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Oldcastle Bathroom Remodeling: The Woodland Hills Owner’s Guide
If the Oldcastle bathroom in your Woodland Hills home is showing its age, the cost to remodel it typically lands between $9,000 and $28,000, depending on the scope and what’s behind the walls. We stock and install Oldcastle-compatible fixtures, and we can usually give you a written price within a few days of walking the space. Most Woodland Hills homeowners call us when they notice cracking grout, a vanity that no longer closes square, or water staining where the tub meets the tile. Oldcastle built solid bathroom packages for its residential projects, and after 15 or 20 years in the Valley’s dry heat, the failures are usually predictable: seal failures, shifting substrate, and outdated fixture fittings that newer valves don’t accept without an adapter plate.
We’re an independent contractor, not affiliated with Oldcastle, and we carry the common Oldcastle-spec trim, valve adapters, and replacement hardware on our trucks. That means less waiting when we open the wall and find a 1990s rough-in that doesn’t match the modern fixture you picked out.
Which Oldcastle Models This Applies To
Oldcastle’s residential bathroom packages came through several different production runs, and the parts compatibility differs between them. The early 2000s “Builder Series” tub surrounds and vanities used a standard 60-inch alcove tub with a 30-inch-high apron, and the rough-in valves were typically brass units set at 32 inches off the slab. Later runs, sold through tract builders in the west Valley from around 2008 onward, moved to a 34-inch rough-in height and a lower-flow cartridge. If you’re not sure which you have, look for the stamp on the underside of the vanity drawer or the casting mark behind the tub apron. Better yet, pull the trim plate off the shower valve and take a photo of the cartridge. That tells us more than the model name ever will.
One gotcha we see in Woodland Hills specifically: homes built in the Walnut Acres and Carlton Terrace tracts often share Oldcastle package model numbers but were plumbed with different valve bodies depending on which phase of construction they were in. This matters when you’re trying to reuse a tub and just replace the valve trim. Sometimes the cartridge seats are too worn to accept a new trim kit, and the wall has to be opened anyway. We’ll tell you that before you spend money on a trim kit that won’t seat.
On the OEM versus aftermarket question: for Oldcastle-spec replacement parts, we lean OEM for anything that holds water or gas, like cartridges and valve bodies. For cosmetic pieces like escutcheon plates, towel bar mounts, and drawer slides, a quality aftermarket part from a name like Moen or KOHLER works as well or better. We also stock KraftMaid, Cambria, and Silestone parts for bathrooms done with those brands.
Styles & brands we work with
Signs Your Oldcastle Bathroom Remodeling Is Failing
- Grout cracking along the tub line or shower pan edges. This is the most common early warning in Woodland Hills, where temperature swings between hot days and cool nights cause slight expansion and contraction. Once grout cracks, water gets behind the tile and starts eating the substrate. Patch it and you buy a few months; fix the moisture path and you buy decades.
- Vanity doors that hang crooked or drawers that stick. Oldcastle builder-grade vanities used particle-core boxes with wood veneer faces. After years of bathroom humidity, the core swells and the hinge screws strip out. A quick fix is larger screws, but that’s a bandage on a failing box.
- Shower valve handle that turns stiff or wobbles. The cartridge is wearing down. In Woodland Hills’ hard water, mineral buildup accelerates this. If you have to crank the handle to shut off the drip, the cartridge is already on borrowed time and you risk snapping the stem inside the wall.
- Water staining on the ceiling below the bathroom. This isn’t a cosmetic problem. A leak from a tub drain, shower pan, or supply line has already compromised the subfloor. By the time the stain shows, the repair is bigger than the original fixture.
- Tile that sounds hollow when tapped. Hollow-sounding tile means the thinset bond failed. Water is likely moving underneath. Left alone, tile will start popping loose, and the pan or surround loses its waterproof envelope.
See the difference
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After
Before
After
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AfterReplacement Cost & What’s Included
In Woodland Hills, a full Oldcastle bathroom remodel runs $9,000 to $28,000. A small bathroom with a standard tub and one vanity falls at the lower end. A larger primary bath with a walk-in shower, dual vanities, and relocated plumbing lands in the upper range. Here’s how that breaks down for the work we do:
- Small bathroom remodel: $5,000 – $12,000
- Full bathroom remodel: $9,000 – $28,000
- Walk-in shower installation: $4,500 – $12,000
- Tub-to-shower conversion: $3,500 – $10,000
- Bathroom vanity installation: $800 – $3,000
Every quote we give includes the demolition, the plumbing work, the tile, the fixtures, the finish trim, and the cleanup. We put it in writing before any work starts, and we don’t surprise you with a bigger final bill. If we open the wall and find rot or bad plumbing, we stop, show you what we found, and give you a revised written price before we go further. The work itself is covered by our 365-Day Done Right Promise: if something isn’t right within a year of completion, we fix it at no cost to you.
DIY or Call Us?
There are small Oldcastle bathroom fixes you can handle on your own. Replacing a showerhead, swapping a towel bar, or installing a new vanity topper are all weekend jobs if you have basic tools and patience. Anything that involves cutting into the wall, moving a drain, or disturbing the shower pan is where DIY goes sideways. One wrong cut on a tub surround and you’ve compromised the waterproofing. One bad solder joint behind the wall and you’re paying for a ceiling repair downstairs. If the job involves high-tension springs, live plumbing lines, or tile demolition that could conceal asbestos in homes built before the 1980s, call us at (831) 290-6866. The estimate is free, and you’ll know what it costs before you decide anything.
FAQs
A cosmetic refresh with new fixtures and a vanity top typically takes 4 to 7 working days, while a full gut-and-replace with a tiled shower runs 2 to 3 weeks. The timeline depends on what we find behind the walls and whether we’re moving plumbing. Call (831) 290-6866 and we’ll give you a realistic schedule for your specific bathroom.
Yes, and we’ll be honest about whether it’s worth it. If the shower valve is the only problem, we can often replace the cartridge and trim without opening the wall. If the substrate is wet or the tile bond is failing across a large area, a patch job won’t last. We’ll show you the condition and let you decide.
We keep common Oldcastle-spec valve cartridges, trim adapter plates, and mounting hardware on the truck, along with matching drain assemblies and escutcheon kits. For less common parts, we source OEM through our supply partners and usually have them on-site within a few days.
Our 365-Day Done Right Promise covers workmanship and installation for a full year from the completion date. If a tile cracks, a drain leaks, or a vanity door pulls loose in that time, we come back and fix it at no charge. Fixture and material warranties from the manufacturers apply separately, and we’ll register every one of them for you.
If your Oldcastle bathroom needs work, you deserve a straight answer about what it will cost and who will be walking through your door. We’re Mason Remodeling Co Woodland Hills, and we’ve been doing exactly that since 2004. Every technician who arrives is background-checked, identity-verified, and introduced to you by name and photo before the visit under our Threshold Standard process. Call (831) 290-6866 for a free estimate, and you’ll get a written price before any work starts. Tell me what you need done. I’ll tell you what it takes and what it costs. Then we get to work.
Written by Isaac Pruett, Owner, Mason Remodeling Co – Woodland Hills, CA at Mason Remodeling Co Woodland Hills, serving Woodland Hills and nearby areas.
