Top-rated basement remodelers.

Get matched with top basement remodelers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Basement remodelers in Sammamish

Avatar for Home Care Contractors, LLC
Home Care Contractors, LLC
10634 Riverside Dr E Ste 205
4.84(
19
)
Approved Pro
Home Care Contractors, LLC
10634 Riverside Dr E Ste 205
4.84(
19
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
8 years of experience

Home Care Contractors, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Overall good experience with HCC."

Jessica B on November 2021

Home Care Contractors, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

"Overall good experience with HCC."

Jessica B on November 2021


Your Home Builders, Inc.
1455 NW Leary Way
5.00(
1
)
Approved Pro
Your Home Builders, Inc.
1455 NW Leary Way
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Gil did an amazing job of figuring out exactly what I needed, and he hired an amazing crew to get it done. This is by far the best home renovation experience I've ever had. Gil and Oliver both were very thorough in figuring out what needed to be done, and every step of the way if there was ever any ambiguity, they asked questions and came up with great solutions for everything that came up. I have never before had such a good experience with a home renovation, and I wish all contractors were as good as them. My project was fairly involved, with a complete renovation of my kitchen, dining room, and laundry room, and yet the whole process took under a month to get done, and it was done right the first time. I wholeheartedly recommend Your Home Builders. No complaints at all."

j s on December 2022

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Gil did an amazing job of figuring out exactly what I needed, and he hired an amazing crew to get it done. This is by far the best home renovation experience I've ever had. Gil and Oliver both were very thorough in figuring out what needed to be done, and every step of the way if there was ever any ambiguity, they asked questions and came up with great solutions for everything that came up. I have never before had such a good experience with a home renovation, and I wish all contractors were as good as them. My project was fairly involved, with a complete renovation of my kitchen, dining room, and laundry room, and yet the whole process took under a month to get done, and it was done right the first time. I wholeheartedly recommend Your Home Builders. No complaints at all."

j s on December 2022


Greg Appert Construction
15803 Gold Bar Drive
5.00(
1
)
Approved Pro
Greg Appert Construction
15803 Gold Bar Drive
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
29 years of experience

We take great pride in our 5 plus years of experience, expertise, quality, and customer service that we provide to meet the consumer needs. It is our mission to provide excellent quality 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.

"I have been using their services for 10 years, and I greatly appreciate their integrity, trust, dedication, and the quality of their work. I would highly recommend them!"

Glenn B on January 2021

We take great pride in our 5 plus years of experience, expertise, quality, and customer service that we provide to meet the consumer needs. It is our mission to provide excellent quality 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.

"I have been using their services for 10 years, and I greatly appreciate their integrity, trust, dedication, and the quality of their work. I would highly recommend them!"

Glenn B on January 2021


WALT KANE CONSTRUCTION, LLC
5230 336TH AVE SE
5.00(
5
)
Approved Pro
WALT KANE CONSTRUCTION, LLC
5230 336TH AVE SE
5.00(
5
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

With over 30 years of experience, 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. // Payment: Cash, Zelle & Check // M-F: 7am - 5pm

"During the summer of 2024, we were looking to get our basement completely renovated and we are so lucky that we connected with Zach. Zach and his talented crew worked endlessly to achieve our vision for the space and get it done within an extremely fast timeline. The detail to attention, easy and seamless communication and the trust we had for his crew are among the many reasons we will always use Zach for our home projects. "

Morgan R on January 2025

With over 30 years of experience, 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. // Payment: Cash, Zelle & Check // M-F: 7am - 5pm

"During the summer of 2024, we were looking to get our basement completely renovated and we are so lucky that we connected with Zach. Zach and his talented crew worked endlessly to achieve our vision for the space and get it done within an extremely fast timeline. The detail to attention, easy and seamless communication and the trust we had for his crew are among the many reasons we will always use Zach for our home projects. "

Morgan R on January 2025


Vieshiek Construction, LLC
12637 88th Place Northeast
5.00(
1
)
Approved Pro
Vieshiek Construction, LLC
12637 88th Place Northeast
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

With over 30 years experience in the home improvement industry, Vieshiek Construction, LLC is your industry expert in Kirkland and the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. You can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"I have nothing bad to say about them and I would work with them again in a heartbeat. They are absolutely incredible, I had high expectations and they exceeded them."

