Fast, Reliable Bathroom Remodeling Across Redlands
Bathroom remodeling in Redlands typically costs $14,000 – $38,000 for a full gut renovation, with ADU bathroom additions running $18,000 – $45,000 depending on whether you’re tying into an existing sewer lateral or trenching through a citrus grove. Most projects take 3 – 6 weeks once permits clear, though Historic District review in the 92373 core can add 2 – 4 weeks to that timeline. Sunburst ADU Builders works throughout Redlands, from the Craftsman bungalows off Cajon Street to mid-century lots in 92374, and we’ve built enough bathrooms here to know what this specific city throws at you. Call (855) 676-6807 for a straight answer on your project.

What separates a Redlands bathroom remodel from one in Rancho Cucamonga or Beaumont isn’t the tile selection. It’s what’s behind the walls and under the slab. The city’s housing stock sits inside a built-out 19th-century grid, full of 1920s-1950s homes on lots that still hold century-old navel orange trees. When we run a drain line or reconfigure a bathroom footprint, we’re not working around fresh tract-lot soil. We’re working around root systems that predate the Eisenhower administration, and doing it in a climate that punishes the wrong fastener within two summers.
Why Sunburst ADU Builders Is Redlands’s Preferred Bathroom Remodeling Company
We didn’t add bathrooms to a menu of general contracting services. We started as an ADU builder, and bathrooms are where ADU construction succeeds or fails. That focus matters in Redlands, where a large share of our bathroom work happens inside detached ADUs squeezed behind original bungalows on South Center Street, Brookside Avenue, or the streets running east of the University of Redlands. Those projects aren’t standard remodels. They’re technically demanding builds that require coordinating drain lines, ventilation, and waterproofing with the same care as the unit’s shell.
Our project lead, Noel Carrasco, has walked dozens of Redlands lots from the 92373 core up through 92375 near Sunset Drive. That local repetition means we can tell you before we open a wall whether your panel has capacity for an electric towel warmer, whether your existing vent stack can handle a relocated toilet, and whether the city will make you hand-dig around that 80-year-old orange tree in the back corner. You don’t get those answers from a contractor who drives in from Riverside twice a month.
We also come with a perspective most bathroom remodelers in Redlands can’t offer. Because we build Bathroom Remodeling projects inside ADUs across six prefab platforms plus stick-built, we know how bathroom plumbing, waterproofing, and ventilation interact with the building envelope. When we spec a bathroom inside a Mighty Buildings panelized ADU or a Tuff Shed conversion, we’re matching the bathroom to how that structure breathes, drains, and expands in Redlands heat. That’s the difference between a bathroom that lasts and one that starts failing behind the tile in year three.
Our Bathroom Remodeling Services in Redlands
Shower and Tub Conversions
Redlands homeowners are steadily trading 1950s cast-iron tubs for walk-in showers, especially in ADUs built for aging parents or rental tenants. The conversion work here runs into two recurring issues: original plumbing set in slabs that have shifted over 70+ years of Inland Empire heat, and bathroom footprints that were never designed for modern shower dimensions. We re-route drains, reinforce subfloors, and handle the structural side before a single tile gets set. In the 92373 core, we’ve done several conversions where the original bathroom sat directly above a crawlspace full of galvanized supply lines that needed full replacement before waterproofing could begin.

Vanity and Fixture Upgrades
A vanity upgrade in Redlands often turns into more than swapping cabinets. Older homes in 92373 and 92374 frequently have undersized supply lines, galvanized nipples behind the wall, and shutoff valves that haven’t been exercised since the Carter administration. We replace the rough plumbing first, then install vanities, fixtures, and faucets that make sense for Redlands’ hard water conditions. If you’re planning a double vanity, we’ll check your drain sizing and vent configuration before you buy anything, because a second sink on an old 1-1/4″ drain line is a guaranteed slow-drain problem.

Tile and Waterproofing
This is where Redlands separates serious contractors from tile-setters who learned their trade in coastal LA. Our semi-arid climate sees 100°F+ summer temperatures and Santa Ana wind events that drive fine dust into every unsealed gap. We use cement board with proper seam taping, liquid-applied waterproofing membranes, and silicone at every change of plane. We don’t use paper-faced backer board in showers, period. The combination of Redlands heat and wind-driven moisture turns that product into a mold substrate faster than most homeowners would believe.

ADU Bathroom Build-Outs
Roughly half our bathroom work in Redlands is finishing bathrooms inside ADUs, either new builds or conversions. These projects bring every local constraint into one room: root-sensitive trenching for drain lines, Historic District design review when the ADU sits behind a preserved home in the 92373 core, panel capacity questions for instant-hot showers, and ventilation routing that survives Santa Ana wind pressure. We handle the full scope from rough plumbing through finish tile, so the homeowner isn’t coordinating three separate trades inside a 60-square-foot bathroom.

