Fast, Reliable Bathroom Remodeling Across Irvine
Bathroom remodeling in Irvine, CA typically costs $18,000 – $45,000 for a full gut-and-replace inside an existing home or ADU, with most projects running 6 – 10 weeks from first tear-out to final inspection. But Irvine has a wrinkle most contractors don’t warn you about until it’s too late: the village HOA architectural review that runs on a separate calendar from the city permit. We know those committees. We know what they reject and what slips through. Call (866) 251-7857 and we’ll tell you straight what your timeline actually looks like in Woodbridge, Northwood, or Great Park.
Why Foundry ADU Builders Is Irvine’s Preferred Bathroom Remodeling Company
Foundry ADU Builders works the Irvine market differently because we built our reputation inside its HOA-governed villages. Rob Cafferty runs our crews with a simple rule: if the architectural committee will see it from the street, we spec it to pass before we order it. Homeowners in Turtle Rock and Westpark call us after other contractors get their permits yanked at design review. We pre-clear the visible stuff: fixture finishes, window glazing, exterior vent hoods, even exterior tile color if the bathroom wall faces a street or common area.
We are not a general contractor dabbling in ADU interiors. Our company exists to build accessory dwelling units and finish the spaces inside them. That means when we remodel an ADU bathroom in an Irvine village, we already understand the underlying structure, the slab conditions, the venting paths, and the HOA restrictions tied to the unit. One relationship from foundation to finished tile.
Our response time to Irvine from our Brea office is typically same-week for estimates. For homeowners in 92602, 92603, 92697, and 92710, we schedule walk-throughs around your HOA’s vendor access hours rather than fighting them.
Our Bathroom Remodeling Services in Irvine
HOA-Compliant Fixture and Finish Selection
This is the service that saves Irvine homeowners from six-week delays. We pull the CC&R finish requirements for your specific village before we order a single fixture. If your Woodbridge main house has matte-black trim and clear-glazed windows, your ADU bathroom gets matte-black trim and compatible glazing, not whatever brushed-nickel set was on sale. We build a spec sheet the architectural committee can approve on first pass.

Curbless Shower and Linear Drain Installation
Curbless showers are popular in Irvine ADUs because they make small bathroom footprints feel larger and improve accessibility for aging-in-place parents in multigenerational units. But they demand precise slope work on slab-on-grade floors, which most 1960s – 2000s Irvine tract homes have. We set linear drains at the correct elevation before tile ever goes down. Done wrong, a curbless shower in a Great Park ADU turns into a puddle that never drains.

Moisture Barrier and Slab-on-Grade Waterproofing
Irvine’s older tract homes sit on concrete slabs, many without a proper vapor barrier beneath them. During a bathroom remodel, that moisture migrates up through the slab and destroys tile adhesion, especially in garage conversions where the slab was never intended for living space. We install substrate waterproofing designed for exactly this condition. In homes closer to Bommer Canyon or Turtle Rock’s open-space edges, we also detail for the dry Santa Ana wind conditions that pull moisture out of curing materials too fast.

ADU Bathroom Build-Outs for New Units
When we’re building the ADU itself, whether it’s a Tuff Shed conversion or a Plant Prefab unit, we carry the bathroom from rough-in to finished tile under the same contract. That means the HOA submittal for the bathroom finishes is coordinated with the ADU’s exterior review, not bolted on afterward. One application package, one approval calendar, one crew.

