Fast, Reliable Bathroom Remodeling Across Laguna Hills
A full bathroom remodel in Laguna Hills typically runs $18,000 to $42,000, with hall baths landing on the lower end and primary suites with custom tile and curbless showers at the top. If you’re in a 1960s to 80s tract home near Moulton Parkway or Alicia Parkway, you’re looking at a 4 to 8 week timeline once permits clear. Call (833) 589-8273 for a free, line-item estimate from a team that knows how Laguna Hills hillsides affect bathroom work.
We’re Bathroom Remodeling specialists for Costa Mesa ADU Builders, and we’ve spent enough time in 92653 and 92654 to know what your house was built with, where it starts to fail, and what the city inspector will flag before you even schedule the rough-in inspection.
Why Costa Mesa ADU Builders Is Laguna Hills’s Preferred Bathroom Remodeling Company
Laguna Hills isn’t Irvine, and the difference matters when you’re opening up a bathroom wall. Most homes here went in between 1965 and 1985, framed with old-growth Douglas fir, finished in stucco, and set on lots that slope toward greenbelts or canyon edges. That combination means bathroom remodels in this city run headfirst into things flat-lot contractors never see: slab-edge moisture migration, cast-iron drains that have quietly rotted at the soil line, and venting runs that dead-end because a second-story addition from the 90s covered the original roof penetration.
Our reputation in Laguna Hills comes from doing the unglamorous stuff right. We pull permits, we call out the drainage problems before demolition starts, and we don’t pretend a $12,000 surface refresh will fix what a sloped lot is doing to your subfloor. Homeowners here tend to be the kind of people who read their CC&Rs, understand their HOA overlay, and want the quote that won’t change mid-project. That’s how we work.
Led by Nate Calloway, our team has done bathroom remodels in Laguna Hills for long enough to know which inspectors want to see the waterproofing membrane before the tile goes up, and which neighborhoods trigger additional fire-safety review because of canyon adjacency. That local familiarity is why we can give you a realistic start date and a realistic timeline instead of a handshake and a hope.
Our Bathroom Remodeling Services in Laguna Hills
Garage Conversion Bathroom Rough-In
A lot of Laguna Hills homeowners are converting attached garages into living space, and that almost always means a new full bath or three-quarter bath where the slab was never plumbed for it. We handle the rough-in from the existing sewer lateral, install the under-slab ABS waste lines, and slope the drain properly for a hillside lot. Expect this phase to add $8,000 to $14,000 to the project, including the trenching, backfill, and first inspection.
Second-Story Addition Bathroom Framing
If your Laguna Hills home is getting a second story, the bathroom above rides on engineered joists tied into the existing wall line. We frame for the fixture load, run supply and vent stacks through the chases, and make sure the subfloor deflection rating can handle a tile shower without cracking grout or popping waterproofing. Homes off Paseo de Valencia with steeper pitch need more structural retrofit work than the flatter tracts near Lake Forest Drive.
Hillside Drainage and Waterproofing
The single most skipped step in Laguna Hills bathroom remodels is the drainage assessment. On sloped lots, a shower pan that looks fine for a year can quietly migrate water toward the downhill slab edge, and by the time you see the baseboard swelling, the damage is in the wall cavity. We surface waterproof before tile with Laticrete Hydro Ban or Schluter Kerdi, depending on the substrate, and we tie the bathroom into your existing foundation drain where one exists. If it doesn’t, we address that first.
Full Bathroom Remodel
From the studs out: new subfloor, mold-resistant drywall, custom tile, curbless shower options, new ventilation, new fixtures, new lighting, and a final that passes inspection the first time. In Laguna Hills, a hall bath remodel runs $16,000 to $26,000. A primary bath with a larger footprint, custom cabinetry, and a curbless shower runs $28,000 to $42,000. We provide written line-item quotes so you can see exactly what the plumbing stack replacement costs versus the vanity upgrade.
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 Laguna Hills
We work with fixtures and systems from Kohler, Delta, Moen, and Toto, and we stock common replacement parts locally so a warranty call doesn’t leave you waiting two weeks on a back-ordered cartridge. For prefab and ADU-adjacent bathroom work in Laguna Hills, we also have working knowledge of Mighty Buildings and Boxabl enclosures, which matters when a garage conversion bathroom needs to tie into a panelized wall system rather than a traditional stud frame. And for exterior-facing bathroom gable walls or powder rooms added to accessory structures, Tuff Shed framing often shows up in Laguna Hills backyards, so we’re familiar with how to flash and waterproof those transitions.
Common Bathroom Remodeling Problems We See in Laguna Hills Homes
- Corroded cast-iron drains at the slab line. In homes built between 1965 and 1985, the original cast-iron waste line under the slab is often rusted through or nearly so. We see it constantly in neighborhoods west of the 5. You won’t know until the shower is out and the concrete is open. Replacement with ABS is code-compliant and dramatically reduces the chance of a sewer smell or a slab leak later.
