The cadastral value of a property is a key piece of information that determines the taxable base for several taxes, such as the Property Tax (IBI), the municipal capital gains tax, and even some calculations of Personal Income Tax (IRPF). Unlike the market value, which reflects the actual price at which a property could be sold, the cadastral value is an objective valuation carried out by the administration, taking into account multiple technical and legal factors. At Immosegur, we explain what these factors are and how they affect the final calculation.