This document provides data on available office space and net absorption in San Mateo County, California between Q4 2012 and Q2 2014. It shows that direct availability is declining faster than sublease availability, with class B and C space moving more slowly. The average asking rent increased from $3.53 to $3.60 per square foot due to steady demand. While San Mateo County is not currently losing major tenants, larger tech firms are focusing their expansion on San Francisco and South Bay areas where new construction is occurring along transportation lines like Caltrain.