The purpose of this study is to evaluate and propose the assessment indices for the residential environment in high density areas. As an index for such areas “Noninflammable Area Ratio” has been authorised and used, however, residents of such areas do not necessarily feel this index important for their lives. Based on this problem, we picked up typical residential blocks in several areas and did a questionnaire survey which asks the evaluation for the environment by the residents.
As a result, the followings are clarified; 1) “Effective Open Space Ratio” which combines coverage area ratio and building density has more advantages than any other indices.
