How much do addition contractors typically cost?
- Washington, Washington DC Average$81,330
- Typical Range$40,875 - $117,753
- Low End - High End$15,000 - $216,000
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Service Pros
Rockville, MD·
"Our kitchen remodel with Top Remodeling was a breeze! Ben's attention to detail made all the difference. We couldn't be happier with our beautiful new kitchen."
Randy A. in October 2023
Alexandria, VA·
Residential Remodel, Commerical Remodel
"Mr. Koran was a wonderful professional and he knew his work. He explained everything and did a wonderful job"
19B710D8713CBF393CDCEACEB19D2FB6C60771CF08B7490022852FB30A5BA93B 3. in May 2025
Remodeling
"Job was done very professional work and I?m happy how everything turned out."
in February 2025
RA
Washington, DC·
interior decorator services under project only, design build company, staff has over 30 years of experience , and 1 more
"R&A Contractors Group, Inc., is a great company to work with. They are on time, efficient, and upfront with pricing."
Daren D. in November 2022
WG
In business since 2012
About us: "Established in 2012, We proudly offers premium construction services to residential, commercial, and governmental clients across DC, VA, MD, NC, and FL. We're in pursuit of setting the benchmark for excellence in construction, underpinned by our unwavering commitment to cutting-edge technology and valued human resources. The industry's challenge of securing reliable and top-tier construction managers and contractors is real, given the increasing demand and the notable dearth of such professionals. This often results in projects missing their mark on timeliness, budget, and scope. We have harnessed technology and our human capital to bridge this gap and deliver superior results."
DL
"Could not be happier with Jim's work. Remodeled master bath, kitchen, replaced front door, plus several other smaller tasks. Easy to work with. Has a talented eye for style and design. Kept me informed throughout the process. Has experience with the design board in my town (Reston). Never up-charged. I've recommended him to several neighbors already."
Brian B. in August 2024
Columbia, MD·
Additions, Remodeling, Renovations and Decks, Pre-Construction Planning, Permit Acquisition , and 7 more
"I hired German to renovate our basement (utility room, laundry room, storage...), including a complete overhaul of plumbing and wiring. I was extremely pleased with the quality of work, the organization of various activities, the price asked and the follow-up. By employing skilled and efficient workers licensed for plumbing (water and gas), electrical and carpentry/drywall the coordination of the various trades was limited to the strict minimum. I would not hesitate to recommend German for similar renovation/extension projects."
Alain L. in October 2023
AL
About us: "At Alltecs, we are a leading minority-owned construction firm dedicated to delivering exceptional residential and commercial construction services throughout the DC area. With a strong commitment to professionalism, integrity, quality, and service, we have established ourselves as a trusted name in the industry. Our company was founded with a vision to provide top-notch construction solutions that exceed our clients' expectations. We understand that every project is unique, and our team of skilled professionals brings a wealth of expertise and experience to every endeavor. From concept to completion, we strive for excellence and ensure that each project is executed with meticulous attention to detail."
Showing 1-8 of 8 results
Costs for related projects in Washington, DC
- Build an Addition$40,875 - $117,753
- Demo an Interior$330 - $5,000
- Hire a Construction Manager$29,650 - $413,000
- Perform Home Renovations and Repairs$6,000 - $25,699
- Remodel or Renovate a House$19,438 - $79,854
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 Washington, DC
HomeAdvisor Community Rating
Overall Rating:
Washington Addition & Remodeling Contractors are rated 4.9 out of 5 based on 54 reviews of 54 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 Washington, DC
Project Location: Washington, DC Date: 02/04/24Type of Addition: Ground level additionProject Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Washington, DC Date: 02/03/24Project Description: Design and buildType of Addition: Convert or finish existing spaceWhat 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: Washington, DC Date: 02/03/24Type of Addition: Ground level additionProject Description: Build - use existing architectural drawingsWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Comment: Install half bath first level currently a clisetProject Location: Washington, DC Date: 01/26/24Type 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: Washington, DC Date: 01/26/24Desired Completion Date: More than 2 monthsRequest Stage: Planning & BudgetingProject Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Washington, DC Date: 01/25/24Type 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?: Bedroom(s)Comment: Frame a wall to convert a living room on 1st floor into a bedroom and also converting a half bath room on the 1st floor into a full bath with showerProject Location: Washington, DC Date: 01/24/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Comment: Need to add a bathroom in a bedroom.Project Location: Washington, DC Date: 01/24/24Type of Addition: Second story additionProject Description: Build - use existing architectural drawingsWhat 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: Washington, DC Date: 01/19/24Project Description: Design and buildType of Addition: Convert or finish existing spaceWhat 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: Washington, DC Date: 01/17/24Type of Addition: Detached additionProject Description: Build - use existing architectural drawingsWhat 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 roomComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: Washington, DC Date: 01/16/24Type of Addition: Second story additionWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Project Description: Design and buildComment: I would like to get an estimate for build a bedrooms in a second floor.Project Location: Washington, DC Date: 01/14/24Type of Addition: Ground level additionProject Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.
