The General Assembly finds and declares that: an increasing number of adults in the State are unable, because of disability, to reside in the community without a supportive housing arrangement; many of these adults are therefore homeless, unnecessarily institutionalized, or residing in substandard housing; and current State-operated programs do not adequately address this problem. It is the policy of the State to encourage the development of affordable housing for adults who are unable to avail themselves of existing housing because of disability.