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Welcome to Calstate Construction Group, Inc.

We’re a licensed general contractor, fully insured & bonded in California. We provide premium quality renovation and additional services to homeowners across all parts of LA, Orange County and the surrounded area.

Calstate Construction Group has made it its mission to exceed the expectation of homeowners in the greater Los Angeles area. Being expert home remodeling, additions, and ADU’s contractor, we help our clients make the best decision across all stages of their home project, from planning, designing, permits, material recommendation, and purchase to construction and fixture.

Our team is fitted with diverse, experienced professionals – from project managers to designers. We take our time to select the people that work with us. Not just for their proficiency on the job but their work ethics and commitment to ensure we exceed our client’s expectations.


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Projects completed
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Global customers
Years of experience
Team engineers

Services we

World class infrastructure solutions to customers and stakeholders across a broad range of construction industry sectors.

Kitchen Remodeling

Bathroom Remodeling

ADU/ garage conversion

room addition/ new construction

roofing Services

landscape/ hardscape




Shimon Amsalem is the founder and owner of Calstate Construction Group Inc., with a career spanning over 18 years in the construction industry, Shimon has become a respected leader known for delivering exceptional work and unparalleled customer service.

Growing up with a builder father, Shimon developed a love for the industry at a young age. After serving 3 years in the military, he decided to pursue a career in construction and began as a framer. Throughout the years, he has honed his skills and expertise in all aspects of the construction process – from project management to design and engineering. His deep understanding of the industry, paired with his passion for excellence, has led to the success of Calstate Construction Group.

Founded by Shimon, the company has quickly become a leading name in California’s construction scene. His hands-on approach, commitment to understanding clients’ unique needs and his incorporation of the latest technologies and best practices have all contributed to the company’s reputation for excellence.

As a husband and a father, Shimon brings a strong sense of responsibility and dedication to his work. He values building long-term relationships with clients and takes pride in the many projects that come from repeat business or client referrals.

When it comes to construction, trust the expertise of Shimon Amsalem and the team at Calstate Construction Group. With his unique background and experience, Shimon has the ability to take on any project with confidence.

What defines us


Bringing your vision to life is our number one priority. We want to assist our clients in making the best decisions for their home remodeling projects and ensure that their renovation process is smooth, fast, and professional.


We're committed to the success of your project. This is shown in our communication with you and the way we handle your project. Calstate Construction Group always puts in its best to ensure client's satisfaction.


We treat you and your project the way we want to be treated. Because we believe that for us to complete a project that our clients will be proud of, we need to be in their shoes. As such;
•We pay adequate attention for details.
•We recommend only the best solutions for your unique needs.
•We assign your project to a project manager and crew that will bring the most value to your home renovation or addition.

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