More than 3,500 properties have been listed on the national real estate website Zillow, with a total value of $2.6 billion, according to a Reuters analysis of data from the agency.
The value of these properties has more than doubled since the start of the year, reaching $2,726 million.
Some of the properties, like the beach condominium in the Bay Area, were bought for the city’s first luxury hotel, the Marriott Bay Area Resort and Spa.
The other 10 properties were acquired to be used for rental properties.
Zillow says these properties are worth between $200,000 and $1 million a month depending on where they are located, and the majority of properties are on prime land in San Francisco and the Bay area.
The company said the number of properties available is increasing.
Zilliow says it does not provide a comparison of median or median market prices between the same properties.
A spokesperson for the San Francisco Chronicle said the company is only looking at property values for properties in the most desirable parts of the city.