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Find Basement remodelers in Renton

Avatar for Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
108
)

Serving Renton, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Renovating a home can be stressful, but this team made the entire experience smooth and exciting. They truly listened to what we wanted and helped bring our vision to life. Every room feels thoughtfully designed and carefully built. The attention to small details, the clean job site, and the respectful attitude of the crew made such a difference. Walking into our "new" home for the first time after the renovation was an emotional moment. We couldn't be happier with the outcome and are so grateful we chose them. "
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel

+53

Response time10 hrs
Response rate98%
138 neighbors recently requested a quote
Avatar for Skyline Builders WA INC
Skyline Builders WA INC
5.0(
59
)

Serving Renton, WA and surrounding areas

Angi Approved

In business since 2014

Free estimates

Emergency services offered

"We were so pleased with Skyline Builders. Tony, Benjamin, and the crew were respectful, professional and thorough through all the phases of our bathroom remodel. They communicated with us daily as the project was underway and always took our preferences into account. At the end of each day, they made sure that the area was cleaned and protected, and because all the materials were picked and ready, there were no missed or delayed days. All of the crew were hardworking and so skilled at their different jobs. Our bathroom turned out just the way we pictured it, and I would recommend this company any time"
Kitchen transformation
The perfect result
New Basement
The final result
Kitchen Final Result

+97

Response time4 hrs
Response rate99%
46 neighbors recently requested a quote
Avatar for BB-Builders-Pro LLC
BB-Builders-Pro LLC
5.0(
37
)

Serving Renton, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2000

Free estimates

Credit card accepted

"Our two bathrooms were remodeled by BB Builders Pro, who worked carefully with us and went above and beyond to ensure our satisfaction. Highly recommend them for any remodeling services!"
design rendering
design rendering
design rendering
design rendering
Approved floor plan

+50

Response time9 hrs
Response rate99%
170 neighbors recently requested a quote
Avatar for Anyvision Home Remodeling
Anyvision Home Remodeling
5.0(
20
)

Serving Renton, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"We recently completed a basement finishing project and had a great experience from start to finish. Alex was our main point of contact, and from the sales process through completion, everything was smooth and well organized. Communication was truly top notch — we received a daily video update showing progress and outlining the plan for the next day, which made the entire process feel transparent and stress-free. Roman and another crew member were on-site day in and day out, often from 7–8am until as late as 7pm, and their work ethic really showed. They were professional, reliable, and clearly committed to getting the job done right. We now have over 800 square feet of beautifully finished additional living space, and we couldn’t be happier with the result. Overall, we were very pleased with both the process and the final outcome and would absolutely recommend this team."
Remodeling - Kitchen & Bathroom Project
Kitchen remodeling
Bathrooms remodeling
Home remodeling
Remodeling - Kitchen & Bathroom Project

+187

1 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Iconiq Construction, LLC
Iconiq Construction, LLC
5.0(
18
)

Serving Renton, WA and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2023

Free estimates

Offers commercial services

"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."
kitchen remodel
Kitchen remodel
addition project
bathroom remodel
bathroom remodel

+2

Response time1 day
Response rate94%
3 neighbors recently requested a quote
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FAQs for basement remodeling projects in Renton, WA

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Renton, WA homeowners’ guide to basement remodelings

From average costs to expert advice, get all the answers you need to get your job done.