S&P Global Ratings assigned its 'AA+' rating to Massachusetts Housing Finance Agency's (MassHousing) $150 million series 226 single-family housing revenue bonds (SFHRB). At the same time, S&P Global Ratings affirmed its ratings on existing debt within MassHousing's SFHRB program. The outlook is stable. Bonds issued within the SFHRB program are special obligations of MassHousing, secured solely by a pledge of certain revenue and funds established under this program for their security and payment. These bonds are on parity with all other obligations under this program. According to preliminary transaction documents, MassHousing plans to use bond proceeds from series 226 to finance new mortgage loans under the SFHRB program through the purchase of whole mortgage loans for low- and moderate-income first-time