BP 220 establishes guidelines for economic and socialized housing developments in the Philippines. It defines economic housing as projects for average income families and socialized housing as projects undertaken by the government for underprivileged citizens. BP 220 sets standards for subdivision design, building types, lot sizes, road widths, and other development requirements to ensure affordable, livable housing is provided. It differentiates economic and socialized housing and establishes price ceilings for each type.