Fast, Reliable Bathroom Remodeling Across Riverside
A full bathroom remodel in Riverside typically runs $18,000 to $38,000 for a standard 5×8 hall bath, while larger master baths with custom tile work land between $35,000 and $65,000. Most projects we take on in Riverside wrap up in 3 to 6 weeks once demolition starts. If you’re researching costs and timelines right now, call (866) 808-7312 and we’ll give you a straight answer based on your home’s age and what’s behind your walls.
We’re Cottage ADU Builders, and we’ve worked inside enough Riverside tract homes to know that the tile you pick is rarely the expensive part. It’s what the walls reveal once we open them. That’s the conversation we want to have with you before demolition, not after the invoice shows up.
Why Cottage ADU Builders Is Riverside’s Preferred Bathroom Remodeling Company
We work almost exclusively in Riverside’s older neighborhoods, from the 1950s ranches along Magnolia Avenue and Brockton Avenue to the mid-century tracts near Arlington Park and the foothill streets below Box Springs Mountain. That familiarity means we walk into your bathroom already knowing what to expect: original galvanized supply lines, lead pan showers, and panels that were sized for a house with two circuits, not a modern bathroom with GFCI outlets, a vent fan, and heated floors.
Our team is led by Neil Stratton, who has spent years working through the specific plumbing and electrical issues that Riverside’s 1950s through 1980s housing stock throws at a remodel. His approach is inspection-first. Before we give you a hard number, we look at what’s actually behind the tile and under the floor, so the contract we write reflects the house you own, not an idealized version of it. Homeowners across Riverside 92506, 92504, and 92501 have told us that’s the reason they chose us over a bid that came in lower but fell apart at demolition.
We also handle Bathroom Remodeling as a core trade, not a side project. Our crew does bathroom remodels, kitchen remodels, and ADUs, which means the plumbing and electrical knowledge crosses over. When we trace a supply line issue in your bath, we’re not guessing. We see those same galvanized pipes in every Riverside ranch we open.
Our Bathroom Remodeling Services in Riverside
Full Bathroom Remodels with Inspection-First Allowances
The way we approach a full bath remodel in Riverside is to inspect first, then quote. That means before you sign anything, we’ve already opened or scoped enough of the wall cavities and subfloor to know what the job actually involves. If the original 1954 drain lines are rotted, you’ll have a written allowance for a repipe in your contract before we start, not a change order after we’ve already torn out your shower. Call (866) 808-7312 to schedule an inspection and get a real number.

Waterproofing and Tile Installation
Riverside’s hot, dry summers and the occasional Santa Ana dust storm don’t cause shower leaks directly, but the original waterproofing methods in 1950s and 1960s homes do. We regularly pull out lead pans that have been leaking for years, hidden behind walls and under floors. Our rebuilds use modern waterproofing membranes and properly sloped bases, plus we inspect the framing beneath before we lay a single tile. If you’re in 92501 or 92506 and your shower has been there since the house was built, it’s worth having us look at it before the grout lines tell you something’s wrong.

Electrical and Plumbing Upgrades for Code Compliance
Riverside’s older tract homes were wired for a different era. When we add a dedicated 20-amp circuit for GFCI outlets, a properly vented exhaust fan, and lighting to a bathroom, the 100-amp panel from 1958 might not have room. We handle the panel assessment and upgrade as part of the remodel, and we’ll tell you early if yours needs it. The same goes for plumbing: galvanized supply lines that pass inspection when untouched can fail once water pressure changes after a new valve installs. We price these upgrades into the allowance line, not as a surprise at punch-list.

