Fast, Reliable Bathroom Remodeling Across Irvine
Bathroom remodeling in Irvine typically costs $8,500 to $22,000 for a full guest bath and $18,000 to $45,000 for a master bath, with most projects taking three to six weeks once permits and HOA approvals clear. We’re Cottage ADU Builders, and we’ve worked inside Irvine’s villages long enough to know that the real timeline here isn’t set by demolition or tile work. It’s set by the architectural review board at the front of your community. If you’re planning a bathroom remodel anywhere in Irvine, call us at (866) 808-7312. We’ll walk you through what your specific HOA will ask for before you spend a dollar on materials.
Why Cottage ADU Builders Is Irvine’s Preferred Bathroom Remodeling Company
Irvine homeowners call us because we already know the answers to the questions that stall most remodels here. Which window styles does the Northwood HOA allow in a second-floor bath? Does the City of Irvine require a separate mechanical permit for a bath fan relocation in a 1970s Turtle Rock home? Can you swap a 1.6-gallon toilet for a 1.28-gallon model without tripping an Irvine Ranch Water District compliance flag? These aren’t theoretical questions for us. They’re the first thirty minutes of every estimate we do in Woodbridge, Great Park, and University Park.
We built our reputation on two things Irvine homeowners actually value: showing up when we say we will, and not treating HOA rules as an afterthought. Neil Stratton runs every Irvine project with the same standard: if it needs architectural review, we file it before we order a single fixture. That saves you weeks, not days. It also keeps you out of the awkward position of explaining to your community manager why there’s a new window frame visible from the street that nobody approved.
Our Irvine customers keep sending us back into the same neighborhoods. That repeat business is worth more than any star rating we could quote. When a homeowner in Woodbridge refers us to their neighbor two streets over, we know we did the job right.
Our Bathroom Remodeling Services in Irvine
Full Bathroom Remodels
A full remodel in Irvine means gutting a 1970s or 1980s bath down to the studs and rebuilding it to current code. In neighborhoods like Northwood and Turtle Rock, this almost always includes replacing the original cast-iron or galvanized supply lines, swapping the old cultured marble surround for a waterproofed tile system, and bringing the vent fan up to current CFM requirements. We handle every trade: demo, rough plumbing, electrical, waterproofing, tile, glass, and finish trim. One crew, one schedule, one point of contact.
Fixture and Finish Upgrades
Plenty of Irvine bathrooms don’t need a full tear-out. The original cabinet boxes in 1990s tract homes are often solid plywood and worth keeping. What dates the room is the brass trim, the almond-colored tub, the builder-grade light bar, and the plastic tub surround. We swap those out in two to three weeks: new vanity top, new fixtures, new lighting, new glass doors, new paint. You get a fresh bath without paying for plumbing you don’t need to move.
Water-Efficient Retrofits
Irvine Ranch Water District enforces flow-rate standards that go beyond state minimums in some categories. If you’re replacing a toilet, showerhead, or lavatory faucet in a home served by IRWD, we make sure the fixtures you pick pass compliance so you don’t get a letter asking for a correction. Most of the models we recommend for Irvine are 1.28 GPF toilets and 1.5 GPM showerheads. They work well and keep you clear of district fines.
Garage-Adjacent and ADU Bathrooms
We build bathrooms inside garage-conversion ADUs throughout Irvine, and these have their own set of rules. The original garage slab usually needs leveling before a shower pan goes in. The ceiling joists often need strengthening for a properly vented exhaust fan. And because Irvine garages get hot, we add insulation in the walls and ceiling before the drywall goes up. If you’re converting a garage into an ADU with a bathroom, we’d rather handle both the ADU and the bath under one permit. Fewer inspections, one contractor, one warranty. That’s the point of working with our Bathroom Remodeling team, and it matters even more when the bathroom is inside a garage conversion.
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
We work with the brands you’ve already been researching. On Irvine bathroom projects, the materials that hold up best are the ones designed for humidity, hard water, and daily use. We regularly install James Hardie-backed niches and trim in shower surrounds because they stand up to moisture better than standard drywall returns. For ADU bathrooms in Irvine, we incorporate prefab and modular systems from brands like Tuff Shed and Plant Prefab when the project calls for it, and we know how their factory timelines interact with Irvine’s plan check and inspection calendar. Your lot, your budget, the right system. We’re familiar with the products, not married to any of them.
Common Bathroom Remodeling Problems We See in Irvine Homes
- Cracked cultured marble pans. The original 1980s master baths in Woodbridge and Northwood used one-piece cultured marble surrounds with integrated pans. After thirty-five years, the pan cracks at the drain collar and water gets underneath the floor. The fix is a tile-ready base, but the demo has to be done carefully to avoid damaging the subfloor and triggering a structural inspection.
