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
Compare Quotes from Addition Contractors
Get Quotes NowAddition Contractors in San francisco, CA
Where do you need Build an Addition pros?
How It Works
- Answer a few questions about your home project.
- Within seconds, get matched with top-rated local pros.
- Compare quotes and choose the best pro for the job.
Service Pros
Sunnyvale, CA·
Garage Remodels, Kitchen Remodels, Bathroom Remodels , and 1 more
"I reached out to Rose Remodeling & Design for a new construction project, and they didn?t disappoint. Their professionalism and attention to detail were consistent from start to finish. I felt well taken care of every step of the way."
97F3BFD3242460EB09F45055A6142A6E0734B1EE40F511CD04CFDE3E57254C87 0. in December 2025
San Jose, CA·
Renovations, Landscaping, Roofing , and 1 more
"Good service, competitive prices, completed the project on time!"
BFF70485135C547322B677792B3900D8B08BCD88960903699A3B0B6E7B6E205A 7. in December 2024
WR
Sunnyvale, CA·
Home Remodeling, Kitchen Remodel, Home Additions , and 2 more
"Under the guidance of Ben at Waves Remodeling, my kitchen underwent a comprehensive transformation, encompassing cabinets, countertops, flooring, backsplash, and lighting. The seamless communication and overall positive remodeling experience turned the entire process into a delight. I wholeheartedly endorse their services."
Evelyn D. in December 2023
Foundation Repair, Residential and Commercial Additions, Roof replacement , and 2 more
"He did an amazing job everything like I imagined he brought it to reality definitely recommend"
A1B76D021CC020AEA443896AF7EFDD0B895D2D6112DD10D7C9FC411DF3603391 5. in July 2026
CC
SAUSALITO, MARIN, CA, CA·
"Great experience. Responsive to all inquires and changes. Julian has been a pleasure to work with. Will certainly use again. Thanks"
F6BCDBBBB4E20839DF9125D2C7D3B40D98661014A7719D150664B69756F9920F 6. in September 2026
San Francisco, CA·
"I am writing to highly recommend CC & Contractors Inc. for any home renovation needs. Isaac and his crew, especially Rodelio, recently completed our bathroom project & did an absolutely incredible job.From the very beginning, the process was seamless. Getting a quote was very fast, & they were able to schedule the work quickly, which was a massive help for our busy calendars. Throughout the entire project, Isaac was super responsive to all of our questions before, during, & after the job.The crew's professionalism was outstanding. The job site was kept extremely clean every day, and they took great care to completely protect the rest of our house from construction dust. Furthermore, Isaac and his crew graciously accommodated our requests for last-minute changes and showed immense patience with us throughout the process.Overall, we are completely thrilled with how everything turned out & incredibly happy w/their work."
9A446198B5E0515DE983B77B687B5217E7B9157EA693432A236F88271F3E4079 B. in June 2026
PR
In business since 2003
Modesto, CA·
About us: "Welcome to Corneliu Hozan! We always provide high quality work that produces an exceptional product. We pride ourselves on the relationships we build with all of our clients, and we cannot wait to hear from you. Call today!"
Sunnyvale, CA·
New Home Construction - Design-Build, Painting (interior, exterior, wood work), Home Remodeling: Kitchen, bathroom, full home remodeling, additions , and 2 more
"Working with Sigura Construction was an absolute pleasure from start to finish. As a real estate company, we often need fast, reliable, and high-quality work to prepare homes for sale and Sigura Construction exceeded every expectation. Their team was professional, responsive, and incredibly efficient. Every repair and improvement we requested was completed within hours, with excellent attention to detail and craftsmanship. The quality of the work was outstanding from the finishing touches to the overall presentation, everything looked perfect. What truly stood out was their amazing customer service. Communication was seamless, and they even went above and beyond by completing a few additional touch-ups at no extra cost. Thanks to their hard work, the home was ready on time, looked fantastic, and sold within just six days on the market! We highly recommend Sigura Construction to any homeowner or real estate professional looking for quality, speed, and reliability. They?re a part"
1CEDD4524EAFF30DA8251FCD9B90DB4F5749C26D747C3C23AEFAC6BE25CD9680 8. in October 2025
San Jose, CA·
Kitchen Remodels, Major Renovations , ADU , Design service, roof , and 2 more
"After they redid our counter tops and island, we had them paint out cabinets and build shelves up to the ceiling. The communication was on point this time and the results speak for themselves. Would definitely recommend them to anyone for any home project."
579B05ED6C49D67A382683F5EBB77926035FDC4FE13C89D2670E2EA034DA6B6C 1. in December 2025
Showing 1-9 of 49 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 4.9 out of 5 based on 295 reviews of 295 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.
Other Top Projects in Your Area
Other Cities in California
If you're looking for Build an Addition Contractors that serve a different city in California, here are some popular suggestions:
Find Build an Addition Pros in San francisco, CA
Find Pros Nearby
Things to Consider Before You Build an Addition:
What best describes this project?
Do you provide these professional services?
Find out how HomeAdvisor can help your business
