Unlike other retailers in Taiwan, convenience stores are not agglomerated in a single spatial point, but spread densely over urban areas. The effect of convenience stores on house prices is subject to its spatial dispersion. Convenience stores (with similar goods and services) would have geographic retailing edge if its location allows residents to ""happen to pass by"" to satisfy their needs; moreover, spatial dispersion ensures the retailing balance among stores in agglomeration competition. Whether spatial spillover effect exists is worth further exploration.
This study adopted three types of spatial models (spatial lag model, spatial lagged X model and spatial Durbin model) to examine the effect of two accessibility indicators of convenience stores – ""spatial density"" (total number of convenience stores within 100 meters of each residence) and ""spatial dispersion"" (distance among convenience stores within 100 meters of each residence) – on property prices in Taipei Metropolis. It is found that ""spatial density"" was not influential to property values but ""spatial dispersion"" had spatial spillover effect on property prices. That is, if convenience stores agglomerate but keep certain distance among each other, it allows residents to easily pass by stores and shop, and this spatial dispersion advantage of nearby properties would spillover to our residence (or vice versa).
In summary, while spatial agglomeration allows retailing efficiency, ""clustering but still keeping distance"" should allow stores to hold competitive advantages, elevate living convenience and local property values in neighbourhoods.