The ground has officially been broken for the 43-story office tower to rise on Transbay Block 5, fronting Howard Street between Beale and Main.

As designed by Goettsch Partners with Solomon Cordwell Buenz, the “Park Tower at Transbay” will yield 740,000 square feet of office space; 10,000 square feet of high-end retail space; 17,000 square feet of outdoor space; and 14 skydecks with 1,000 square feet of private outdoor space apiece.

A basement garage will provide parking for 128 cars.

The tower should be ready for occupancy by spring 2018. And once again, the centrally-located parcel was originally zoned and envisioned for the development of a residential tower as part of the Transbay redevelopment plan.