In the background of rapid urban development in China, several detached houses have been built. The style, local surroundings, and other physical characteristics of these houses are constantly changing, which provides ample samples for the study of the visual preference evaluation of Chinese detached houses. With the detached houses in Jiangsu province, China, as the research object, the architectural style, height-width ratio, window-wall ratio, and local surroundings were set as the physical characteristics of detached houses. A photo stimulation experiment was conducted with different types of participants, the findings of which were then collected and analyzed. The study indicates that architectural style, height-width ratio, window-wall ratio, and local surroundings are the main factors that influence people's visual preference evaluation of detached houses; people of different categories produce different visual preference evaluations of detached houses. This study offers a valuable reference for the design of Chinese detached houses.