Compare purchase price per area on the same basis
Identify area basis, asking or transaction price and date before comparing price per area.
Check the price and area inputs
Retain the source of each price and area: current asking price, quotation or known transaction, and the area definition and unit. Do not fill an unresolved area from another page merely to produce a complete-looking ratio.
A common area basis makes the arithmetic comparable, but floor, condition, location and possession remain separate decisions. One ratio does not capture them all, and a market index is not an individual valuation.
Identify every figure
Mark inconsistent bases before comparing.
| Item | Record | Follow-up |
|---|---|---|
| Price | Type, date and source | Separate asking and transaction prices |
| Area | Basis, unit and document | Use a common basis |
| Ratio | Price divided by confirmed area | Check units |
| Other differences | Floor, condition and possession | Compare separately |
Illustration: the same price and different areas
For hypothetical HK$6 million prices and confirmed saleable areas of 600 and 500 square feet, the ratios are HK$10,000 and HK$12,000 per square foot. These are input ratios, not valuations or quality scores.
Keep the wider comparison
- Area bases match
- Sources and dates are retained
- The ratio does not replace viewing and document checks