Shaky Gangnam home prices: a wave of tax-deadline listings through next year (Kim Geon-woo, Bunjeon Academy)
An independent exercise, not a statement by the video creator or verification of every claim in the video.
Does selling rental homes reduce only rental supply?
Assume a hypothetical neighborhood with 100 homes and 100 households, with no construction, demolition, migration or household formation. Initially, 60 homes are owner-occupied and 40 are rentals occupied by 40 tenant households. If 10 existing tenant households buy 10 rental homes for their own occupation, total homes remain 100: 70 owner-occupied and 30 rented, with 30 tenant households. Rental stock falls 25%, but tenant households also fall 25%, so those figures alone cannot establish greater excess demand or higher rents. Results differ if buyers migrate from another area or homes are demolished, so trace household origins and the use of vacated homes. Distinguish more sale listings, tenure conversion and new construction, comparing net rental supply and demand in the same area and period.
Check for yourself
- Are rental-home buyers existing tenants or households arriving from elsewhere?
- Have you included displaced tenants and the homes vacated by buyers?
Limits of application
This is hypothetical stock accounting, not an estimate of an actual market. Quality, size, vacancies, income, financing costs, search time and migration are held fixed. Even with unchanged totals, mismatches across preferred locations and types can create local rent pressures. It does not calculate rent changes or final policy effects.
- What to look for
- Consider both the argument that expensive-home weakness can spread and the counterargument that substitution demand may support other locations. Identify assumptions connecting tax deadlines, listings, subscriptions, relocation and rents.
- Why it matters
- Distinguish listing stocks from sales flows, cumulative return gaps from currency price gaps, and declining rental supply from declining rental demand. Separate policy scope and implementation status before checking transaction financing and maturities.
Timeline
9 segmentsThe later argument is that rental homes sold for owner occupation could increase sale listings and reduce rental supply, allowing weaker sale prices and higher rents to coexist. Selling an existing home differs from building a new one, but renters who buy may also leave rental demand, so a smaller rental stock alone does not establish higher rents. Compare redevelopment moves, new completions, migration, vacancies and rental demand; lease cycles do not guarantee prices in a particular year.