Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Castaic
A full bathroom remodel in Castaic typically runs $9,000 to $28,000, with walk-in shower installations between $4,500 and $12,000 and tub-to-shower conversions from $3,500 to $10,000. Those numbers include the permits, the inspections, and the written change orders that a lot of contractors leave out until the job is already open. If you live in Castaic, call us at (877) 610-1318 and we’ll give you a line-item estimate before anything gets torn out.
Castaic isn’t Valencia. The hillside lots off Lake Hughes Road, the 1990s tract homes on cut-and-fill pads, the Very High Fire Hazard Severity Zone requirements that most flatland contractors ignore: all of it changes how a bathroom remodel has to be done here. Our crews work these neighborhoods regularly, and we know what the county inspector is going to look for before we open the first wall.
Why Barrett & Sons Construction Is Castaic’s Preferred Bathroom Remodeling Company
We’ve been at this since 1998, owner-operated the whole time. Tom Barrett’s name, address, and license number are printed on every estimate and every contract. When you call (877) 610-1318, a live person answers, not an out-of-state call center.
What does that mean for a Castaic homeowner? It means you’ll never get a different crew than the one you met. Tom’s sons run the crews. When we scope a bathroom remodel on a hillside lot above Lake Hughes Road, we’re the ones walking the slab, checking the fill, and looking at the exterior penetrations. We don’t dispatch strangers. We show up.
Every bathroom remodel we do in Castaic comes with a written 90-Day Done Right Promise on the contract. If something’s not right, Tom comes back. One call. That’s it. We also pull permits and get inspections signed on every eligible job, because the last contractor most Castaic homeowners used told them permits were optional.
Our Bathroom Remodeling Services in Castaic
Full Bathroom Remodeling
A full bathroom remodel in Castaic means gutting the space, addressing any subfloor or framing issues, relocating plumbing if needed, and rebuilding with new tile, fixtures, vanity, and lighting. On 1990s Castaic homes, that almost always includes checking the wall cavities for settlement cracking at window and door corners. We find it more often than not on the steeper streets above the 5. A full remodel here runs $9,000-$28,000, depending on size and finish level.

Walk-In Showers & Shower Remodeling
Walk-in showers are the most requested upgrade we do in Castaic, and for good reason. The 1990s tract homes around here were built with fiberglass tub-shower combos that feel cramped and collect hard-water deposits from the local supply. We install framed and frameless walk-in showers with reinforced headers and proper moisture barriers. A walk-in shower installation in Castaic runs $4,500-$12,000.

Tub-to-Shower Conversion
Tub-to-shower conversion is one of the best returns for Castaic homeowners who want a safer, more open bathroom without moving walls. We remove the old tub, inspect the subfloor, and build a curb or curbless shower with code-compliant waterproofing. In Castaic, this job runs $3,500-$10,000, and the permit is included in that number. We never ask you to skip it.

Vanities, Tile & Fixtures
Whether it’s a new double vanity for the master bath off Hasley Canyon Road or tile work in a powder room near the lagoon, we install premium brands you can look up: Kohler fixtures, Schluter waterproofing systems, and Cambria or Corian tops. A bathroom vanity installation in Castaic runs $800-$3,000 for the unit and install, depending on size and plumbing changes.
This page is part of our broader Bathroom Remodeling work across the Santa Clarita Valley. For homeowners in and around the 91384 and 91310 zip codes, our local crews service Bathroom Remodeling in Castaic directly.

