How much do addition contractors typically cost?
- San Francisco, California Average$98,346
- Typical Range$38,300 - $300,000
- Low End - High End$5,800 - $300,000
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Service Pros
In business since 2018
About us: "Adam Franch is a California licensed architect and has been working in architecture, development, and project management since 2003. He has a proven ability to execute projects while balancing design, client goals, construction, schedule, and budget. Adam is inspired by nature and in pursuit of a better built environment."
S
In business since 2021
About us: "Family has been in construction my whole life. I have been doing this for over 25 hours. We want to help up with all your additions, framing, and concrete needs. We love what we do. Reach out for all your needs!"
Campbell, CA·
Home Additions, New Home Construction, General Contractor , and 2 more
"I was amazed by their professionalism, responsiveness, and ability to transform my kitchen exactly how I dreamed. I would highly recommend them. I had an amazing experience with this business."
Kelly W. in February 2023
Orinda, CA·
Residential architectural design, Commercial architectural design, Bay 9 Architects is a full service architectural design firm that has built a reputation for design excellence in commercial and residential design over the last 20 years. Although we have designed a
"He is a very pleasant person, easy to work with, very professional."
Lisa H. in March 2022
GW
In business since 1988
San Anselmo, CA·
Residential Design, Restaurant Design
About us: "We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumerÂ’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job."
San Francisco, CA·
Architect
"hired Mark Brand Architecture to design an extensive remodel for my house in San Francisco. Mark and his staff gave me a lot of help during the remodel, especially when it came to working around or through problems that the old structure of the house posed including working with the project engineers. When I had to temporarily stop the remodel due to health issues, Mark and his team stepped in to make sure the job was kept on schedule. I feel they went above and beyond the call of duty with this project."
Mark K. in June 2019
Richmond, CA·
Residential or Commercial - I have broad knowledge in both., Exterior Envelope Design, Interior Design, Casework Design, Existing Remodel or New Construction - and anything in between. , and 2 more
"It was a great experience working with Michael. We are extremely happy with his work. Michael is very kind and easy to work with. He gets the work done very fast. Pays careful attention to every minor details. Very professional and knows his work very well. I will surely refer him to my family and friends."
Jincy J. in May 2020
SB
San Mateo, CA·
Strong Knowledge of Materials, Structure and Energy Efficiency, Conceptual and Planning, Permit Expediting and Contractor Selection , and 7 more
"Very knowledgeable, thorough, a pleasant person to deal with and punctual. While the plans are in the process of being worked on, all indications are that Mr. Sofia is a very exacting individual in terms of his work product and ethics."
stephen L. in January 2008
Walnut Creek, CA·
Designer, Draftsperson, Architecture
"Still in process but the service and quality of work has been excellent so far"
Gordon D. in December 2005
Showing 1-9 of 48 results
Costs for related projects in San Francisco, CA
- Build an Addition$38,300 - $300,000
- Demo an Interior$916 - $3,361
- Install Steel Beams$200 - $200
- Perform Home Renovations and Repairs$7,700 - $65,625
- Remodel or Renovate a House$49,923 - $148,055
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 San Francisco, CA
HomeAdvisor Community Rating
Overall Rating:
San Francisco Addition & Remodeling Contractors are rated 4.8 out of 5 based on 536 reviews of 536 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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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)
Do you provide these professional services?
Find out how HomeAdvisor can help your business
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Recent Job Requests for Addition & Remodeling Contractors in San Francisco, CA
NewProject Location: San Francisco, CA Date: 05/25/23Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingProject Description: Design and buildComment: There is a plot of land for sale in San Francisco that I'm thinking about purchasing and building a house on it. The address is 881 Moultrie St in San Francisco. I don't have a lot of details on itNewProject Location: San Francisco, CA Date: 05/25/23Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingType of Addition: Ground level additionRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Design and buildRooms Included:: Bedroom(s)Rooms Included:: BathroomComment: 2 story home in Sunset. Want to convert unfinished garage space that makes up most of the first floor to add a bathroom and a bedroom/office space.NewProject Location: San Francisco, CA Date: 05/20/23Phone System Problem: 1 - Very UnsatisfiedReason for Cable: 2Desired Completion Date: Timing is flexibleRequest Stage: Ready to HireType of Addition: Ground level additionRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Build - Use existing architectural drawingsRooms Included:: KitchenRooms Included:: Bedroom(s)Rooms Included:: BathroomComment: No street, no noise, unheard of tranquility, unmatched serenity, only disturbed by the chirping blue jays! Flexible future floor plan functions up to 4Bedrms or designate as multiple office/workspaces, with 3 baths & incredible outdoor living from terraces, roof decks & charming gardensProject Location: San Francisco, CA Date: 05/19/23Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingType of Addition: Ground level additionRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Build - Use existing architectural drawingsRooms Included:: KitchenRooms Included:: Bedroom(s)Rooms Included:: Living/Family roomRooms Included:: BathroomComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Francisco, CA Date: 05/13/23Project Description: Design and buildProject Location: San Francisco, CA Date: 05/11/23Request Stage: Ready to HireDesired Completion Date: Timing is flexibleProject Description: Design and buildComment: i would like to get estimates for Build an Addition please contact me as soon as possible to give you details about the projectProject Location: San Francisco, CA Date: 05/07/23Desired Completion Date: Timing is flexibleRequest Stage: Ready to HireProject Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Francisco, CA Date: 05/01/23Desired Completion Date: Timing is flexibleRequest Stage: Ready to HireProject Description: Design and buildComment: Extend room 3ftProject Location: San Francisco, CA Date: 04/27/23Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingProject Description: Design and build
