隨著網路的崛起，傳統實體通路的存在價值與市場地位也飽受威脅，在市場上的實際演變，書店、銀行、證券、旅遊、機票等中介者的角色，明顯的已可被電子商務網站所取代，因此在國外已經有很多針對網路對實體通路產生「去中介化」之研究，在國內雖然也有類似的現象產生，但迄今還沒有類似的研究，所以本研究有開啟此議題研究先河之意義。 與其他遭到「去中介化」產業或服務比較，不動產仲介業更倚賴「人」之中介角色，但其銷售之產品又具有高度不易「去中介化」的特性：異質性、高總價、少交易經驗等，所以其面臨「去中介化」之威脅，的關鍵因素是什麼，其受到「去中介化」衝擊之程度到底多大，都是本研究想要探討之課題。 根據問卷調查，本研究發現交易成本是不動產仲介業面臨「去中介化」的關鍵原因，不過在目前之環境下，不動產仲介業還是不可能完全被不動產自售網站所取代，而不動產自售網站如果想要發揮自售之功效，還需多強化網頁內容呈現、提升網站知名度以及增加配套服務。 / Following the emerging of internet, traditional retail channels of books, banks, stocks, tourism and ticketing have faced the challenges from many internet-based businesses (electronic commerce) which eliminating intermediary between buyers and sellers make products or services to sell cheaper and faster. And there are many researches on such kind of disintermediation effects in foreign society. But till now there is not any kind of disintermediation study in Taiwan. This study is a beginning research of disintermediation in Taiwan. Though the real estate brokerage industry, which relying more on middleman (broker) than others, has the high-priced and idiosyncratic product features, it also faces the direct challenges from for-sale-by-owner (FSBO) websites. So the study tries to find out what is the key factor that caused the disintermediation and how far it goes in the real estate brokerage industry. The major findings of the study are that transaction cost is the real factor that caused the disintermediation, the functions and status of real estate brokers are still not easily to take place by FSBO websites and the later has to intensify content layouts, increase website’s reputation and offer extra services to attract more users to FSBOs.