Objective : This study was to investigate the effect of reducing safety risk factors in the elderly through home modification on the level of functional disability. Methods : Among the subjects of the study, 127 elderly people aged 65 years or older who lived in Seo-gu, Gwangju Metropolitan City and received community care services, who had the conditions to receive home modification services, were selected as subjects. The study period was from January 2020 to August 2021, and the evaluation tool used the Korean version of the fall risk residential environment assessment (HOME FAST) and the residential environment problem checklist to identify safety risk factors in the home, and the subject's function The World Health Organization Disability Assessment List (WHODAS 2.0) was used to determine the level of disability. According to the evaluation result, home modification intervention was applied according to the subject's desire, and the effectiveness was examined through re-evaluation. Results : As a result of analyzing the effect on the level of functional disability of the subjects, it was confirmed that the fall risk environment factors had a relatively higher impact than the general characteristics. showed a statistically significant difference (p<.001). The level of functional disability improved in all areas (p<.001), and among them, Life activities, Mobility and Participation showed the greatest change in order. Conclusion : Through the modification of the home environment to meet the subject's needs, falls and residential environment problems were statistically significantly reduced, and it was confirmed that the change in the level of functional disability was also statistically significantly improved. In the future, by continuing the home modification service in the community care project, not only the elderly but also all people with disabilities, such as the disabled and children living in the community, participate in activities on their own to live a self-directed life. Efforts are needed to nurture experts, collaborate, and expand service support.