Property developer (deweloper)
A business that builds flats or houses and sells them under a developer agreement. Its obligations towards buyers are set out in the Developer Act of 2021.
Among other things, the developer must operate a housing escrow account, provide an information prospectus and pay contributions to the Developer Guarantee Fund. You can check the company's details in the KRS (National Court Register), and the legal status of the land in its land and mortgage register.