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Fast, Reliable Bathroom Remodeling Across Monrovia
A full bathroom remodel in Monrovia typically runs $9,000 to $28,000, with tub-to-shower conversions landing between $3,500 and $10,000 depending on what’s behind your walls. That range reflects what we actually see across Monrovia’s citrus-era bungalows and 1950s-60s ranch homes, not a national average pulled from a spreadsheet. If you’re planning a bathroom remodel in Monrovia, call (803) 680-2547 and we’ll walk the job with you, open the walls, and put a written price in your hands before any work starts.
Mason Remodeling brings a full Bathroom Remodeling team to every Monrovia project, from a tub-to-shower conversion off West Foothill Boulevard to a master bath gut in the foothills north of Hillcrest. Crews are dispatched from our Los Angeles office and serve Monrovia locally.
Why Mason Remodeling Is Monrovia’s Preferred Bathroom Remodeling Company

Monrovia homeowners tend to ask the same two questions before they sign anything: who is actually coming through my door, and what does the number mean. We answer both before we touch a tool. Every crew member is identity-verified, background-checked, and uniformed, and you get their name and photo before they arrive, plus a photo ID badge at the door. That’s the Threshold Standard, and it’s how we’ve operated since Mason Remodeling was founded in 2004 as part of the Threshold Group family.
Monrovia reviews mention the same things over and over: the price didn’t move, the crew showed up when they said they would, and the guy in the photo was the guy at the door. Around Old Town Monrovia and the Harvard place neighborhoods, word travels fast, and a remodeler who quotes one number and invoices another doesn’t last. We put every price in writing before work begins, and the 365-Day Done Right Promise covers the work for a full year from completion.
Isaac Pruett leads the Mason Remodeling team, and he holds every Monrovia job to the same standard: written price, written guarantee, no surprises. If a homeowner calls at 2 a.m. wondering about a shower pan, a live person answers, every day of the year.
Styles & brands we work with







Tub to Shower Conversion in Monrovia
A tub to shower conversion in Monrovia means pulling out the old tub, re-working the drain and supply plumbing to fit a shower receptor, waterproofing the walls, and setting tile or a surround. In Monrovia’s pre-1960 housing stock, that first step often uncovers galvanized supply lines and cast-iron drain pipes that were furred in when the house was built, and those usually need to be re-routed to PEX and ABS before the shower goes in. A straight conversion runs $3,500 to $10,000; when the plumbing and subfloor need real work, the job moves into the $9,000 to $28,000 full bathroom remodel range.
What the Plumbing Tells Us
On a 1950s ranch house off West Foothill Boulevard, we opened the walls of a hall bath for a tub-to-shower conversion and found galvanized supply lines furred to the original cast-iron drain. Our tech re-roughed the plumbing to PEX and ABS, set a Kohler shower valve and receptor, and tiled over a new cement backer board once the permit inspection sign-off came through. That’s the difference between a quote that holds and a quote that was never real.
When a Monrovia Homeowner Makes the Switch
Most tub-to-shower conversions happen because someone in the house can no longer step over the tub wall safely, or because the tub simply doesn’t get used and the space feels wasted. In Monrovia’s smaller post-war bathrooms, a shower opens the room visually and gives you back six to eight inches of floor space. It’s one of the highest-return changes you can make to an older bath.
One Day Bath Remodel in Monrovia

