“Disabled Citizen” means an adult having a physical or mental disability that:
(a) Is expected to be of long-continued and indefinite duration;
(b) Substantially impedes the person’s ability to live independently; and
(c) Is such that the person’s ability to live independently could be improved by more suitable housing conditions. An adult who has a chronic mental illness, i.e., if he or she has a severe and persistent mental or emotional disability that seriously limits his or her ability to live independently (e.g., by limiting functional capacities relative to primary aspects of daily living such as personal relations, living arrangements, work, recreation, etc.), and whose disability could be improved by more suitable housing conditions. A person whose sole disability is alcoholism or drug addiction will not be considered to be disabled.