South Bay primary bathroom remodel by DECOMA Industries

Residential

Bathroom Remodeling

Master suites, hall baths, powder rooms, and full bathroom additions across the South Bay — tile, stone, plumbing, lighting, and waterproofing done right.

Why bathroom remodeling

A bathroom remodel is half plumbing, half finish — and the seam between them is where most jobs go sideways.

The fixtures you want need a different valve depth than the wall can handle. The shower drain has to move three inches and that means breaking the slab. The contractor framed before waterproofing and now the inspector won't sign off. The fan that came with the house dumps into the attic and the moisture is rotting the rafters. These are the failure modes we plan around before demo.

DECOMA does bathroom remodels under one Class A and B general contractor — design, permits, structural, plumbing, electrical, waterproofing, tile, stone, and lighting. Our plumbers and our tile setters are in the same conversation with our designer before the fixture spec is finalized. That's how you get a bathroom that looks like the renders five years out.

We've remodeled master suites in Manhattan Beach, hall baths in 1940s Torrance, powder rooms in Palos Verdes, and full additions onto Redondo Beach single-stories. The patterns repeat: pick the waterproofing for the substrate, sequence the trades around the inspection, source the stone before the schedule depends on it.

If you're trying to decide whether to redo just the shower or take the whole bathroom down to studs, start with a free 30-minute consultation. We'll tell you what the existing conditions allow, what permits the scope triggers, and what timeline is realistic for your specific home.

Start with a free consultation → — or browse our Projects for finished work.

Written by John Notaro, President & CEO, DECOMA Industries — CSLB A/B #375508, California Real Estate Broker.

What you get

Everything we deliver.

01
Design & layout
Floor plans drawn to code-required clearances — toilet, shower, vanity, door swing. Wet wall consolidation when relocating plumbing to keep the rough-in clean and the inspection clean.
02
Permits & inspections
Permit submittal when scope triggers it. Rough plumbing, rough electrical, framing inspections scheduled in sequence so the wall doesn't go up before the inspector signs off.
03
Waterproofing systems
Schluter Kerdi, Wedi, or hot-mop pan — chosen for the substrate and your shower style. The waterproofing is what fails ten years from now; this is the layer we never cut corners on.
04
Tile, stone & finishes
Floor tile, wall tile, mosaic accents, slab vanities, niches, and shower benches. We template stone on-site and dry-lay tile patterns before setting so you see the finish before it's permanent.
05
Plumbing fixtures & rough-in
Hansgrohe, Kohler, Toto, Brizo, Watermark — fixture spec coordinated with valve depth and stud-bay clearances. Pressure-balanced or thermostatic valves to current code.
06
Lighting & ventilation
Layered lighting — vanity, ambient, accent, niche. Bath fans sized to the cubic footage and ducted to the exterior. No fan dumping into the attic and growing mold.

How we run it

Scope to sign-off.

01
Walk & scope
On-site visit, measure, photograph existing conditions. We look at substrate, ventilation, electrical capacity, and water-supply quality before we draw a plan.
02
Design & specification
Floor plan, tile and stone selections, fixture spec, lighting layout. We refine until you're confident, then lock the design and price the build to it.
03
Permits & ordering
Permit submittal in parallel with tile, stone, and fixture ordering. Lead times on some imported tile are the long pole — we order early to protect the schedule.
04
Demo, rough-in & install
Tear-out, rough plumbing and electrical, framing changes if any, waterproofing, tile, stone, vanities, lighting, fixtures. Typical timeline 4–8 weeks on-site depending on scope.
05
Punch & warranty walk
Two-pass punch list, leak test on every fixture, written one-year workmanship warranty. We come back at six months to address grout settling or anything that has shifted.

Why DECOMA

One license, three disciplines, forty years.

Family-run South Bay general contractor since 1978. We design, build, and manage — under one license — so the team you start with is the team that hands you keys and the team that answers the phone when something needs fixing in year ten.

Years building: 48+
Projects delivered: 3,000+
Repeat clients: 300+
CSLB Class: A/B

FAQ

Common questions.

How long does a bathroom remodel take?

Powder room: 2–3 weeks on-site. Hall bath: 3–5 weeks. Full master suite: 5–8 weeks. Add 2–6 weeks before that for design, ordering, and permits. Imported tile lead times can stretch the start date — we order during permit review to keep things parallel.

Do I need permits to remodel a bathroom?

Cosmetic-only (tile, vanity, fixtures, paint, lighting): usually no. Anything that moves a wall, relocates the toilet or shower drain, or adds new circuits: yes. The threshold varies by South Bay city. We tell you the answer on the walk-through.

Can I use the other bathrooms during construction?

Yes — we isolate the work area, plastic-wall it off, and keep the rest of the house functional. Single-bathroom homes are tougher; we coordinate sequencing so you're never without a working shower for more than 48 hours.

What kind of waterproofing do you use?

Schluter Kerdi or Wedi sheet systems for most showers — they're modern, fully bonded, and inspectable. Hot-mop pan still has its place for traditional mud-set installations. We choose by substrate and shower style, never by what's cheapest. The waterproofing is what determines whether the shower lasts 5 years or 30.

Can you match an existing finish elsewhere in the house?

Usually yes — we'll source matching tile, stone, plumbing fittings, and lighting where it's still made. When something is discontinued, we'll bring you the closest commercially available option and tell you honestly whether it'll read as a match or as a near-miss.

What kind of warranty comes with the work?

One-year written workmanship warranty on everything we install. Manufacturer warranties pass through on fixtures, tile, stone, and waterproofing. For repeat South Bay clients, we honor warranty walks past the formal term.

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