【明報專訊】IT has been revealed that there are unauthorised building works (UBW) in four legislators' dwellings. The four are Cheung Hok-ming, Chan Kam-lam, Wong Yung-kan and Leung Yiu-chung. The former three live in New Territories exempt houses (NTEHs), while Leung lives in a top-storey unit with a rooftop in Yau Ma Tei. He is said to have an unauthorised canopy on the roof.