"For a arge scale project company, CB Anderson has been very flexible and easy to work with, for a smaller project like ours. That's given our family a sense of security that our Des Moines Remodel is in good hands."

Brad B. in September 2015

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In business since 2019

Seattle, WA·

Golesh Architecture

Mixed Use, Institutional, Residential , and 2 more

About us: "We seek to produce timeless architecture through careful study of spatial sequence, proportion, and detail. We work hard to achieve every client's dream while maximizing the value of every square foot of built space. For more information, please visit our website at www.golesh.com or email Luke directly at [email protected]"

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In business since 1998

Design Significance Architecture

Architect

About us: "Design Significance Architecture started in 1998, and has had one owner and one president. I have had one goal and that is to service the customer. Whether we are doing a project locally, or if we have to service our customers in another state, I am always there to answer any question, and at any time. We strive to offer the best quality design for all our clients. Please feel free to call me at (775) 847-7235. Please free to visit our website at www.dsa-architecture.org to view examples of our work and learn more about the company."

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5.0(1 Verified Rating)

Gold Bar, WA·

Greg Appert Construction

General Construction

"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. in January 2021

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Showing 1-9 of 54 results

Out of Network Addition Contractors in Seattle, WA

Northwest Homework, Inc.
2112 S. Spokane St.
Seattle, WA 98144
Lund D 2 C, Inc.
11489 Blue Herron Lane
Bainbridge Island, WA 98110
INTEGRITY HOMES & REMODELING
124 Swanson Ave
Port Townsend, WA 98368
KENG CONTRACTING LLC
2026 112 Place SE
Everett, WA 98208
Poche's Construction Services, LLC
1020 University St. , Unit 106
Seattle, WA 98101
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How much do addition contractors typically cost?

Seattle, Washington Average
$54,207
Typical Range
$28,138 - $96,111
Low End - High End
$3,586 - $150,000

Costs for related projects in Seattle, WA

Build a Barn, Shed or Playhouse
$1,775 - $4,702
Build an Addition
$28,138 - $96,111
Demo an Interior
$1,155 - $6,042
Perform Home Renovations and Repairs
$3,012 - $20,116
Remodel or Renovate a House
$18,867 - $77,849

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Related Projects in Seattle, WA

More Pros Near Seattle, WA

HomeAdvisor Community Rating

Overall Rating:

Seattle Addition Contractors are rated 4.9 out of 5 based on 596 reviews of 35 featured pros.

The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.

Things to Consider Before You Build an Addition:

What best describes this project?
What kind of addition do you want?
Select the rooms included in this project:
Bathroom
Kitchen
Bedroom(s)
Garage/Workshop
Living/Family room
Laundry/Mud room
Deck/Porch
Basement
Office(s)
Common area(s)

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Recent Requests for Home and Room Addition Builders in Seattle, Washington:

