This study used the NOC of 905 buildings in Seoul to examine the characteristics of Seoul office areas. The deposits, rents, management fees, efficiency rates, vacancy rates, and gross floor area of the first quarter in 2019 were employed to calculate...
This study used the NOC of 905 buildings in Seoul to examine the characteristics of Seoul office areas. The deposits, rents, management fees, efficiency rates, vacancy rates, and gross floor area of the first quarter in 2019 were employed to calculate the NOC of each office buildings. The distance to the nearest subway station was measured using the address of each building. The study aimed to prove that the closer an office building is to a subway station, the higher its NOC would be and tried to understand the features of office areas. 905 office buildings were chosen as the subject of the study. However, since Seoul office areas are categorized into CBD, GBD, YBD, and Others, sufficient samples were secured only in CBD and GBD. YBD was excluded because its buildings are concentrated around Yeouido station. Thus, the study focused on 588 buildings in CBD(219 buildings) and GBD(369 buildings). It discovered that CBD and GBD have different traits depending on their urban planning and confirmed it through statistical research and hypothesis verification. It is meaningful both practically and academically for identifying the characteristics of office areas that even the real estate business did not recognize. Although the NOC is the most critical factor in actual office lease cases, previous research failed to use it as a vast investigation was required. The study assumed that the NOC reflected the features of the current office rental market, and based on previous papers, chose [the distance from subway stations] as the most influential factor that can be objectively expressed among the different factors through which the NOC converges.
In terms of the method, this paper first identified the NOC of CBD and GBD through descriptive statistical analysis, and then analyzed the differences between CBD and GBD and their causes through an independent sample t-test. It afterward confirmed the differences between CBD and GBD by conducting a correlation analysis on the NOC, distance from subway stations, and other variables. A one-way ANOVA was additionally carried out to compare the traits of subway stations.
Office buildings were concentrated(at least six buildings) in City Hall Station(No. 9, No. 10, No. 7), Gwanghwamun Station(No, 1, No. 5, No. 2, No. 6), and Euljiro 1(il)ga Station (No. 1-1, No. 5) in CBD. Excellent office buildings located 50m away from subway stations on average had a gross floor area of 44,111㎡, the NOC of ₩198,179,000(leaseable area 3.3㎡), an efficiency rate of 61.56%, and a location near major streets.
Office buildings were concentrated(at least ten buildings) in Seolleung Station(No. 10, No. 1, No. 5, No. 4), Gangnam Station(No. 12, No. 5, No. 4), Samsung Station(No. 4, No. 5, No. 3), and Yeoksam Station(No. 1, No. 3) in GBD. Excellent office buildings located 50m away from subway stations on average had a gross floor area of 27,456㎡, the NOC of ₩191,202,000(leasable area 3.3㎡), an efficiency rate of 56.05%, and a location near major streets. In addition to the above results, this paper considered the NOC, which was not frequently used before, as the principal factor and analyzed the values of offices based on the subway, a public transportation. The results would be useful in the real estate business on leases and sales of office buildings.