401 Castro St — Lease in Mountain View, CA

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

Description

Market Context

This office in Mountain View, CA is listed for lease. It has been on the market for 2 days. Compare it against other office listings for lease 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 space leases 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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