Fast, Reliable Bathroom Remodeling Across Moreno Valley
A full bathroom remodel in Moreno Valley typically runs $18,000 to $38,000, with shower waterproofing and drain relocation landing between $4,500 and $9,500 depending on what’s behind your walls. We’re Cottage ADU Builders, and we’ve remodeled bathrooms throughout Moreno Valley’s 92551, 92552, 92553, and 92554 zip codes long enough to know what these tract homes hide once demo starts. Neil Stratton leads our crew, and we handle everything from permit drawing to final grout, including the post-tension slab work most remodelers don’t plan for. Call (866) 808-7312 for a free estimate, and we’ll walk your specific floor plan before quoting anything.
Why Cottage ADU Builders Is Moreno Valley’s Preferred Bathroom Remodeling Company
We’ve spent enough hours inside Moreno Valley’s 1980s and 1990s tract homes to know exactly what’s behind the drywall before we open it. The stucco-over-wood-frame construction, the post-tension slabs on the east side, the original copper that’s been patched a dozen times: these are the things that turn a routine remodel into a mess if your contractor hasn’t seen them before. We have.
Our Bathroom Remodeling team works almost entirely in the Inland Empire, and a good chunk of that is right here in Moreno Valley. Homeowners in Rancho Belago, Sunnymead, and the newer tracts around Moreno Beach Drive call us because we’re not figuring out their house type for the first time. We’ve already pulled permits at Moreno Valley City Hall, we know what the inspectors look for, and we don’t treat your home like a learning experience.
We’re not a general contractor who takes a bathroom job to fill a slow week. Our whole business is residential square footage: ADUs, kitchens, and bathrooms. That focus means our crew has waterproofed more Moreno Valley showers and relocated more drains over post-tension slabs than contractors who split their time between commercial work and roofing. It shows in how we price and how we execute.
Our Bathroom Remodeling Services in Moreno Valley
Full Bathroom Remodel
A full remodel means gutting to the studs and rebuilding everything: waterproofing, plumbing, electrical, fixtures, tile, and trim. In Moreno Valley’s two-story Mediterranean-style tract homes, this often involves working around a bathroom that sits directly above a living space, which makes waterproofing and drain integrity non-negotiable. We handle the whole thing under one contract, from permit drawings through final inspection, so you’re not coordinating a plumber, an electrician, and a tile crew yourself.

Shower Waterproofing
Moreno Valley’s hot, dry summers can hide slow shower leaks for months. The moisture evaporates before it stains the ceiling below, which means a failed shower pan can go unnoticed until framing rot or mold is already underway. We use Schluter Kerdi membrane systems on our showers, not just cement board and hope. It’s a continuous waterproofing layer, and we flood-test every pan before a single tile goes down. In this climate, that test matters more than people realize.

Drain Relocation
Moving a drain in a Moreno Valley bathroom often means cutting into a post-tension slab, and that’s where we earn our keep. In the east-side tracts and newer subdivisions, the foundations hold tensioned steel cables that run through the concrete. Cut one without locating it first and you’re looking at a slab repair bill in the thousands. We locate and mark every cable before the saw touches concrete, and we price that step into the estimate up front. That’s the difference between a planned remodel and an emergency.

Shower Pan Replacement
Original shower pans in 1980s and 1990s Moreno Valley homes are almost always past their service life. We remove the old pan, inspect the subfloor and framing beneath it, and rebuild with a dry-pack bed over a bonded waterproofing membrane. If the drain location needs to shift for a curbless entry, we handle that too, post-tension cables and all. You get a shower that’s sealed properly, not one that relies on grout to keep water out.

