Abstract
This paper clarifies the characteristics of house renewals and environmental changes which have happened in a detached housing area since 1960s at Senri New Town. Changes of detached houses due to rebuilding or extension are investigated through the field survey and analysis of aerial photographs.
As a result, the followings were found; 1) ready built houses (prefabricated houses) are extended or rebuilt earlier than order-made detached houses, 2) a larger site or a corner lot shows high possibility of site subdivision for garages etc., 3) as for the design of street side of a site, houses built in recent two decades shows such the tendency that walls or net-fences close nearer to the boundary with a fewer quick hedge and more garages, and 4) in some streets, quick hedges maintained since new town construction ended by structure of garages.
Characteristics of rebuilt houses and their abutment structure along the street are influenced by the year of construction. Environmental design and building regulation must be reappraised with regards to changes of spatial structure clarified in this study.
