South Bronx Community Management, owner of more than 45 rental buildings, was known for years as a cash cow for Ramon Velez, the South Bronx power broker who died in 2008. The firm was taken over by Velez's son, Ramon Jr., but was on the verge of financial collapse before HPD engineered its venture with Lemle & Wolff. DiNapoli said HPD gave Quadrant properties an unusually big share of its total loans and better loan conditions than other landlords in the program, including a far lower interest rate of 1%.