Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders 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.

Addition to existing structure builders in Seattle

Platinum General Construction LLC
6208 202nd St SW Unit 66
5.00(
5
)
Approved Pro
Platinum General Construction LLC
6208 202nd St SW Unit 66
5.00(
5
)
Approved Pro
Customers say: Quick response
9 years of experience
Free onsite estimate

With years in the industry here at Platinum General Construction LLC we pride our company on attention to detail, punctuality, 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. Our attention to detail is that of no other. We look forward to earning your business. Give us a call today!

"Platinum General Construction LLC was contacted after two initially hired contractors were incompetent in providing the remodeling services needed for our bathroom remodel in Dec/Jan 2025. Platinum stepped in and completed the work on time and as quoted. David was our primary contact. He was great as respects communication, working through issues, and coordinating with subcontractors. The remodel included heated tile floors, a curbless shower, toilet install, and beautiful tile work. We were pleased that Platinum got our project back on track and finished after dealing with the mis-steps of our original contractors."

Ron B on April 2025

With years in the industry here at Platinum General Construction LLC we pride our company on attention to detail, punctuality, 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. Our attention to detail is that of no other. We look forward to earning your business. Give us a call today!

"Platinum General Construction LLC was contacted after two initially hired contractors were incompetent in providing the remodeling services needed for our bathroom remodel in Dec/Jan 2025. Platinum stepped in and completed the work on time and as quoted. David was our primary contact. He was great as respects communication, working through issues, and coordinating with subcontractors. The remodel included heated tile floors, a curbless shower, toilet install, and beautiful tile work. We were pleased that Platinum got our project back on track and finished after dealing with the mis-steps of our original contractors."

Ron B on April 2025


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


Avatar for Modern Outdoor Builders LLC
Modern Outdoor Builders LLC
10717 Renton Ave S
5.00(
15
)
Approved Pro
Modern Outdoor Builders LLC
10717 Renton Ave S
5.00(
15
)
Approved Pro
Super Service Award
Customers say: Quick response
3 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's custom 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.

"Professional and on time service. Would recommend to anyone looking for help with their dreams. "

Jesse L on March 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's custom 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.

"Professional and on time service. Would recommend to anyone looking for help with their dreams. "

Jesse L on March 2025


Avatar for Patriot Elite Homes
Patriot Elite Homes
16212 Bothell Everett Hwy Suite F216
4.90(
40
)
Approved Pro
Patriot Elite Homes
16212 Bothell Everett Hwy Suite F216
4.90(
40
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
9 years of experience

At Patriot Elite Homes (formally Nightawk Construction LLC, we specialize in delivering high-quality residential construction and land improvement services across Snohomish and King County. Our team is committed to expert craftsmanship, clear communication, and lasting results. We offer complete drainage solutions, paver patios and walkways, septic system installations, and basement/foundation waterproofing to protect your property from the ground up. Our construction services include full-scale kitchen and bathroom remodels, whole-home renovations, and ADU design-build services tailored for functionality and value. Need more space or outdoor enhancements? We build custom decks, patio covers, fences, detached garages, and shops — all with structural integrity and style in mind. Whether you’re planning a remodel, expanding your living space, or solving site issues, Patriot Elite Homes brings professionalism and precision to every project.

"Top quality, skilled and professional, amazing value"

David B on September 2020

At Patriot Elite Homes (formally Nightawk Construction LLC, we specialize in delivering high-quality residential construction and land improvement services across Snohomish and King County. Our team is committed to expert craftsmanship, clear communication, and lasting results. We offer complete drainage solutions, paver patios and walkways, septic system installations, and basement/foundation waterproofing to protect your property from the ground up. Our construction services include full-scale kitchen and bathroom remodels, whole-home renovations, and ADU design-build services tailored for functionality and value. Need more space or outdoor enhancements? We build custom decks, patio covers, fences, detached garages, and shops — all with structural integrity and style in mind. Whether you’re planning a remodel, expanding your living space, or solving site issues, Patriot Elite Homes brings professionalism and precision to every project.

"Top quality, skilled and professional, amazing value"

David B on September 2020


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


Avatar for T AM I LLC
T AM I LLC
4725 212th St SW
4.50(
1
)
Approved Pro
T AM I LLC
4725 212th St SW
4.50(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"also remodeled my bathroom and back yard very happy"

Lois P on December 2024

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"also remodeled my bathroom and back yard very happy"

Lois P on December 2024


Avatar for Mount Baker Remodeling
Mount Baker Remodeling
2534 34th Avenue South
4.17(
6
)
Approved Pro
Mount Baker Remodeling
2534 34th Avenue South
4.17(
6
)
Approved Pro
24 years of experience
Free onsite estimate

Since 2000 Mount Baker Remodeling has been expanding its circle of clients through a variety of high quality remodeling projects - kitchens, baths, basements, additional dwelling units, and more. We look forward to helping you create a beautiful, enjoyable and practical backdrop to your home life - a home remodeled for better living. MBR gives special attention to customized interior/exterior architectural and decorative details that create one-of-a kind living spaces. Mount Baker Remodeling uses the highest quality products to ensure that your remodel stands the test of time. We strive to complete every project, large or small, on time and on budget. With team collaboration, we turn your vision into reality.

