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Home Addition Contractors in Seattle, WA

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Prescreened Room Addition Contractors in Seattle, WA

    Integrity Maintenance and Repair LLC Logo
    Lake Stevens, WA·

    Kitchen Remodels, Bathroom - Remodel

    "We were very happy with his work with him and the overall project. I would highly recommend him."

    Rebecca M. in November 2022

    II
    Seattle, WA·

    Expert Remodeling

    "I would like them again."

    Peggy F. in July 2022

    Joseph Greif Architects, PLLC Logo
    Seattle, WA·

    Home Design

    "Joseph Grief is extremely talented and we thoroughly enjoy working with him!"

    Buddy S. in June 2016

    DH
    Seattle, WA·

    Additions & Remodeling

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

    Michael V. in November 2019

    Sound Construction Logo
    Seattle, WA·

    Additions and Remodels

    "They helped us increase the value of our house exponentially! Jason is very reliable and fairly priced! I would highly recommend them!"

    Melissa C. in October 2021

    CA
    Seattle, WA·

    Restaurant Design - Including Kitchens & Interiors, Architecture, Commercial Design - Retail, Offices & Medical , and 1 more

    "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

    Golesh Architecture Logo

    In business since 2019

    Seattle, WA·

    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]"

    DS

    In business since 1998

    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."

    GA
    Gold Bar, WA·

    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

Showing 1-9 of 54 results

Out of Network Addition Contractors in Seattle, WA

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

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

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