本研究計畫目的有三，一在於將都市擁擠引進家戶效用函數，建構一個新古典都市擁擠模型，以推導與分析都市擁擠對房租（房價）、家戶住宅消費、家戶密度、建築容積強度、以及都市規模等之影響;二在於利用房屋交易價格、房屋內部特徵、房屋外部特徵、以及都市擁擠等資料，建構與估計傳統特徵價格模型與空間特徵價格模型，以實證都市擁擠對房價之影響及檢定其空間異質性；三在於實證家戶住宅消費與都市擁擠之替代關係，以瞭解家戶對都市擁擠之調節機制。都市擁擠模型之建構方式將以楊重信（1992）之居住密度模型為基礎，將建築密度或居住密度轉換為都市擁擠外部，並具體考慮擁擠之空間外溢效果，將其引入家戶效用函數。都市擁擠之理論分析過程為先推導出一般均衡條件，然後加以求解，求解不成時則從事比較靜態分析或具體考慮函數形式求解或從事數值模擬。引入都市擁擠之傳統特徵價格模型將採用傳統迴歸分析方法予以估計，引入都市擁擠之空間特徵價格模型則將採用地理加權迴歸方法（GWR）予以估計。至於家戶對都市擁擠調節機制之實證，亦將採用迴歸分析方法估計住宅消費與都市擁擠之邊際替代率。
The purposes of this proposed research are triples. One is to incorporate urban crowding into household utility function, and then build a neoclassic urban model with crowding enable to analyze the effects of the urban crowding on housing rent (or housing price), housing consumption, household density distribution, housing structure distribution and the size of the city. Two is to employ the housing transaction data including housing price, housing internal and external characteristics, and various constructs of urban crowding to estimate both tradition hedonic price model and the spatial hedonic price model so as to empirically test the effects of the urban crowding on housing price and housing consumption. Three is to empirically test the crowding mediation mechanism of urban household. The urban crowding model is constructed by extending the urban residential density model by Yang (1992).Urban crowding is defined as a function of housing stock or population with spillover effects. The general equilibrium conditions will be derived and the analytical solution will be obtained, otherwise, the comparative analysis or numerical analysis techniques are to be employed. Tradition hedonic pricing model is to be estimated by regression technique, while the spatial hedonic model is to be estimated by employing the geographic weighted regression technique. To test the crowding mediation mechanism of urban household, the regression technique is again to be employed to estimate the marginal substitutions of urban crowing and housing consumption.
