香港建築師學會
Heng On Estate () is the first public housing estate in Ma On Shan. It consists of seven residential buildings completed in 1987. It is a mixed estate built on reclaimed land between Ma On Shan Road and Sai Sha Road. Some of the flats were sold to the tenants through Tenants Purchase Scheme Phase 1 in 1998. The Heng On Estate Commercial Centre and Central Garden received a Certificate of Merit at the 1989 Hong Kong Institute of Architects Annual Awards.