The Executive median is +67% versus the all-flat-type median for Serangoon and +4% versus the national Executive median. All three figures use the same complete source period, so the comparison is consistent but does not describe a single year.
Use medians with their transaction counts and middle-50% ranges. Compare the same town, flat type and period before drawing a conclusion. A national figure is context, not a substitute for block, floor, lease, condition or transaction-date evidence. These aggregates describe registered resales and do not estimate today’s value.
Keep the town, flat type, period and sample size beside any figure you reuse. A difference between two medians may reflect the mix and timing of registered transactions, so open the town evidence and compare consistent periods before treating it as a market change.
Questions this page can answer
Price evidenceWhat did comparable HDB flats resell for?Use the median, middle 50%, period and transaction count together.ComparisonHow do towns or flat types differ?Compare the same period and keep sample sizes visible.ChangeDid the market evidence move over time?Use year-by-year registered resales; do not treat mix changes as a valuation.BoundaryWhat can this not tell me?It cannot value a particular flat or replace current property-specific checks.