Applicant update survey | chicago housing authority, To complete the waitlist update survey, 1) go to www.chawaitlistupdate.org and click on the link. 2) enter your applicant number and the last 4 digits of your ss# or. Cha applicants: 8 days to update info or lose spot on, Chicago — a waiting list with the names of 85,000 people needing housing assistance from the chicago housing authority could soon shrink and make way for new. Building vibrant communities | the chicago housing authority, Chicago housing authority. under the leadership of mayor rahm emanuel, the chicago housing authority helps build vibrant communities within the city through its bold.