The Philadelphia Housing Authority is stepping in after a mortgage scam by the Puretz family devastated the Brith Sholom House complex in the city’s Wynnefield neighborhood. The PHA is purchasing the 360-unit senior housing complex at 3939 Conshohocken Avenue for $24 million, PhillyVoice reported. The sale needed approval from a judge, which it received last week. It’s a rare direct acquisition of a multifamily property by a city housing agency.