Smart City Development Holdings Limited, an investment holding company, operates as a contractor in the building industry in Hong Kong, the People's Republic of China, and Macau. It operates through four segments: Construction Business, Securities Investment, Property Investment Business, and Money Lending Business. The Construction Business segment undertakes building construction works; electrical and mechanical engineering works; and alteration, addition, renovation, refurbishment, and fitting-out works, as well as provides decoration engineering services. The Securities Investment segment invests in long term and short term marketable securities. The Property Investment segment invests in, acquires, and rents properties. The Money Lending Business segment engages in the money lending activities. The company was formerly known as Deson Construction International Holdings Limited and changed its name to Smart City Development Holdings Limited in September 2020. Smart City Development Holdings Limited was founded in 1988 and is headquartered in Kwun Tong, Hong Kong.