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 Castaic
We install materials with names you can verify before you sign. Kohler and American Standard for fixtures, Schluter for waterproofing, Cambria for countertop surfaces. We don’t load mystery brands off a van and hope they hold up. For Castaic homes, we also stock common replacement parts locally so we’re not waiting on a distribution center in another state. If a valve fails under our 90-Day Done Right Promise, we’re back on site with the part, not making phone calls about it.
Common Bathroom Remodeling Problems We See in Castaic Homes
- Fill settlement cracking: The hillside lots around Castaic were graded decades ago, and the fill material under many 1990s slabs has kept settling. We regularly find diagonal cracks at window and door corners on the downhill side, and those cracks will telegraph right through new tile and glass if the subfloor isn’t checked first.
- Skipped VHFHSZ penetration checks: Moving a bathroom exhaust fan or window in Castaic means touching an exterior wall. State and county code requires that any new penetration meet ember-resistant and wind-load standards. A contractor who skips this leaves you with a fire vulnerability that can void an insurance claim.
- Santa Ana wind flex: Fall gusts through the I-5 corridor hit Castaic hard. If a remodeler frames and tiles without accounting for that, you’ll see cracked grout and shifted rough-in within a season or two.
- Moisture trapped behind old plastic surrounds: Those 1990s fiberglass tub surrounds were installed over drywall with no moisture barrier in a lot of Castaic homes. We’ve pulled them off to find mold and spongy studs hiding behind what looked fine from the outside.
Pricing for Bathroom Remodeling in Castaic, CA
Here’s what our Castaic customers actually pay for bathroom work. These ranges reflect the local market, the permit requirements, and the condition of the housing stock we see on most jobs:
| Service | Price Range in Castaic |
|---|---|
| Full 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 the number is the condition of the subfloor, whether we’re relocating plumbing, the finish level you choose, and what we find when the old materials come out. But you’ll know that number before work begins, not after. We scope everything in writing. Allowances in writing. Change orders in writing. Call (877) 610-1318 for a free estimate and we’ll walk the space with you.
We Also Serve Cities Near Castaic
Castaic is home turf for us, but we also take bathroom remodels in Valencia, Santa Clarita, Stevenson Ranch, and Chatsworth. The fire-zone requirements get lighter as you move south into the flatter parts of the valley, but the permit discipline doesn’t change. Same crew, same written pricing, same 90-Day Done Right Promise.
Serving Castaic, CA - Our Local Coverage Area
We’re based in the Castaic 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 Castaic
Yes, you usually do. Even interior-only remodels in Castaic often involve moving a plumbing vent, relocating an exhaust fan, or changing a window in a wall that faces the exterior. Any new penetration in that exterior envelope has to meet Very High Fire Hazard Severity Zone standards for ember resistance and wind-load. We check every affected wall before we open it. If your contractor doesn’t mention this, ask why. Call (877) 610-1318 and we’ll walk you through what applies to your specific home.
Look for diagonal cracks running from the bottom corners of windows and doors, especially on the downhill side of your lot. Sticking doors or slight slopes in the floor are also signs. On a 1990s stucco tract home off Lake Hughes Road, our crew opened a bathroom wall for a tub-to-shower conversion and found diagonal cracking at the window corner from differential settlement on the cut-and-fill lot. We scoped the job to include a structural evaluation of the subfloor and load-bearing wall before any rough-in, then installed a Kohler walk-in shower with a reinforced header and moisture barrier, pulling permits and getting inspection sign-off before closing the wall. If any of that sounds like your house, get the slab checked before you tile over it.
Any new exterior wall penetration in Castaic needs to be rated for the wind zone mapped for this part of Los Angeles County, which generally means a fan assembly and wall cap designed for high-wind exposure and tested to resist ember intrusion. The exact rating depends on your lot’s position and whether you’re in a wind-prone corridor along the I-5. We spec the right assembly as part of the permit package. Call (877) 610-1318 for an exact recommendation on your home.
It can, yes. Insurance carriers in fire-prone areas like Castaic increasingly ask for documentation that all exterior penetrations meet current ember-resistant standards. A permitted remodel with signed inspections gives you exactly that paper trail. The permit inspector works for you, not for me. That’s why we like having him on the job. If you’re remodeling a bathroom that touches an exterior wall, doing it to code with permits is one of the few ways to actively protect your claim history before a fire ever happens.
Not meaningfully. A tub-to-shower conversion in Castaic runs $3,500-$10,000, about the same as nearby cities. The fire-zone requirements mostly affect the permit documentation, the exterior penetration work, and the inspection schedule. The cost difference on an interior conversion is typically a few hundred dollars at most. What costs more is hiring someone who skips those steps and then you have to pay a second contractor to fix it. Call (877) 610-1318 for an exact quote. Estimates are free.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Castaic since 1998.







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