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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon136
    Verified basement remodels reviews

Find Basement remodelers in Seattle

Avatar for A TO Z HOME REMODELING LLC
A TO Z HOME REMODELING LLC
5.0(
31
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Full kitchen remodel
Full kitchen remodel
Full kitchen remodel
Bathroom remodel
Full home remodel

+13

5 neighbors recently requested a quote
Recommended by9%of homeowners
Avatar for Johnson and Sons Construction
Johnson and Sons Construction
4.9(
118
)
Basement - Remodel

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
Response rate100%
6 neighbors recently requested a quote
Avatar for Puget Sound Builders & Renovation
Puget Sound Builders & Renovation
5.0(
1,372
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

In business since 2006

Credit card accepted

Customers say: True professional

"This basement remodel by Puget Sound BNR transformed an underused area into a beautiful and practical living space. From improved flooring and lighting to a fresh modern design, every detail added comfort and value. The finished basement now serves as a versatile area for relaxing, entertaining, or spending quality family time."
Bathroom Renovation
Basement Remodel
Bathroom Renovation
Basement Remodel
Kitchen Remodeling

+23

10 neighbors recently requested a quote
Avatar for JJ Construction & Home Solutions, LLC
JJ Construction & Home Solutions, LLC
4.7(
46
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"JJ construction was my #1 choice for remodeling. I made my appointment with JJ construction. The person showed up on time and very thorough. We were very pleased by their expertise and their advice. However, I decided to sell the house as is. No work was done on my house. But I do recommend this company for future projects."
Ernie
Ernie
Ernie
Ernie
Ernie

+144

Response time5 days
Recommended by94%of homeowners
Avatar for Renovate Design/Build
Renovate Design/Build
5.0(
13
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"I am very pleased with Renovate Construction. The original project was to completely redo one bathroom (replace existing fixtures in the same place) and add a shower to a very small half bath. During the project we discovered a few additional things that needed to be fixed (a gap in siding on the outside of our half bath was causing a leak, a leaky window in the basement meant that we needed to redo the drywall downstairs, and I asked to replace carpet on the upstairs with hardwood plus repaint the stairwell), and they were helpful and reactive to each new project. Everyone, whether the Renovate Construction crew or a subcontractor who worked on the project, was very good at their job. There were a few small mistakes, and they were fixed with no issue. Additionally, every person that I interacted with was professional, but more than that, they were nice to be around! That is so important when a crew is working in and around your home for weeks on end. Our project ended up being bigger than I had initially planned, for the reasons above, but the team stayed on time, on budget and in good contact with me throughout the process. I am pretty picky about fixtures and things, and they worked with me when I wanted some very specific tile, a customized sink, asked them to install vintage or Ikea elements, etc. We were having separate electrical work done at the same time, and they did a great job of coordinating with them as well. I loved their ideas and their work; I would definitely work with Renovate Construction on another project. I'm already dreaming of what my new kitchen will look like."
Snohomish Mid-Century Modern Remodel
Wedgwood ADU Basement Remodel
Madrona Basement Remodel
Wedgwood Kitchen & Deck
Ravenna Basement Remodel

+107

2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Johnson Custom Builders
Johnson Custom Builders
4.9(
102
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"We recently worked with Johnson Custom Builders to complete a total remodel of our master bathroom and we are absolutely thrilled with the results. We interviewed about 5 companies for the job, and it was clear from the start that working with the owner at JCB was a perfect match for us. This was our first major renovation, and we were anxious about...basically everything! We worked directly with the owner, and he made sure that we knew exactly what to expect at every point of the process. He encouraged us to dream big and then figured out ways to value engineer a solution that was closer to our budget. He brought experts into the project and was very respectful of our home and our family while the project was in process. He was the perfect blend of consultant, designer, builder, project manager, and sometimes even a mediator (!) when we couldn't agree on things. We are excited to continue remodeling our home in the coming years and wouldn't dream of using anyone other than JCB."
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

Response time11 hrs
6 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
141
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Good end result, but be ready to run the project yourself I hired Topaz Remodeling for a 50K basement finish. Some areas look good. But it required constant oversight. The serious stuff: The crew punctured a fully exposed water pipe 6 inches in front of them. Live wiring was left exposed above the ceiling with no junction box. I found it. That knocked out my greenhouse circuit, costing me about half my plants. Drywall went up before these issues were caught. Management: I was told a manager would be on site every other day. I saw one once. Communication went quiet after payments cleared. After a nearly two-hour milestone meeting, they requested payment early and disputed the terms. Quality: The shower door didn't fit because the base had a non-standard 2.5" threshold. The replacement failed after a week. Bottom line: The craftsmanship is there, but the homeowner has to catch the mistakes. If you hire Topaz, be prepared to manage closely and inspect everything before paying."
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel

+63

Response time10 hrs
Response rate100%
304 neighbors recently requested a quote
Avatar for Be Home Remodeling
Be Home Remodeling
4.6(
83
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I called this company to get a quote for a bathroom remodel. Ben was scheduled to come on site and give me a quote. I felt very comfortable with the quote and Ben. They did a great job on my bathroom finishes and plans a head. I even remodel my kitchen afterwards with them, Ben is very professional and responsive who made this process very easy. I defiantly going to use them again in the future."
Response time9 hrs
Response rate100%
496 neighbors recently requested a quote
Avatar for BB-Builders-Pro LLC
BB-Builders-Pro LLC
5.0(
40
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Credit card accepted

"BB Builders Pro did an amazing job transforming our basement into a stylish and functional space! The quality of work was outstanding and the team was professional and efficient. Now, our basement feels like a whole new part of our home. Highly recommend them for any remodeling project!"
design rendering
design rendering
design rendering
design rendering
Approved floor plan

+50

Response time9 hrs
Response rate99%
92 neighbors recently requested a quote
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Showing 1-10 of 602
Basement Remodel questions, answered by experts

Joists and beams are both part of the flooring system above your basement, with the beams spanning the length of your home and getting support from vertical posts underneath, and joists usually spanning half the width of your home with no support posts underneath. The floor joists provide even support to the subflooring and flooring above, and they distribute that load to the beams. The beams then distribute that load down through the support posts to the foundation.

Building up by adding square footage to the top of your home is often less expensive than adding a basement, but it depends on the specifics of your house, your property, and supply costs. Because building a basement requires excavation, it can be a more expensive option than building up.

Costs are guided by renovation scope, materials chosen, project duration, structural needs, and labor. Prioritizing tasks prevents unforeseen expenses.

Unless you have extensive experience in construction work, remodeling a basement is best left to a professional. There are several tasks associated with this project that require exact precision, including:

  • Replacing insulation 

  • Replacing carpet or other flooring 

  • Adding heating and cooling

  • Adjusting or adding walls and doors

  • Altering or adding plumbing elements

If any of these elements is done incorrectly, it could severely impact the quality of your basement remodel and be dangerous. Changing a basement often comes with code safety requirements, like egress windows and proper ventilation. Therefore, leaving it up to a professional is often the best decision.

Walkout basements are not generally included in a home’s square footage, although they may be if they meet certain conditions that depend on local regulations. A finished walkout basement used as a living space may be counted toward square footage in some locations as long as all codes for livable space are met.

The Seattle, WA homeowners’ guide to basement remodels

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