathroom Remodeling Services in Upland
Full Bathroom Remodel with Inspection-First Opening
A full bathroom remodel in Upland starts with a controlled demo, not a sledgehammer free-for-all. We open the walls and floor at the studs and slab, then inspect supply lines, drain pipe condition, framing integrity, and wiring. In 91786 tract homes, this almost always turns up something that needs attention before tile goes back. We document it, price it, and you approve it in writing before we proceed. That’s the whole system.

Waterproofing and Shower Pan Replacement
Older Upland showers, especially those original to 1940s – 1970s homes, were often built with hot-mop pans or thin vinyl liners that failed years ago. The water doesn’t disappear. It sits in the framing. When we replace a shower pan in Upland’s mid-century stock, we strip to the studs and deck, sister any softened joists, and rebuild with a Schluter-style bonded waterproofing system. Tile over a failed pan is just decorating a problem.

Partial Repipe During Remodel
Galvanized supply lines in 91786 slab foundations and shallow walls don’t survive being disturbed. Once we open a wall and touch a corroded stub, pressure testing often fails, and the right fix is a partial repipe, not a patch. We write a repipe allowance into every Upland bathroom contract that’s likely to need one based on home age and ZIP. That way it’s a line item you’ve seen, not a surprise phone call mid-demo.

Electrical Upgrade During Bathroom Remodel
Opening a pre-1980s Upland bath routinely exposes ungrounded branch wiring and circuits shared with outlets that should never feed a bathroom. Once the walls are open and the work is permitted, Upland inspectors will require GFCI protection and a dedicated 20-amp bath circuit. We include this electrical scope in our quotes for 91786 homes because we know the permit will trigger it. For 91784 foothill homes with newer construction, this is usually not a factor, and we don’t pad the quote just because it’s common elsewhere in the city.

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 Upland
For Upland homeowners considering an ADU alongside a bathroom remodel, we’re an authorized builder and installer for Abodu, Cover, and Mighty Buildings prefab units. That matters when the bathroom work is part of a larger project. On a recent Bathroom Remodeling in Upland job, we remodeled the primary bath while scoping a rear-yard ADU, and the same crew handled both. For bathroom fixtures and finishes, we work with the standard manufacturer catalogs and specify what holds up in Upland’s hard water and dry heat. We don’t push designer brands that don’t perform; we spec what survives.
Common Bathroom Remodeling Problems We See in Upland Homes
- Failed shower pan waterproofing. The original pan in a 1950s – 1970s Upland bath has almost certainly failed by now. By the time you see cracked grout or a soft spot in the floor, the framing underneath has been wet for years. In 91786 homes with slab foundations, the damage often travels into the sill plate and adjacent wall framing, and the only real fix is full tear-out to the studs.
- Corroded galvanized supply lines. Homes built before the mid-1970s in central and southern Upland ran galvanized steel supply lines. They rust from the inside out. When we disturb one during a remodel, the corrosion often flakes off and clogs fixtures, and the line won’t hold pressure. A partial repipe becomes mandatory mid-project, which is why we quote for it upfront.
- Undersized or ungrounded electrical. A 1960s hall bath in 91786 often shares a single 15-amp circuit with the bedrooms and has no GFCI anywhere. Upland’s permit process requires bringing that wiring up to current code once the walls are open. A dedicated bath circuit and GFCI protection are not optional upgrades; they’re code triggers.
- Tub-wall framing damage from years of moisture. Mid-century Upland baths used green board or plain drywall behind tile, not waterproof membrane. Years of shower steam and splash rot the studs at the tub wall. We’ve sistered framing in more Upland bathrooms than we can count, especially in homes where the original tile was still in place, hiding the failure until demo.
Pricing for Bathroom Remodeling in Upland, CA
Here’s what bathrooms actually cost in Upland right now. A cosmetic refresh, new vanity, fixtures, paint, and reglazing a tub, runs $6,000 – $12,000. A full gut remodel of a hall bath or guest bath in 91786, including waterproofing, tile, new tub or shower, vanity, and the typical partial repipe and electrical upgrade, lands between $18,000 and $30,000. Primary baths with larger footprints and higher-end finishes run $28,000 – $42,000. 91784 foothill homes often come in on the lower end of those ranges because the plumbing and wiring are newer. The cost drivers in Upland are home age, slab access for drain lines, and whether the permit triggers repipe or electrical scope. We price all of that in writing before work starts. Call (855) 949-1913 for a free estimate, and we’ll walk your specific bathroom and ZIP before we quote a number.
We Also Serve Cities Near Upland
Sunstone ADU Builders works throughout the Inland Empire foothills and valley. In addition to Upland, we serve San Antonio Heights, Claremont, Montclair, and Rancho Cucamonga for both bathroom remodeling and ADU construction. If you’re across a city line but your house has the same mid-century bones as a 91786 tract home, the inspection-first approach applies there too.
Serving Upland, CA — Our Local Coverage Area
We’re based in the Upland 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 Upland
Because a 1950s-era bathroom in Upland’s central and southern ZIP codes almost always hides galvanized supply lines, cast-iron drains, and ungrounded wiring that a permit forces into scope once the walls are open. We handle this with written allowances in the contract, so the final price moves only because you’ve approved a specific, documented repair at a specific price. Call (855) 949-1913 for a written estimate with allowances built in, not bolted on later.
Yes, in most cases. If Upland’s building department sees ungrounded wiring or non-code plumbing during a permitted remodel, they will require GFCI protection, a dedicated bath circuit, and repair or replacement of failing supply and drain lines before final inspection. We anticipate this scope based on home age and ZIP and price it into the initial contract so the permit doesn’t become the bad guy.
We stop work, document the rotten framing and the failed pan, price the repair, sistered joists or studs plus a new waterproofed pan, and get your written approval before anything gets rebuilt. Then we install a bonded waterproofing system and tile over it. You’ll never see us tile over wet or rotted framing just to keep the schedule. Call (855) 949-1913 and ask us to look behind your tile, not around it.
Yes, and this is exactly where Sunstone’s specialization helps. We handle the ADU structure and the bathroom interior under one contract, one crew, one permit package. On a 1960s home off the Euclid corridor where a detached garage sits on a narrow side setback, our team flagged the setback variance that would matter for a future conversion during a bathroom remodel. The bathroom work didn’t change; the owner just knew the constraint before committing to the ADU. Ask us to walk the whole lot, not just the bathroom.
In 91784, homes are generally newer or custom-built with copper supply lines, modern drains, and code-compliant electrical, so a bathroom remodel there is closer to a straightforward cosmetic-plus-fixture job. The framing and waterproofing are usually intact. Costs run lower for the same square footage, and permit-triggered repipe or electrical upgrades are far less common. We don’t quote 91784 work with 91786 worst-case assumptions baked in.
Written by Nate Holloway, Owner at Sunstone ADU Builders, serving Upland and the surrounding Inland Empire with inspection-first bathroom remodeling and ADU construction.