140 New Montgomery

140 New Montgomery Street is a 26-floor Art Deco mixed-use office tower located in San Francisco's South of Market district, close to the St. Regis Museum Tower and the San Francisco Museum of Modern Art. Constructed in 1925 as a modern headquarters for The Pacific Telephone & Telegraph Co., it was originally known as The Pacific Telephone & Telegraph Company Building or simply the Telephone Building, and, after 1984, as The Pacific Bell Building or The PacBell Building. When it opened on May 30, 1925, The Pacific Telephone Building was San Francisco's first significant skyscraper development, and was the tallest building in San Francisco, until the Russ Building matched its height in 1927 at the time of its completion. The building was the first high-rise south of Market Street, and along with the Russ Building, remained the city's tallest until it was overtaken by 650 California Street in 1964. It was the first high rise located on the west coast to be occupied solely by a single tenant. AT&T sold the building in 2007. As of 2013, Internet company Yelp was the main tenant. Yelp moved out in 2021 following a rise in remote work during the COVID-19 pandemic.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).