In recognition of the fact that a significant number of persons within San Francisco lack the ability to obtain shelter, resulting in a threat to the health and safety of those persons, and that such threat constitutes a shelter crisis, the intent of this Chapter 21B is to expedite the procurement of professional and other services relating to Projects Addressing Homelessness. For purposes of this Chapter 21B, “Projects Addressing Homelessness” means projects designed to prevent homelessness through the provision of housing subsidies or other services, and projects designed to provide shelter, housing, food, and/or social services to people experiencing homelessness.