How much do addition contractors typically cost?
- Martinez, California Average$98,346
- Typical Range$45,000 - $98,346
- Low End - High End$5,800 - $300,000
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Service Pros
San Jose, CA·
Kitchen Remodels, Major Renovations , ADU , Design service, roof , and 2 more
"I want to thank BE HOME REMODELING and his team for transforming my basement from dark and dingy to a completely new space. Best of all he did it on time and on budget. Josh was very communicative kept me posted on what was happening with the project. I highly recommend"
Rosena S. in December 2024
Concord, CA·
"Yes. The remodeler was on time, worked efficiently, cleaned up after himself, and because Eric was experienced in remodeling, he knew exactly what to do so everything went smoothly. Thank you. The bathroom looks great!"
Keith B. in December 2024
RC
Tracy, CA·
"He did a great job. Great customer service and he used good materials. My mother-in-law loved his job. Perfect pricing."
Masoud M. in October 2021
San Jose, CA·
General Contractor
"Gabriel and his team did a Fantastic job.!!!"
angel F. in November 2024
Pittsburg, CA·
"I would hire this team again and again! They do beautiful work and really listen to how you expect the finished product to look- no surprises. They were always on time, respectful and reliable, and perfectionists in each job. Quotes were fair and work was carried out in a timely manner and they left every space clean each night. We are finding new jobs to start each time they finish one!"
Mary F. in January 2025
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
Walnut Creek, CA·
Second story additions, no job to big for our in house design and engineering team, Kitchen and Bathroom. Remodel to redesign, give us a call we do it all!, Room additions and remodels, dust free and family friendly, no need to move , and 7 more
"My family and I had a wonderful experience working with Cerlletti and Kennedy Design Build. The contractors along-side their sub-contractors were very friendly, knowledgeable and super proffessional. We were able to achieve the satisfaction of being able to have the kitchen of our dreams. For a fraction of the costs. Thanks to Matt, Robert and their staff! We would proudly recommend their services to our neighbors, friends and anyone else who asks: where did you get that awesome kichen? Photos to follow..."
Golston B. in March 2013
In business since 2019
Vacaville, CA·
About us: "We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business."
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
Showing 1-9 of 16 results
Costs for related projects in Martinez, CA
- Build an Addition$45,000 - $98,346
- Perform Home Renovations and Repairs$4,050 - $24,075
- Remodel or Renovate a House$42,059 - $170,666
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 Martinez, CA
HomeAdvisor Community Rating
Overall Rating:
Martinez Addition & Remodeling Contractors are rated 4.8 out of 5 based on 193 reviews of 193 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 Martinez, CA
Project Location: Martinez, CA Date: 01/23/24Type 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?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.
