Documentation of statistics: Market Value for Households Real Estate
The adjustment factor is the same within a geographic area, even though the actual sales value can vary a lot due to e.g. differences in the location of the owner-occupied dwellings (amenity), which are not reflected completely in the official real estate valuations.
https://www.dst.dk/en/Statistik/dokumentation/documentationofstatistics/market-value-for-households-real-estate
Documentation of statistics