Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Seattle, WA

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.

Find Addition to existing structure builders in Seattle

Avatar for Home Care Contractors, LLC

Home Care Contractors, LLC

4.84(
19
)
Approved Pro

Home Care Contractors, LLC

4.84(
19
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
9 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


Excel General Contractor, LLC

4.86(
76
)
Approved Pro

Excel General Contractor, LLC

4.86(
76
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
51 years of experience

Excel General Contractor is a full service home remodeling and construction contractor. We offer a high level of customer service while maintaining fair pricing. Our team is small enough that you get individualized attention but big enough to get your project done effectively and efficiently. We do all projects from small repairs and renovations up to designing and building you a complete new custom home.

"Nate allowed me to order my bathtub myself, which was nice. Lowe's failing to deliver when promised, was not. This delayed the start, and although it did take longer than I expected, everything came out great. They did not charge me extra after the water damage was exposed, which was a relief. One of the other estimates I got from a general contractor was for 3x as much, AND they planned to add on after the wall was opened. The bathroom specialists wanted 150% of what we paid, and I think we ended up with better results."

Christopher B on March 2025

Excel General Contractor is a full service home remodeling and construction contractor. We offer a high level of customer service while maintaining fair pricing. Our team is small enough that you get individualized attention but big enough to get your project done effectively and efficiently. We do all projects from small repairs and renovations up to designing and building you a complete new custom home.

"Nate allowed me to order my bathtub myself, which was nice. Lowe's failing to deliver when promised, was not. This delayed the start, and although it did take longer than I expected, everything came out great. They did not charge me extra after the water damage was exposed, which was a relief. One of the other estimates I got from a general contractor was for 3x as much, AND they planned to add on after the wall was opened. The bathroom specialists wanted 150% of what we paid, and I think we ended up with better results."

Christopher B on March 2025


Platinum General Construction LLC

5.00(
6
)
Approved Pro

Platinum General Construction LLC

5.00(
6
)
Approved Pro
Customers say: Quick response
10 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!

"Look in pictures for my review "

Alicia G on August 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!

"Look in pictures for my review "

Alicia G on August 2025


Avatar for Wylie Painting & Construction, Inc.

Wylie Painting & Construction, Inc.

5.00(
11
)
Approved Pro

Wylie Painting & Construction, Inc.

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

At Wylie’s Reliable Painting Services, we understand the importance of a well-executed paint job in enhancing the beauty and value of your property. Whether you’re looking to refresh the interior of your home, update the exterior facade, or add a splash of color to your commercial space, our team of skilled professionals is here to bring your vision to life. From meticulous preparation to the final coat of paint, we pay attention to every detail to ensure a flawless finish that lasts for years to come. What sets us apart is our dedication to delivering not just a service, but an experience. From the moment you reach out to us, you can expect personalized attention and tailored solutions to suit your specific needs and budget. We believe in transparent communication, honest pricing, and timely project completion, so you can trust us to handle your painting project with professionalism and integrity.

"Wonderful to work with and beautiful results. They added a second floor to my house with the new primary bedroom and bathroom and we couldn’t be happier. Thank you for all your hard work"

Zachary F on May 2024

At Wylie’s Reliable Painting Services, we understand the importance of a well-executed paint job in enhancing the beauty and value of your property. Whether you’re looking to refresh the interior of your home, update the exterior facade, or add a splash of color to your commercial space, our team of skilled professionals is here to bring your vision to life. From meticulous preparation to the final coat of paint, we pay attention to every detail to ensure a flawless finish that lasts for years to come. What sets us apart is our dedication to delivering not just a service, but an experience. From the moment you reach out to us, you can expect personalized attention and tailored solutions to suit your specific needs and budget. We believe in transparent communication, honest pricing, and timely project completion, so you can trust us to handle your painting project with professionalism and integrity.

"Wonderful to work with and beautiful results. They added a second floor to my house with the new primary bedroom and bathroom and we couldn’t be happier. Thank you for all your hard work"

Zachary F on May 2024


Greg Appert Construction

5.00(
1
)
Approved Pro

Greg Appert Construction

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 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


Avatar for Mount Baker Remodeling

Mount Baker Remodeling

4.29(
7
)
Approved Pro

Mount Baker Remodeling

4.29(
7
)
Approved Pro
25 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.

" We engaged My Baker after our basement flooded a few years ago. They did very good work on a project despite it being during the pandemic. Their workers were respectful and the project was finished on budget at quality standards we were thrilled with. "

Jason S on July 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.

" We engaged My Baker after our basement flooded a few years ago. They did very good work on a project despite it being during the pandemic. Their workers were respectful and the project was finished on budget at quality standards we were thrilled with. "

Jason S on July 2025


Avatar for Fine Design Build, LLC

Fine Design Build, LLC

4.00(
13
)
Approved Pro

Fine Design Build, LLC

4.00(
13
)
Approved Pro
Customers say: Quick response
11 local quotes requested
21 years of experience

Fine Design Build is a third generation, design-build company. We shepherd our clients, working side by side, with architects and engineers that we have long-standing relationships with, pushing design past traditional scope limitations. We navigate through the challenging permitting, involving shorelines development, ECA steep slope areas, wetlands. Permitting can be a huge challenge particularly on waterfront parcels. We are experts at removing obstacles and creatively designing homes with minimal to zero impact to environment. After designing your home, we shepherd you through the challenging environment of building. We are very selective about our team and in our rare circumstance as a company, the general contractor, is onsite performing a good percentage of excavation, storm water management, septic, concrete, framing and finishes. We have a unique approach with full transparency where money is spent. The customer has their foot on the gas petal/brake throughout the entire build.

