Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Monrovia
Bathroom remodeling in Monrovia, CA typically runs $9,000 to $28,000 for a full gut renovation, with smaller jobs like a tub-to-shower conversion landing between $3,500 and $10,000. Most Monrovia homeowners start with a free estimate and a written line-item bid so they know exactly where the money goes before demolition starts. If you’re in the 91016 foothills or the 91017 flatlands, call Barrett & Sons Construction at (877) 610-1318 and we’ll walk you through what your specific house actually needs.
We’ve been doing Bathroom Remodeling in Monrovia long enough to know which houses on which streets come with which headaches. A 1925 Craftsman off Myrtle Avenue is a different animal than a 1998 custom build above Monrovia Canyon. That local knowledge keeps your permit from getting stuck and your budget from getting surprised.
Why Barrett & Sons Construction Is Monrovia’s Preferred Bathroom Remodeling Company
Tom Barrett started this company in 1998, and he still answers his own phone. His sons run the crews. When you hire Barrett & Sons for a bathroom remodel in Monrovia, the name on the truck is the name on the contract is the name that shows up on-site. No franchise. No strangers dispatched from a call center.
Every bathroom remodel we do in Monrovia includes permits pulled and inspections signed. We write every scope change as a change order before work proceeds. No “we’ll figure it out at the end” billing. If you get a price, it’s on paper. If the price changes, it’s on paper first. That’s how we’ve kept a strong local reputation for over 29 years, and it’s why homeowners from north of Foothill Boulevard all the way down to Duarte Road keep calling us back.
Our 90-Day Done Right Promise is written on every contract. If something is not done right, Tom comes back and makes it right. One call. That’s the whole promise, and it applies to every bathroom remodel we complete in Monrovia.
Our Bathroom Remodeling Services in Monrovia
Full Bathroom Remodeling
A full bathroom remodel in Monrovia means tearing down to studs, replacing the subfloor, redoing plumbing and electrical, and building back new. For older Craftsman bungalows in the flatland core, this almost always includes galvanized pipe replacement and a sub-panel upgrade before rough-in can pass. For foothill homes in 91016, it often means fire-hardening exterior penetrations to keep the permit moving. We price the work honestly up front and deliver written change orders for anything that shifts.

Walk-In Showers & Shower Remodeling
Walk-in shower installation in Monrovia runs $4,500 to $12,000 depending on tile choices, glass enclosure type, and whether we’re moving the drain. We install Schluter waterproofing systems on nearly every shower we build. On hillside lots above Monrovia Canyon, we also check for slab settling before tile goes in. A cracked mud bed on a cut-and-fill lot is a failure waiting to happen, and we’d rather catch it before your tile does.

Tub-to-Shower Conversion
Converting a tub to a shower in Monrovia costs $3,500 to $10,000. Most homeowners making this switch are looking for easier access and less maintenance. For split-level homes in the northern foothills, the conversion also opens up floor space in bathrooms that were squeezed into tight lot footprints. We handle the drain relocation, waterproofing, and the custom pan, plus the frameless glass enclosure that makes the space feel bigger.

Vanities, Tile & Fixtures
Vanity installation in Monrovia runs $800 to $3,000 for a quality single or double sink setup. We carry premium fixtures you can research, including Grohe for faucetry and Sterling for tubs and shower bases. Tile work on Monrovia’s older homes frequently hides surprises behind the walls, which is why we open the wall before quoting drywall repair, not after. No allowance that isn’t on paper is a surprise waiting for a date.

