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Find Basement remodelers in Seattle

Avatar for Johnson and Sons Construction
Johnson and Sons Construction
4.9(
110
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Warranties offered

"In 2022, we decided to add a new kitchen and substantially remodel our mid-1960s Edmonds rambler. After reading many on-line reviews and meeting with several contractors we decided to go with Johnson and Sons.....and we are so very happy that we did. From the very start we were impressed with how open, honest and responsive Vic Johnson was, a trend that continued throughout our project. As you might imagine, a significant remodel and addition to a 60-year old home is likely to bring with it surprises and our remodel was no exception. Despite the many challenges encountered, Johnson and Son and their subcontractors readily overcame them. Among the many lessons we learned during our remodel was the value of quality subcontractors. Vic's relationship with his subs in some cases extend more than a decade and the depth of these relationships was reflected by the quality and timeliness of their work. All in all we feel that the workmanship, attention to detail and care shown by all involved in our remodel was superb. We highly recommend Johnson and Sons to anyone looking to remodel their home."
Response time2 days
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for JJ Construction & Home Solutions, LLC
JJ Construction & Home Solutions, LLC
4.7(
45
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"As always, Jorge and Jose showed up on time, did the work they promised to do, and charged a fair price. Their attention to detail is terrific! I highly recommend them for your home repair/remodeling projects JJ Project Solutions https://jjprojectsolutionsllc.com/ ‭(470) 929-2687‬"
Ernie
Ernie
Ernie
Ernie
Ernie

+144

Response time5 days
Recommended by94%of homeowners
Avatar for Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
137
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"I hired Topaz Remodeling to replace my front porch, including tearing out the damaged surface, installing a proper drain (the original builder’s oversight caused major leaks), and repairing the resulting damage to the floor, hardwood, and basement. The owner’s communication was excellent, keeping me informed about schedules and progress. They even finished ahead of the estimated timeline. Omar, the project lead, was phenomenal. His recommendations elevated the final result, and his attention to detail was unmatched. The tilework is flawless, with precise measurements ensuring a polished look. The team delivered exceptional quality, turning a stressful situation into a seamless process. My new porch is beautiful and fully functional. I highly recommend Topaz Remodeling and will gladly use them again for future projects."
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel

+53

Response time10 hrs
Response rate98%
225 neighbors recently requested a quote
Gold Remodeling Inc
4.9(
177
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"We chose Gold Remodeling after talking to a few contractors, and I?m glad we did. They seemed more organized and realistic from the start. The basement remodel stayed close to the original timeline and budget, which doesn?t always happen. The crew worked hard and didn?t cut corners. It?s not perfect, but it feels well done and worth the investment."
My Jobs
My Jobs
My Jobs
My Jobs
My Jobs

+1

Response time2 days
3 neighbors recently requested a quote
Avatar for Renovate Design/Build
Renovate Design/Build
5.0(
13
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Everyone at Renovate was excellent to work with, communicated well, and obviously cared about doing quality work according codes and rules. Our project had a couple surprises (asbestos!), and we ending up spending more than we thought, but the whole team made it a positive experience, and we would love to work with them again on the next phase of our basement!"
Snohomish Mid-Century Modern Remodel
Wedgwood ADU Basement Remodel
Madrona Basement Remodel
Wedgwood Kitchen & Deck
Ravenna Basement Remodel

+107

1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Bello Home Solutions LLC
Bello Home Solutions LLC
5.0(
19
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Yariel and team did a terrific job remodeling my townhome. The job (paint, drywall repair, kitchen remodeling) was TOP QUALITY. Additionally, I truly appreciated the superb communication (scoping the work, fast quote, transparent scheduling and diligent updates). I will definitely be hiring them again for my next projects and highly recommend them to anyone looking for a professional remodeling team."
General Remodeling Project
Kitchen and Bath Remodeling Project
Kitchen and Bath Remodeling Project
Additional Photos
Additional Photos

+19

Response time8 hrs
1 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Johnson Custom Builders
Johnson Custom Builders
4.9(
101
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Ryan and his team did a great job on our basement remodel. Communication was strong as was attention to detail. A concerted effort was made to keep the worksite clean. Like many renovations, it took longer than anticipated and we encountered a measurement hiccup that, while solved, could have been identified and addressed upfront"
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

Response time11 hrs
9 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Puget Sound Builders & Renovation
Puget Sound Builders & Renovation
5.0(
84
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2006

Credit card accepted

Customers say: True professional

"We hired Puget Sound B&R for basement remodeling and Dan did a fantastic job managing the project. The crew was hardworking, respectful, and detail-oriented. Our basement now feels like a completely new living space. Great experience from start to finish with outstanding workmanship."
Bathroom Renovation
Basement Remodel
Bathroom Renovation
Basement Remodel
Kitchen Remodeling

+23

130 neighbors recently requested a quote
Recommended by1%of homeowners
Avatar for Be Home Remodeling
Be Home Remodeling
4.7(
79
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Renovations have never appealed to me, but this team made it easy. In addition to being gorgeous, my new kitchen is also practical. Their communication and attention to detail were excellent."
Response time9 hrs
Response rate99%
537 neighbors recently requested a quote
Avatar for BB-Builders-Pro LLC
BB-Builders-Pro LLC
5.0(
40
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Credit card accepted

"We couldn't be happier with our basement remodel! The team was professional, detail oriented and kept us updated throughout the process. BB Builders Pro exceeded our expectations with their quality work. Highly recommend them for any home improvement project!"
design rendering
design rendering
design rendering
design rendering
Approved floor plan

+50

Response time9 hrs
Response rate99%
131 neighbors recently requested a quote
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Showing 1-10 of 585
FAQs for basement remodeling projects in Seattle, 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 Seattle, WA homeowners’ guide to basement remodelings

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