Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Lynnwood, 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 Lynnwood

Platinum General Construction LLC

6208 202nd St SW Unit 66
5.00(
6
)
Approved Pro

Platinum General Construction LLC

6208 202nd St SW Unit 66
5.00(
6
)
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!

"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 Cox Custom Remodeling, LLC.

Cox Custom Remodeling, LLC.

PO Box 661
4.59(
49
)
Approved Pro

Cox Custom Remodeling, LLC.

PO Box 661
4.59(
49
)
Approved Pro
Customers say: Super punctual
147 local quotes requested
16 years of experience

Cox Custom Remodeling opened its doors in 2009, when the economy was dealing the construction trade its blows, and remodeling work was hard to find. We have been a company on the grow ever since. Our clients appreciate our candid attitude and straight up pricing. James and his crew offer master carpentry in all areas of home improvement. With over a decade of experience, James will provide you with the skill, quality craftsmanship, organization, and professionalism, that is needed to bring your home improvement vision to realization. James has an excellent relationship with a variety of home improvement subcontractors and a local lumber yard & home improvement store. Cox Custom Remodeling is your one call provider for any construction & remodeling venture. Also serving surrounding areas in Puget Sound.

"James and his crew at Cox Custom Remodeling did a great job with our bathroom remodel. Our house was built in 1900 and the nonstandard framing made things more complicated. His lead, Dan was particularly great, taking the extra time to understand components we picked that were new to him. James always had a positive attitude, showed up when he indicated and got things done. Low dust, protection for floors and respect for the rest of the house while the construction was going on. James also provided the best tile guy, Eugene, that did a fantastic job with natural stone and the complicated very fragile mosaic. We would definitely use Cox Custom Remodeling again. Great job guys!"

Jay P on June 2021

Cox Custom Remodeling opened its doors in 2009, when the economy was dealing the construction trade its blows, and remodeling work was hard to find. We have been a company on the grow ever since. Our clients appreciate our candid attitude and straight up pricing. James and his crew offer master carpentry in all areas of home improvement. With over a decade of experience, James will provide you with the skill, quality craftsmanship, organization, and professionalism, that is needed to bring your home improvement vision to realization. James has an excellent relationship with a variety of home improvement subcontractors and a local lumber yard & home improvement store. Cox Custom Remodeling is your one call provider for any construction & remodeling venture. Also serving surrounding areas in Puget Sound.

"James and his crew at Cox Custom Remodeling did a great job with our bathroom remodel. Our house was built in 1900 and the nonstandard framing made things more complicated. His lead, Dan was particularly great, taking the extra time to understand components we picked that were new to him. James always had a positive attitude, showed up when he indicated and got things done. Low dust, protection for floors and respect for the rest of the house while the construction was going on. James also provided the best tile guy, Eugene, that did a fantastic job with natural stone and the complicated very fragile mosaic. We would definitely use Cox Custom Remodeling again. Great job guys!"

Jay P on June 2021


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


Excel General Contractor, LLC

P O Box 1350
4.86(
76
)
Approved Pro

Excel General Contractor, LLC

P O Box 1350
4.86(
76
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
41 local quotes requested

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


Avatar for Fine Design Build, LLC

Fine Design Build, LLC

6523 California Avenue Southwest
4.00(
13
)
Approved Pro

Fine Design Build, LLC

6523 California Avenue Southwest
4.00(
13
)
Approved Pro
Customers say: Quick response
14 local quotes requested
20 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 Yelson LLC

Yelson LLC

12428 Highway 99, STE 53
5.00(
2
)
Approved Pro

Yelson LLC

12428 Highway 99, STE 53
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

Our mission is to be a contractor that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"We very enjoyed working with Ihor and his crew, all of whom were immensely respectful to our home, focused on performing quality work with an eye for detail, and surprisingly quick in completing the job without cutting corners. Ihor's communication throughout both projects, the deck build and basement leveling/flooring, was specific and timely. I have no hesitation in recommending Ihor and look forward to working with him again when the next project calls."

Sean O on June 2024

Our mission is to be a contractor that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"We very enjoyed working with Ihor and his crew, all of whom were immensely respectful to our home, focused on performing quality work with an eye for detail, and surprisingly quick in completing the job without cutting corners. Ihor's communication throughout both projects, the deck build and basement leveling/flooring, was specific and timely. I have no hesitation in recommending Ihor and look forward to working with him again when the next project calls."

Sean O on June 2024


Cedarbrook Construction, LLC

721 Avenue D
5.00(
2
)
Approved Pro

Cedarbrook Construction, LLC

721 Avenue D
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
46 local quotes requested

Cedarbrook Construction, LLC - Your trusted remodeling experts in Seattle. Transform your kitchen and bathroom with our top-notch craftsmanship. Contact us today for a stunning home makeover!

"CJ and his team were great! They showed up on time and did an excellent job laying down tarps and cleaning up at the end of each day so that the rest of the house didn’t become a mess. The tile turned out beautifully! I enjoy it everyday ❤️"

Stephanie L on August 2022

Cedarbrook Construction, LLC - Your trusted remodeling experts in Seattle. Transform your kitchen and bathroom with our top-notch craftsmanship. Contact us today for a stunning home makeover!