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.
- 3
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 Monrovia
We don’t install mystery materials off the back of a van. For Monrovia bathroom remodels, we regularly work with Schluter waterproofing systems, Sterling tub and shower units, and Grohe fixtures. These are brands you can look up, with warranties we can enforce if something fails. Because we stock Schluter shower kits and Sterling bases locally, we avoid the two-week wait that a special-order from a big-box store can add to a Monrovia project.
Common Bathroom Remodeling Problems We See in Monrovia Homes
- Chapter 7A fire requirements on foothill lots: Bathroom remodels in Monrovia’s northern tier (91016) sit inside a Very High Fire Hazard Severity Zone. If your project touches an exterior wall, a vent, or a window, the city can require ignition-resistant materials and ember-resistant vents before sign-off. Skipping that check at the start means a stalled permit at the end.
- Galvanized pipe and outdated sub-panels in pre-1950 homes: Flatland Monrovia is packed with Craftsman and Period Revival homes from the 1910s through the 1940s. Open a bathroom wall and you’ll often find galvanized supply lines that must be replaced and a fuse-style sub-panel that won’t pass current code. We budget for these before we cut, not after.
- Santa Ana wind complications: Monrovia sits at the mouth of Monrovia Canyon, and Santa Ana events come screaming down the foothills. Tile grout and exterior-adjacent waterproofing work dries too fast in those conditions, causing bond failures. We schedule around Red Flag days and use wet-cure protocols on the foothill side that you’d rarely need in Arcadia.
- Differential settlement on cut-and-fill lots: The hillside tier above Foothill Boulevard has a lot of mid-century and custom homes built on engineered fill. Bathroom floors there can settle unevenly, which cracks tile and separates shower pans. We check slopes and joist deflection before we set anything in mortar.
Pricing for Bathroom Remodeling in Monrovia, CA
Here are the real numbers for Monrovia’s market, not a national average that means nothing to you.
| Project | Typical Range in Monrovia |
|---|---|
| Bathroom Remodel | $9,000 - $28,000 |
| Small Bathroom Remodel | $5,000 - $12,000 |
| Walk-In Shower Installation | $4,500 - $12,000 |
| Tub-to-Shower Conversion | $3,500 - $10,000 |
| Shower Replacement | $3,000 - $8,500 |
| Bathroom Vanity Installation | $800 - $3,000 |
What moves the number in Monrovia? A master bath with a double vanity, tile to the ceiling, and a frameless glass enclosure lands near the top of that range. A compact guest bath with a Sterling tub and basic subway tile lands near the bottom. Foothill jobs that trigger Chapter 7A requirements or debris-flow plan check will add engineering and plan check costs that flatland projects don’t carry. We give you the full price in writing before work begins, and every change comes as a written change order. Call (877) 610-1318 for a free estimate.
We Also Serve Cities Near Monrovia
Barrett & Sons Construction serves Monrovia and the surrounding neighborhoods, and we regularly work in Mayflower Village, Duarte, Arcadia, and Sierra Madre. If your home is a few blocks over the line from Monrovia proper, give us a call anyway. No trip charge inside the county, and the same written pricing rules 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 - Bathroom Remodeling in Monrovia
If your project stays entirely inside the building envelope and doesn’t touch an exterior wall, window, or exterior vent, then Chapter 7A fire-resistant requirements generally do not apply. But the moment the scope includes relocating a bathroom window, adding an exhaust vent through an exterior wall, or replacing exterior siding, the city of Monrovia’s plan reviewer can require ignition-resistant materials and ember-resistant vents. This applies to homes in the Very High Fire Hazard Severity Zone, which includes the northern foothill neighborhoods in ZIP 91016. We check the requirement for you before you spend a dollar on plans. Call (877) 610-1318 to talk it through.
Most newer Monrovia HOAs require architectural review approval before you change plumbing locations, move a fixture, or alter visible exterior penetrations like bathroom windows or vent hoods. Some also restrict the hours when noisy demolition can happen, and a few require licensed contractors with proof of insurance on file. We handle HOA submittals as part of our bathroom remodel service. The paper trail keeps your project from stalling after demo day.
Yes, in most cases a tub-to-shower conversion does not trigger a full seismic retrofit. But if the project requires opening up more than a limited section of wall or floor, the city may ask you to correct some of the more immediately life-safety issues they uncover, like rotted mudsills or missing anchor bolts. We have done this conversion on dozens of pre-war bungalows in Monrovia’s flatland neighborhoods, and we usually manage to keep the retrofit scope limited to whatever the inspector actually flags. The key is knowing what to expect before you file the permit, not after.
For hillside lots north of Foothill Boulevard, moving a bathroom’s plumbing typically adds an extra week or two of plan check. The city’s legacy debris-flow drainage compliance requirement, which dates back to the post-Station Fire sediment events that came out of Monrovia Canyon, adds a review layer that flatland projects in the same city don’t face. Some jobs also require a soils engineer letter. We schedule that review time into the project calendar up front, so you don’t pay for a surprise delay later. Call (877) 610-1318 and we’ll walk you through how it applies to your specific address.
The foothill microclimate near Monrovia Canyon runs measurably hotter and drier than the flat valley floor, especially when Santa Ana winds push downhill air through the canyon. That kind of heat and wind strips moisture out of fresh concrete far too fast, which causes surface cracking and a weak bond for the tile bed. Wet-curing slows the moisture loss and gives the slab proper compressive strength. We use it on hillside bathroom subfloors in Monrovia and recommend any contractor doing work above Foothill Boulevard do the same.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Monrovia since 1998.







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