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 Moreno Valley
We’re not tied to one manufacturer, and that matters when you’re comparing materials for a Moreno Valley remodel. Our team works with James Hardie fiber-cement siding on exterior applications, and we’re familiar with prefab systems from Boxabl, Plant Prefab, and Tuff Shed for attached or detached additions. When a bathroom overhaul is part of a larger project, like adding a prefab ADU with its own bath, we’re already fluent in the factory specs and utility sequencing those systems require. For your main-home bathroom, we specify brands we trust: Schluter Kerdi for waterproofing, PEX for supply lines, and fixtures that hold up to Moreno Valley’s hard water, which eats cheap chrome and unsealed brass. We order materials locally where we can, which keeps lead times shorter than they’d be from a contractor ordering out of LA.
Common Bathroom Remodeling Problems We See in Moreno Valley Homes
- Post-tension slab surprises: On the east side and in newer tracts, homeowners ask us to move a toilet or add a curbless shower, and the drain relocation means cutting into a post-tension slab. Cables have to be located and marked before any concrete is cut. Skipping this step risks a cable strike that can cost thousands to repair.
- Polybutylene and patched copper supply lines: We open walls in 1980s and 1990s Moreno Valley homes and regularly find original copper that’s been spliced with polybutylene fittings or sharkbite workarounds. Those connections are time bombs. We replace them with PEX while the walls are open, because re-tiling over failing supply lines is a guaranteed future redo.
- Failed shower waterproofing: The original pans in many Moreno Valley tract homes were built with hot-mop or vinyl liners that are now cracked and dry-rotted. In a dry climate, the leak doesn’t announce itself. By the time you see a stain, the framing underneath is already damaged. We treat every remodel as a waterproofing gut-check, not just a cosmetic refresh.
- Undersized ventilation: Moreno Valley summers run 95 to 105 degrees regularly, and original bathroom exhaust fans in these tract homes are often undersized or vented into the attic instead of outside. That’s a humidity problem hiding behind the ceiling. We size and route new exhaust fans properly, which protects your new paint and tile from condensation damage.
Pricing for Bathroom Remodeling in Moreno Valley, CA
Here are honest ranges based on what we’ve bid and built in Moreno Valley. A hallway or guest bath remodel, with new tub/shower, vanity, lighting, and flooring, runs about $15,000 to $24,000. A primary bath with a separate shower and tub, custom tile, and a new layout lands between $25,000 and $38,000. Shower-only waterproofing and pan replacement, without relocating drains, is typically $4,500 to $7,500. When we need to cut into a post-tension slab to move a drain or add a curbless entry, expect that scope to add $1,200 to $3,500, including cable location, concrete cutting, and re-pour.
What moves the price: whether you’re on a slab or raised foundation, how far you’re moving plumbing, whether we’re replacing polybutylene or galvanized lines, and what the framing looks like once we open the wall. We don’t guess on any of that. We inspect first, then write a line-item quote. Call (866) 808-7312 to schedule your free estimate, and we’ll give you a fixed number before any work starts.
Key Takeaways:
- Full bathroom remodels in Moreno Valley: $18,000 – $38,000 typical.
- Post-tension slab drain work adds $1,200 – $3,500, and we locate cables before cutting.
- We replace failing supply lines and waterproofing while walls are open, not after.
- Free written estimates with line-item pricing. No change orders without your written approval.
We Also Serve Cities Near Moreno Valley
Cottage ADU Builders is based in Murrieta, but our crews are in Moreno Valley regularly. If you’re in Moreno Valley proper, we’re already familiar with your neighborhood. We also take projects in March Air Force Base, Woodcrest, Colton, and Loma Linda. Same crew, same pricing structure, same attention to what’s actually behind your walls. If you’re near the 60 or 215, we can get to you without making you wait for a scheduling window that never comes.
Serving Moreno Valley, CA — Our Local Coverage Area
We’re based in the Moreno Valley 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 Moreno Valley
Because many Moreno Valley homes, especially in the east-side tracts built from the late 1980s onward, sit on post-tension concrete slabs. These slabs contain steel cables under tension. If your remodel involves moving a drain, adding a curbless shower, or cutting into the foundation, those cables must be located and marked before any cutting happens. We do this on every slab job, and the cost is written into your estimate up front, not sprung on you after the saw is already running. Call (866) 808-7312 if you’re planning a layout change and want to know whether your home is on a post-tension slab.
Mostly aluminum branch wiring in the 1980s homes and under-grounded circuits in some 1990s builds. We also see original exhaust fans that were never vented to the outside, just blowing humid air into the attic. When we open your bathroom walls, we inspect the wiring, and if a permit is pulled, Moreno Valley code requires us to bring accessible electrical up to current standards. That might mean arc-fault protection, a dedicated circuit, or replacing damaged conductors. We’ll tell you exactly what’s needed and what it costs before we touch it.
We stop and show you. If we open a wall and find water-damaged studs, termite damage, or framing that was undersized from the original build, we document it with photos and give you a written change order with the exact repair scope and price. You approve it before we proceed. In the Sunnymead area, we opened a 1990s hall bath and found the original copper supply lines had been patched with polybutylene and the shower pan was dry-packed over a post-tension slab. After locating and marking the tensioned cables, we re-routed the drain for a curbless shower, replaced the supply lines with PEX, and installed a Schluter Kerdi waterproofing system. The homeowner received a written change order for the cable-location cost before we cut any concrete. That’s how it works on every job.
Yes, often. When you pull a permit for a bathroom remodel in Moreno Valley, the inspector may require GFCI protection on all outlets in the room, hardwired or properly vented exhaust fans, and sometimes tempered glass on windows near wet areas. If we’re moving a drain or altering the plumbing rough-in, the city will also review the drain slope and venting against current code. None of these are surprises to us, and we budget for the common ones in our initial estimate. The uncommon ones get a written change order with your sign-off before we proceed.
We use Schluter Kerdi membrane waterproofing on shower walls and pans. The reason is simple: it’s a continuous, bonded membrane that doesn’t rely on grout or cement board to keep water out. In Moreno Valley’s dry climate, slow leaks can go undetected for months because moisture evaporates before it shows on the ceiling below. A proper membrane system eliminates that risk. We also flood-test every pan for 24 hours before tile is installed, and we document it with photos. If you’ve had a shower leak before, or you’re worried your original pan is failing, call (866) 808-7312 and we’ll inspect it.
Get Your Free Moreno Valley Bathroom Remodel Estimate
You deserve a contractor who knows what’s behind your Moreno Valley walls before they open them. Call (866) 808-7312 to schedule a free, no-pressure estimate. We’ll walk your bathroom, check your slab type, discuss your layout goals, and give you a line-item quote with real numbers. No vague ranges, no surprises, no change orders without your written approval. Neil Stratton leads the crew, and we stand behind every shower we waterproof and every drain we relocate in Moreno Valley.
Written by Neil Stratton, Owner at Cottage ADU Builders, serving Moreno Valley and the Inland Empire.