The plans to add four stories atop the existing seven-story building at 633 Folsom Street, adjacent to the 200-foot BLU (631 Folsom), have been completely redrawn by Gensler.
And rather than an addition that would “create a seamless design with the existing building and…maintain [the existing building’s] character,” as originally proposed, the new plans call for an all new façade and modernization, “to unify the addition and existing building into one architectural expression.”
The proposed addition would still add 90,000 square feet of office space to the 175,000 square foot building, along with 4,000 square feet of new retail space (for a total of 5,000) and 1,800 square feet of public open space in the form of a terrace along Folsom.
While the Central SoMa site is zoned for development up to 200 feet in height, after the addition, the eleven-story building would only be 160-feet-tall (commercial stories are taller than residential), a height which would allow the project to be completed with relatively minor foundation improvements.
The entire building at 633 Folsom is currently leased to CPMC through 2018, at which point CPMC’s new Cathedral Hill campus should be ready for occupancy. And while construction wouldn’t commence until CPMC moves, if the project is approved in two weeks time, it will result in 90,000 square feet being subtracted from the bank of allowable large office space development in San Francisco which currently totals 444,000 square feet.