...S&P Global Ratings assigned its '##+' long-term rating to the Pennsylvania Housing Finance Agency's (PHFA) series 2021-136 (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 2021-136 bond proceeds will be used to finance the purchase of new mortgage loans and downpayment and closing assistance loans for single-family low- and moderate-income residences, refund previously issued bonds (series 2012-114C), and pay issuance costs. The bonds will bear interest--payable semiannually on Oct. 1 and April 1, starting Oct. 1, 2021--at fixed rates until maturity, subject to redemption as described in the official statements. PHFA established the bond indenture in 1982, and all bonds in the indenture. As of June 30, 2021, it had purchased...