Short answer：A district price fall is not necessarily faster physical depreciation. Market conditions, transaction mix, land, condition and supply affect prices; accounting depreciation is a separate concept.
Control comparisons
Match age, area, use and transaction dates and distinguish averages from indices. A changed sales mix can move averages without an equal change for every property.
Inspect actual condition
Review management and repair records and budget physical issues separately. District price changes do not calculate a flat’s repair cost, and renovation does not guarantee recovery of a price gap.
Before deciding
- Separate prices from deterioration
- Keep samples and limitations
- Obtain condition and repair evidence
Sources and method
Sources support the specific rules described. Checklists and hypothetical calculations are editorial explanations, not measured market results or individual approvals.
Revision：Removed unsupported experience, case outcomes and statistics; corrected the topic-specific rules and limitations described above.
Scope：General information only, not personalised legal, tax, immigration, admissions or investment advice.