從使用者角度探討短期供不特定人士使用之住房共享的財產權與外部效果問題：類Airbnb網路平臺帶來的住宅空間使用衝擊Space Users’ Concern on Property Rights and Externalities while Hosting Short-Term Guests: the Impact from Airbnb-like Platforms on Existing Residents

本研究提出住房共享的實體空間與權利義務複雜度，會使得住房分享的規範與管理機制，在釐清財產權與避免負向外部效果上，增添困難度。透過問卷分析的結果顯示：住房共享是一股勢不可擋的趨勢，而其規範與管理，應符合不同特性，來避免相關使用者之間的潛在疑慮，主要策略規範應從：一、住房共享財貨的本質特性，二、可能的負向環境外溢，三、有效防止短期不特定住客耗竭性使用共用資源，以及四、建置有效的即時監控與反應機制等方面著手。在危害生命財產與居住品質的因素均能有效控制下，方能充分享受空間彈性與使用上的自由度與方便性。
關鍵詞：共享經濟、共用財貨規範、區分所有建物、共用資源的悲劇

Smart technology creates an innovative operating platform, readily improving the sharing economy. Nonetheless, home-sharing becomes complicated when it comes to the issue of shared ownership. This study presented the complexity of rights and responsibilities of the shared accommodation. The complexity that comes with residential form, the use of buildings, and the shared space makes it increasingly difficult manage home-sharing. Analyzing surveys taken by users, this paper suggests that the home-sharing concept is unstoppable in many aspects. Therefore, the regulation and management of the sharing goods are critical to the success of home-sharing. It should be based on various attributes to avoid possible misunderstandings among three groups: landlords, live-in travelers, and neighborhood residents. The essential management should be based on the following: 1: the characteristics of the sharing home; 2: the possible environmental spillover effects; 3: the possible sources of the tragedy of the commons; 4: the necessary monitoring and reflecting system. Once the threats to and the aspects of living quality are all under control, the flexibility of space and general convenience can finally be appreciated.
Key words: sharing economy, regulation of common goods, condominium building, the tragedy of the commons