Keywords: 
• Urban street /
• evaluation based on Hedonic model /
• multiple linear regression model /
• actual utilization efficiency /
• open space

Abstract: In order to quantitatively evaluate the actual utilization efficiency of urban street open space, the concept of open space utilization value and open space value was introduced. In this concept the index factor assignment score was used to evaluate the actual use value of open space（M）, and a multivariate linear regression model is constructed based on the Hedonic model to calculate the open space value of the sample（α）, so that the actual utilization efficiency of the open space is obtained, that is,η=M/α. In order to judge whether the open space is inefficient, the optimal utilization efficiency of the open space has to be calculated. The government reference and questionnaire survey were used to determine the standard reference sample. The Jurenfang Community were determined as the standard reference sample, based on which the actual utilization efficiency standards of thecommunity were calculated and compared with that of the other sample communities under study to judge the inefficiency of the open space. If the actual utilization efficiency of the open space in a sample is higher than that of the standard sample, the open space in the sample is fully utilized. Conversely, if the actual utilization efficiency of the open space in a sample is lower than that in the standard sample the actual utilization efficiency of the open space in the sample is in a course of inefficient use. The research results showed that the actual utilization efficiency of the open space in the sample Gaodeng Community was greater than that in the standard sample Jurenfang Community, indicating that the open space in the Gaoden community was fully utilized. The actual utilization efficiency of the open space in Aihua Community and Wanfu Community was less than that in the standard sample, suggesting these two communities were had inefficient actual utilization efficiency in the open space.