How much do addition contractors typically cost?
- Sunnyvale, California Average$104,095
- Typical Range$60,000 - $242,000
- Low End - High End$14,000 - $242,000
Kitchen Renovation, Additions, Deck Builds , and 8 more
"With this team, my addition build turned out very well. The quality of their work is very good and we are happy at everything, they created everything that we wanted without hassle and the whole project went smoothly."
4A3121427CABD513AB315D2E7529E7FD81150B8A47C6D3FAF7272ED1F4BDB803 E. in December 2025

Renovations, Landscaping, Roofing , and 1 more
"Good service, competitive prices, completed the project on time!"
BFF70485135C547322B677792B3900D8B08BCD88960903699A3B0B6E7B6E205A 7. in December 2024

Garage Remodels, Kitchen Remodels, Bathroom Remodels , and 1 more
"Rose Remodeling & Design just finished our master bath remodel, and we are thrilled. Adir has such a great eye for design and gave us amazing recommendations on materials. The tile work is flawless, and the space now feels like a spa. His team worked neatly and professionally from start to finish. We couldn’t be happier with the transformation."
51651DE003EE7D32325187D7AF64716B8718E8F6B068F1D6C53B810278FD4FD0 2. in December 2025

Addtions Remolding
"I want to share my experience with Unique Home Design & Remodeling because after a while of hesitating, checking and trying to make a decision of if I should start the remodeling of my kitchen I want to write that my decision was right on. I truly didn't know what to do so I searched online and saw several home improvement companies but the prices were a little high. When I met with Unique Home Design & Remodeling, I was clarified at first how easy it is. I was very happy after my meeting and quote with them and I was wondering if it's possible. At the third meeting, they presented me several designs and the price for each one of them. I went ahead with them and I hired them for my kitchen remodeling project. Honestly after the kitchen was completed, I really don't want to eat out no more lol! I love my new kitchen more than the other spaces of my house."
Dave M. in July 2018
Doors, Carpentry, Plumbing , and 1 more
"Karol is a very reliable and skilled professional. He approaches any sized job with focused approach and positive attitude. I know I can count on him to get the job done."
Javier R. in May 2022

Remodel, New Construction, Addition , and 4 more
"Due to my toilet flooding my bathroom flooded and I was not in the market for getting a bathroom remodel done due to budget constraints. However when MJ gave me a price for the restorative work he mentioned he would be able to offer a good price for the bathroom remodel. His price for the bathroom remodel was in my budget and after the work was done I was very pleased to have chosen that route. It was marvelous working with Mr MJ!"
Debra I. in December 2024

Major Renovations, Remodels, Additions , and 4 more
"I had stucco work done on an addition and had my house painted. All work was done flawlessly and in a timely manner. The workers were professional and courteous. I would highly recommend this company and would use them again in the future."
Tom P. in December 2023

Full Service Plumbing Company, Full Service Electric Company, Full Service Surveillance Needs , and 2 more
"Sanjeev and his team were incredible to work with. From start to finish they walked me through the entire process and kept me updated at all times. The project was finished on time and the work done was impeccable. Will definilty be using them again for future projects"
Iravin C. in May 2021

"Our goal was to build a structurally safe garage storage loft. Juan and Julian were a great team to work with. They were very professional and organized- they gave us a quote and clearly communicated what the plan would look like from beginning to end. They guided us on the items that we needed to buy prior to starting the work in order to complete the project within the estimated time. They suggested modifications that were minor fixes but made the layout make more sense in terms of placement. Their crew finished a day ahead of schedule. They kept a clean work site and the quality of the results were great. I would gladly work with them on another home project in the future!"
EBABC7A0D13C4DE5CA11356AAF0B818C12DC9BBF30D09A9E51A909FD2310CA9C D. in April 2025
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Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
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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:
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.
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.
Sunnyvale Addition & Remodeling Contractors are rated 4.9 out of 5 based on 498 reviews of 498 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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