Lousy writing…
“ how long the building has been unoccupied for “
.
KTVU report said it was “Building 21.”
“Building 21” is on the east side of the Clark Kerr campus and is listed as “Archives” on the map at this location:
https://www-bsac.eecs.berkeley.edu/events/iab_spring_2005/maps/KerrCampusMap.pdf