Abstract：This paper reviews the studies that have been conducted on property price spatial diversity. Prices gradient is an important index used to measure price spatial differentiation. There are basically three different methodologies of estimation and three different assumptions on the spatial structure of an urban area. The three methods are: 1） the negative exponential model; 2） the hedonic pricing model and 3） the repeat-sales model. And the three assumptions are: 1） the monocentric assumption; 2） polycentric assumption and 3） no priori assumption about the urban spatial structure. The methodologies and the findings of these previous studies are compared and analyzed to clarify the path for further studies.
2009, Vol. 1 
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