NewProject Location: Seattle, WA 98168
Date: 02/06/2023
Desired Completion Date: More than 2 months
Request Stage: Planning & Budgeting
Project Description: Build - Use existing architectural drawings
Comment: I want to get an estimate on the cost of adding onto our house. Room for a second bathroom and extend the kitchen and entryway
NewProject Location: Seattle, WA 98122
Date: 02/06/2023
Phone System Problem: 1 - Very Unsatisfied
Reason for Cable: 2
Desired Completion Date: Less than 2 months
Request Stage: Planning & Budgeting
Type of Addition: Second story addition
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Bathroom
Comment: I would like to get a quote for adding on a dormered bathroom to our second floor. There is attic space, but the space will need to be dormered.
NewProject Location: Seattle, WA 98108
Date: 02/05/2023
Desired Completion Date: More than 2 months
Request Stage: Planning & Budgeting
Type of Addition: Second story addition
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Bedroom(s)
Rooms Included:: Office(s)
Rooms Included:: Common area(s)
Rooms Included:: Bathroom
Rooms Included:: Deck/Porch
Comment: home built in 70's 3bed 1 bath 1000sqft, simply need more space. Looking to add on nice master and bath w/ walk in closet upstairs, office, and lounge area. Then downstairs remodeling to make kitchen bigger and possibly living room.
NewProject Location: Seattle, WA 98188
Date: 02/05/2023
Type of Addition: Ground level addition
Request Stage: Planning & Budgeting
Desired Completion Date: Timing is flexible
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Bathroom
Comment: I would like to get an estimate for building a new bathroom
NewProject Location: Seattle, WA 98119
Date: 02/04/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Type of Addition: Second story addition
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Bedroom(s)
Rooms Included:: Bathroom
Comment: We have an attic we'd like to finish. There's no stairs up there but there is a makeshift ladder and one quarter of it is already finished.
NewProject Location: Seattle, WA 98103
Date: 02/04/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Project Description: Design and build
NewProject Location: Seattle, WA 98125
Date: 02/04/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Type of Addition: Detached addition
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Kitchen
Rooms Included:: Bedroom(s)
Rooms Included:: Common area(s)
Rooms Included:: Bathroom
Rooms Included:: Garage/Workshop
NewProject Location: Seattle, WA 98107
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Type of Addition: Detached addition
Requires Work on Historical Structure: Yes
Request for Commercial Location: No
Project Description: Build - Use existing architectural drawings
Rooms Included:: Kitchen
Rooms Included:: Bedroom(s)
Rooms Included:: Bathroom
Comment: We have plans and a permit for remaking our garage into a DADU. Work required: Demo Existing Garage and Slab w Dump runs, Foundation - Insulation and Floor Heating, Foundation , Gutters and Downspouts, Drainage - foundation, SIPS - Walls and Roof panels - pre built off site, Assembly - Structure and Roof , Interior framing , Insulation, Drywall, Windows and Doors, Exterior Finish - Siding and Trim, Roofing, Deck - outside front door, Plumbing - Water Supply, Plumbing - Side Sewer Replacement, Plumbing - Rough-in, Plumbing - Fixtures, Electrical - Service to Meter Panel, Electrical - Rough in, Sub Panel and Home Runs, Electrical - Trim - switches and recepticals, Electrical - Fixtures, Tile Bathroom and Kitchen, Cabinets and Countertops, Painting - Exterior, Painting - Interior, Fans (Kitchen and Bath), HVAC - Heat Pump - Ductless Mini Split system, Landscaping - Update and repair backyard landscaping
NewProject Location: Seattle, WA 98168
Date: 01/2023
Type of Addition: Ground level addition
Request Stage: Planning & Budgeting
Desired Completion Date: More than 2 months
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
Rooms Included:: Bathroom
Comment: I need to add a bathroom on the garage that has been turn into a 4th bedroom. Possibly summer to start the project.
Project Location: Seattle, WA 98133
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Requires Work on Historical Structure: Yes
Request for Commercial Location: No
Project Description: Build - Use existing architectural drawings
What type of second floor addition will this be?: Full addition
Rooms Included:: Kitchen
Rooms Included:: Bedroom(s)
Rooms Included:: Living/Family room
Rooms Included:: Common area(s)
Rooms Included:: Bathroom
Rooms Included:: Garage/Workshop
Rooms Included:: Laundry/Mud room
Comment: Would like to expand our 1936 2bd/1ba house to a 3bd/2ba along with updating the electrical and plumbing.
Project Location: Seattle, WA 98103
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design - Create architectural drawings
What type of second floor addition will this be?: Full addition
Rooms Included:: Bedroom(s)
Rooms Included:: Common area(s)
Rooms Included:: Bathroom
Project Location: Seattle, WA 98177
Date: 01/2023
Desired Completion Date: Less than 2 months
Request Stage: Ready to Hire
Requires Work on Historical Structure: No
Request for Commercial Location: No
Project Description: Design and build
What type of second floor addition will this be?: Partial Addition
Rooms Included:: Bedroom(s)
Rooms Included:: Bathroom
Comment: we just purchased a small house Richmond Beach and would like to add a master bedroom and bath to capitalize on the view
Project Location: Seattle, WA 98144
Date: 01/2023
Request Stage: Ready to Hire
Project Description: Design and build
Desired Completion Date: Timing is flexible
Project Location: Seattle, WA 98168
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Project Description: Design and build
Project Location: Seattle, WA 98118
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Project Description: Design and build
Project Location: Seattle, WA 98105
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Project Description: Design and build
Comment: Build an additional bathroom in existing closet space. Approximately 4 1/2 x 5 1/2 ft
Project Location: Seattle, WA 98136
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Project Description: Build - Use existing architectural drawings
Comment: Permits have been issued. Project is to 1) build new dormers, and 2) add insulation and re-roof existing structure.
Project Location: Seattle, WA 98168
Date: 01/2023
Desired Completion Date: More than 2 months
Request Stage: Ready to Hire
Project Description: Build - Use existing architectural drawings
Comment: I do Contusion, I do framing picture framing I do painting I do sheetrock work.
Project Location: Seattle, WA 98115
Date: 01/2023
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Project Description: Build - Use existing architectural drawings