[BTinSF]

I believe the following Business Times article makes it reasonable to start a thread for this as a "proposal":

Developers dust off plans to build SoMa office tower
San Francisco Business Times - January 5, 2007
by J.K. Dineen and Ryan Tate
A stealth contender among the next crop of downtown San Francisco office buildings, 524 Howard St. seemed to have fallen off the map.

But perhaps not for long, according to developer Higgins Development Partners, which owns the parcel along with financial partner Pritzker Realty.

A 23-story building designed by HellerManus, 524 Howard St. was approved in 2000 and put on ice after the tech boom soured. On a mid-block site between First and Second streets, the project will include 202,000 square feet of office space. Swinerton is the contractor.

With rents rising rapidly in the south financial district, it's time to dust off the plans, said Nader Shah, senior VP of Higgins Development Partners.

"We believe the market has come back and we'll be taking a hard look at it in the first half of 2007," he said.

Higgins, based in Chicago, developed the 820,000-square-foot Yahoo headquarters in Sunnyvale and the Hyatt Center, a 47-story tower in Chicago.

The building at 524 Howard St. would be its first project in San Francisco.

Source: http://www.bizjournals.com/sanfranci...ml?t=printable

Here are renderings from the architect's (Heller-Manus) site: