Bahman Ghassemzadeh is a Hillsborough-based engineering and construction professional and the founder of BG Design Build. His experience includes structural engineering, architectural design coordination, residential development, and construction management in the San Francisco Bay Area.
His work has covered custom homes, home additions, major renovations, ADUs, and multifamily residential projects. He brings experience with both the technical development of a project and the coordination needed to move it into construction.
Professional experience
BG Design Build · Founder and Principal · 2024–present
Bahman leads a residential design and construction practice serving the Peninsula and San Francisco. His responsibilities include project feasibility, scope development, budgets, permit coordination, subcontractor selection, field execution, and construction administration.
Independent consulting and residential development · March 2020–present
His independent work includes engineering and residential development, with involvement in acquisition planning, entitlement, design, and construction coordination. Project types include single-family homes, ADUs, multifamily renovations, and new construction.
SIA Consulting Corporation · Partner · January 2011–March 2020
At SIA, Bahman worked on architectural and structural projects ranging from residential remodels to multifamily and mixed-use buildings. His responsibilities included feasibility studies, coordination of design teams, and collaboration with developers, contractors, and public agencies. His experience also included presentations to the San Francisco Planning Commission and Board of Appeals and coordination through planning and building plan review.
Nishkian Menninger Consulting Engineers · Structural Staff Engineer · August 2007–January 2011
Bahman worked on steel, concrete, and timber structural systems for commercial and residential projects. This early engineering experience established a technical foundation for his later design, development, and construction work.
Education and professional qualifications
- Bachelor of Science in Architectural Engineering, California Polytechnic State University, San Luis Obispo.
- Minor in Construction Management.
- California Civil Engineer license C-75941, first issued January 11, 2010.
- California general building contractor license 982312, first issued March 26, 2013.
- LEED Accredited Professional.
Current focus
Through BG Design Build, Bahman focuses on the connection between residential design, structural requirements, construction planning, and site execution. His project experience includes work in Redwood City, Hillsborough, and San Francisco, with a broader practice across the Peninsula.
View selected projects · Contact Bahman · About BG Design Build
Read more on Bahman’s Medium profile.
He is based in the Bay Area with his family.