臺北市住宅建築物經濟耐用年數研究

Economic Life of Residential Buildings in Taipei City

俞國華(Kuo-Hua Yu)

指導教授 ： 林子欽

國立臺北大學/公共事務學院/不動產與城鄉環境學系/碩士(2010年)

摘要

都市成長的過程，新開發發生在兩種主要區位：（1）都市外圍的土地與（2）都市內部拆除（demolish）老舊房屋後取得空地，亦稱為再開發（redevelopment）。兩種取得土地之方式代表都市水平或垂直的成長模式，皆影響土地利用與建築興建等方式。現今臺北市為已開發都市，其外圍與內部少有素地存在，後續新開發需仰賴再開發之方式進行，然而我國卻少有研究談及再開發現況與進一步發生原因。由於再開發會經歷建築物拆除之過程，本研究以民國九十年至九十八年臺北市建管處核發之拆除執照（Demolition Permit）資料解釋再開發之情形。實證以建築物物理耐用年數與實際房屋拆除屋齡（經濟耐用年數）之差距，以作為衡量土地再開發壓力之指標。實證結果發現再開發會受到區位、人口變化及地價等因素影響，絕非單純建築物屋齡及衰敗程度而已，研究成果可解釋住宅不動產市場再開發之現況，及對進一步回饋至現行都市再開發及土地相關的政策建議。

關鍵字

土地再開發 ； 建築物拆除 ； 屋齡 ； 經濟耐用年數

並列摘要

New developments often happen in two kinds of areas when a city is growing, some are in the greenfields outside the city, others are inside the city where old buildings are demolished to supply the building site. The process of demolishing old buildings is also called “redevelopment”. Both ways of acquiring development sites respectively represent horizontal- and vertical-type of urban growth that, in consequence, affects land use and sequent building activities. Nowadays very few greenfield exist around Taipei city, and redevelopment of inner-city sites becomes the deminont method of development. But there has little research into the determinants of land redevelopment. In this article, we analyze the demolition permits issued between Year 2001 and 2009. A redevelopment-pressure index is constructed by the difference between its physical life and economic life（age of a building when demolished）. The empirical evidence suggests that redevelopment timing is influenced by not only the physical obsolescence of a building, but also its location, neighborhood, population and land price. Finally we could feed back the current policies like urban redevelopment and land usage.

並列關鍵字

Land Redevelopment ； Building Demolition ； Building Life ； Economic Life

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