S&P Global Ratings assigned its 'AA+' long-term rating to Massachusetts Housing Finance Agency's (MassHousing, or the agency) single-family housing revenue bonds (SFHRBs), 213 (AMT), and 214 (non-AMT). At the same time, we affirmed various ratings on MassHousing's SFHRBs outstanding. The outlook is stable. The rating reflects our opinion of: Consistent strengthening in the indenture's performance and equity position over the past two years; The very strong asset quality of the single-family loan portfolio, with approximately 74% of the portfolio consisting of mortgage-backed securities (MBS) guaranteed by Fannie Mae, and high-performing whole loans; Strong parity of approximately 117.39%, which, after adjustments for loan losses on the whole loans, is 114.97%; Sufficient program reserves to provide liquidity for delinquent mortgage loans, along