Square Inc., an electronic payment service provider, signed an expansion option for 81,354 square feet of office space at 1455 Market St. in downtown San Francisco. The company signed for 246,078 square feet at the tower in November. Square will move into the space in several phases throughout the year and will occupy a total of 327,432 square feet by 2014.
The 1 million-square-foot office building was constructed in 1977. It is in the South of Market submarket.
Jennifer Haeg of Custom Spaces represented the tenant, while Zachary Siegal and JD Lumpkin of Cushman & Wakefield represented the landlord, Hudson Pacific Properties Inc.