- HOA-flagged window changes. If your remodel changes the size, location, or style of a street-visible bathroom window, Irvine’s architectural review will catch it. We’ve seen homeowners get a stop-work notice because they swapped clear glass for frosted without approval. The review doesn’t take long if you file first. It takes weeks to undo if you don’t.
- Non-compliant fixtures. A big-box store will sell you a 2.5 GPM showerhead in Irvine. IRWD will flag it. We spec compliant fixtures from the start and save you the second trip and the citation.
- Moisture problems in garage-adjacent baths. Bathrooms that share a wall with an uninsulated garage in Irvine collect condensation on the cold side, which leads to peeling paint and mold at the baseboard line. We fix this with proper insulation, a stronger vent fan, and a moisture barrier behind the drywall.
Pricing for Bathroom Remodeling in Irvine, CA
Here are the numbers, straight. A fixture and finish upgrade in an Irvine guest bath runs $8,500 to $15,000. That gets you a new vanity top, new fixtures, new lighting, new toilet, new glass shower door, and tile on the wet wall. A full guest bath remodel runs $15,000 to $25,000, complete with waterproofing, new tub or shower base, floor tile, and vent fan replacement. A master bath in the 1980s tract style, the kind with the big corner tub and the cracked cultured marble deck, runs $25,000 to $45,000 depending on whether you move plumbing or add a separate shower. If you’re remodeling a bath inside a garage conversion ADU, add $12,000 to $20,000 to your ADU budget, more if the slab needs structural work. Call (866) 808-7312 and we’ll put these numbers on paper for your specific home. The estimate is free, and it’s a line-item quote, not a round number.
We Also Serve Cities Near Irvine
Our crews are in Irvine every week, and we extend the same service to Bathroom Remodeling in Irvine neighbors in Tustin, Aliso Viejo, Santa Ana, and North Tustin. Different cities, different rules. Same standard of work, same free estimates, same phone number.
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, if the work is invisible from the street. Swapping a vanity, replacing a toilet, updating lighting inside the room, or retiling a shower that doesn’t face a street-visible window can usually move forward without architectural review. What triggers review is any change to street-visible windows, exterior vent locations, or anything else a neighbor can see. In master-planned Irvine villages that’s most second-story baths. We’ll tell you before you start whether your specific scope needs HOA approval. Call (866) 808-7312 and we’ll check your village’s design guidelines together.
The most common upgrade is the guest bath tub-to-shower conversion. 1980s-era guest baths in Woodbridge, Northwood, and Turtle Rock were built with a fiberglass tub-and-surround combo that’s now stained, shallow, and dated. Owners want it out and a walk-in shower in. The catch in Irvine is the window. If that tub wall has a street-visible window, the HOA will review the conversion and may require you keep the same window style and obscure glass. We handle that filing for you.
Yes, for anything beyond cosmetic swaps. Moving plumbing, relocating a drain, adding a circuit, changing a fan duct, or replacing a shower valve all require a City of Irvine permit. We pull permits on every job we do in Irvine, and we pass inspections before the work is signed off. The process is routine for us, but it does add about two to three weeks to the schedule from permit application to approved plan. If someone quotes you a remodel with no permits, you’re buying a problem.
Irvine’s dry, warm climate pulls moisture out of materials fast, which is mostly good for tile and grout. But the same dry heat causes caulk joints to crack and shrink sooner than they would in a coastal city. We use higher-quality silicone caulk at all change-of-plane joints in Irvine bathrooms for that reason, and we recommend exhaust fans sized one step up from the minimum. Warm attic air in summer also means a poorly vented fan just recirculates hot air into the bathroom. It’s a small detail that makes a real difference.
Yes. Garage-conversion ADUs are the most common style of ADU in Irvine because they avoid the HOA fight over new footprints and setbacks. The bathroom inside that conversion needs a raised or properly pitched drain line, a level slab, and insulation in the walls and ceiling before the shower goes in. We typically do the ADU conversion and the bathroom under one permit, which keeps your inspections coordinated and your costs lower than hiring two separate contractors. It’s exactly why we built our company around doing both under one roof.
Ready to Talk About Your Irvine Bathroom?
If you live in Irvine and you’re weighing a bathroom remodel, start with a free estimate. We’ll walk the space, check what your HOA requires, and give you line-item numbers so you know what you’re paying for before you commit. Call (866) 808-7312 or fill out the form on this page. We’ll get you on the schedule, walk you through the permit and review process, and handle the whole job from first demo to final walkthrough.
Written by Neil Stratton, Owner at Cottage ADU Builders, serving Irvine, CA.