Hoi An was an important trading port on the sea rout connecting Asian, Islamic and European countries, and there still remains historical district. Recently, Hoi An has been facing racing rapid growth of tourism, which influences on the townscape. This research shows the relations between regulations of municipal government and needs of house owners as follows; 1)House owners started to install many signboards, to put goods on the sidewalks and building facades and also to paint their houses in not traditional colors to attract tourist interest. 2)Municipal government has responded with a sequence of new regulations to control these changes of the townscape. 3)Functional aspects of the regulations are accepted by the house owners to some extent, because it is rather easy to understand many of these aspects are for maintaining tourist industry too. However aesthetic aspects have not yet had full consensus.
