Originally Posted by pseudolus
I recall being told a long time ago that the air rights for the northeast corner of Mission and Fremont were sold to enable construction of 45 Fremont.
Are you referring to the 600' 50 Fremont or the 476' 45 Fremont? That could be possible, but 50 Fremont was constructed in 1983 (which means it was approved in 1981) and 45 Fremont was completed in 1978. The Downtown Plan, which created the elaborate system of height limits, FAR limits, and the TDR scheme, was adopted in 1984.