How much do addition contractors typically cost?
- Portland, Oregon Average$45,761
- Typical Range$19,241 - $69,327
- Low End - High End$4,500 - $100,000
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Service Pros
JB
North Plains, OR·
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"Jay & his crew were wonderful. It was nice to have such a pleasant & professional group at our house. The work was great and Jay was very helpful in his recommendations for our house painting project."
Laura R. in October 2011
DD
Portland, OR·
Carpentry Framing, Deck Installs, Deck Repair , and 5 more
"Dan is a pro, super easy to work with, and a perfectionist. We've hired D&D 5 times for 2 deck projects, siding and window repair, and a small remodeling job. I enthusiastically recommend Dan without hesitation. His work is always flawless."
Keith L. in June 2024
GC
Vancouver, WA·
Decks, Bathroom Remodels
"We needed our deck redone so it is all one level and a new patio/deck cover installed. This was not an easy task because they had to raise portions of the deck and run the boards in one direction. All of this with using only the existing decking. They did an amazing job and the deck is actually more solid now than before. They did everything we asked of them and then some. The patio/deck cover is top notch. It is a 16 foot by 30 foot cover so it is not something small. They used joist hangers and hurricane braces so this cover/awning will never move. There are a lot of words there to say that we would absolutely hire this company again. The whole crew is professional, experienced and customer friendly. Amazing work. Thank you."
Mike S. in November 2023
Salem, OR·
Home Improvement, Home Improvement, Drywall , and 4 more
"They were very easy to work with and very kind I got exactly what I asked for. They pay close attention to detail. Theyâ  re very clean and thorough! They do everything to please the client"
Luis S. in June 2023
Salem, OR·
Painting - Residential and Commercial, Roofing & Siding, Flooring , and 2 more
"Chris and Chris were great. I had a complete kitchen remodel down to studs, lots of rot. New cabinets , paint , counters and floors . They were upfront about the total cost from ghe start and all of their work was very good. They worked around my work schedule. Love my new kitchen."
AB03A84F24E4F6D54BE22D676A20A9BB7160D62FC4F4148E969F27C5CCD17C50 9. in March 2025
ZC
Lake Oswego, OR·
Kitchen Remodeling, Mid Priced Remodel, Award-Winning Design Team , and 2 more
"Ziebart Construction did an ADU Garage Conversion for us for our adult foster care facility. Very happy from design to finish."
Mimi T. in October 2019
Beaverton, OR·
Framing, Patio Covers/Decks, Remodeling
"Outstanding work. Called the same day we put in the request. Can out to look at the project same day. Friendly and knows his work. Did the job wonderfully. He is now our go to person."
Michael H. in June 2018
RC
Sherwood, OR·
Additions & Remodels, Roofing, Decks & Siding, Residential & Commercial , and 5 more
"Resolution Construction did a full kitchen remodel for us. It looks great and they really followed our vision. They had good communication and answered questions and made changes when necessary. We would recommend them to others!"
Erin O. in November 2024
Portland, OR·
ADUs, Garage Remodels, Personal Sheds , and 1 more
"F.J.S. Construction was easy to work with, very helpful in every step of the way. We love our beautiful new space, and I appreciate how they ran according to schedule and the attention to detail they took."
Krystal S. in March 2023
Showing 10-18 of 27 results
Costs for related projects in Portland, OR
- Build a Barn, Shed or Playhouse$1,350 - $5,000
- Build an Addition$19,241 - $69,327
- Demo an Interior$2,407 - $8,433
- Perform Home Renovations and Repairs$3,536 - $20,850
- Remodel or Renovate a House$17,732 - $82,222
Frequently asked questions
- It’s important that you verify their license is still in good standing. Also keep in mind that certain states or provinces don’t require licensing if the job is under a certain dollar amount.
- You can find a list of your state’s licensing requirements on the HomeAdvisor website. Before you get to work with the pro, make sure their qualifications are current and acceptable to you.
- It is always a good idea to get a copy of the pro’s insurance certificate for future records, and in case anything happens. This is a good way to feel more secure in your home project, and to weed out potential scammers.
HomeAdvisor makes it easy to connect with pros near you. You can read reviews, get quotes and book appointments all in one place.
Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
You can use HomeAdvisor to help evaluate a contractor’s qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a pro’s HomeAdvisor profile, and sometimes, his or her website.
Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
- Have you completed a job like this before?
- Do you have a list of references I can contact?
- When are you able to start the job?
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
- How many years of experience do you have?
- What’s your permanent business address?
- Are you licensed to work in my area?
- When did you earn your business license?
- How do you handle warranty service complaints?
- Do you have worker’s compensation, property damage and personal liability insurance?
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Related Projects in Portland, OR
HomeAdvisor Community Rating
Overall Rating:
Portland Addition & Remodeling Contractors are rated 4.9 out of 5 based on 252 reviews of 252 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.
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Recent Job Requests for Addition & Remodeling Contractors in Portland, OR
Project Location: Portland, OR Date: 02/04/24Type of Addition: Second story additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: looking for roughly 800 square foot addition , be bathroom upstairs and master bedroom and new kitchen dining area and bathroom down stairs .Project Location: Portland, OR Date: 02/02/24What types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Type of Addition: Second story additionWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Project Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/31/24Type of Addition: Ground level additionWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Project Description: Build - use existing architectural drawingsWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/30/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/29/24Type of Addition: Second story additionWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Project Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/28/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Project Location: Portland, OR Date: 01/27/24Type of Addition: Detached additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: OtherComment: Looking to have 2 car detached garage built, possibly with apartment above.Project Location: Portland, OR Date: 01/27/24Reason for Cable: 1Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: KitchenComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/25/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: OtherComment: Tree damage to a 20’x 20’x10’ room extension off detached GarageProject Location: Portland, OR Date: 01/23/24Desired Completion Date: Timing is flexibleRequest Stage: Ready to HireRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Build - Use existing architectural drawingsRooms Included:: Living/Family roomRooms Included:: BathroomWhat type of guest house/casita addition will this be?: Remodel existing spaceComment: Converting detached garage to bathroom/living areaProject Location: Portland, OR Date: 01/23/24Project Description: Design and buildType of Addition: Ground level additionWhat types of rooms/spaces are you interested in adding to your home?: OtherComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/22/24Type of Addition: Detached additionProject Description: Build - use existing architectural drawingsWhat types of rooms/spaces are you interested in adding to your home?: OtherComment: Would like to turn a garage into an adu. New roof needed as well as one new wall.Project Location: Portland, OR Date: 01/22/24Type of Addition: Convert or finish existing spaceProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: I have a larger exterior building on my property. Was considering converting it into an aduProject Location: Portland, OR Date: 01/21/24Type of Addition: Convert or finish existing spaceProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Portland, OR Date: 01/20/24Type of Addition: Second story additionProject Description: Build - use existing architectural drawingsWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)What types of rooms/spaces are you interested in adding to your home?: OtherComment: Add a second edition and main floor addition of about 1400 sqft. And reconfiguring existing rooms in existing floor plan To add a master suite.Project Location: Portland, OR Date: 01/19/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Would like to build a room off the back of our garage. Would be approx. 16'x22' with a large closet and one window.Project Location: Portland, OR Date: 01/16/24Project Description: Design and buildType of Addition: Ground level additionWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Living/family roomComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.
