R114.com estimated the market value of apartments in the capital at 867.6 trillion won as of end-2017, up 99.8 trillion won (13%) from the close of 2016.
The total for all apartments in the country rose 9.2% to 2,365.6 trillion won.
The Moon Jae-in administration last year intervened to calm the highly speculative real estate market, limiting bank loans and inducing owners of multiple homes to sell their properties.
Despite such actions, prices for apartments in Gangnam ward, in southern Seoul, a posh district of the capital with premium real estate, jumped 13% to a total market value of 139.59 trillion won, the most expensive part of the city, according to data provided by R114.com. The overall price in the entire southern section of Seoul increased 10.3% in 2017.
The pace of increase was biggest for the downtown area of Seoul. Apartments in Jongro ward jumped 48.5% to a total market value of 7.9 trillion won.
Outside of Seoul, the market value in Daegu, some 302 kilometers southeast of Seoul, increased 7% to 123.68 trillion won. For the major port city of Busan, about 453 kilometers southeast of the capital, value rose 5.5% to 173.56 trillion won.
In Gyeonggi Province surrounding Seoul, value climbed 7.6% to 660.92 trillion won.(Yonhap)