...October 27, 2021 SAN FRANCISCO (S&P Global Ratings) Oct. 27, 2021--S&P Global Ratings assigned its '##+' long-term rating to the Pennsylvania Housing Finance Agency's (PHFA) approximately $253.6 million series 2021-137 (NON-AMT) social bonds. At the same time, S&P Global Ratings affirmed its '##+' long-term rating and underlying rating (SPUR) and its '##+/A-1' and '##+/A-1+' dual ratings on PHFA's previously issued debt under the single-family mortgage revenue bond resolution (the single-family resolution). The outlook is stable. The 2021-137 bond proceeds will be used to finance the purchase of new mortgage loans and down-payment and closing cost assistance loans for single-family low- and moderate-income residences and pay issuance costs. "The '##+' rating reflects our opinion of PHFA's very strong single-family loan portfolio credit quality, cash flows demonstrating sufficient asset-to-liability parity, mortgage-payment and investment-earnings revenue that is sufficient to pay debt service...