Helzel Boardroom (F299) Haas School of Business by Adeeba Khairzad | Aug 18, 2016 | Loading Map.... Helzel Boardroom (F299) Haas School of Business2220 Piedmont Avenue - BerkeleyEvents 37.87177510000001 -122.2536986 Address 2220 Piedmont Avenue Berkeley CA 94720-1930 United States Upcoming Events No events in this location