How much do addition contractors typically cost?
- Ontario, California Average$45,181
- Typical Range$0 - $75,000
- Low End - High End$13,000 - $100,000
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Service Pros
North Hollywood, CA·
General Construction & Renovation, Bathroom & Kitchen Remodels, Design & Build Contractor , and 4 more
"Kitchen and M. Bath My husband and I were facing our first remodeling project as first time homebuyers. We are so happy that we chose Beverly Builders Group for our kitchen and master bath remodel project. They did an amazing job! Roy and Lauren, were my leaders and designers, they came out to meet with me personally to discuss my needs and the vision that they have for our remodel project was stunning. They both really listened to me and also offered great suggestions and design advice. The team assigned to our kitchen master bath remodel project - from the demolition guys and frames to the tile guy, electrician, plumber, etc...were top-notch and did great work. During the entire process, if we had a question we could always call the office directly at any time. Now we want to remodel our other bathroom and garage. We did not even have to think twice. We will definitely go again with Beverly Builders Group for such a fantastic job the first time that we wanted them to do our next remodeling job too!"
Cristian R. in December 2024
OC
Rancho Cucamonga, CA·
Addition to Existing Structure - Build
"very clean work. finished on time and excelent costumer service !"
Joe / Paola W. in December 2012
Chino, CA·
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
PB
"I hired a large company who hired ProServ as the contractor for the project. My contractor was incredible and efficient. Regretfully the company was not. Carlos, ProServ owner, made an incredibly awkward situation work out. I would give ProServ and especially Carlos rave reviews. The professionalism and honesty of the contractor and his crew is exemplary and quality of his work is exceptional."
Lynda P. in March 2024
AS
Huntington Beach, CA·
"Their building design services offered a distinctive blueprint that maximized every inch of our space efficiently. It's a perfect blend of creativity and functionality, tailored to our lifestyle and needs."
Martin G. in July 2024
Chino Hills, CA·
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
LD
La Verne, CA·
Renovation with Elegance and Value, Pergolas, Kitchen & Bathroom Remodel , and 1 more
"We had several contractors give us estimates and Ani of LGC was the best. She was knowledgeable, professional and not pushy at all. My husband and I felt very comfortable with her and it didnâ t take us long to choose her. She helped with the design, locating materials and also helped us save money. The workers arrived on time, put in a full dayâ s work and did an amazing job for us. What started as a primary bathroom remodel turned into primary bedroom, bathroom and master closet redo, flooring to most of our house and two patio redos. We felt comfortable with the entire process from start to finish. Ani and her crew kept us informed and helped with giving us other options that we didnâ t even think of. In a few weeks they will put in a beam in our family room. Iâ m very excited. The entire crew were very professional, knowledgeable, neat and cleaned up afterwards. We will definitely use them again. We couldnâ t be more happier with the choice we made. It was the RIGHT one."
Carmen D. in April 2023
HP
Monrovia, CA·
NO
Los Angeles, CA·
Drain Clog or Blockage - Clear, Drywall Install and Repair, Interio and Exterior Painting , and 1 more
"excellent craftsmanship and very polite would use again"
Arlyn M. in March 2016
Showing 1-9 of 13 results
Costs for related projects in Ontario, CA
- Build an Addition$0 - $75,000
- Demo an Interior$0 - $22,000
- Perform Home Renovations and Repairs$2,000 - $40,000
- Remodel or Renovate a House$19,689 - $96,000
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 Ontario, CA
HomeAdvisor Community Rating
Overall Rating:
Ontario Addition & Remodeling Contractors are rated 4.4 out of 5 based on 175 reviews of 175 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 Ontario, CA
Project Location: Ontario, CA Date: 02/04/24Type of Addition: Detached additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: New home need another roomProject Location: Ontario, CA Date: 01/19/24Type of Addition: Second story additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: I would like to extend my current home by about 200 square feet. 100 square feet on the first floor and 100 square feet on the second floor. The first floor would be an extension of the living room and the second floor would be an extension of the main bedroom. Depending on the cost, I may also be interested in converting the garage as part of the project, but that is not the primary focus.
