599 Castro — Sale in Mountain View, CA

  • Price: Contact for price
  • Listing type: For sale
  • Asset type: Office
  • Location: Mountain View, CA 94041

Description

Now available for sublease, office 599 Castro located at 599 Castro St Mountain View, California 94041. Available square footage 14,260 - 31,571 SF.

Market Context

This office in Mountain View, CA is listed for sale. It has been on the market for 140 days. Compare it against other office listings for sale in Mountain View, CA — view the full market.

As of Q1 2026, the Silicon Valley office market showed a 2.9% vacancy rate, average asking rents near $20.16/SF/yr, rents up 4.3% year over year, and cap rates around 6.2%. Source: multiple brokerage reports, Q1 2026.

Rising rents point to a competitive market where well-priced, well-located assets trade quickly.

Office market FAQ

What is the typical cap rate for office in Silicon Valley?
About 6.2% as of Q1 2026, per multiple brokerage reports.
Is the Silicon Valley office market tightening or softening?
Vacancy is around 2.9%, with asking rents rising year over year (Q1 2026).

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