How to correct cadastral data: complete guide to the cadastral application


Emma Potter

The correction of cadastral data represents a crucial aspect in the management of properties, both land and buildings, directly affecting taxes, duties, and validity of deeds such as mortgages or sales.

In Italy, the Revenue Agency allows the correction of these data through acadastral applicationa process that can be carried out either online or by going personally to the Provincial Territorial Offices.

This guide aims to provide a comprehensive overview of how correct cadastral errorsoutlining types of errors, necessary documentation, costs, and timescales.

Types of errors and possible corrections

When we talk about cadastral data correction, we are referring to a series of errors that may be present in cadastral surveys, both for the buildings and land registers. The most common errors can be grouped into three main categories:

  • Header correction or rectification: This category includes errors relating to name and surname, date and place of birth, tax code, ownership quotas and the registration of transfer applications. To correct these errors it is necessary to provide the details and a copy of a title of provenance or a declaration of succession.
  • Correction or rectification of property in the buildings register: Includes errors such as the attribution, rectification or variation of the identifier, failure to process the notification of variation or new construction, problems relating to the plan, toponymy, matching and rasterization of the cadastral plan, as well as errors on the surface and on metric data. For this category, you must provide details and a copy of a new construction or variation declaration.
  • Correction or rectification of property in the land register: The errors here include those relating to the identifier, to the surface area/census data, to the registration of Map Type (inclusion of new buildings in the map, the expansion of existing or demolition buildings), to the subdivision, and to errors in the insertion of the classification data. The correction requires the details and a copy of a deed updating the land register.

These corrections ensure that cadastral data accurately reflects the current state of real estate, avoiding discrepancies that can affect real estate transactions, taxation, and other legal and administrative processes.

Usefulness of the cadastral request

The cadastral application not only allows the errors mentioned above to be corrected but plays a fundamental role in various contexts that influence the life of the citizen and real estate transactions.

Here are some practical examples of how it can be useful:

  • Taxes and duties: An error in the registered surface area of ​​a property can lead to an incorrect cadastral income, significantly influencing the amount of taxes and duties due (Read more: House Taxes: all taxes to be paid to the Municipality).
  • Bank loan: The correct association of the floor plan with the parcel/subordinate is essential for applying for a mortgage, given that banks require accurate data to proceed.
  • Deed of sale: To draw up a deed of sale it is necessary that the data on the document is correct (read also: The responsibility of the notary in a real estate sale). Any discrepancy can invalidate or complicate the process.

Furthermore, the Revenue Agency allows you to correct errors online relating to the owner of the property, undeclared buildings, rural buildings, and errors in the property data.

However, there are some requests that they cannot be managed onlinesuch as complaints for inefficiencies, reminders for documents not processed, revisions of the cadastral income, assistance in the use of IT procedures, and requests for general information.

Procedure for submitting the cadastral request

To correct or rectify cadastral data, a well-defined process must be followed. Here are the main steps:

  1. Filling out the application form: The first step consists in completing the cadastral application form provided by the Revenue Agency. This form requests detailed information about the property in question, the applicant's details, and the nature of the correction or rectification requested. (Download the form here)
  2. Necessary documentation: Depending on the type of error, it will be necessary to attach specific documents to the form that justify the correction, such as titles of origin, inheritance declarations, land registry update documents, variation or new construction declarations.
  3. Submission of the application: Once the form has been completed and the necessary documentation has been collected, the application can be submitted to the Land Registry Office responsible for the geographical area in which the property is located. The presentation can take place physically or, for some types of correction, online via the Revenue Agency website.
  4. Office evaluation: After submission, the Land Registry Office will evaluate the request and, if accepted, will proceed with the correction of the data. The applicant will receive a formal communication confirming the correction, after which it will be possible to request an updated cadastral survey.

The necessary documentation varies depending on the type of correction. The the cost of a cadastral variation procedure starts from €40.98and the average processing times by the Land Registry are approximately 20 working daysvarying according to the territorial office.

Simplification and support in Land Registry Correction

The bureaucratic process for correcting cadastral data can be complex and time-consuming. To simplify this process, online services are available that offer complete assistance, from filling out the cadastral application form to collecting and submitting the necessary documentation.

These services represent an optimal solution for those who seek to avoid procedural errors and wish to speed up the resolution times of their land registry practices.

Relying on industry professionals allows you to navigate the bureaucratic process with greater confidence, ensuring that every aspect of the correction is managed with attention and precision. Furthermore, some of these services offer the possibility of monitoring the progress of the case, providing regular updates and assistance in case of problems.

Practical examples of cadastral correction

The cadastral data correction process applies to a wide range of cases, including classification errors, unrecorded subdivisions, discrepancies in surface or metric data, and many others. Here are some specific examples:

  • For the landerrors such as incorrect entry of classification data, recording of incorrect fractions, or rectification of the identifier can be corrected.
  • For the manufacturedcorrections may concern the attribution of the identifier, the correction of mismatched plans or inaccurate metric data, and the correction of errors relating to consistency or reference to the plan.

These examples highlight the versatility of the correction process, demonstrating how it is possible to intervene on a vast range of cadastral issues, both for land and buildings.


The correction of cadastral data is an essential process to ensure the accuracy of the information recorded in the Cadastre, with significant impacts on taxes, duties, and real estate transactions.

The possibility of correcting this data, both independently and through specialized services, offers property owners the necessary tools to resolve any discrepancies, ensuring the correct management of their real estate assets.