Rainbow Housing Assistance Corporation | 952 followers on LinkedIn. Lifting lives through the delivery of a service-enriched housing model. | Rainbow Housing Assistance Corporation (Rainbow) is a nonprofit organization that provides service-enriched housing programs for residents of rental housing communities throughout the country. Rainbow provides a custom supportive services solution to every asset served, building a sense of community. Offering services that focus on community and promote the self-sufficiency of the residents has been proven to increase the financial viability of multifamily assets.