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 Redlands
Because we build ADUs across multiple prefab platforms, our Redlands bathroom work frequently happens inside structures from Mighty Buildings, Plant Prefab, and Tuff Shed conversions. We understand how each of these shells handles plumbing chases, vent stacks, and bathroom ventilation, which means we’re not reverse-engineering manufacturer specs after the fact. We’re matching the bathroom build to the platform’s engineering from the first permit drawing. For homeowners comparing prefab versus stick-built ADUs, that fluency matters. Your bathroom is where a poorly integrated build shows its seams first.
Common Bathroom Remodeling Problems We See in Redlands Homes
- Corroded fasteners behind tile: Standard galvanized drywall screws used in shower surrounds fail quickly here. Redlands’ 100°F+ attic heat and wind-driven dust accelerate corrosion, and we regularly find cement board pulling loose when we demo showers in 92373-era homes. We rehang with stainless fasteners and marine-grade sealant at every penetration.
- Root-damaged drain lines: Many Redlands lots still hold mature navel orange trees, some planted before WWII. When bathroom drains run toward the rear lot, roots find their way into old clay or cast iron pipe. We scope existing lines before trenching, and when we do trench near preserved trees, we hand-dig and route around structural roots rather than cutting through them.
- Undersized exhaust ventilation: Bathroom fans in older Redlands homes often vent into the attic, not outside. In a climate with 100°F+ summers, that means hot, moist air pushing into an already-hot attic space, which degrades insulation and invites mold. We route exhaust properly through roof or wall, with backdraft dampers rated for Santa Ana wind pressure.
- Paper-faced backer and unsealed seams: We see this constantly in remodels done by crews unfamiliar with Inland Empire conditions. Paper-faced backer board behind tile soaks up moisture from a semi-arid building envelope’s temperature swings, then mold sets in behind the grout lines. We strip it out and start over with proper cement board, seam tape, and liquid waterproofing.
Pricing for Bathroom Remodeling in Redlands, CA
Bathroom remodeling in Redlands breaks down roughly like this: a cosmetic refresh with new vanity, fixtures, toilet, paint, and lighting runs $8,000 – $14,000. A standard gut remodel in the 92373 core with new tile, shower pan, waterproofing, and relocation of existing fixtures lands between $14,000 and $28,000. ADU bathroom build-outs, where we’re running new drain lines, roughed-in plumbing, ventilation, and full finishes, typically run $18,000 – $45,000 depending on trenching distance, whether we’re hand-digging around preserved citrus trees, and whether Historic District review adds to the permit timeline. Redlands tends to run 10 – 15% higher than similar work in newer Inland Empire tract cities to the south, because the housing stock is older, the lots are more constrained, and the preservation requirements are real. We provide free written estimates. Call (855) 676-6807 to schedule yours, and we’ll give you a line-item number, not a vague range.
We Also Serve Cities Near Redlands
Our Redlands crews regularly work in Mentone, Loma Linda, Highland, and Colton. Much of our ADU and bathroom work in those cities draws on the same local knowledge we use across Redlands: semi-arid heat, older housing stock, and wind-driven dust are regional conditions, not city-specific ones. If you’re in a neighboring city planning a bathroom remodel or ADU build-out, call (855) 676-6807 and we’ll tell you honestly whether your project makes sense for our schedule.
Serving Redlands, CA — Our Local Coverage Area
We’re based in the Redlands 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 Redlands
Santa Ana wind events push fine dust and airborne grit through unsealed vent frames, which wears out fan bearings and clogs louvers within a few seasons. Coastal LA doesn’t see the same sustained wind-driven particulate load. We install exhaust fans with sealed housings and wind-rated backdraft dampers specifically to handle Redlands conditions. Call (855) 676-6807 and we’ll spec the right fan for your bathroom’s square footage and vent run length.
Yes, in most cases. Redlands’ Historic District design review requires preserving mature citrus trees on many rear lots, which means drain lines often need to be hand-dug and routed around structural roots rather than trenched through the root zone. We scout the existing root structure before finalizing any bathroom layout. If you’re planning an ADU bathroom and want to know whether your grove is a constraint, call (855) 676-6807 for a free site walk.
We use stainless steel fasteners in every shower surround, cement board application, and exterior-adjacent penetration. Standard galvanized screws fail quickly in Redlands’ 100°F+ heat and wind-driven dust conditions, which is why we’ve had to redo work originally done with builder-grade hardware. Stainless costs more up front, but it doesn’t pull loose behind tile in year four. You can call (855) 676-6807 to discuss your specific project.
Interior bathroom work in an existing ADU typically doesn’t trigger design review unless you’re changing the building’s exterior or moving plumbing that requires new exterior vents or roof penetrations. But in the 92373 core, any exterior change, including a new exhaust vent location or roof jack, can require review. We handle the paperwork and coordinate with city staff, but you should plan for an additional 2 – 4 weeks if your project touches the exterior. Call (855) 676-6807 and we’ll tell you early whether review applies to your bathroom.
Yes. Redlands’ 100°F+ summers and Santa Ana wind events create a building envelope that cycles between extreme heat and periods of wind-driven moisture, which puts real stress on bathroom waterproofing. We use cement board with taped and sealed seams, liquid-applied membranes, and silicone at every change of plane. The semi-arid climate doesn’t mean less moisture risk; it means moisture gets delivered in unpredictable wind events and then cooks into the wall cavity. For an accurate quote on your Redlands bathroom, call (855) 676-6807.
Written by Noel Carrasco, Owner at Sunburst ADU Builders, serving Redlands and the greater Inland Empire.