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
Redwood City, CA·
Addtions Remolding
"This company remodeled my kitchen and they were truly professional and completely honest from start to finish. Although there were some unexpected issues they resolved everything very smoothly. They also cleaned after themselves at the end of every working day. The most important they made amazing kitchen, beautiful design and quality. Excellent contractor, thank you Unique Home Design & Remodeling!"
Phil D. in September 2019
San Jose, CA·
Kitchen Remodels, Major Renovations , ADU , Design service, roof , and 2 more
"Ben was efficient and communicative the entire time. Project was done on time and his guys were all helpful. Will stay in touch for future projects w him!"
F1749CC1C67E36373D5A0D918965B111D4CE51C1316BD5487F69DB2198FC69C4 1. in March 2025
FS
PACIFICA, CA·
"Always on time and professional."
Martin B. in November 2023
Sunnyvale, CA·
Garage Remodels, Kitchen Remodels, Bathroom Remodels , and 1 more
"Rose remodeling just finished my garage. I had a very old unfinished two car garage roughly 400 SF Adir did an amazing job from the beginning explaining every Step of the way and helping me with the design and finish material such as the storage cabinet, epoxy colors etc.. Iâ m super happy the communication was flawless and the outcome exceeded my expectations. And now we are working on the master bathroom and more future projects to come!! Thank you adir and thank you rose remodeling! ð ¹"
Daniel C. in June 2023
San Francisco, CA·
Complete Home Renovation, ADU/Room Addition, Pavers/Concrete/Landscape , and 8 more
"We had a major kitchen remodelling project in our house including new cabinets, countertops and flooring. Even sinks were replaced. We expected a lot of headaches, delays and unexpected charges. With Spenser and his team none of that happened. He explained from the beginning what our options were, he gave his recommendations that we found quite reasonable. The job started when he said it would and he was regularly checking on the progress. Everything that we wanted to fix (and it wasn?t much) was done at no cost. They did an excellent job, the kitchen is beautiful!"
Vlad S. in December 2024
AC
Concord, CA·
Plumbing
"I hired this contractor for a major plumbing job, including fixing a slab leak, concrete replacement, and installing new hot and cold water piping. The work was completed promptly and with excellent results. The contractor's professionalism, engineering background, and clear communication were truly impressive. Highly recommended!"
4314209EBFA2FA04DE77A188295F203DD3F17F5B8173E26521889FA201968385 B. in February 2025
AG
In business since 2003
San Leandro, CA·
Brick & Stone, Landscaping, Remodels , and 1 more
About us: "We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job."
UC
San Bruno, CA·
Addition to Existing Structure - Build, Major Renovation - Multiple Rooms, Kitchen - Remodel , and 2 more
"What I really liked about working with Universal was our direct interaction with Fred, and the fact that he was patient with us in making decisions. I never felt rushed and appreciated his customer service."
Nicole M. in February 2016
SG
San Francisco, CA·
Additions and Remodels
"Love their service... They worked tirelessly on our front porch.. thank you so much for your service..."
Mary S. in March 2024
Showing 1-9 of 24 results
Costs for related projects in San Francisco, CA
- Build an Addition$38,300 - $300,000
- Demo an Interior$916 - $3,361
- Hire a Construction Manager$19,750 - $1,025,000
- 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 4.7 out of 5 based on 195 reviews of 195 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 San Francisco, CA
Project Location: San Francisco, CA Date: 02/01/24Type 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?: KitchenWhat 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: San Francisco, CA Date: 01/31/24Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingLocation: Home/ResidenceProject Description: Design and buildProject Location: San Francisco, CA Date: 01/30/24Desired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Design and buildWhat type of second floor addition will this be?: Full additionRooms Included:: Bedroom(s)Rooms Included:: Living/Family roomRooms Included:: BathroomComment: noProject Location: San Francisco, CA Date: 01/25/24Type 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?: Bedroom(s)What types of rooms/spaces are you interested in adding to your home?: OtherComment: Renovating an existing extension at the rear of the house. Replace back exterior staircase going from the 3rd floor to the ground. Renovate 3rd floor sunroom into an outdoor deck. Renovate 2nd floor laundry room. Renovate ground floor bedroom and add full bathroom and kitchenette.Project Location: San Francisco, CA Date: 01/15/24Type of Addition: Convert or finish existing spaceProject 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?: OtherComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Francisco, CA Date: 01/13/24Type of Addition: Ground level additionProject Description: Design and buildWhat 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: want to add estimated 18ft out with 20ft widthProject Location: San Francisco, CA Date: 01/08/24Type of Addition: Second story additionProject Description: Design and buildWhat 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)
