「風水」與住家環境的關係源遠流長，時至今日仍是購屋決策中重要的影響因素。然而購屋者對各種負面風水（一般稱之為外煞）變項的認知程度，以及各種外煞因素對購屋意願之影響，目前似乎仍不甚清楚。本研究以台南市東區某知名連鎖仲介公司之客戶為對象，進行面對面問卷調查，獲得100份有效問卷。研究結果發現風水認知變項可分為「高度涉入之認知」、「設施外煞之認知」與「普遍之認知」三種因素構面，透過此三種構面，可進一步將購屋者分成「重視風水」與「忽視風水」二大群體，而前者相對於後者對多數外煞因素有較強烈之購屋抗性。

"Feng Shui" has been related to residential environment, and it still a key element in housing purchase decision-making. Meanwhile, it is still not clear that cognitive extent of Feng Shui and how Feng Shui influence housing purchase decision-making. This study investigate real and potential housing shoppers who take use of the service of a famous real estate agency in Tainan. 100 questionnaire were collected and analyzed. The result shows that cognitive of Feng Shui were classified to three factors, including "high-involved cognitive", "facilities cognitive", and "normal cognitive". Furthermore, housing shoppers were classified to two groups, including "Feng Shui-involved" and Feng Shui-ignored". Shoppers classified to "Feng Shui-involved" tends to avoided most of negative elements for housing purchase.