建築物排放溫室氣體的來源為主要為能源的使用，例如用電、使用煤油或天然氣發熱與烹飪，所排放之二氧化碳比率約為所有能源使用的三分之一，因此推動節能建築或評估方式更具有綜合性的綠建築，為減緩全球暖化的方法。綠建築的效益可以分為經濟、社會、環境三個層面，以經濟效益來看，獲利為房地產投資者優先考慮的因素。然而綠建築在房地產市場中的擴張，取決於市場的成熟度，而市場成熟度的提升與三個層面都有相關。為了解哪些具體因素會影響綠建築的投資，本研究從房地產投資的方向去看綠建築，而不是單純從綠建築本身的經濟效益來看，將觀察的角度帶入較宏觀的源頭，並從文獻回顧中探討影響房地產投資的因素，歸納出24個因子，即影響建商或民眾投資與購買房地產意願的因子，以問卷調查的方式，比較這24個因子對綠建築投資成效的影響。其中以「地點」得分最高，其次為相同得分之「開發政策」、「工程品質與數量」。經由比較平均數法得到的結果，年紀較輕的受訪者對許多影響因子的給分明顯較低，可以解釋為台灣的房地產並非成熟市場，不是由年輕人來主導發展方向，他們也認知綠建築並非目前的主流。另外將房地產投資影響因子分為四大類群組，並進行迴歸分析，得到群組中的項目之間有因果關係且呈正比，表示提升其中一些項目，就能提升整個分群的效果，這些群組包含「環境與硬體」、「資訊管理」與「人力資源」，在政策上可以選擇群組中影響較大、或較為容易執行的項目來改善，並提升整個產業的基本價值，以利房地產市場的成熟，進而促進綠建築的擴張。;Energy consumptions are the major sources of greenhouse gas emissions of buildings. Around a third of the energy consumptions contribute to carbon dioxide emission. Thus, promoting energy-saving buildings or green buildings with comprehensive evaluation methods is a solution to mitigate global warming. The benefits of green buildings involve economic, social and environmental aspects. From the economic benefit aspect, profiting is real estate investors’ first consideration. The expansion of green buildings in a real estate market depends on market maturity, and the increase of market maturity is related to the three aforementioned aspects. In order to understand what factors affect the investment of green buildings, this research analyzes green buildings from the perspective of real estate investment instead of the perspective of economic benefits of green buildings. This research summarizes from literatures 24 factors that affect developers and the public’s decisions on investing or buying real properties. Then questionnaire survey is conducted to analyze the effects of these factors on the green building investment outcomes. The survey result shows “location” is the most significant factor, which is followed by “development policy” and “construction quality and quantity” of the same significance. According to the results of comparing means, younger interviewees give lower scores for many factors. This fact explains that the real estate market in Taiwan is not a mature market; its development direction is not determined by the youth; and the youth do not see green buildings as mainstream in the real estate market. In addition, the 24 factors are classified into four major groups, and three of them, i.e., “environment and hardware,” “information management,” and “human resources” are found positively correlated through regression analysis. This result benefits government policy-making by allowing it to select the groups with higher influences or easier implementing items for improvement. The fundamental values of the construction industry can thus be increased, the real estate market can mature, and the expansions of green buildings can be facilitated.
