To run a lottery for an affordable home, the Housing Department first collects lottery entry sheets and sorts them into four groups (or buckets) according to how they meet the lottery preferences.
Next, an independent lawyer assigns a number to each lottery entry and draws the numbers from the first bucket until the bucket is empty, then from the second bucket, and so on until all names have been drawn. All numbers are recorded in the order they were drawn. If the first household drawn decides not to purchase the home, it is offered to the second household, and so on.
One person households may apply for a two-bedroom home and still be in the first preference group. If a one or two-person household applies for a home that is three bedrooms, they will not be in the top preference group.