Not very many. The San Jose Metro area vacancy rate is the lowest in the nation, and San Francisco is not far behind. And this is because in our tight, expensive housing market, a landlord can rent any property at all to a good, reliable tenant for a lot of money.
Landlords are not letting housing sit vacant in our area, because if they do, they’re leaving $$$$ on the table. They’re either renting out the housing, or using it for AirBnB.