Seo Kang-joon has reportedly moved into a luxurious residence in Seoul’s prestigious Samseong-dong. According to a recent video by YouTube channel, the actor shifted from Seongsu-dong to the upscale neighbourhood in 2025 after selling his Trimage apartment. His new residence is part of an exclusive enclave known for its privacy and high-profile residents, including several prominent Korean celebrities. The area has previously been home to stars such as Jun Ji-hyun, Rain and Lee Mi-yeon, while Kim Seung-woo, Kim Nam-joo and Song Hye-kyo are among those associated with the neighbourhood.