A one day bath remodel in Monrovia is a scoped retrofit: a new shower base and wall surround set over existing plumbing, a replacement vanity, new toilet, and updated fixtures. It works when the rough plumbing and subfloor are sound and the layout isn’t changing. In Monrovia homes built before 1960, that’s the caveat, because original cast-iron drains and galvanized supply lines often need more than one day’s work once the old materials come out.
The honest local range for a one-day bath remodel sits at the lower end of the full bathroom remodel spectrum, typically $9,000 to $14,000 for quality materials and a real waterproofing system. A tub-to-shower swap done as a one-day job lands between $3,500 and $10,000. Before we promise one day on a Monrovia home, we look behind the wall, because what’s back there decides whether the timeline holds.
What a One-Day Scope Covers
A true one-day bath keeps the existing footprint: no moving the toilet flange, no relocating drain stacks, no electrical rework. We strip the old surround, set waterproof backer, hang the new wall system, and set the receptor and trim. The job is clean by evening, with the bathroom usable the same night.
What It Doesn’t Cover
If the subfloor under the old tub is rotted, or the vent stack is undersized, or the supply lines are galvanized and corroded, a one-day timeline turns into a two-to-three-day plumbing repair plus tile work. We won’t hide that from you. We’ll show you photos from inside the wall before we ask for another dollar.
Trusted Brands We Service in Monrovia
We work with specification-grade materials across cabinetry, surfaces, and fixtures, including Kohler, Moen, Cambria, and Silestone. For Monrovia customers, that means a vanity or shower valve we specify one day is in hand the next, because we maintain local parts relationships and don’t wait on a big-box order window. Whether you’re re-tiling a bath in the Mayflower Village area or replacing a vanity near Monrovia High School, we’re working from the same catalog a custom builder uses, not a clearance aisle.
See the difference
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AfterCommon Bathroom Remodeling Problems We See in Monrovia Homes
- Galvanized supply lines and cast-iron drains. Monrovia’s citrus-era and early post-war homes frequently still have original plumbing behind the walls. These pipes corrode from the inside and can snap when a tub comes out, which is why a $3,500 conversion can turn into a $9,000 remodel once we open the wall.
- Rotted subfloor under the original tub. Decades of slow leaks around the drain shoe or tub overflow stay hidden until the tub is lifted. In Monrovia’s older slab homes, that often means cutting out a section of plywood underlayment and sistering new joists before the shower receptor can be set level.
- Undersized vent stacks. Many pre-1960 Monrovia baths were plumbed with 1 1/2-inch vent lines that don’t meet current code for a shower with a modern 2-inch drain. Fixing it is a half-day plumbing job, but it has to be inspected before tile goes up.
- Wall framing out of plumb. In older homes, the studs behind an original tub surround are often off by half an inch or more. Tile won’t sit flat on that. We shim and sister the framing before backer goes up, or the finished wall will show waves in the grout lines.
Pricing for Bathroom Remodeling in Monrovia, CA
| Project | Monrovia Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
What moves a Monrovia bathroom remodel within that $9,000 to $28,000 range? The plumbing material behind the wall is the biggest factor, followed by waterproofing method, tile footage, fixture grade, and whether the floor plan changes. A guest bath with a fiberglass surround and basic vanity lands near the bottom. A master bath with a walk-in shower, custom tile, a double vanity, and a Toto or Kohler fixture package lands near the top. We provide a written line-item price on every project, before any work starts. Call (803) 680-2547 for a free estimate.
We Also Serve Cities Near Monrovia
Our Bathroom Remodeling in Monrovia service area reaches homeowners in Arcadia, Duarte, Sierra Madre, and Baldwin Park. If you’re just over the line from Monrovia, the same crew, the same written-price policy, and the same 365-Day Done Right Promise apply.
Serving Monrovia, CA - Our Local Coverage Area
We’re based in the Monrovia 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 About Bathroom Remodeling in Monrovia
Yes. A tub-to-shower conversion in Monrovia changes the drainage configuration and requires a plumbing permit and an inspection sign-off from the city before the walls are closed. We pull the permit, schedule the inspection, and don’t cover any rough-in work until it passes. Skipping the permit saves a few hundred dollars up front and creates problems when you sell the house.
In Monrovia homes built before 1960, the most common reason is original galvanized supply lines or cast-iron drains that need replacement once the wall is open. Rotted subfloor and undersized vent stacks are close behind. We can’t see those until demolition, which is why we write our quotes with a written scope and a clearly stated change-order process, not a fuzzy handshake number. Call (803) 680-2547 and we’ll walk you through how we handle it.
A full bathroom remodel in Monrovia typically takes three to five weeks from demolition to final fixture set, including permit inspections. A tub-to-shower conversion without major plumbing surprises runs one to two weeks. A one-day bath remodel on a home with solid plumbing and subfloor is done in a single day.
A full bathroom remodel in Monrovia costs $9,000 to $28,000. Small bathrooms run $5,000 to $12,000. Tub-to-shower conversions run $3,500 to $10,000, and walk-in shower installation runs $4,500 to $12,000. Every Mason Remodeling price is written before work starts, so the number you approve is the number on the final invoice.
If your Monrovia home has sound subfloor, adequate plumbing, and the layout isn’t changing, yes, a one-day bath remodel is possible. If you’re in a pre-1960 home with original galvanized supply and cast-iron drain lines, we’ll likely recommend a scoped plumbing repair first, which moves the job to a two-to-three-day timeline. Call (803) 680-2547 and we’ll tell you which one applies to your house, honestly, before you commit to anything.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Monrovia since 2004.










