- Knowledge of the number and geographical distribution of the buildings, establishing a basic typology thereof.
- Institutions that intervene
- General description (main variables)
- Type of building, number of floors, year of construction, installations and services, type of owner, state of the building. By complete listing.
- Frequency of data collection
- Municipal o inferior
- Budgetary credits necessary for its finance in the four-year period 1997-2000 (in thousands pesetas)