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 Irvine
Irvine HOAs care about materials that last and look consistent across the village. That’s why we use James Hardie backer board as our standard substrate in wet areas: it resists the moisture issues common in slab-on-grade Irvine construction and gives tile a stable base for decades. For ADU bathrooms, we regularly spec fixtures and finishes compatible with Abodu and Plant Prefab unit interiors, so the bathroom doesn’t look like a patch job against the rest of the unit. If you’re converting a Tuff Shed into a livable ADU, we know what needs to happen inside those walls to pass Irvine’s building inspection, not just look good.
Common Bathroom Remodeling Problems We See in Irvine Homes
- HOA rejection after city permit approval. A contractor submits to the City of Irvine first, gets the permit, then the village architectural committee rejects the exterior vent or window spec. The permit is now useless. We pre-clear with the HOA before the city submittal in every Irvine village we work.
- Fixture finish mismatches triggering resubmittal. Standard chrome fixtures and generic white tile get flagged when CC&Rs require matching the main house’s original finishes. A six-week delay over a shower trim kit. We catch this in week one, not month two.
- Slab moisture destroying tile adhesion. Irvine homes built before about 2000 often lack a vapor barrier under the slab. Water migrates up, tile pops, mold grows behind shower walls. Garage-conversion ADUs are the worst offenders. We test and waterproof before any finish goes in.
- Second-story ADU bathroom venting conflicts. In villages like Northwood and Woodbridge, second-story ADUs have height and roof-tile matching rules. Bathroom exhaust vents that penetrate the roof can trigger design-review rejection if the vent cap doesn’t match the roof material. We spec the right cap the first time.
Pricing for Bathroom Remodeling in Irvine, CA
A hall-bath or ADU bathroom gut remodel in Irvine runs $18,000 – $28,000 for a standard 5×8 footprint with mid-range tile, a new vanity, and a tub-to-shower conversion. A primary bath with a curbless shower, linear drain, and custom glass runs $30,000 – $45,000. HOA-mandated finish matching adds $800 – $2,500 depending on the required fixture brands and tile grades. Garage-conversion ADU bathrooms run higher per square foot because of the slab waterproofing and venting work, typically $22,000 – $35,000 for a full build-out. Every estimate is line-item, free, and includes the HOA submittal work. Call (866) 251-7857 and Rob Cafferty will walk your specific village’s numbers with you.
We Also Serve Cities Near Irvine
Foundry’s Bathroom Remodeling work extends from Irvine into Tustin, Santa Ana, North Tustin, and Costa Mesa. Each city has its own permit rhythm and design-review culture, and we adjust our process accordingly. If your property sits near the Irvine border in any of these communities, the HOA dynamics are often similar, and our approach transfers directly. For a deeper look at what we do across Bathroom Remodeling in Irvine, get in touch and we’ll talk specifics for your address.
Serving Irvine, CA — Our Local Coverage Area
We’re based in the Irvine 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 Irvine
Yes. The City of Irvine requires a building permit for any bathroom remodel that alters plumbing, electrical, or structural elements, even inside an existing ADU. A cosmetic refresh like swapping a vanity or painting might not need one, but if you’re moving a drain, adding a shower, or opening walls, you need a permit. We file all City of Irvine permits as part of our scope, and we sequence the HOA approval ahead of the city submittal so you’re not holding an unbuildable permit. Call (866) 251-7857 and we’ll tell you whether your specific scope triggers a permit requirement.
Four to eight weeks is typical, depending on the village. Woodbridge and Turtle Rock committees meet on fixed schedules, and a missed submittal deadline pushes you to the next cycle. We’ve seen Northwood approvals land faster when the packet is complete on first pass, which is exactly why we pre-clear every finish before we submit. The HOA calendar runs independently of the city permit clock, and a smart schedule accounts for both from day one.
Not if the bathroom is visible from the street or a common area. Irvine village CC&Rs frequently require fixture finishes and exterior tile colors to match or complement the main house. Inside a fully enclosed, street-invisible bathroom you have far more latitude. We pull your village’s finish requirements and flag every visible element before you order materials. Avoiding a resubmittal is the whole game here.
Expect slab moisture migration. Irvine garage slabs were poured for cars, not living space, and most lack a vapor barrier. That moisture comes up through the concrete and breaks the bond between tile and substrate. We install a waterproofing layer designed for slab-on-grade conditions, and we do it before any finish materials go in. Homes near Bommer Canyon and other open-space edges also contend with dry Santa Ana conditions that affect curing, so we adjust material schedules accordingly.
Either party can submit, but we recommend the builder handle it. We’ve done this in Irvine’s villages enough times to know what each committee flags. When we submit, we include the finish schedule, window specs, vent cap details, and color samples in the exact format the committee expects. Homeowner submissions often get sent back for missing documentation, which restarts the 4-8 week clock. We file it, track it, and schedule the work around the approval date. For an exact quote on your project in Irvine, call (866) 251-7857. The estimate is free and includes the HOA submittal scope.
Written by Rob Cafferty, Owner at Foundry ADU Builders, serving Irvine and Orange County from our Brea office.