Top-rated addition to existing structure builders.

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

Avatar for Topline Builders and Renovation, LLC
Topline Builders and Renovation, LLC
5.0(
115
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"We hired Topline Builders and Renovations for a full home addition, adding nearly 600 square feet to our main floor. From the very first consultation, Ben walked us through the architectural plans, structural requirements, and permitting process with the city. We were nervous about taking on such a large construction project, but they made it feel organized and manageable. The framing crew worked efficiently, inspections passed without delays, and the final finishes blended seamlessly with the existing structure. You honestly can?t tell where the old house ends and the addition begins. Communication was consistent throughout the entire process. This wasn?t just a contractor showing up ? this felt like a professional construction team managing every detail properly."
Topline Builders
Bathroom Remodel Renton
4 neighbors recently requested a quote
Avatar for Johnson Custom Builders
Johnson Custom Builders
4.9(
101
)

Serving Sammamish, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Ryan responded quickly and we were able to discuss the scope of our project. He followed up by talking to the city building department to determine what was possible and proposed a plan to get started. He also talked with us about other projects we had in mind to update our existing home. Very professional!"
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

Response time11 hrs
12 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Puget Sound Builders & Renovation
Puget Sound Builders & Renovation
5.0(
78
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2006

Credit card accepted

Customers say: True professional

"Puget Sound Builders & Renovation did an excellent job on our basement remodeling. The work was completed with great attention to detail and top-quality craftsmanship. A special thanks to the Marry, who was professional, skilled, and very helpful throughout the process. The final result exceeded our expectations?highly recommended!"
Bathroom Renovation
Basement Remodel
Bathroom Renovation
Basement Remodel
Kitchen Remodeling

+23

103 neighbors recently requested a quote
Recommended by1%of homeowners
Avatar for Topaz Remodeling, Inc.
Topaz Remodeling, Inc.
5.0(
137
)

Serving Sammamish, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"We hired Topaz Remodeling and Yoni for a home addition to create a bigger living room and extra bedroom. The project involved framing, roofing, and major structural work - and Yoni handled it like a pro. He stayed on top of scheduling, inspections, und kept us updated every step of the way. The new space blends seamlessly with our original house. We are beyond happy with the results!"
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel
Bathroom Remodel
Kitchen Remodel

+53

Response time10 hrs
Response rate98%
221 neighbors recently requested a quote
Avatar for Bello Home Solutions LLC
Bello Home Solutions LLC
5.0(
19
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"After experiencing water damage to my kitchen/dining room, I sought a contractor to do drywall, flooring & painting. In addition, to construct a new pantry door, and change out my remaining, first floor hardwoods for porcelain tile. I immediately felt a "good vibe" from Yariel from Bello Home Solutions. He was organized/systematic, detail oriented, very "engaged" with my project needs and personable. He and the Bello Home solutions team were expeditious and did high quality work. Yariel had great suggestions, and was easily reached when I had questions. I felt very comfortable giving the Bello team access to my home when I was away. Bello Home solutions did a fantastic job and I am already mentally planning my next home construction project with them."
General Remodeling Project
Kitchen and Bath Remodeling Project
Kitchen and Bath Remodeling Project
Additional Photos
Additional Photos

+19

Response time8 hrs
Recommended by84%of homeowners
Avatar for Treiber Building, LLC
Treiber Building, LLC
4.9(
12
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2016

Free estimates

Offers commercial services

"We had a great experience working with Treiber Building LLC. They were great at communicating every step of the way and provided great suggestions which helped guide our decision making. The billing process was transparent. The quality of the work was excellent and we were able to work through issues that came up, which is inevitable in a project the size of our renovation. We faced additional challenges due to the Corona Virus lock down but they handled this professionally while adhering to all state guidelines. We could not be happier with their service and plan to go to them for future work."
Kitchen
Living Room
Kitchen
Living Room
Deck Progress Pic

+1

Response time2 days
7 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Classic Remodeling NW Inc
Classic Remodeling NW Inc
4.5(
45
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"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."
Granite countertop with polished finish
Walk-in shower big enough to escape in
Long view shot of kitchen to back door
Kitchen Storage and Refrigerator
Long view shot of kitchen from back door

+20

Response rate90%
3 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Lopez Bros Construction
Lopez Bros Construction
5.0(
10
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Highly recommend Lopez Bros Construction for any remodeling and major home repairs. We completed major home repair and remodeling, including bathroom shower repair and remodeling, Kitchen and Living Room ceiling/internal skylight enhancements, Interior and Deck Painting, and Basement Remodeling. Ray has been always going above and beyond in delivering the results. He will make sure the details and end results are perfect. His team's integrity is unquestionable, responsiveness and quality are top notch. Given the multiple projects he's dealing with, his crew still manage to get the repairs and remodeling done on time, as promised. I would hire Lopez Bros Construction again for my next project."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time3 days
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Northwest Builders & Renovation, Inc.
Northwest Builders & Renovation, Inc.
4.6(
79
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"recently hired Northwest Builders & Renovation to build my garage, and I couldn?t be happier with the results. From start to finish, their team was professional, responsive, and detail-oriented. The communication was clear every step of the way, and they delivered exactly what they promised ? on time and within budget. The quality of the framing, concrete, and finish work exceeded my expectations. They took care of everything efficiently, handled permits smoothly, and left the site clean every day. It?s rare to find contractors this reliable and dedicated to doing the job right. I highly recommend Northwest Builders & Renovation to anyone looking for skilled, honest professionals who truly care about their work."
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025
House Remodel, 2025

+32

Response time3 hrs
Response rate99%
37 neighbors recently requested a quote
...
Showing 1-10 of 596
FAQs for addition to existing structure building service projects in Sammamish, 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 Sammamish, 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.