Following acquaintance was obtained by field and questionnaire survey. (1) Most of the residents in a "hillside area" perceive the characteristic of atmospheric phenomena. (2) Concerned with energy consumotion for air-conditioning, consumption of "hillside area" is less than the neighboring city statistically. (3) In a "hillside area", resident's attitude of strength of wind has an impact on energy consumption for air-conditioning. (4) Energy consumption for air-conditioning can be reduced by ventilation. However, the condition of ventilation is strongly influenced by house configuration and it's surroundings, so it is important not only urban design but also architectural design.
