This ordinance amends San Francisco's Planning and Building Codes. It mandates that applicants disclose the presence of any Unauthorized Dwelling Unit (UDU) in development applications, requiring the Planning Department to investigate such units. The ordinance also requires the Planning Department to document properties subject to the San Francisco Residential Rent Stabilization and Arbitration Ordinance and inspect properties before recommending approval for the loss of any Residential or Unauthorized Dwelling Units. Furthermore, it expands the Department of Building Inspection's compliance control program to address fraud and misrepresentation of UDUs, imposing penalties up to $250,000 for material misrepresentation in development applications or building permits.