Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Los Serranos
A full bathroom remodel in Los Serranos typically runs $9,000 to $28,000, depending on whether you’re updating a small guest bath near the Country Club or gutting a hillside master suite. Most projects take two to six weeks once permits clear and materials land. The number to call for a free, written estimate is (877) 610-1318.
We’re Barrett & Sons Construction, and we’ve been owner-operated since 1998. Tom Barrett’s name is on the truck, on the license, and on every contract. When you call about remodeling a bathroom in Los Serranos, you get a live person. Not a voicemail tree, not an out-of-state call center. A person who knows what opening up a 1960s ranch wall in the Chino Hills actually turns up.
Why Barrett & Sons Construction Is Los Serranos’s Preferred Bathroom Remodeling Company
Los Serranos isn’t flat Chino or grid-pattern Ontario. It’s hillside lots, clay soil, fire-zone regulations, and homes that range from 1920s country club cottages to 1990s tract builds. A contractor who quotes a bathroom remodel the same way for Los Serranos as they would for a flatland house ten miles west is going to miss something. Often that something is a WUI wall-opening requirement or a slab crack that turns a five-week job into a nine-week mess.
Our crews work in Los Serranos regularly. We know the inspectors check attic and sub-floor vents for the 1/16-inch corrosion-resistant mesh screen. We know the clay-heavy soil near the 91709 zip code moves enough between wet and dry seasons to crack a poorly prepared shower pan. That knowledge goes into the first bid, not the second change order. Our Bathroom Remodeling team treats every Los Serranos job as its own animal. Tom and his sons are on-site most days, not dispatching strangers from a regional office.
Every job we do includes permits pulled and inspections signed. The permit inspector works for you, not for me, as Tom says. That’s why we like him on the job. Our 90-Day Done Right Promise is written on every contract: if it’s not done right, one call brings Tom back. We also offer free second opinions on any written estimate and no trip charge inside the county, including all of Los Serranos.
Our Bathroom Remodeling Services in Los Serranos
Full Bathroom Remodeling
A complete bathroom remodel in Los Serranos means more than swapping tile and a vanity. On older homes near the Country Club, we’re usually dealing with undersized drain lines, original galvanized supply pipes, and wall cavities that haven’t been opened since the Eisenhower administration. We plan for that. We price for that. And when we open the wall and find something else, you get a written change order before we touch it. Not a phone call asking for more money, not a surprise on the final invoice.

Walk-In Showers & Shower Remodeling
Walk-in showers are the single most common remodel request we hear in Los Serranos, especially from homeowners in their 50s and 60s who want to stay in their hillside home rather than downsize. Curbless entry, solid blocking for grab bars, properly sloped pans, and waterproofing that survives both Santa Ana-driven temperature swings and clay-soil movement. We install the pan flat and level, but we prepare the subfloor knowing the ground under Los Serranos isn’t always still.

Tub-to-Shower Conversion
Converting a bathtub to a walk-in shower in Los Serranos runs $3,500 to $10,000, and it’s one of the fastest ways to make a 1970s bathroom usable for aging knees and hips. But it’s also a job that opens the wall. In a Los Serranos home, that triggers more than a drain swap. Older homes near the Los Serranos Country Club frequently have no blocking in the stud bays, corroded supply lines, and subfloors softened by years of slow shower-pan leaks. We write those allowances into the first contract so you’re not financing surprises.

Vanities, Tile & Fixtures
Vanity installation in Los Serranos generally runs $800 to $3,000 depending on size, counter material, and whether we’re moving plumbing. Tile work ranges with the tile itself, but a standard tub surround or shower wall tile job typically falls between $2,500 and $6,000. We recommend materials you can look up, not mystery brands off a van. If you pick a Cambria or KraftMaid product, we install what you selected, not a substitution.
We also handle small bathroom remodels in the $5,000 to $12,000 range for powder rooms and guest baths that need a refresh without a full gut.

