SAN JOSE — Major tech deals are helping to keep the South Bay office vacancy rate from rising, while markets in San Francisco and Oakland are struggling with high levels of empty spaces, new real estate surveys show.

During the July-through-September third quarter of 2025, the office vacancy level in the South Bay was the lowest of the three biggest Bay Area markets, according to reports prepared by commercial real estate firm Colliers.

The firm defines the South Bay as Santa Clara County and Fremont. It defines the Greater Oakland Metro Area as Oakland, Berkeley, Emeryville, Alameda and Richmond. The San Francisco report focused on the major business districts on the eastern side.

In the third quarter, the South Bay had an office vacancy rate of 15.9%, the Colliers report determined. E

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