- Moisture intrusion at the downhill slab edge. Laguna Hills lots with a visible grade toward a greenbelt or canyon edge move water in a way flat-lot homes never experience. The fix is often a combination of better exterior grading, a foundation drain if none exists, and a fully waterproofed shower assembly. Skip this and the problem returns in two years.
- Undersized ventilation on interior baths. Older Laguna Hills floor plans often have a hall bath with no window or a window that doesn’t meet today’s egress standard. Without a properly sized exhaust fan, warm, dry summers followed by occasional heavy rains create a moisture cycle that feeds mold behind wallpaper. We install Panasonic WhisperGreen fans tied to humidistats so the fan runs when it needs to, not when someone remembers to flip the switch.
- Fire-resistant detailing near canyon edges. Homes backing to open space or the canyon edges of Laguna Hills are subject to wildland-urban interface code requirements. That means bathroom vent terminations need ember-resistant screening and sometimes specific fire-rated wall assemblies. It’s a small detail that causes big permit delays if it’s not in the plans.
Pricing for Bathroom Remodeling in Laguna Hills, CA
Here’s what we’re seeing in Laguna Hills right now:
- Hall bath remodel (standard 5’x8′ footprint): $16,000 – $24,000
- Primary bath remodel (custom tile, curbless shower): $28,000 – $42,000
- Garage conversion bathroom rough-in only: $8,000 – $14,000
- Hillside drainage upgrade added to any bath remodel: $3,500 – $7,500
- Cast-iron drain replacement under slab: $4,000 – $9,000 depending on run length and slab access
These numbers reflect Laguna Hills specifically. The drainage and slope work pushes cost above what you’d pay for the same project in flat parts of Irvine or Lake Forest. We’ll give you a written line-item quote before any work starts. Call (833) 589-8273 for a free estimate.
We Also Serve Cities Near Laguna Hills
We regularly handle bathroom remodels in Laguna Woods, Lake Forest, Mission Viejo, and Coto De Caza. The same team, the same line-item quoting, and the same familiarity with south Orange County’s hillside housing stock. If you’re looking for Bathroom Remodeling in Laguna Hills or a neighboring city, call and we’ll schedule a walk-through.
Serving Laguna Hills, CA — Our Local Coverage Area
We’re based in the Laguna Hills 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 Laguna Hills
Yes, any remodel that moves plumbing, opens walls to relocate fixtures, or changes the waterproofing assembly requires a permit in Laguna Hills. Even a same-footprint hall bath remodel needs a plumbing permit and a building permit for the shower pan and waterproofing. Working without one can complicate a future insurance claim and will surface during a resale inspection. Call (833) 589-8273 and we’ll tell you exactly which permits your scope triggers.
We build to a complete waterproofing assembly, not just a pan liner. That means a surface-applied membrane like Schluter Kerdi or Laticrete Hydro Ban across the shower walls and floor, with integrated corners and banding at the curb, plus a bonded drain assembly. This exceeds the minimum code standard in Laguna Hills that only requires a pan liner, and it’s the difference between a shower that leaks in a canyon-edge wind-driven rain event and one that stays dry. It’s also the kind of detail an insurance adjuster notices.
Sloped lots cost more. For a typical Laguna Hills hillside home, expect to add $3,500 to $7,500 for drainage and waterproofing work you wouldn’t need on a flat lot. That includes assessing the grade at the slab edge, possibly adding a foundation drain or a surface drain to intercept water moving downhill, and making sure the shower assembly sheds water away from the structure rather than into it. We’ll show you the topography and what we’re addressing in your written quote.
Yes and we encourage it. We document the waterproofing, the drainage upgrades, and the ventilation work with photos and a written record of materials used. In Laguna Hills, where water claims and fire-adjacent code questions are both live issues, an adjuster reviewing a claim benefits from seeing that a contractor documented the work. We’ve had clients in the Alicia Parkway area tell us their adjuster noted the waterproofing and vent documentation favorably during a claim review.
Code requires either an operable window meeting egress standards or an exhaust fan vented to the exterior, not the attic. In Laguna Hills homes with canyon-edge or greenbelt exposure, the vent termination also needs ember-resistant screening under the city’s wildland-urban interface code. We install fans from Panasonic and vent them through the roof or sidewall with the right termination for your zone. A humidistat-controlled fan is the best defense against mold in our warm, dry climate.
Schedule Your Free Bathroom Remodeling Estimate in Laguna Hills
If you’re planning a bathroom remodel in Laguna Hills, start with a walk-through and a written line-item quote. We’ll look at your slab, your slope, your existing drain lines, and your ventilation. We’ll tell you what’s mandatory, what’s optional, and what your insurance company will want to see. Call Nate and the team at (833) 589-8273 to schedule your free estimate.
Written by Nate Calloway, Owner at Costa Mesa ADU Builders, serving Laguna Hills and surrounding Orange County.