Bathroom Remodel in Renton, WA — Tub-to-Shower Conversion

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Bathroom Remodel in Renton, WA — Tub-to-Shower Conversion

Project Transformation: Before & After

Before

Dated tub/shower with white tile, seashell accent tiles, and a shower curtain before the conversion.

After

New walk-in shower with large-format gray marble-look wall slabs, a frameless sliding glass door with brushed-nickel hardware, and a custom built-in shampoo niche.

Project Overview: A Bathroom Remodel in Renton, WA

The homeowners of this Renton, WA property asked Grand Building Construction to convert their dated tub/shower into a modern walk-in shower. The original shower featured dated white tile with seashell accent tiles and a shower curtain, which made the bathroom feel old and closed in.

Our team removed the old tub and built a spacious walk-in shower in its place. The new shower features very large-format gray marble-look wall slabs installed to look almost seamless, a frameless sliding glass shower door with brushed-nickel hardware, a custom built-in shampoo niche with shelves, a new white shower base, and both a rainfall shower head and a handheld shower. Marble-look floor tile completes the updated look. See more of our work in our before and after gallery.

Project Details

Bathroom Remodel in Renton, WA
Project Type	Bathroom Remodel — Tub-to-Shower Conversion
Location	Renton, WA

Materials & Finishes Used

Shower Wall Slabs: Very large-format gray marble-look slabs installed for an almost seamless look.
Shower Door: Frameless sliding glass shower door with brushed-nickel hardware.
Shampoo Niche: Custom built-in shampoo niche with shelves.
Shower Fixtures: Rainfall shower head plus a handheld shower.
Shower Base: New white shower base.
Floor Tile: Marble-look floor tile.

Our Process

Step 1: Design & Layout Planning

We collaborated with the homeowners to design the new layout. Our primary focus was to ensure the new, expanded walk-in shower would fit perfectly into the space left by the corner tub while maintaining a natural flow and open feel in the bathroom.

Step 2: Demolition & Tub Removal

Our crew carefully demolished and hauled away the old corner tub, tile surround, and standing shower stall. We capped and sealed the tub’s plumbing lines, re-routed the shower drains, and prepared the subfloor and walls for the new, expanded shower enclosure.

Step 3: Framing & Advanced Waterproofing

We framed the new, enlarged shower walls and the custom shower bench. Since waterproofing is the most critical step of any bathroom remodel, we applied a multi-layer Schluter-Kerdi waterproof membrane system across the entire shower enclosure, bench, and niche to ensure a 100% watertight seal.

Step 4: Custom Tile & Fixture Installation

Our expert tile installers laid the large-format marble-veined porcelain tile floor-to-ceiling, along with the black-and-white marble floor tile and the decorative border. We then installed the matte black dual-head shower system, upgraded the vanity faucets, and hung the illuminated LED mirrors.

Step 5: Glass Enclosure & Final Walkthrough

We installed the custom frameless glass shower enclosure and completed a final walkthrough with the homeowners. The project was completed on schedule in 7 days, leaving the homeowners with a gorgeous, modern master bathroom they will enjoy for years to come.

Permitting & Code Compliance

For this Bathroom Remodel in Renton, WA, we pulled the necessary plumbing permits to safely cap the old corner tub lines and re-route the drains for the expanded walk-in shower. Grand Building Construction always evaluates permitting needs at the start of every project to ensure full compliance with local building codes and regulations. This gives our clients peace of mind, knowing their renovation is completed properly and to the highest standards. Learn more in our Permit Guide.

Why Choose Grand Building Construction?

At Grand Building Construction, we specialize in bathroom remodeling projects that add real value and luxury to your home. We understand the unique challenges of wet-area construction, including advanced waterproofing, proper slope-to-drain engineering, and ventilation. Our team delivers honest work at competitive prices, and we never cut corners. From the initial consultation to the final walkthrough, we are committed to exceeding your expectations.

Ready to Start Your Remodel?

Let’s build your dream space together. Call us for a free, no-obligation consultation!

Call Us Today: (206) 492-8220

Request a Consultation

Premium Materials & Local Bathroom Design Trends in Renton, WA

In Renton and the surrounding Pacific Northwest, modern bathroom design is heavily focused on creating clean, open-concept, spa-like retreats. Homeowners are increasingly choosing large-format porcelain tiles for shower walls because they minimize grout lines, making the shower easier to clean while providing a sleek, seamless look. Backlit LED smart mirrors are also a major trend, offering both modern aesthetics and highly functional, adjustable task lighting for vanity areas.

When converting a tub to a walk-in shower, incorporating custom features like built-in benches and recessed niches adds both safety and luxury. Matte black fixtures remain a popular choice, providing a bold contrast against light-colored marble or quartz surfaces. At Grand Building Construction, we stay ahead of local design trends and use only premium materials to ensure your remodeled bathroom is beautiful, durable, and tailored to your lifestyle.

Planning a project like this one? Learn more about our bathroom remodeling services in Renton and what our team can do for your home.

