The offer was made by Chinese firm Bridge Capital and Australian iProsperity Group, who plan to turn the property into a residential building and hotel with a view of the Darling Harbour.
"This is not the first time that Chinese buyers have chosen to offer a price that includes numbers that are considered lucky," Vince Kernahan of Colliers International, the real estate company handling the sale, told the BBC.
In this particular case, "the buyer's offer was very close to several other offers. They just chose these numbers for luck and as it turned out their luck was with them".
According to Swiss bank UBS, the housing market in Sydney "has been overheating since the city became a target for Chinese investors several years ago".
瑞银表示，悉尼房市“自几年前成为中国投资者的目标后，已经出现过热”。
The report said housing prices peaked in the second half of 2015 and since then been slightly corrected. But the growing demand from foreign investors has led to the residential market "tripling in value over the last three years."
