At Home Co., Ltd. (Headquarters: Ota-ku, Tokyo; President and CEO: Yasufumi Tsurumori; hereinafter "At Home") announces the survey results titled "Analyzing Floor Plans with AI! Regional Characteristics of Newly Built Detached Houses." This survey incorporates, in addition to conventional property data analysis, the results of AI-based analysis of approximately 4,000 floor plan diagrams using At Home Lab Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Yoshitaka Otake; hereinafter "At Home Lab")'s patented floor plan feature extraction AI model. The findings summarize trends in floor plans of newly built detached homes across Tokyo's 23 wards, Hokkaido, and Fukuoka Prefecture, taking into account each region's climate and lifestyle habits. [Expert Commentary] Junko Imae, Executive Officer and Head of Data Marketing Department, At Home Lab Co., Ltd. Regional Housing Patterns Revealed by AI Floor Plan Analysis Floor plans reflect regional lifestyles. In this report, we used At Home Lab's floor plan feature extraction AI model to visualize the characteristics of newly built detached homes. In Tokyo's 23 wards, constrained by rising land prices and limited plot sizes, three-story homes with living rooms located on the second or third floor are predominant. In contrast, in cold-climate Hokkaido, floor plans are designed with heating efficiency in mind—such as avoiding windows in wet areas and omitting balconies. In Fukuoka Prefecture, many homes are single-story or include traditional Japanese rooms, taking advantage of larger land plots—highlighting the diverse housing characteristics across Japan's north-south span. Three-story homes dominate in Tokyo's 23 wards; single-story homes are on the rise in Hokkaido and Fukuoka Prefecture. Looking at the distribution of homes by number of stories across the three regions, three-story homes account for 54.0% in Tokyo's 23 wards, making them the most common. While land plots in Tokyo's 23 wards are smaller compare