How much do addition contractors typically cost?
- Simi valley, California Average$91,550
- Typical Range$65,000 - $91,550
- Low End - High End$25,000 - $240,000
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Service Pros
sherman oaks, CA·
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 couldn’t 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, 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
EL
Moorpark, CA·
Landscaping Design
"They were on time, gave me the best price for the patio. They made some suggestions that made the project even better. I love the job they did."
Ellen P. in December 2019
Winnetka, CA·
Kitchen Remodels, Additions - Residential & Commercial, Garage Conversions and Remodels , and 2 more
"I am using Golan to remodel my entire house!"
karen B. in December 2014
"Hymie did a great job. He was on time and knew what he had to do. His pricing was fair. He was very personable and efficient. I highly recommend him. Ron Simi Valley"
77582983A96258781D96984E6A23F1B1B50EF1FB57D039B88C1E7F3943940F56 5. in August 2026
Camarillo, CA·
Kitchen, bathrooms, Kitchens , and 3 more
"Juan was great! He and his crew showed up on short notice and really did a great job on my yard!"
77A741F7C013D0DF2896B5C18AC1BD296C5872927BEC659B3077674766FC33DF 2. in December 2018
Valley Village, CA·
Complete remodeling from A-Z. Quality service and attention to detail! We specialize in new home construction, kitchen and bathroom remodels, foundation, framing, roofing, room additions, garage conversions,, wood or tile flooring, electrical, plumbing, painting, cement, stamped, driveways, heating, air conditioning and any other general construction project you need.
"This was the 2nd bathroom IRI completed for me. It was done in the midst of electrical work I was having done throughout the house. The job was done in a timely manner. The quality of work and the workers were very professional. I strongly recommend IPI (Gino) For any job you want done right."
DFAFB17323695962CFCF54AE47CC41445C69C318664AFCDC2E00BD8C4CA3274B 3. in November 2025
Studio City, CA·
"I was able to get the kitchen of my dreams, with this wonderful remodeling that they did to me, it turned out just as I wanted it, really thank you very much"
35C4BAEC5608056D82A4CA82EA2BBEF0857046B21E6360E11DA790C813ADBF84 D. in September 2026
R
California City, CA·
"granite countertop in front of sink had 2 foot crack"
37863BDE83E04CBD10B02BFE8C73E5956A58E5C534477843F49C9A2FD9A9A1EB D. in August 2026
Showing 1-9 of 29 results
Costs for related projects in Simi valley, CA
- Build an Addition$65,000 - $91,550
- Demo an Interior$800 - $6,666
- Perform Home Renovations and Repairs$4,333 - $16,300
- Remodel or Renovate a House$30,690 - $98,000
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 Simi valley, CA
HomeAdvisor Community Rating
Overall Rating:
Simi valley Addition & Remodeling Contractors are rated 4.9 out of 5 based on 258 reviews of 258 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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