It is the largest public housing estate in Kowloon City District and has a total of 12 residential blocks which were completed between 1974 and 1975.

"[3] To this end the estate opened with a three-storey air-conditioned commercial complex, a market, and cooked food stalls.

[5] Oi Man Estate was on the itinerary of Queen Elizabeth II when she visited Hong Kong in 1975.

Leader of the British Conservative Party Margaret Thatcher also visited in 1977 and toured Tak Man House, commenting on the modern living conditions, cleanliness of the block, and the cool air circulating within the Twin Tower block's atrium.

Most of the estate and Chun Man Court are located in the Oi Chun constituency, which is represented by Cho Wui-hung,[8] while the remainder of the estate falls within the Oi Man constituency, which is represented by Mak Sui-ki.