Licensed General Contractor · CSLB #1106798

Bathroom Remodel in Marin County

Luxury bathroom remodeling with spa-inspired design. Walk-in showers, freestanding tubs, heated floors, custom vanities. Fully permitted. CSLB #1106798.

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Luxury Bathroom Trends in Marin County

Marin County homeowners are investing in spa-inspired bathroom designs that transform daily routines into moments of luxury. The trend toward larger, more open bathrooms with natural materials, warm lighting, and high-end fixtures reflects the wellness-focused lifestyle that defines communities like Mill Valley, Tiburon, and San Anselmo.

The most requested features include curbless walk-in showers with frameless glass, freestanding soaking tubs, heated porcelain or natural stone floors, floating vanities with integrated storage, and wet rooms that eliminate the traditional shower-tub barrier. Natural materials — marble, travertine, wood-look porcelain, and matte black or brushed gold hardware — dominate the Marin County aesthetic.

Beyond aesthetics, modern bathroom remodels address critical functional concerns: waterproofing systems like Schluter DITRA and Kerdi membranes protect the structure behind the tile, proper ventilation prevents mold in our coastal climate, and ADA-compliant features like grab bars, comfort-height toilets, and barrier-free showers add long-term accessibility for aging in place.

ConstruBay (CSLB #1106798) is a licensed general contractor specializing in bathroom remodeling throughout Marin County. We manage every phase from design through final inspection, including all permits for plumbing and structural changes.

What We Build

Walk-In Showers

Curbless and low-threshold walk-in showers are the most requested feature in Marin County bathroom remodels. We build frameless glass enclosures with linear drains, bench seating, recessed niches, and rain showerheads. Every walk-in shower is waterproofed with Schluter DITRA or Kerdi membrane systems to prevent moisture damage behind the tile.

Freestanding Tubs

Freestanding soaking tubs create a spa-like focal point in primary bathrooms. We install stone resin, cast iron, and acrylic freestanding tubs with floor-mounted fillers and proper structural support. Placement requires careful planning for plumbing access, floor reinforcement, and drain positioning.

Heated Floors

Radiant heated floors transform cold tile into a warm, luxurious surface. We install electric radiant heat mats beneath tile, stone, and engineered wood flooring. The system is controlled by a programmable thermostat and adds minimal thickness to the floor assembly. Heated floors are especially popular in Marin County homes where cool mornings are the norm year-round.

Custom Vanities & Cabinetry

Custom vanities maximize storage and set the design tone for the entire bathroom. We build floating vanities, double-sink configurations, and furniture-style pieces with soft-close drawers, integrated outlets, and custom countertops in quartz, marble, or porcelain slab. Every vanity is designed to fit your specific space and style.

Waterproofing & Tile Systems

Proper waterproofing is the most critical element of any bathroom remodel, and it is where many contractors cut corners. Water damage behind tile is the number one cause of costly bathroom failures, often not discovered until mold, rot, or structural damage has already occurred.

Schluter Systems

We exclusively use Schluter DITRA and Kerdi waterproofing membranes — the industry gold standard. DITRA provides uncoupling, waterproofing, and vapor management beneath tile floors. Kerdi membrane waterproofs shower walls, curbs, and benches. The Schluter system includes integrated drains, niches, and edge profiles that create a fully waterproof assembly from substrate to finished tile.

Tile Installation

Our tile installers are experienced with large-format porcelain slabs, natural stone, mosaic accents, and complex patterns including herringbone, chevron, and waterfall installations. We use leveling systems for lippage-free results and color-matched grout for a seamless finish. Every tile installation is inspected for proper thinset coverage, grout consistency, and waterproof integrity.

ADA & Accessibility

Many Marin County homeowners are incorporating accessibility features into their bathroom remodels for aging-in-place comfort. We install blocking for future grab bars, comfort-height toilets, barrier-free shower entries, hand-held showerheads, and wider doorways. These features can be designed to blend seamlessly with luxury aesthetics.

Bathroom Remodel Cost Ranges in Marin County

Bathroom remodel costs in Marin County range from $40,000 to $150,000 or more, depending on scope, materials, and whether structural changes are involved.

Guest Bathroom Refresh

$40K – $65K

New tile, vanity, fixtures, lighting

Primary Bathroom Remodel

$65K – $100K

Walk-in shower, freestanding tub, custom vanity

Luxury Spa Bathroom

$100K – $150K+

Heated floors, steam shower, premium materials

Bathroom Expansion

$80K – $150K+

Structural changes, plumbing relocation

These ranges include design, materials, labor, permits, and project management. ConstruBay (CSLB #1106798) provides detailed estimates after an initial consultation and site visit.

Our Bathroom Remodel Process

1

Design Consultation

We assess your existing bathroom, discuss your vision, and develop a design plan including layout, materials, and fixtures. We provide 3D renderings so you can visualize the finished space before construction begins.

2

Permits with PlanPass.ai

For remodels involving plumbing, electrical, or structural changes, we handle all permit applications. Our PlanPass.ai system pre-analyzes plans against Title 24 energy code, plumbing code, and local requirements to avoid delays.

3

Construction

Demolition, rough plumbing and electrical, waterproofing, tile installation, fixture setting, and finish work. A dedicated project manager keeps you informed with regular updates and coordinates all trades.

4

Final Walkthrough

We conduct a detailed walkthrough, address any punch list items, and ensure everything meets our quality standards and your expectations. All permits are finalized and closed.

PlanPass.ai pre-analyzes your plans to catch code and permit issues before submission — saving weeks of delay.

Bathroom Remodel FAQs — Marin County

Start Your Bathroom Remodel

From design consultation to final walkthrough, ConstruBay manages every detail of your bathroom remodel. Licensed general contractor CSLB #1106798, based in Mill Valley, serving all of Marin County.

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Or call us directly: (415) 968-9494 · CSLB #1106798