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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

2 neighbors recently requested a quote
Recommended by9%of homeowners
Avatar for Johnson and Sons Construction
Johnson and Sons Construction
4.9(
113
)
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%
5 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 Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
139
)
Basement - Remodel

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 rate100%
272 neighbors recently requested a quote
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

"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
5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for A TO Z HOME REMODELING LLC
A TO Z HOME REMODELING LLC
5.0(
30
)
Basement - Remodel

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

"We hired A to Z home remodeling replace our 60 year old bathtub with a shower. Shay was our Manager, explained the process thoroughly and answered all our questions. Eric extremely knowledgeable and up to the task of dealing with our old home and all its quirks. I would recommend A to Z for anyone looking for a professional remodel that will last for many years."
My jobs
My jobs
My jobs
My jobs
My jobs

+7

Response time12 hrs
Response rate99%
5 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%
514 neighbors recently requested a quote
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Showing 1-10 of 603
Basement Remodel questions, answered by experts

A finished basement must have a heat and electrical supply with an entrance that meets building code requirements, such as a stairwell to the home's main living space. It often must include finished walls, ceilings, and floors. If the finished basement includes a bedroom, it should have a heat source, an egress window, and a closet.

Remodeling, as opposed to finishing, means altering an already finished basement by adding a bathroom, bedroom, or living area.

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.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

The best type of basement ventilation system depends on your budget, the moisture in your basement’s air, and the types of windows you have down there. You should consider all of these factors when choosing a ventilation system. However, the most effective method for basement ventilation is an energy recovery ventilator (ERV) or a whole-house ventilation system, which preheats or precools incoming air from the outside while also managing water vapor.

Physically, the most challenging part of finishing a basement is installing egress windows or doors when the space is below ground level. Mentally, the hardest part may be envisioning the project and planning around load-bearing and mechanical obstacles.

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.