How much do addition contractors typically cost?
- Irvine, California Average$91,356
- Typical Range$44,573 - $150,000
- Low End - High End$8,540 - $200,000

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

ADUs, Additions & Garage Conversions, Bathroom Remodeling, Full-Service Design, Permits & Construction , and 2 more
"thank you Eli and hq remodeling for remodeling our ugly backyard and turf it into a beautiful fun space! It was a good experience working with this company and I will recommend them to my friends and neighbors."
6A139D285C4BD09BD8F08BB9335BA237BBF4C2E696E57D371717321E65003029 C. in August 2026
Siding and decking
"Diego is a fine individual who takes his job seriously. He is punctual, follow the instructions and focus to the task and delivers an outstanding results. I trust him and definitely recommend him for your next Constraction job."
Hassan M. in December 2021

Bathroom Remodels, Kitchen Remodels, Outdoor Remodels
"I recently hired ProHome Remodels for landscape design services, and I couldn’t be happier with the results. The team delivered outstanding work that exceeded my expectations. From start to finish, they were professional, creative, and attentive to detail. I highly recommend ProHome Remodels for any landscape design needs, they truly earned their 5-star rating!"
4277D56C298713B54B81F2D0E770CA119F64562A7E0D6137E74B7E8E8E42EE0D 6. in February 2026
Remodeling
"Universal builders did exactly what they promised. Completed the job on time. They were neat and tidy the whole way. Masoud helped us in every aspect of the remodel. He also was there every day to make sure things were going according to plan to plan. I would recommend them to anyone."
9ED8E651ABB94C7D7A3E85447F879CCA7C81623ED6DD6CF04222C5433A4F5C0B C. in November 2025

"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
"We recently had OC Home Builders, Inc. remodel our primary bedroom, primary bathroom, and several other areas of our home, and we couldn’t be happier with the results! They completely reconfigured the space and brought our vision to life by building a beautiful hybrid tub and walk-in shower combination that we had always envisioned. One of our favorite features is the Tadelakt plaster they applied to all of the bathroom walls and ceilings, which gives the space the luxurious, high-end look we were hoping for. We truly enjoyed the entire process of working with OC Home Builders. Their team was professional, attentive, and great to work with from start to finish. We also appreciated that they are a family-owned business and took such pride in their work. We’ve included before-and-after pictures so you can see the incredible transformation! We would highly recommend OC Home Builders, Inc. to any friends or family looking for a quality construction and remodeling company. We would abs"
A7945AAEE57B3A32932726D73E5EE9B0BA833AE44B6077029A7B94EDEB39C742 4. in September 2026

Residential, Commercial, ADU remodeling and build , and 4 more
"The addition completed by Orange Home Builders Company has greatly exceeded our expectations. The expanded area is spacious and filled with natural light, creating a welcoming and airy atmosphere. The modern design and high-quality materials used in the remodel have added a sophisticated touch to our home. The meticulous attention to detail and the seamless integration with the original structure have made this addition both beautiful and practical."
D9B2CC93A99C4CB2C49AED6ADBAA0DBE551E2F702700F55DBD78D6189E4E1974 9. in May 2025

Additions and Remodels, Kitchen Remodeling, Bathroom Remodeling , and 2 more
"I got new vinyl flooring for my kitchen and not only did it give my home the look that I want, but the process was incredibly smooth. Vince was very communicative and straightforward, and as someone who tends to be an stress-case with large projects like this, all of the information was cohesive. Thank you, highly recommend!"
F69F98A76A5D27126D782870A11907DB080603454A99D72429BF98D8F8CEABBB 5. in September 2026
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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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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.
Irvine Addition & Remodeling Contractors are rated 4.8 out of 5 based on 154 reviews of 154 pros.
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