CHA also faced criticism for leaving a large number of units vacant ( 16 % ) and for slowing its pace of adding units .
The CHA actually holds an annual lottery for candidates to seek a spot on the waitlist .
CHA also faced criticism for leaving a large number of units vacant ( 16 % ) and for slowing CHA 's pace of adding units .
The CHA actually holds an annual lottery for candidates to seek a spot on the waitlist .