This study reveals residents’ willingness to live in their current homes and communities and analyzes the factors related to their willingness to age in place in South Korea. Using a questionnaire survey method, data of 289 residents aged 55 or older were collected in apartment areas with the potential to become naturally occurring senior communities in Seoul. Data were analyzed using descriptive statistics, correlation tests, t-test, ANOVA, factor analysis, and regression analysis by SPSS 26.0, and the findings were followed up. Housing services are very important in aging communities. Physical environment-oriented residential services promote a safe walking environment, facilities to support the elderly, a secure complex environment, a home-safety accident-prevention diagnosis service, home improvement, and home improvement support. Multiple regression analysis showed that residential services or elderly education and activity support services influence aging in place, which is a novel finding revealed in this study.