No colocation data center has been built in San Francisco since the early 2000s, when hosting company AboveNet (now defunct) built the city’s now famous data center at 365 Main Street. That building is now owned by Digital Realty Trust, and together with Digital’s other San Francisco facility, at 200 Paul Avenue, it is one of only a handful of commercial data centers in the city.

At least one property, close to 200 Paul, has been marketed for data center development by various real estate agents over the years, but no-one has bitten, and the building at 1828 Egbert Avenue remains a commercial storage facility.

San Francisco is a notoriously difficult city to build in and has some of the country’s highest electricity rates. It’s also difficult for PG&E, the utility that serves the area, to provide the kind of multi-megawatt energy feeders in the city a data center would require. Bay Area’s data center cluster is in Silicon Valley; that’s where virtually all of the region’s server-farm construction has taken place over the last two decades.

…

http://www.datacenterknowledge.com/archives/2017/08/09/exclusive-san-francisco-to-see-its-first-data-center-build-in-more-than-a-decade/