This paper aims at clarifying the formation of land and building shape and use on Chumchon Khlong Toei that is composed of 11 chumchons in Bangkok, Thailand. The introduction reviews the concept of chumchons that means communities in Thai instead of slums and shows the aim. The second to fourth chapter analyze the formation of land and building shape or its use and their relationship. The conclusion argues that the land and building shape and use can be classified into nine types and they were formed by the community driven development with land adjustment and its period.
