INFORMATIZATION OF THE BUILDING 
CADASTRE 
Over the last decade there has been the need to create a 
uniform dataset on buildings and parts of buildings that could 
be used as foundation for the registration of real property 
rights. It is estimated that there are approximately 1,200,000 
buildings in Slovenia (the counting was carried out by the 
Surveying and Mapping Authority of the Republic of 
Slovenia in 1999 in the framework of the project of 
photogrammetric acquisition of buildings) and approximately 
650,000 apartments. Registration of real property rights is the 
foundation of secure real property transactions as well as of 
real property taxation. Therefore, a dataset with information 
on buildings and parts of buildings was urgently needed. 
As early as in 1976, the National Land Survey Service Act 
foresaw the creation of a building cadastre, but the idea had 
never been turned in practice. The registration of buildings 
and parts of buildings was finally regulated by the Real 
Estate, State Border and Spatial Units Registration Act in 
2000, although the Surveying and Mapping Authority of the 
Republic of Slovenia had already implemented a number of 
activities aimed at creating data on buildings and parts of 
buildings. 
A project called Construction Cadastre — Operation 
Guidelines was implemented in 1994. Apart from the content 
and procedures that should be implemented in the 
Construction Cadastre, the Project had also addressed the 
issue of Construction Cadastre linkage with the Land 
Cadastre from the point of view of data and procedures. The 
Construction Cadastre was defined as a technical and 
administrative dataset on constructions and parts of 
constructions. Data and procedure models were developed so 
as to meet this definition. 
A project called Operational Scheme of the Software 
Prototype for Administering the Register of Buildings was 
implemented in 1996. In this Project the Register of 
Buildings was defined as a technical and not as an 
administrative dataset on buildings, which should function as 
an intermediate step on the way to the creation of the 
Building Cadastre. 
The Surveying and Mapping Authority of the Republic of 
Slovenia continued with the preparation of procedures for the 
acquisition and updating of data on buildings and started 
preparing the prototypes of software solutions that would 
provide support to the operation of the Central Database of 
Data on Buildings. The updating procedures relative to the 
Building Register being a technical register were considered 
in detail in 1998. The assignment focused on the procedures 
within the Building Register that would be implemented at 
the Branch Offices of the Surveying and Mapping Authority 
of the Republic of Slovenia. The content of Building Register 
studies and the method of their storage were laid down as 
well. The field acquisition of data on buildings and the 
photogrammetric acquisition of building outlines started in 
parallel to the activities mentioned above. 
At the end of 1998 the Surveying and Mapping Authority of 
the Republic of Slovenia started implementing the project 
called Setup of the Prototype of the Central Database of Data 
on Buildings. The project was completed in 1999. The 
purpose of the Project was to create a digital dataset on 
buildings and prepare a software package prototype that 
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would meet the needs defined in the drafts of legislation 
adopted later on: National Land Survey Service Act, Real 
Estate, State Border and Spatial Units Registration Act, Real 
Property Tax Act, etc. The formal legal framework for the 
creation of such a dataset was also a decision adopted by the 
Government of the Republic of Slovenia regarding the 
modernization of real estate registration. 
The Project defined the logical and the physical model of the 
database of buildings. It had also set forth its relations with 
related and already existing databases of the Land Cadastre 
and the Register of Spatial Units. The Project provided a 
functional model of procedures required for the creation, 
updating and use of data on buildings. The Project also 
included the implementation of the initial setup of the 
database on buildings based on the existing data and the 
development of a software solution prototype. 
The data model consisted of the elementary building 
attributes — building location and shape, number of floors, 
year of construction, house number, land parcel under the 
building, etc.; the procedures were differentiated, namely 
there were mass data capture procedures and individual data 
capture procedures implemented upon client’s request. 
The existing central database of buildings is a digital 
database that contains location and attribute data on buildings 
for the whole of Slovenia and that is updated on a regular 
basis. The database allows the updating of data on buildings 
on the basis of original data; it allows fast and simple access 
to and retrieval of its data, the linking to other related 
databases, data protection and secure data access. Apart from 
existing data on buildings, the database also includes 
historical data on buildings enabling the browsing of data 
using a random temporal cross-section, and data on 
procedures and data on building acquisition areas —general 
graphical layer of the spatial extent of mass data setup and 
updating procedures. The Central Database has active and 
passive links with other databases. It maintains active links 
with those databases, which are relevant for the operation of 
the central database of buildings (data from the Land 
Cadastre and the Register of Spatial Units — house numbers). 
The Database has passive links with databases that facilitate 
the use and updating of the Central Database of Buildings 
(digital orthophoto, base maps at 1:5000). 
The National Assembly of the Republic of Slovenia adopted 
the Special Conditions for Registering the Ownership Rights 
to Individual Parts of a Building with the Land Register Act 
following a fast track procedure carried out in 1999. This Act 
facilitates the registration of condominiums over a period of 
five years after its adoption. The Act stipulates the 
registration of the land under the building (footprint) with the 
Land Cadastre and the Land Register as well as the 
registration of individual elements of buildings. Technical 
data on parts of buildings are registered by the Surveying and 
Mapping Authority of the Republic of Slovenia (floor plan), 
while the Land Register adopts and uses the identifier of a 
part of a building that was assigned to the part in question 
during the floor plan verification procedure implemented by 
the Branch Offices of the Surveying and Mapping Authority 
of the Republic of Slovenia. After doing that the Land 
Register identifies the owners of individual parts of the 
building on a basis of submitted deeds. 
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