The extension house is around 140 Sq.m. comprise of 2 master bedroom, 1 living area and 3 bathrooms., while the existing house is  around 260 Sq.m. comprise of 3 bedrooms, 1 bathroom and main living room, main dining room and kitchen. The total area of two buildings  is 400 Sq.m. The owner of this house prefer to keep the existing look rather than changing to the new look as mostly the renovation project done. It comes from the valuable memory of this house which is her home with 5 children grew up all and pass a way husband. The architect design the new part to get along with the existing one but putting transition space to be more little unique and use the style of the existing house to add up special space with round arch. There is still under renovation the existing part so we show the processing of design process until construction new part finished. The owner and her daughter still stay in the house while built the new part and move to the new house while renovate the existing house.