"CJ and his team were great! They showed up on time and did an excellent job laying down tarps and cleaning up at the end of each day so that the rest of the house didn’t become a mess. The tile turned out beautifully! I enjoy it everyday ❤️"

Stephanie L on August 2022


Avatar for Okay Construction LLC

Okay Construction LLC

7345 164th Avenue NE, Suite 1268
5.00(
4
)
Approved Pro

Okay Construction LLC

7345 164th Avenue NE, Suite 1268
5.00(
4
)
Approved Pro
5 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 Classic Remodeling NW Inc

Classic Remodeling NW Inc

9502 19th Ave SE
4.66(
35
)
Approved Pro

Classic Remodeling NW Inc

9502 19th Ave SE
4.66(
35
)
Approved Pro
Customers say: Quality work
41 local quotes requested
16 years of experience

At Classic Remodeling NW. Inc. our mission is to build lifelong family relationships with our clients, co-workers and community neighborhoods through the remodeling process. Our guiding principles are those of commitment, honesty and personal accountability through a high level of communication and respect for one another. We can build or remodel any part of your house to make your dreams come true! Communication is a tool we use every day to make sure we know what you want. We keep your home neat and clean the entire time we are working and make sure that your satisfied. With Classic Remodeling NW Inc., you are not just a customer, you are family. Our team gets to know you personally so we can make sure your dream will come to life and you will be more than satisfied with the results, and the cost! We build our team on "Honesty, Ethics, and Morals". Let us show you the Classic Remodeling NW Inc. difference!

"I am a repeat customer, so I knew the carpenter, Joe, coming in. I started by using their design contractor. I gave her the colors and ideas (beach theme, ceramic wood-look floor tiles), and she pulled the rest together. Invaluable because I can't trust my own taste. They removed a square shower in the corner and a set of shelves next to it, and glassed in that end of the room for a full shower. We put tile down along the whole room, with a recessed shower pan, and a linear drain against the wall. Joe built-in medicine cabinets, and trim all around the room, per my design pictures. The subs included a glass door guy, the plumber, the tiler, painter, and the countertop slab tiler. We also had some work done in our hallway. They removed the single boob light from the middle, and installed two recessed lights on either end, along with putting two switch boxes on either end of the hallway. Joe built a floor to ceiling cabinet in a 13” dead space at the end of the hallway, which included a laundry hamper on tracks, cubbies, and shelves. And then on a whim, I asked to have our old hallway linen cupboard doors replaced to match the new ones. We had two leaks during and after, but one reason I would use them again, is how they handled both times. One was a leak from the plug on the toilet supply. We found it on a Saturday morning, and I ended up waking up our carpenter with my text. He came out and figured it out and fixed it by 1. The other one was after everything was done and cleaned up, and we had paid for everything. The basement bathroom ceiling, fan, and wall below the master was wet one day, and we realized a joint in the pipe from the master toilet to the stack was slowly dripping between the two rooms. I texted Joe again, and he referred me to our GC, who came out with a plumber and fixed it. They had to make a hole in the downstairs drywall, so he has been coming back regularly to put three layers of mud on the new drywall. I was so sure that they would regretfully find that it wasn't their fault and we would have to deal with the cost and bother of finding a plumber and carpenter. Start to finish, it took about four months, but three weeks of that was the initial tile order, and another three for an incorrect tile order."

JOELLE B on March 2019

At Classic Remodeling NW. Inc. our mission is to build lifelong family relationships with our clients, co-workers and community neighborhoods through the remodeling process. Our guiding principles are those of commitment, honesty and personal accountability through a high level of communication and respect for one another. We can build or remodel any part of your house to make your dreams come true! Communication is a tool we use every day to make sure we know what you want. We keep your home neat and clean the entire time we are working and make sure that your satisfied. With Classic Remodeling NW Inc., you are not just a customer, you are family. Our team gets to know you personally so we can make sure your dream will come to life and you will be more than satisfied with the results, and the cost! We build our team on "Honesty, Ethics, and Morals". Let us show you the Classic Remodeling NW Inc. difference!

"I am a repeat customer, so I knew the carpenter, Joe, coming in. I started by using their design contractor. I gave her the colors and ideas (beach theme, ceramic wood-look floor tiles), and she pulled the rest together. Invaluable because I can't trust my own taste. They removed a square shower in the corner and a set of shelves next to it, and glassed in that end of the room for a full shower. We put tile down along the whole room, with a recessed shower pan, and a linear drain against the wall. Joe built-in medicine cabinets, and trim all around the room, per my design pictures. The subs included a glass door guy, the plumber, the tiler, painter, and the countertop slab tiler. We also had some work done in our hallway. They removed the single boob light from the middle, and installed two recessed lights on either end, along with putting two switch boxes on either end of the hallway. Joe built a floor to ceiling cabinet in a 13” dead space at the end of the hallway, which included a laundry hamper on tracks, cubbies, and shelves. And then on a whim, I asked to have our old hallway linen cupboard doors replaced to match the new ones. We had two leaks during and after, but one reason I would use them again, is how they handled both times. One was a leak from the plug on the toilet supply. We found it on a Saturday morning, and I ended up waking up our carpenter with my text. He came out and figured it out and fixed it by 1. The other one was after everything was done and cleaned up, and we had paid for everything. The basement bathroom ceiling, fan, and wall below the master was wet one day, and we realized a joint in the pipe from the master toilet to the stack was slowly dripping between the two rooms. I texted Joe again, and he referred me to our GC, who came out with a plumber and fixed it. They had to make a hole in the downstairs drywall, so he has been coming back regularly to put three layers of mud on the new drywall. I was so sure that they would regretfully find that it wasn't their fault and we would have to deal with the cost and bother of finding a plumber and carpenter. Start to finish, it took about four months, but three weeks of that was the initial tile order, and another three for an incorrect tile order."

JOELLE B on March 2019


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

...
Showing 1-10 of 995
FAQs for addition to existing structure building service projects in Lynnwood, WA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Lynnwood, 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 renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.