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 Los Serranos
We don’t stock off-brand fixtures. When a Los Serranos homeowner picks a shower valve or a tub, we point to names like Kohler, Delta, Moen, and American Standard. For hardscape ties to bathroom access entries or adjoining patios, we carry Techo-Bloc and Cambridge Pavers for any exterior work that butts up against the remodel. If you want a specific finish or model, we order it, track it, and install it. Our 90-Day Done Right Promise covers the workmanship no matter whose fixture you choose.
Common Bathroom Remodeling Problems We See in Los Serranos Homes
- Missing WUI wall assemblies. Open an exterior bathroom wall in Los Serranos and the Chino Hills inspector will check for Class A ignition-resistant sheathing. Homes built before WUI codes were adopted rarely have it. We plan for the upgrade in the initial scope, not as a mid-job surprise.
- Rotted subfloors from shower-pan seepage. Mid-century cottages near the Country Club have had sixty or seventy years of slow leaks. By the time we pull a tub surround, the subfloor under it is often powder. We write subfloor replacement into the bid.
- Galvanized supply lines and no blocking. Stud bays in 1940s and 1950s Los Serranos homes frequently have no blocking for grab bars and original galvanized pipes that are more rust than pipe. That’s a real cost. We quote it before we cut.
- Clay-soil slab movement. The expansive clay in the Chino Hills heaves in wet winters and contracts in dry summers. A shower pan tiled directly over an underprepared slab will crack. We check slab condition before we promise a tile shower.
Pricing for Bathroom Remodeling in Los Serranos, CA
Here’s the honest money talk. A full bathroom remodel in Los Serranos runs $9,000 to $28,000. A small bathroom remodel runs $5,000 to $12,000. Walk-in shower installation runs $4,500 to $12,000. Tub-to-shower conversion runs $3,500 to $10,000. A new vanity runs $800 to $3,000 installed.
| Service | Los Serranos Price Range |
|---|---|
| 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 |
| Bathroom Vanity Installation | $800 - $3,000 |
What moves a Los Serranos bathroom remodel from $12,000 to $28,000? Wall openings that trigger WUI upgrades, slab leveling in the clay soil, rewiring a 1950s circuit, replacing cast-iron drain lines. If your home needs those, you want to know before the walls are open. That’s why we offer free estimates with line-item scopes and written allowances. Call (877) 610-1318 for a number you can take to the bank.
Opening Up an Old Los Serranos Home: What Actually Happens
When we open a bathroom wall in Los Serranos, we aren’t just swapping tile. We’re looking at seventy years of wiring, plumbing, and framing decisions made under codes that no longer exist. On a mid-century cottage near the Los Serranos Country Club, our crew pulled a fiberglass tub surround and found the 2×4 stud bays had no blocking, original 1940s galvanized supply lines, and a rotted subfloor from years of shower-pan seepage. We wrote a change order for the framing and subfloor, ran PEX and modern rough-in, and added the required WUI solid sheathing to the exterior wall before the inspector signed off. The extra cost was explicit and approved in writing before we lifted a tool. That’s how we handle every surprise: inspection first, allowances written into the contract, and any change priced and approved before work proceeds.
Los Serranos Is a Wildland-Urban Interface Zone. Your Bathroom Remodel Has to Account for That.
Los Serranos sits inside the Chino Hills Wildland-Urban Interface fire zone. That’s not a trivia fact. It’s a code reality that hits bathroom remodels in a way flatland Chino or Ontario crews never deal with. If your remodel opens an exterior wall, Title 24 WUI standards apply. Class A ignition-resistant sheathing. Ember-proof 1/16-inch mesh on any vent that penetrates the wall. The Chino Hills inspector specifically checks attic and sub-floor vents for that mesh, and it routinely fails out-of-area crews who installed standard builder-grade vents without checking the fire-zone designation. We build those requirements into the first bid. Not the change order that stalls your job for two weeks while re-inspection gets scheduled.
Why Clay Soil Under Los Serranos Makes Shower Pans Crack
The hillside lots around Los Serranos sit on expansive clay. Wet winters swell it. Dry summers shrink it. That movement is why we see newly tiled shower pans crack six months after a flat-rate crew tiled directly over an unprepared slab. Before we install any tile shower in Los Serranos, we check slab condition and plan the substrate accordingly. Sometimes that means a mud bed. Sometimes it means a full subfloor replacement. Either way, you know the cost before we spread the first bag of thinset.
We Also Serve Cities Near Los Serranos
Our crews regularly work in Bathroom Remodeling in Los Serranos and the surrounding foothill communities. We serve Chino Hills, Chino, Diamond Bar, and Yorba Linda with the same written-scope discipline, the same permit-first approach, and the same live-person phone answer. If you live near the Chino Hills border or off Grand Avenue, call (877) 610-1318 and Tom or one of his sons will meet you at the house.
Serving Los Serranos, CA - Our Local Coverage Area
We’re based in the Los Serranos 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 Los Serranos
Yes, if the remodel opens an exterior wall. Once that cavity is exposed, the inspector can require ignition-resistant sheathing and ember-proof vent mesh under Title 24 WUI standards. We include those upgrades in the initial scope for Los Serranos homes so the permit passes on the first inspection. Call (877) 610-1318 if you want a written breakdown before you commit.
It’s enforced on remodels that open the wall. The Chino Hills inspector checks for 1/16-inch corrosion-resistant mesh on any vent penetrating the exterior, including bathroom exhaust vents. Out-of-area crews miss this regularly. We stock the correct mesh and install it as standard on Los Serranos work.
Yes. A tub-to-shower conversion changes the drain, the valve, and the waterproofed wall assembly, which makes it a permit-eligible plumbing and building modification in Los Serranos. We pull the permit, schedule the inspection, and make sure the work passes before the wall is closed. A conversion typically runs $3,500 to $10,000 in Los Serranos depending on scope and finish.
We don’t tear out the whole foundation. We assess slab condition at the start, then prepare the shower pan area with the appropriate substrate, whether that’s a reinforced mud bed, an uncoupling membrane, or localized slab repair. The goal is to keep the tile shower from cracking when the clay moves. Call (877) 610-1318 for an inspection and a flat written quote.
Yes. Every scope, every allowance, every price change is written. We don’t do phone-call math. If the wall comes open and the stud bays need blocking or the drain lines need replacing, you get a line-item change order before we proceed. An allowance that isn’t on paper is a surprise waiting for a date, and we don’t date surprises.
Call Barrett & Sons Construction for Your Los Serranos Bathroom Remodel
Whether you’re planning a walk-in shower near the Country Club, a tub-to-shower conversion in a 1980s hillside tract home, or a full primary bath remodel with all the trims and tile, we’ll give you a price you can hold us to. Free estimate, written scope, permits pulled, and the 90-Day Done Right Promise on every job. Call (877) 610-1318 today. Tom Barrett answers the phone, and he’ll be at your house within the week.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Los Serranos since our founding in 1998.







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