Tess M on December 2019

With over 30 years experience in the home improvement industry, Vieshiek Construction, LLC is your industry expert in Kirkland and the surrounding areas. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. You can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"I have nothing bad to say about them and I would work with them again in a heartbeat. They are absolutely incredible, I had high expectations and they exceeded them."

Tess M on December 2019


Avatar for GMG Construction, Inc.
GMG Construction, Inc.
PO Box 477
New on HomeAdvisorNew on Angi
Approved Pro
GMG Construction, Inc.
PO Box 477
New on AngiNew on HomeAdvisor
Approved Pro
27 years of experience
Free onsite estimate

With over 20 years of experience, GMG Construction, Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!

With over 20 years of experience, GMG Construction, Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Call us today!


Avatar for BB-Builders-Pro LLC
BB-Builders-Pro LLC
801 SW 16th Street Suite 115
4.99(
37
)
Approved Pro
BB-Builders-Pro LLC
801 SW 16th Street Suite 115
4.99(
37
)
Approved Pro
Customers say: Quick response
96 local quotes requested
25 years of experience

committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"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!"

Anna C on March 2025

committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"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!"

Anna C on March 2025


Avatar for R&R General Contractor and Design, LLC
R&R General Contractor and Design, LLC
819 NE 151st St
5.00(
4
)
Approved Pro
R&R General Contractor and Design, LLC
819 NE 151st St
5.00(
4
)
Approved Pro
Free onsite estimate
Warranties offered

Our Vision: At RnR design build, We’re committed to changing how you experience home renovations. Too often, homeowners face stress, delays, and disappointment when working with separate design and construction teams. Our integrated design-build approach eliminates these challenges by providing a seamless experience from initial concept to final walkthrough. We believe in building lasting relationships with our clients, founded on trust, transparency, and exceptional results. Many clients return for future projects or refer us to friends and family which is the highest compliment we can receive. Our Mission: To provide top-quality design and construction services in a professional and timely manner that will have you wanting to return to RnR for future projects. This guides everything we do, from our initial consultation to the final reveal. We measure our success not just by the beauty of our completed projects, but by your satisfaction and delight.

"They blow our expectations, a great design concept in our master bathroom. Would highly recommend them.!"

undefined on June 2025

Our Vision: At RnR design build, We’re committed to changing how you experience home renovations. Too often, homeowners face stress, delays, and disappointment when working with separate design and construction teams. Our integrated design-build approach eliminates these challenges by providing a seamless experience from initial concept to final walkthrough. We believe in building lasting relationships with our clients, founded on trust, transparency, and exceptional results. Many clients return for future projects or refer us to friends and family which is the highest compliment we can receive. Our Mission: To provide top-quality design and construction services in a professional and timely manner that will have you wanting to return to RnR for future projects. This guides everything we do, from our initial consultation to the final reveal. We measure our success not just by the beauty of our completed projects, but by your satisfaction and delight.

"They blow our expectations, a great design concept in our master bathroom. Would highly recommend them.!"

undefined on June 2025


Avatar for Renovate Construction, LLC
Renovate Construction, LLC
1523 NW Ballard Way
4.98(
21
)
Approved Pro
Renovate Construction, LLC
1523 NW Ballard Way
4.98(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
7 years of experience

Renovate Design/Build is a full-service woman-owned residential remodeling firm servicing the Greater Seattle Area. When you hire Renovate Design/Build, you get expert service every step of your renovation, from floor plans to detailed design through construction. We specialize in basement remodels, bathrooms, kitchens, decks, additions, and ADUs. Each person on our team is an integral part of our company's success, providing excellent service and beautifully finished remodel projects for our clients. As a small business, every job is important to our team at Renovate and you are never just a number. Please feel free to contact us directly at 206-650-1287 or projects@renovatebuilt.com. You can also look at our work on our website, at www.renovatebuilt.com. We look forward to working with you! - The Renovate Team

