President of BZ Build Co.
John Brennan is the Founder and President of Brennan Construction. With a career spanning over 15 years, John has established himself as a leader in our local construction industry, known for his commitment to quality and excellence.
With his headquarters located in his hometown of Burbank, California, Brennan Construction operates primarily in the San Fernando Valley, San Gabriel Valley, and northern areas of Los Angeles. John offers a comprehensive suite of in-house services that include conceptual design, architectural planning, structural engineering, and construction management. His extensive knowledge and hands-on experience enable him to guide his clients through the entire construction process, ensuring that each project is tailored to meet their unique needs and vision.

Co-Founder of BZ Build Co.
Ashlyn Mangandi is a dedicated professional and the glue that makes everything happen at Zello Group. With a background at Zio Studio Services and Quixote, she excels in elevating every encounter and bringing hospitality into all aspects of the organization. A proud Altadena resident, Ashlyn’s resilience shines through in her work, even after her family’s home and her three daughters’ school were lost in the Eaton Fire. Her unwavering commitment is key to Zello’s success.

A seasoned entertainment executive, has held leadership roles at NBCUniversal, Electus, and Shine International, driving global content success. At NBCUniversal, as EVP of Commercial Development, he oversaw unscripted collaborations with top talent like Dwayne Johnson and Jennifer Lopez, managing over 40 producer and talent deals while expanding the studio’s reach beyond NBC platforms. At Electus, he led the distribution of 4,000+ hours of content to 170+ countries. At Shine International, he was instrumental in launching franchises like MasterChef and The Biggest Loser.

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