Simon Mulla is a visionary leader in the Southern California construction industry, serving as the President and Founder of Cali Builders & Construction Inc. and the driving force behind the specialized ADU brand, Calibuilder. With over a decade of hands-on experience in one of the world’s most demanding real estate markets, Simon has carved out a reputation for transforming the traditional contractor-client relationship into a partnership built on transparency, integrity, and meticulous craftsmanship. His journey is a testament to the power of resilience and the belief that building a home is about much more than just wood and nails; it is about creating a sanctuary that enhances the lives of those within it.

Simon’s path to becoming a premier builder in Los Angeles began with a bold move from Israel to the United States at the age of 21. Arriving with a strong work ethic and an entrepreneurial spirit, he initially honed his skills in sales and various facets of the construction trade. It was during these early years that Simon identified a significant gap in the industry: a lack of clear communication and honesty between contractors and homeowners. He saw too many projects plagued by “budget creep” and broken promises, which inspired him to launch his own firm. His mission was simple yet profound—to provide a construction experience where the homeowner feels heard, respected, and fully informed from the initial sketch to the final walkthrough.

Under Simon’s leadership, Cali Builders & Construction Inc. has evolved from a boutique remodeling firm into a comprehensive construction powerhouse. Recognizing the shifting landscape of Los Angeles housing, Simon was an early advocate for Accessory Dwelling Units (ADUs). He saw the potential for ADUs to solve the city’s housing density issues while providing homeowners with a means to build generational wealth or house loved ones. This foresight led to the creation of Calibuilder, a brand dedicated to navigating the complex 2026 regulatory environment, streamlining the permitting process, and delivering high-end, functional backyard homes. His ability to anticipate market trends and legislative shifts has made him a go-to expert for homeowners looking to maximize their property’s potential.

A cornerstone of Simon’s success is his unwavering commitment to quality control and team building. He understands that a construction company is only as good as its crew, and he has spent years vetting and cultivating a team of master tradespeople who share his “client-first” philosophy. Simon is known for being a hands-on executive, often found on-site ensuring that the structural integrity and aesthetic finishes meet his exacting standards. This dedication to excellence has resulted in a business built primarily on referrals and repeat clients, a rare feat in the competitive Los Angeles market where reputation is everything.

Beyond the technical aspects of building, Simon is deeply invested in the human element of his work. He views every project as a unique story and takes pride in helping families navigate the emotional and financial complexities of a major build. Whether he is managing a luxury ground-up estate or a modern garage conversion, his approach remains the same: total transparency regarding costs, timelines, and expectations. This philosophy of “no surprises” has earned him the trust of a diverse clientele, from first-time homeowners to seasoned real estate investors.

Looking toward the future, Simon Mulla remains dedicated to innovation within the Los Angeles building sector. He continues to explore sustainable building practices and “all-electric” home technologies, ensuring that the structures he builds today are ready for the environmental standards of tomorrow. As Los Angeles continues to grow and evolve, Simon stands at the forefront of the industry, not just as a builder, but as a community partner dedicated to shaping the skyline and the backyards of the city he calls home. Through Calibuilder and Cali Builders & Construction Inc., he continues to prove that with the right vision and a foundation of honesty, any dream—and any home—is possible.