Average price per 1 m² of usable floor area of residential premises sold during a given period and in a given area. It is calculated as the ratio of the total value of purchase–sale transactions of residential premises to the total usable floor area of those premises.

Calculations take into account data on market transactions, i.e. sales on the free market (with some exclusions, e.g. sales between related parties), sale without a tender procedure and sale under a tender procedure.