"Best contractor ever. At Fine Design Build the service received was like none other, quality, craftsmanship, in both work and design. We will be forever pleased with house build that we received."

Megane D on June 2025

Fine Design Build is a third generation, design-build company. We shepherd our clients, working side by side, with architects and engineers that we have long-standing relationships with, pushing design past traditional scope limitations. We navigate through the challenging permitting, involving shorelines development, ECA steep slope areas, wetlands. Permitting can be a huge challenge particularly on waterfront parcels. We are experts at removing obstacles and creatively designing homes with minimal to zero impact to environment. After designing your home, we shepherd you through the challenging environment of building. We are very selective about our team and in our rare circumstance as a company, the general contractor, is onsite performing a good percentage of excavation, storm water management, septic, concrete, framing and finishes. We have a unique approach with full transparency where money is spent. The customer has their foot on the gas petal/brake throughout the entire build.

"Best contractor ever. At Fine Design Build the service received was like none other, quality, craftsmanship, in both work and design. We will be forever pleased with house build that we received."

Megane D on June 2025


Avatar for Okay Construction LLC

Okay Construction LLC

5.00(
4
)
Approved Pro

Okay Construction LLC

5.00(
4
)
Approved Pro
6 years of experience
Free onsite estimate

We are 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 customer's interests, and make their concerns the basis of our business.

"I had Okay Construction renovate my entire house, including the kitchen. They also changed the electrical panel, all floors, windows, and doors; built new stairs; and installed several skylights. They can do pretty much anything you ask. Bo is very easy to communicate and work with. We needed to move in from another state, and he made sure my second floor was ready when we needed to move by having many staff members work long hours and on weekends. They turned my old house into a beautiful, bright home. Bo can recommend where to look for renovation materials and where to get contractor pricing. We applied for permits for all major projects, and Bo took care of them for us. They also have a warranty, so if anything goes wrong, he'd be happy to come back and fix it. Bo keeps his promises and is very patient. One of our ovens wasn't working right out of the box, and he took it out and re-installed it (and the replacement) many times. He also has many good ideas for small touch-up project"

Lynn X on October 2025

We are 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 customer's interests, and make their concerns the basis of our business.

"I had Okay Construction renovate my entire house, including the kitchen. They also changed the electrical panel, all floors, windows, and doors; built new stairs; and installed several skylights. They can do pretty much anything you ask. Bo is very easy to communicate and work with. We needed to move in from another state, and he made sure my second floor was ready when we needed to move by having many staff members work long hours and on weekends. They turned my old house into a beautiful, bright home. Bo can recommend where to look for renovation materials and where to get contractor pricing. We applied for permits for all major projects, and Bo took care of them for us. They also have a warranty, so if anything goes wrong, he'd be happy to come back and fix it. Bo keeps his promises and is very patient. One of our ovens wasn't working right out of the box, and he took it out and re-installed it (and the replacement) many times. He also has many good ideas for small touch-up project"

Lynn X on October 2025


Avatar for Rosell Home, LLC

Rosell Home, LLC

4.90(
26
)
Approved Pro

Rosell Home, LLC

4.90(
26
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 local quotes requested

Welcome to Rosell Home, LLC, where we bring over 20 years of experience to deliver the highest standard of craftsmanship and customer service in new home builds, residential remodels, and home additions. Our expertise extends to architectural and engineering services, ensuring your project meets both aesthetic and structural requirements. As part of our comprehensive offerings, we handle all permitting needs with the city, streamlining the process for you. In collaboration with our sister company, Washington Cabinet Co., we proudly manufacture modern and traditional cabinets tailored to your kitchen, bathroom, or closet needs. Our cabinet design center is conveniently located in downtown Redmond, WA. Come in, meet with our designer, and design your dream cabinetry with Washington Cabinet Co.As a locally owned business, we are deeply committed to our community and dedicated to making the remodeling process as effortless and rewarding as possible for our clients. Give us a call today!

"In addition to my other 5 star ratings I would like to add a five star appreciation for the entire teams respect for the home owners comfort and wishes as well as pride in their work."

Bev G on November 2023

Welcome to Rosell Home, LLC, where we bring over 20 years of experience to deliver the highest standard of craftsmanship and customer service in new home builds, residential remodels, and home additions. Our expertise extends to architectural and engineering services, ensuring your project meets both aesthetic and structural requirements. As part of our comprehensive offerings, we handle all permitting needs with the city, streamlining the process for you. In collaboration with our sister company, Washington Cabinet Co., we proudly manufacture modern and traditional cabinets tailored to your kitchen, bathroom, or closet needs. Our cabinet design center is conveniently located in downtown Redmond, WA. Come in, meet with our designer, and design your dream cabinetry with Washington Cabinet Co.As a locally owned business, we are deeply committed to our community and dedicated to making the remodeling process as effortless and rewarding as possible for our clients. Give us a call today!

"In addition to my other 5 star ratings I would like to add a five star appreciation for the entire teams respect for the home owners comfort and wishes as well as pride in their work."

Bev G on November 2023


Avatar for Renovate Design/Build

Renovate Design/Build

5.00(
13
)
Approved Pro

Renovate Design/Build

5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

Renovate Design/Build is a woman-owned family business servicing the Greater Seattle Area. 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 - you are never just a number. Please call us today for a free consultation!

"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 woman-owned family business servicing the Greater Seattle Area. 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 - you are never just a number. Please call us today for a free consultation!

"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

...
Showing 1-10 of 1057
FAQs for addition to existing structure building service projects in Seattle, WA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

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.