How much do addition contractors typically cost?
- Walnut, California Average$88,292
- Typical Range$0 - $215,000
- Low End - High End$14,000 - $215,000
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Service Pros
sherman oaks, CAยท
Additions and Remodels
"We hired Ben to remodel our living room and kitchen, which included adding approximately 300 square feet, creating an open floor plan, and removing an enormous brick fireplace in the center of our house. From day one, Ben was amazing to work with. He was on budget, on schedule, professional throughout the entire project, and consistently anticipated potential issues before they became problems. His wealth of experience was incredibly valuable when it came to making decisions along the way, and he was always willing to offer thoughtful advice and guidance. His entire team was fantastic as well: professional, respectful, and clearly committed to doing quality work. We couldnโt be happier with the results and our experience working with Ben. We highly recommend Ben for any remodeling, building, or construction project!"
4962401849CF53F36FD7DFBFDB9CEF6837B81E394192E3F3ADBEB35C88D18EC4 D. in September 2026
Redwood City, CAยท
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
Chino, CAยท
Water and fire damage restorations, Additions and Remodels.
"He built my house and is now in the process of building my second house. I highly recommend him."
Leonard B. in November 2017
Studio City, CAยท
"Very clean and punctual, totally professional, very fast and orderly. They did a bathroom remodeling project for me, and it turned out fantastic. very nice guy and easy to deal with. You'll be very glad seeing him coming to your home."
7D92B20CF6E753AE1B8B0068F6797EBC57516B03060F98D645C6ED593780EAFF 1. in October 2026
GRANADA HILLS, CAยท
Additions, ADUs, New Construction , and 1 more
"They are very professional I recommended๐๐๐๐๐๐"
52646B7EA8CCB53C8B137578E3241A8DF1225F93233979F0E0FF36C52BF21D61 4. in August 2026
Pomona, CAยท
construction, remodeling, concrete
"Absolutely great work"
5597FFC0D90EB19A301C96382E0D1F5573CB3985DEED095714BCDBA790EACEC4 F. in September 2026
KR
Woodland Hills, CAยท
"After having remodeled our kitchen several years ago, we had KN remodel our master bathroom. Great guidance, from the construction stuff we don't understand to the aesthetic discussions we much appreciate. Done on time, and with great clarity around the billing. And the crew was great -- neat, thoughtful, on time, helpful. A big thumbs up."
560FAC41F76A7FB1622A147FB6A7B5EFCDA8F2EA8E6C60D9A076B3539E936224 D. in September 2026
Chino Hills, CAยท
ADU, Additions, ADU , and 1 more
"The owner takes pride in his work and is involved and a great communicator."
Martin X. in March 2018
Riverside, CAยท
Landscape Design, Pools, Bathroom Remodel , and 1 more
"They did an amazing job, on time, finished the project on a timely manner, and his crew are very professional."
Jose M. in May 2021
Showing 1-9 of 24 results
Costs for related projects in Walnut, CA
- Build an Addition$0 - $215,000
- Perform Home Renovations and Repairs$0 - $70,000
- Remodel or Renovate a House$41,000 - $88,374
Frequently asked questions
- Itโs important that you verify their license is still in good standing. Also keep in mind that certain states or provinces donโt require licensing if the job is under a certain dollar amount.
- You can find a list of your stateโs 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 proโs 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. Hereโs a look at task-specific advice.
You can use HomeAdvisor to help evaluate a contractorโs qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a proโs HomeAdvisor profile, and sometimes, his or her website.
Your research doesnโt stop here. Once youโve 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?
- Whatโs 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 workerโs 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 Walnut, CA
HomeAdvisor Community Rating
Overall Rating:
Walnut Addition & Remodeling Contractors are rated 4.9 out of 5 based on 165 reviews of 165 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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