抄録
Ryokuen-toshi is a satisfactory city that developed by sagamitetudo company. A lot of lands deveroper only provided lands and housing, while sagamitetudo company was different from them. Sagamitetudo company didn't only provide lands and housings, but also helped to establish RCA (Ryokuen-toshi Comunity Association) that maintain living environment of Ryokuen-toshi. In recent year, RCA's efforts appreciated and got a prize. This papper discusses the how to deveroped and maintained Ryokuen-toshi finely, and its changes.