Bathroom Remodeling FAQs

Do I need a permit for a bathroom remodel in Renton, WA?

Permits are typically required when a remodel involves plumbing, electrical, or layout changes. Grand Building Construction coordinates the permitting process and required inspections as part of your project, so everything is built to code.

Can I use my bathroom during a remodel?

During a full bathroom remodel, that bathroom is out of service while work is underway. If your home has a second bathroom, most homeowners stay in the home comfortably; we plan the sequence with you so you know what to expect at each stage.

What affects the cost of a bathroom remodel?

The biggest factors are the size of the bathroom, whether fixtures move or the layout changes, tile and fixture selections, and the condition of the plumbing behind the walls. A free in-home estimate is the most accurate way to price your specific project.

Do you help choose tile, fixtures, and finishes?

Yes. Material selection and planning are part of our process — we help you choose tile, vanities, fixtures, and finishes that fit your home and budget before construction begins.

Get a Free Estimate for Your Bathroom Remodel

What Our Customers Say

      EXCELLENT  
   Based on 86 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   azucena solano 
 
 
 
 Trustindex verifies that the original source of the review is Google. I recently decided to remodel my master bathroom because it was seriously outdated,  since the 70s! Working with Emil so far has been a pleasure. We got creative together, figuring out solutions for things that mattered to me. His communication and attention to detail were what I really liked. From the beginning of the project, Emil made sure I was in the loop and part of every decision making process. I really appreciated that, especially since I can be quite picky about what I want. The bathroom is still in progress but so far I absolutely love the transformation! Thank you guys! I must say the work has been on time, super clean, the crew is very respectful and I appreciate their hard work. We're still in the process right now and so far this is my 5 star review.
  
 
      Posted on Google  
   
   Ayleen Magana 
 
 
 
 Trustindex verifies that the original source of the review is Google. Josh helped us turn our old tub into a modern walk in shower, and it completely changed the feel of our bathroom. He suggested a tile pattern I never would have thought of, and it looks incredible with the lighting. Every evening before leaving, he cleaned up so well you could barely tell work was being done. The water pressure feels stronger now and the glass enclosure makes the whole room brighter. Couldn’t be happier with how it came out.
  
 
      Posted on Google  
   
   Jessica Lain 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had them convert my tub into a walk-in shower, and it’s easily the best upgrade I’ve done. The tile work is stunning, and the glass enclosure makes the whole bathroom feel bigger. They even added a rainfall showerhead — total game changer.
  
 
      Posted on Google  
   
   Daniela Hernandez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grand Building Construction in Bellevue did our bathroom remodel after years of putting it off, and I wish we had done it sooner. The crew removed old flooring, updated the plumbing, and created a gorgeous walk-in shower with glass doors. They also added a double vanity that makes mornings so much easier. The project was seamless, and their communication made the whole process stress-free. Our new bathroom is both practical and stunning.
  
 
      Posted on Google  
   
   Evy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Our living room remodel turned out to be a complete game-changer for our home. The crew removed the old carpet and replaced it with rich hardwood flooring, which instantly elevated the look of the space. They added crown molding for a refined touch, installed recessed lighting for a softer, warmer atmosphere, and even reconfigured the layout to create better flow. The attention to detail was impressive, from perfectly aligned trim to seamless paint transitions. This space now feels like the heart of the home, and we couldn’t be happier.
  
 
      Posted on Google  
   
   Julia Martinez 
 
 
 
 Trustindex verifies that the original source of the review is Google. We hired them to remodel our master bedroom and bathroom, and the transformation is unreal. From the custom vanity to the new walk-in shower, every detail was done with precision. The team showed up on time every day and really respected our space. It feels like we’re living in a boutique hotel.
  
 
      Posted on Google  
   
   Briana Rodriguez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Josh was great to work with throughout the entire project. They always kept me updated on the progress and responded quickly to all of my questions. Grand Building Construction was willing to help us with a couple of small projects that turned out great! We would definitely work with them again.
  
 
      Posted on Google  
   
   Kerem Solorio 
 
 
 
 Trustindex verifies that the original source of the review is Google. The basement remodel transformed our unused space into a cozy home theater and guest suite. They waterproofed the area, installed luxury vinyl floors, and soundproofed the walls. Their designers helped us pick the right colors and lighting to set the mood. Every detail was considered, from cable routing to smart lighting. It’s now our favorite room in the house.
  
 
      Posted on Google  
   
   dustin gutierrez 
 
 
 
 Trustindex verifies that the original source of the review is Google. We hired them for an exterior remodel for our home in Renton and were impressed at every stage. They replaced siding, upgraded our windows, and painted the entire exterior with precision. The house looks brand new and more energy efficient. Communication was constant, and they stayed on budget. We’ve had several compliments from neighbors already.
  
 
      Posted on Google  
   
   Marian Abigail Rodriguez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Living room and hallway got a full makeover with new flooring, paint, and built-ins. The work was clean, detailed, and finished on time. They respected our space and made sure everything fit our style.