What happens when you call
- 1
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 Riverside
If you’ve been researching bathroom fixtures or materials, you’ve probably run across James Hardie, and you may have seen our ADU work with Plant Prefab or Boxabl. We bring that same brand fluency to bathrooms. James Hardie isn’t a bathroom product, but the standard it represents, durability and a real warranty, is what we carry into every material choice we spec for your Riverside bath. We work with suppliers across the Inland Empire, so sourcing tile, shower pans, and hardware locally in Riverside doesn’t add lead time to your remodel.
Common Bathroom Remodeling Problems We See in Riverside Homes
- Galvanized supply lines behind original tile: In 1950s Riverside ranches, especially around 92506 and 92501, the original galvanized pipes corrode from the inside. They can pass a visual inspection and fail a pressure test once we open the wall and disturb the joints. We allow for a copper repipe or PEX replacement in the contract, with the cost approval in writing before we cut.
- Undersized 100-amp or fused panels: Many Riverside tract homes were built with panels sized for lights, a few outlets, and a window A/C unit. Adding a modern bathroom circuit, an exhaust fan, and GFCI outlets can trip the panel and fails code. We assess your panel during the inspection and include the upgrade in the initial quote if it’s needed.
- Rotted subfloor under failed lead pans: The original shower pans in 1950s and 1960s Riverside homes were made of lead, and they fail over time. By the time the leak shows up in the kitchen ceiling below, the subfloor is frequently rotted. We’ve replaced more subfloors in Riverside 92504 and 92506 than we can count, and we always check the framing while we’re in there.
- Missing or improper venting: Riverside’s semi-arid climate means surface mold is less common than in coastal cities, but stagnant moisture in a poorly vented bathroom still causes plaster damage and wood rot. Older ranch homes often have either no exhaust vent or a vent that dumps into the attic, which is a code violation. We correct the venting as part of every full remodel.
Pricing for Bathroom Remodeling in Riverside, CA
A standard hall bath remodel in Riverside, with new tile, a cast-iron tub or shower pan, a new vanity, and updated plumbing fixtures, typically runs $18,000 to $30,000. A larger master bath with a walk-in shower, custom tile, and possibly moving the toilet or sink lands between $35,000 and $65,000. What moves the number isn’t the tile selection, it’s what we find when the walls are open. A galvanized repipe adds $3,000 to $6,000. A panel upgrade runs $2,500 to $5,000 depending on the panel and the distance from the meter. We write these as allowances in your contract, with a line-item price for each, so you approve the actual number in writing before we spend a dollar of it. Call (866) 808-7312 for a free estimate, and we’ll walk your bathroom with you before we talk numbers.
We Also Serve Cities Near Riverside
Our Bathroom Remodeling in Riverside service area extends to the surrounding communities, including Rubidoux, Glen Avon, Pedley, and Sunnyslope. If you’re in one of those neighborhoods and your house is a 1960s ranch with the same galvanized pipes and undersized panel we see across Riverside, give us a call. We schedule inspections across the area every week.
Serving Riverside, CA — Our Local Coverage Area
We’re based in the Riverside 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 Riverside
The quote changes because the original galvanized plumbing or a failed lead pan hidden behind the tile was only visible once the walls were opened. We prevent this by doing a pre-inspection and writing allowances into your contract, so each potential issue has a line-item price you approve before we start work. Call (866) 808-7312 and ask Neil Stratton to explain how the allowance structure works.
It often does, because the original 100-amp panels in Riverside’s 1950s tract homes don’t have room for the dedicated GFCI circuits, vent fan, and lighting a code-compliant bathroom requires. We check your panel during the pre-inspection and tell you before the contract is written whether we’ll need a 200-amp or subpanel addition.
The most common issue we find is a failed lead pan under the original shower, which has likely been leaking long enough to rot the subfloor and framing beneath it. In Riverside’s 1950s and 1960s homes, we also see mastic waterproofing that’s degraded and grout lines that were never sealed. We replace all of it with modern waterproof membranes and proper drainage.
Sometimes, if the galvanized supply lines are in good shape and the remodel is only a surface update, but that’s rare in homes built before 1970. When we open a wall in a 1950s Riverside ranch, the galvanized lines are usually corroded and need replacement. We write a repipe allowance into your contract so the cost is known and approved before we cut.
We treat any code-required upgrade, GFCI circuits, venting corrections, or structural repair, as a priority line item in the quote. If an inspector requires something additional once the wall is open, we price it and get your written approval before the work proceeds. The goal is a final inspection that passes the first time. Call (866) 808-7312 to schedule an inspection and see what your specific Riverside home will require.
Call Cottage ADU Builders for Your Riverside Bathroom Remodel
If your Riverside home is a 1950s ranch in 92506 or a 1980s tract house in 92504, the bathroom remodel you’re planning has a real cost and a real timeline, and we’ll tell you both before we start. We’re led by Neil Stratton and based nearby in Murrieta, and we’re in Riverside neighborhoods every week. Call (866) 808-7312 to schedule your free estimate. We’ll walk the bathroom, open what needs opening, and give you a contract with written allowances for what’s behind the walls. No surprises after demo, just a bathroom built for the next 50 years.
Written by Neil Stratton, Owner at Cottage ADU Builders, serving Riverside and the Inland Empire.