Brex and Cognition Trade 41,000 SQFT of Starter Space for 380,000 SQFT in SOMA, Testing San Francisco’s Startup Pipeline

As fast-growing AI and tech companies jump from 16,000- and 25,000-square-foot suites into full SOMA buildings, CBRE's Q3 2026 San Francisco office report shows nearly half of the city's 8.4 million square feet of tenant demand is expansion-driven, raising the question of whether a younger tier of startups will fill the space the graduates leave behind.