"Has a number of improvements done to our unit including installation of a kitchen exhaust fan and related ducting, cabinet hanging, etc. Very pleased with the quality of work, thoughtful problem solving and most of all communication. Definitely recommend Mt. Baker Remodeling and their staff."

Robert P on June 2025

Since 2000 Mount Baker Remodeling has been expanding its circle of clients through a variety of high quality remodeling projects - kitchens, baths, basements, additional dwelling units, and more. We look forward to helping you create a beautiful, enjoyable and practical backdrop to your home life - a home remodeled for better living. MBR gives special attention to customized interior/exterior architectural and decorative details that create one-of-a kind living spaces. Mount Baker Remodeling uses the highest quality products to ensure that your remodel stands the test of time. We strive to complete every project, large or small, on time and on budget. With team collaboration, we turn your vision into reality.

"Has a number of improvements done to our unit including installation of a kitchen exhaust fan and related ducting, cabinet hanging, etc. Very pleased with the quality of work, thoughtful problem solving and most of all communication. Definitely recommend Mt. Baker Remodeling and their staff."

Robert P on June 2025


Avatar for ProWorks Enterprises
ProWorks Enterprises
PO Box 373
4.71(
21
)
Approved Pro
ProWorks Enterprises
PO Box 373
4.71(
21
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
8 years of experience

ProWorks Enterprises is a general contractor offering residential, commercial, and government services on the Kitsap Peninsula and surrounding areas. Our company is built on the principles of high quality work, high quality materials, and excellent service. We're not always the cheapest option, but we provide the best value by using materials and practices that are long-lasting, low-maintenance, and environmentally friendly. Our in-house specialties include excavation, remodeling, concrete, retaining walls, landscaping, and more. ProWorks Enterprises is a 100% Veteran Owned and Operated Business. With our backgrounds of military and law enforcement, we also offer security consulting and construction services to keep your home and business safe.

"They really do excellent work and staff are friendly andr very professional. I'm a satisfied customer and I highly recommend them."

Bill Q on October 2024

ProWorks Enterprises is a general contractor offering residential, commercial, and government services on the Kitsap Peninsula and surrounding areas. Our company is built on the principles of high quality work, high quality materials, and excellent service. We're not always the cheapest option, but we provide the best value by using materials and practices that are long-lasting, low-maintenance, and environmentally friendly. Our in-house specialties include excavation, remodeling, concrete, retaining walls, landscaping, and more. ProWorks Enterprises is a 100% Veteran Owned and Operated Business. With our backgrounds of military and law enforcement, we also offer security consulting and construction services to keep your home and business safe.

"They really do excellent work and staff are friendly andr very professional. I'm a satisfied customer and I highly recommend them."

Bill Q on October 2024


D Hill Construction, LLC
3019 S Angeline St
5.00(
4
)
Approved Pro
D Hill Construction, LLC
3019 S Angeline St
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

Customer satisfaction is what determines our success, which is why we take a hands-on approach. When interacting with Porter Global Construction, LLC, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your project needs. Contact us today for a fair and accurate estimate of your project. We look forward to adding you to our long and growing list of happy customers.

"Ladale and his crew did a wonderful work. I would recommend them to anyone."

Michael V on November 2019

Customer satisfaction is what determines our success, which is why we take a hands-on approach. When interacting with Porter Global Construction, LLC, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your project needs. Contact us today for a fair and accurate estimate of your project. We look forward to adding you to our long and growing list of happy customers.

"Ladale and his crew did a wonderful work. I would recommend them to anyone."

Michael V on November 2019

...
Showing 1-10 of 937
The Seattle, WA homeowners’ guide to addition to existing structure building services
From average costs to expert advice, get all the answers you need to get your job done.
A girl playing with teddy bear while smiling mother and grandmother at kitchen island
Mar 31, 2025
Mar 31, 2025
Explore how much quartzite countertops cost based on factors such as their size, location, design, finish, and labor rates.
Interior view of sunroom
Jul 9, 2025
Jul 9, 2025
Budget for sunroom addition costs based on factors such as room type, site prep, professional labor, features, permits, prefab vs. custom designs, and more.
master bedroom with fireplace
Jun 26, 2025
Jun 26, 2025
Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.
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.
Share project details to get started.