In 2000 , the CHA began its Plan For Transformation , which called for the demolition of all of its gallery high - rise buildings .
They failed HUD 's viability test and proposed a renovated housing portfolio totaling 25,000 units .
In 2000 , the CHA began its Plan For Transformation , which called for the demolition of all of its gallery high - rise buildings because they failed HUD 's viability test and proposed a renovated housing portfolio totaling 25,000 units .