Standard&Poor's Ratings Services assigned its 'AA-' rating to Massachusetts Housing Finance Agency's (Mass Housing) housing revenue bonds, series 2015A, 2015B, and 2015C, and affirmed its 'AA-' long-term rating and underlying rating (SPUR) on all bonds outstanding under the issuer's main multifamily housing revenue bond resolution. The outlook is stable. The 'AA-' ratings reflect the application of our affordable multifamily housing criteria released June 19, 2014, and, more specifically, our view of: The extremely strong level of government support, reflecting ongoing support in the form of low income housing tax credits (LIHTC), Federal Housing Administration (FHA) risk-share mortgage insurance, federal and state rental subsidies, property tax exemptions, and tax-exempt bond financing; Very strong strategy and management and financial policies