"We worked with Renovate from August 2024 through April 2025. Our experience was exceptional. Ross, Eric, and Jeremiah were efficient and effective, treating our project with great care. The Renovate team stands out in several ways: - Their pricing is transparent. We paid an hourly cost and subcontractor costs, plus a fixed mark-up, which aligned incentives. Amanda provided receipts and timesheets regularly. - They have superb attention to detail. They pointed out issues we might have missed and ensured they were fixed. - They were super responsive, encouraging us to text or email any time and often responding quickly. They kept us updated on the timeline and explained any delays. - They have a strong client focus. They addressed subcontractor errors quickly and reminded us to ask for what we wanted, even if non-standard. They provided recommendations but let us make the final decisions. We highly recommend the Renovate team. For our more detailed review, see Google."

Mark V on May 2025

Renovate Design/Build is a full-service woman-owned residential remodeling firm servicing the Greater Seattle Area. When you hire Renovate Design/Build, you get expert service every step of your renovation, from floor plans to detailed design through construction. We specialize in basement remodels, bathrooms, kitchens, decks, additions, and ADUs. Each person on our team is an integral part of our company's success, providing excellent service and beautifully finished remodel projects for our clients. As a small business, every job is important to our team at Renovate and you are never just a number. Please feel free to contact us directly at 206-650-1287 or projects@renovatebuilt.com. You can also look at our work on our website, at www.renovatebuilt.com. We look forward to working with you! - The Renovate Team

"We worked with Renovate from August 2024 through April 2025. Our experience was exceptional. Ross, Eric, and Jeremiah were efficient and effective, treating our project with great care. The Renovate team stands out in several ways: - Their pricing is transparent. We paid an hourly cost and subcontractor costs, plus a fixed mark-up, which aligned incentives. Amanda provided receipts and timesheets regularly. - They have superb attention to detail. They pointed out issues we might have missed and ensured they were fixed. - They were super responsive, encouraging us to text or email any time and often responding quickly. They kept us updated on the timeline and explained any delays. - They have a strong client focus. They addressed subcontractor errors quickly and reminded us to ask for what we wanted, even if non-standard. They provided recommendations but let us make the final decisions. We highly recommend the Renovate team. For our more detailed review, see Google."

Mark V on May 2025


Avatar for ACS - Seattle, LLC
ACS - Seattle, LLC
4742 42nd Avenue Southwest, Suite 500
4.54(
40
)
Approved Pro
ACS - Seattle, LLC
4742 42nd Avenue Southwest, Suite 500
4.54(
40
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
20 local quotes requested

"Focused on your Satisfaction"-For over 21 years, Communication and Professionalism have been our top priorities. Consistently working hard to make your remodeling project a pleasant experience.

"Overall a good experience. We hired ACS to take down and rebuild a brick pillar supporting our front porch. Gary's crew was excellent. Although they only spoke Spanish they were helpful and did a good job communicating as much as they could about what they were doing and/or had done. We're very happy with the end product. Gary stayed true to his quote and the contract price. The project was more involved than I expected, but they came through and completed it on budget. My only complaint is that Gary was hard to get a hold of at times."

Stephanie S on August 2021

"Focused on your Satisfaction"-For over 21 years, Communication and Professionalism have been our top priorities. Consistently working hard to make your remodeling project a pleasant experience.

"Overall a good experience. We hired ACS to take down and rebuild a brick pillar supporting our front porch. Gary's crew was excellent. Although they only spoke Spanish they were helpful and did a good job communicating as much as they could about what they were doing and/or had done. We're very happy with the end product. Gary stayed true to his quote and the contract price. The project was more involved than I expected, but they came through and completed it on budget. My only complaint is that Gary was hard to get a hold of at times."

Stephanie S on August 2021

...
Showing 1-10 of 940

FAQs for basement remodeling projects in Sammamish, 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 Sammamish, WA homeowners’ guide to basement remodelings
From average costs to expert advice, get all the answers you need to get your job done.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
Apr 19, 2025
Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
Outdoor view of the modern house
Jun 16, 2025
Jun 16, 2025
Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
Jun 10, 2025
An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
Share project details to get started.