546 Howard Street's Parcel F is San Francisco’s last site zoned for “super-tall” development, i.e. higher than 550 feet. Sold for $160 million, the site’s towering structure is being designed by architects Pelli Clarke Pelli and HKS. Their latest designs for a proposed 64-story tower have gone before San Francisco’s Planning Department for another round of feedback.

The latest designs call for 200 condos on the top 27 floors above 16 floors of office space with a 250-room hotel down below both. On the ground level, office and residential lobbies will share space with a passageway and cafe facing Howard Street. On both sides of the structure, Natoma Street would be turned into pedestrian alleys surrounded by retail shops. A fifth floor pedestrian bridge would connect the tower and City Park on the Transbay Transit Center.

Pelli Clarke Pelli/HKS

The planning commission appreciated the “solidity” of the new designs but “recommends that the [tower’s] massing be more gently and iconically-shaped.”

If the tower is eventually built at the current height, the Yerba Buena project will be the fourth tallest tower in San Francisco when completed.

Sources:

Refined Designs and Feedback for the Fourth Tallest Tower in S.F. [Socket Site]

Here's The 60-Story Tower Proposed For The Final 'Super-Tall' Transbay Parcel [SFist]