The residence of Khunying Pornpan Tharanumas (Watcharaphai) comprises 3 houses, two in Chinese and one in European style. The Chinese ones were built circa late King Rama III to early King Rama IV period, and the European one built in King Rama V period to replace the former Chinese building on the site.
The house was originally a gambling house called “Rong Bon Saphan Hua”. Mr.Thongkham Tang had a piece of land exchange with gambing house and renovated it as his own residence. The property has been inherited by his heirs until the present owner, who is his great granddaughter.
The houses are laid out in U-shaped surrounding an open court in the front. The middle house is the European style building with arched windows but roofed with Chinese terracotta roof tiles. The Chinese buildings stand on both sides, each has a balcony on the upper floor behind a balustrade, over which is fitted with louver windows. At present, the house is the owner’s residence and an office of the Prathanphon Yaowachon Foundation.