12 On Shan, located at 12 Shan Road, is a 15-storey building comprising 78 fully furnished apartments, with sizes ranging from 350 to 930 sq ft. Completed in 2018, it has a total GFA of 68,048 sq ft and total net lettable area of 51,652 sq ft. The property, which was originally a residential development, was converted to become a serviced apartment due to prevailing poor market conditions at the time, as well as other external business factors that included certain property market cooling measures, according to TA Corporation. Under the URA 2019 Master Plan, the site is zoned for residential use with a plot ratio of 2.8.