Mercer Island Master Bathroom Remodel
For this Mercer Island residence, we eliminated restrictive mid-century partition walls to merge a cramped dressing area and bathroom into an open-concept primary suite. The engineering scope involved re-routing main plumbing lines, leveling subfloors for a continuous chevron tile layout, and installing a custom dual walnut vanity alongside a freestanding soaking tub and glass-enclosed wet room.
Spatial Reconfiguration: Dismantling the Mid-Century Floor Plan
The original primary suite suffered from a highly fragmented, inefficient layout typical of mid-century Pacific Northwest architecture.
The bathroom plumbing fixtures were isolated behind dark, wood-paneled partition walls, separating a cramped walk-in dressing closet from a low-clearance tub-shower combination.
Dated fluorescent lighting, blue paint, and worn linoleum flooring made the space feel restrictive despite its generous footprint.
Our main engineering objective was to open the entire layout. This required removing three non-bearing interior walls, leveling uneven subfloors across the bedroom-to-bathroom transition, and completely re-routing the waste stacks.
The structural overhaul converted a series of dark closets into a fluid, multi-functional primary retreat filled with natural light.
| Technical Project Specifications | |
| Specifications | Details |
| Project Type | Full-Scale Structural Reconfiguration & Multi-Zone Bath Integration |
| Location | Mercer Island, WA |
| Primary Structural Scope | Non-bearing partition wall removal, subfloor leveling, waste line relocation |
| Surfacing Materials | Calacatta gold-veined porcelain wall panels, chevron-patterned floor tile |
| Vanity Configurations | Primary: Stained walnut dual vanity. Secondary: Wall-hung charcoal floating vanity. |
| Accent Finishes | Dark metallic-ink floral wallpaper, vertical picket ceramic accent tile |
| Hardware & Fixtures |
Brushed gold plumbing valves, backlit LED mirrors, low-iron glass partitions |
Completed Project Gallery
Mechanical and Structural Execution
Reconfiguring this floor plan required relocating active utility lines. Our plumbing team core-drilled sections of the floor framework to relocate the main waste line four feet to the left, allowing the toilet to be isolated in its own private water closet.
The shower subfloor was rebuilt using a sloped, pre-fabricated mortar bed lined with a continuous topical waterproofing membrane to protect the home’s structure against long-term moisture penetration.
For sound attenuation, the newly built partition walls surrounding the water closet were packed with dense mineral wool insulation prior to drywall installation, verifying acoustic privacy within the master suite.
The Before Bathroom Remodel
Our Approach to Full Bathroom Remodeling on Mercer Island
By stripping the space down to the bare framing studs, we consolidated the separate dressing zones and plumbing footprints into a unified master suite. The old wood-veneer closets were replaced with an open-concept plan centered around a freestanding hydrotherapy soaking tub and a glass-enclosed walk-in wet room.
The Primary Dual Vanity Area:
-
Cabinetry: Premium stained walnut cabinetry featuring flat-panel drawers and horizontal brushed gold bar pulls.
-
Countertops: White quartz surfaces with dual undermount basins and deck-mounted gold fixtures.
-
Illumination: Two vertical, oval LED backlit mirrors paired with linear gold light bars overhead to eliminate shadows.
The Walk-In Shower & Wet Room:
-
Wall Panels: Large-format, heavy-veined Calacatta porcelain tiles running floor-to-ceiling to minimize grout lines.
-
Plumbing Fixtures: Wall-mounted brushed gold rain shower head, matching thermostatic controls, and a height-adjustable handshower mounted on a vertical slide bar.
-
Glass Partition: Stationary, low-iron tempered glass panels secured with heavy-duty gold corner brackets to maintain transparency
The Independent Powder Room:
-
Vanity: Wall-hung charcoal gray floating vanity equipped with a single-piece integrated white ceramic sink top.
-
Wall Coverings: Textured light-gray floral wallpaper paired with oversized marble-look porcelain floor tiles to keep the smaller footprint feeling expansive.
Client Reviews
Other Ways We Can Help
Ready to Start Your Transformation?
Whether you are planning a single-room update or a full-home replacement, our team provides the honest, expert advice you need.
Contact us today to schedule your on-site consultation.
Contact Us
Recent Transformations on Mercer Island and the Eastside
Explore our latest design-build projects from high-end kitchen remodels to structural ADU conversions. Each project represents our 18-year commitment to building science and artisan craftsmanship.
Click on any project below to explore the details.
