Actor Song Kang has joined Seoul’s elite property club after purchasing a high-end apartment in the trendy Seongsu-dong area, an investment that is drawing attention for both its timing and its star-studded neighborhood. According to the real estate industry and Supreme Court registry records on Wednesday, Song bought a single unit measuring 227 square meters at Seoul Forest Hillstate in Seongsu-dong, Seongdong District, for 6.7 billion won ($5.1 million). He completed the purchase in late June and finalized ownership registration last month. Registry documents show the maximum secured loan amount at about 4.6 billion won. Given that mortgages in Korea are typically set at 110 to 120 percent of the actual loan amount, Song is believed to have borrowed up to 4.2 billion won — roughly 60 percent of the property’s price. The purchase has also drawn attention because it was reportedly finalized on the same day the government announced its June 27 real estate measures, allowing Song to avoid tighter lending regulations that followed. Seoul Forest Hillstate, along with Trimage and Galler