About

Siavash (Sia) earned his B.S. in Civil Engineering from Oklahoma State University, followed by a Master’s in Geotechnical Engineering. With over 30 years of experience in the real estate industry as a civil engineer and developer, Sia’s journey began when he founded his first company specializing in design, engineering, and architecture in the Greater Bay Area. In 2020, he sold this company to his brother-in-law, shifting his focus to personal development projects.

Sia then established a family-owned real estate development company that excels in acquiring, entitling, and constructing residential mid-rises, primarily in San Francisco. His company also invests in and manages commercial properties, including industrial, office, and retail spaces across the Bay Area.

Throughout his career, Sia’s success has been grounded in an unwavering work ethic and the lessons learned from his early ventures. For him, development goes beyond profitability—it’s about community impact. His rental portfolio now includes 751 residential units, with 115 designated as affordable housing units under the Below Market Rate (BMR) program.

Reflecting this commitment, in 2019, Sia proposed a transformative project at 1830 Alemany Boulevard, dedicating 50% of the units to BMR housing. After navigating San Francisco’s complex entitlement process and overcoming challenges posed by the COVID-19 pandemic, he completed the project in 2022. The development features 116 residential units, 58 of which are BMR, marking the first time a developer voluntarily restricted half of a project’s units as affordable housing, entirely self-funded. Additionally, Sia allocated five standard units to a local foster youth program, offering housing and support to transition-age foster youth (18-25) through a nationally recognized education and employment initiative.  View 1830 Alemany Opening Video

Expanding his community-focused endeavors, Sia recently co-founded Leon Event Hall in San Francisco’s Excelsior district. This versatile venue supports non-profits and artists, fostering a space where art and philanthropy intersect. Learn more at Leon Event Hall.

Sufi earned a B.A. in Communication from the University of San Francisco and a J.D. from Santa Clara University School of Law, setting the foundation for her multifaceted career as the Co-Founder of Tahbazof Law Firm, specializing in comprehensive legal services to a diverse clientele within the real estate and home building industries and Atlas Property Group, a privately funded real estate company focused on building and developing high-quality properties that contribute to thriving communities. Through these roles, Sufi plays an integral part in shaping and executing strategic investments, overseeing development projects, and ensuring operational excellence across all facets of the business.

As part of Tahbazof Law Firm, she manages a wide range of legal responsibilities, including litigation, unlawful detainers, purchase and sale contracts, lease negotiations, collections, condominium applications and accounts receivable, while also overseeing the entitlement process for new developments. Her ability to navigate the complex legal landscape while balancing risk and opportunity has been key to the success of the companies she serves.

Beyond her professional accomplishments, Sufi’s approach is deeply rooted in community values and social impact. Inspired by her mother, Sami, she has consistently integrated compassion into her work, understanding that real estate and law are not just about structures and statutes—they’re about people and communities. During her youth, her volunteer work with her mother at Shelter Network in San Mateo, supporting families experiencing homelessness, and her mentorship with A Home Away from Homelessness in San Francisco have given her a grounded perspective that informs both her business and legal decisions.

Sufi’s dedication to social causes extends to her board membership with Ambassador for Lucile Packard Children’s Hospital, advocating for pediatric healthcare advancements and supporting the well-being of children and families. She also served on the John Burton Advocates for Youth, where she helped shape initiatives to support foster youth and homeless young adults.

Sami was raised in Iran and upon moving to San Francisco in 1981, she received her B.A. in Graphic Design from Academy of Arts. She currently serves on the board of Farhang Foundation, a non-profit organization established to celebrate and promote Iranian art and culture for the benefit of the community-at-large. Some of the areas of focus include poetry, literature, music, fine arts, history, philosophy and traditions.

Philanthropic giving has always been at the core of everything Sami does. She feels most fulfilled when helping under-privileged children. Teaching these values to her 2 children, Sami made it a priority to be involved with her community. She was a past member on the Scholarship Committee for the Latinos Unidos, served meals to homeless through Project Homeless Connect in San Francisco, and volunteered weekly with her kids at Shelter Network in Redwood City and San Mateo. For over 8 years, Sami mentored students at A Home Away from Homelessness while also serving as a member of its board, and later as its President. Sami also served on the board for John Burton Advocates for Youth.

Samaneh recently cofounded Leon Event Hall, a newly established philanthropic venue in the city’s Excelsior district, to provide a space where art can flourish, communities unit, and positive change takes root. This new venue stands as a testament to the Tahbazof family’s deep-rooted philanthropy in the Bay Area by providing a space where non-profit organizations can host their events and artists can exhibit their work. Read more at https://www.leoneventhall.com.

Yosef holds a B.S. in Accounting from Santa Clara University and a J.D. from the University of California Hastings College of Law, blending business acumen with legal expertise. Yosef is the founder and partner of several businesses in San Francisco, including Atlas Property Group and Tahbazof Law Firm, bringing a unique combination of legal and financial insight to both ventures.. With over a decade of experience in the real estate sector, his background in law has given him a distinct lens through which he operates his companies. He has deep ties to the Bay Area as the son of Iranian immigrants who settled in the region and has made serving his community a pillar of his commercial work.

As a co-founder and partner at Tahbazof Law Firm, Yosef and his team provide comprehensive legal services to a diverse clientele within the real estate and home building industries. Their areas of expertise encompass a wide range of real estate-related matters, including purchase and sale transactions, loan documentation, property tax concerns, condominium conversions, land subdivisions, land use planning and permitting, as well as landlord-tenant disputes.

As a key member and founder of Atlas Property Group, Yosef plays a pivotal role in guiding the company’s diverse business initiatives, ranging from complex construction developments to an array of special projects. Atlas Property Group is a versatile professional real estate corporation primarily focused on the commercial and residential real estate market in the Bay Area. The firm specializes in identifying promising investment opportunities, strategically repositioning assets, and building a thriving property management portfolio. Its success can be attributed, in large part, to its unique approach, which not only takes into account the real estate itself but also places a significant emphasis on the welfare of people, tenants, and the communities it invests in. This comprehensive perspective sets Atlas Property Group apart, serving as a source of pride while also providing a distinct competitive advantage. Through Yosef’s direction, the company has experienced rapid expansion, including the construction of hundreds of new residences in recent years and extraordinary growth in its property management portfolio.

Beyond his professional contributions, Yosef is deeply committed to community service. For over a decade, he served as a member and chair of the San Francisco Assessment Appeals Board, offering his time, expertise, and experience to support fair property assessments and uphold community standards. Yosef’s unique combination of financial insight, legal proficiency, entrepreneurial spirit, and a strong sense of civic duty continues to drive SST’s success while positively impacting the broader San Francisco community.

Baha received his BA in Economics from the University of California at Berkeley, and a Master’s in Public Policy from the John F. Kennedy School of Government at Harvard. He has over two decades of experience in politics, strategic communications and government relations advising Fortune 500 companies, candidates and community groups on political engagement. He has spent the past 15 years focused on commercial property investment and management, having built SST’s commercial portfolio in the San Francisco Bay Area which includes a diverse mix of office, industrial and retail assets. Baha is also active in non-profit and philanthropical causes, including the Iranian Scholarship Foundation (ISF) that awards academic scholarships to students in need and Jewish Vocational Services (JVS) which helps job-seekers build in demand skills to find good jobs to better their lives.