Presidio Bay Ventures

Presidio Bay Ventures is a San Francisco, California-based investment and development firm founded in 2012 by K. Cyrus Sanandaji. The organization is primarily a commercial real estate investment, development, and operations platform with a portfolio of roughly $5.4 billion spanning 5.8 million square feet across 39 assets in the United States. Alongside this core real estate practice, Presidio Bay operates a dedicated venture arm that makes early-stage investments into companies providing products or services to the real estate, government, finance, analytics, security, construction, and workflow-management industries. As a strategic investor, Presidio Bay deploys initial checks of $100,000 to roughly $3 million and leverages its own property portfolio, tenant relationships, and networks to help early-stage companies prototype and refine products in operating buildings. Portfolio companies gain access to a built-in pilot environment, enterprise customer introductions, and downstream capital relationships. Notable portfolio companies include Climate Alpha (AI-powered analytics for climate-adapted real estate — Presidio Bay led the Seed round in September 2022), AlphaGeo (AI geospatial climate-risk analytics), AvantStay (tech-enabled vacation rental operator with 450-plus homes across 60-plus cities), and Biscuit Labs. Key leadership includes Founder and Managing Director K. Cyrus Sanandaji and Principal Kabir Seth. Presidio Bay's dual identity as both a real estate operator and a venture investor creates a structural advantage that pure-play VCs cannot replicate: it can offer proptech, climate analytics, and construction-tech startups direct access to a large, active commercial portfolio as their first reference customer. Sanandaji's background working with the GSA on post-9/11 federal facilities gives the firm additional credibility with government-adjacent real estate technology companies.