In order to test this hypothesis, the effect of distance is estimated in a unit price equation which constrains the relationship between price and lot area to be proportional and a total price equation which does not impose this constraining assumption. The impact of the nonlinear pricing can be observed by comparing the effect of distance in each model. In estimating each of the price functions, a two-stage procedure is used. This procedure provides a test for sample selection bias and it also produces consistent estimates. Unlike many of the other studies of value gradients, this study uses micro-transaction data from vacant land. The data consist of residen-tial, commercial, and industrial parcels sold within Cook County, Illinois. The next section revisits the prototypical urban land pricing model and compares it with a model that is less restrictive with regard to the area elasticity of price. Next, the econometric methodology is discussed, fol-lowed by a description of the data set. In the fifth section, regression models are described and regression results are analyzed. The sixth and final section draws out some of the conclusions that can be made as a
result of the analysis.
đang được dịch, vui lòng đợi..
