The price moves with the scope: demolition, the waterproof membrane (membran), moving pipes, and scaffolding. Two quotes with the same total can cover different work. Electrical and plumbing parts still need the authorised trades.
In København most jobs are in apartment buildings: Vesterbro, Nørrebro, Østerbro, Amager and Frederiksberg. Access, parking, and whether scaffolding can stand in the courtyard move the price more than the postcode. The same 4 businesses as the Danish page: Genno ApS, ODAN ApS, KN BYG A/S, JAKON A/S.