For the needs of spatial planning and for implementing the policy of Land Registry, the Spatial Management Act (hereinafter: ZUreP-3) introduces a new record, called the Register of building land. It contains information on built-up land and non-built-up building land. - Built-up land is divided into associated building land, the associated land of construction engineering facilities and construction lots. The difference between the associated building land and the associated land of construction engineering facilities is that the associated building land will be determined in a process of mass capture, while the building lots are determined in the administrative procedure. The associated building land is therefore the first approximation of the building lot. - Non-built-up building land is classified into development stages which are determined by ZUreP-2 according to their equipment with public infrastructure, the status of the legal regime on land and the regulation of land with spatial planning documents. The Register of building land is in accordance with the ZUreP-3 intended for the planning of usage land or new building land in the process of preparation of municipal spatial planning documents, planning of utility equipment, implementation of Land Registry policy, rehabilitation and ensuring adequate parcel and ownership structure, ensuring affordable land for residence and work, management of land in the public interest and for the assessment of duties on building land and evaluation of building land. Register of building land is also the basis for providing information on developmental stages and other properties of building land for interested investors. The Register of building land will enable the implementation of Land Registry policy, increase the awareness of investors, and thus significantly contribute to a more successful development.