藉由建築物之改變，可以觀察都市發展轉變之過程。在一個都市經過完全開發之後，都市內部就會開始出現建築物重開發。林享博（1993）與俞國華（2010）的研究指出，建築物之重開發並非是因為建築物損壞至無法使用，而另有原因存在。本研究藉由過去之相關文獻觀察各都市建築物重開發之情形，歸納出建築物重開發可能影響因素。 本研究選取臺北市為研究範圍，使用臺北市建築管理處核發之建築物使用執照及拆除執照計算建築物之重開發程度，以里為最小空間單元，運用空間分析方法觀察臺北市建築物重開發之空間分佈模式，並運用迴歸分析方法觀察各種因素對於臺北市建築物重開發之影響。經實證研究發現，臺北市之建築重開發會受到地區之戶口數變動率、所得水準、平均屋齡、捷運站、政府主導土地開發等因素影響；戶口數變動率與政府主導之土地開發分別代表了市場力量以及政府力量，則為影響建築物重開發最主要的兩個因素。曾經發生過區段徵收或市地重劃等政府主導土地開發計畫之地區，將形成建築物重開發之高-高空間聚集，而捷運規劃這類重大交通建設則會加速此情形之發生。 / Urban development can be exemplified by means of replacement of old buildings by new ones. Once sites in a city are fully developed, the old buildings will need to be demolished for vacant sites to be supplied. It is not just the physical obsolescence that leads to teardowns of buildings, a number of other factors are also at play. In this study, we select the occupancy permits and demolition permits of buildings issued by Taipei city government to calculate net supply of floor spaces. This net supply serves as a proxy variable of building replacement in regression models. We also employ spatial analysis to measure local spatial clustering of building activities. Our empirical results show that building replacement is affected by changes in households, income level, building ages, access to metro stations and government-led land development projects. Amongst them, changes in households and government-led land development projects are two primary contributing factors. Building activities tend to cluster in areas where government-led land development projects are located, and public transport (metro lines) intensifies this tendency.