How to find the cadastral sheet and parcel from an address

Type the address in the box above. The page that opens shows the plot on the Revenue Agency's cadastral map and, below the map, the municipality, the sheet (foglio) and the parcel number (particella): you see them straight away, free, without signing up. The number of the individual flat (the subalterno) cannot be worked out from the address, and further down we explain where to find it.

Sheet, parcel and unit number

The Italian land registry (catasto) splits each municipality into map sheets (fogli). There are more than 300,000 of them, drawn between 1886 and 1956 and updated ever since with surveyors' filings. Within each sheet the plots are numbered in sequence: that number is the particella, which deeds and planning drawings often call the mappale. A parcel can be a field, a courtyard, a stretch of road or the plot a building stands on, with its grounds.

The subalterno goes one level down and numbers the units inside the building. In a block of flats the third-floor flat might be subalterno 14 and the garage in the courtyard 32: different numbers, same parcel.

So the full reference for a plot is municipality, sheet and parcel, plus the section (sezione) in the municipalities that have one. Some sheets also carry an annex (allegato) or an extension (sviluppo), marked with a letter: Rimini, for example, has sheet 74 with annex C. And the parcel is not always a number: there are parcels such as 9B, or made of letters only. The property page shows section, annex and extension only where they exist.

Three ways to find them

In the deed or the visura

The purchase deed (rogito), the preliminary contract (compromesso) and the visura catastale (land registry record) give the whole reference, subalterno included. If you are selling or have inherited a home, this is the safest place to look. A buyer does not have these papers, but can ask the seller for an up-to-date visura, or at least for the flat's subalterno.

On the Revenue Agency's map

The Revenue Agency (Agenzia delle Entrate) runs the Geoportale cartografico catastale, free and with no login. It does not search by address, though: you pick the region, province and municipality, then move around the map until you reach the building. Parcels and buildings only appear once the map is zoomed in to at least 1:5,000; at that point the information button, tapped on the plot, shows sheet, annex, extension and parcel. It works well if you can recognise the building from above, less well on an estate of identical houses.

This is the map of the land register (Catasto dei Terreni). The Agency warns that if you start from the buildings register references, the ones on a flat's visura, the map sometimes finds nothing: the two archives are not yet fully linked, and a mismatch does not mean the deed is wrong.

With the search on this site

The search above does the step the Geoportale lacks. It looks up the street number in Italy's national register of street numbers (ANNCSU), takes its position and finds the cadastral plot it falls on. If the number sits at the kerb between several plots, the page highlights them all and lets you pick the building's one. If the number has no position yet, which is the case for about a third of Italian street numbers, the page asks you to tap the building on the map. If you already have the sheet and parcel you can go the other way and find the plot from the numbers.

On the same page, also free, you get the liveability index of the area (for a plot of land, a summary of its area, slope and height). The full report, which you pay for, adds the plot's area measured on the map, the street numbers linked to it and the buildings on it, together with hazards, local prices and services. Where the cadastral data comes from is explained in Cadastral maps and street numbers.

What the address does not tell you

The subalterno, the property category, the cadastral income (rendita), the floor plan and the registered holders are not open data. All but the floor plan are on the visura catastale, which since 1 January 2025 can be downloaded free from the Revenue Agency's website with SPID, CIE or CNS (Italian digital identity), even for homes you do not own. With the sheet and parcel found here, the request is half done: if you lack the subalterno, the service lists the units on the parcel and you choose. The steps are in Free visura catastale with SPID: how to get one.

The floor plan (planimetria catastale) is a different matter: the Agency only releases it to someone with rights over the property, a person they authorise or a surveyor they appoint. A buyer asks the seller for it. Mortgages and seizures are on neither the visura nor the map: they are in the property registers (registri immobiliari), and the notary usually checks them before completion.

For the same reason the report works on the plot and the building, not on the single flat, and says so.

Trento, Bolzano and the tavolare land book

In the autonomous provinces of Trento and Bolzano the land registry is run by the Provinces under the tavolare system (the libro fondiario, or land book), and the Revenue Agency does not publish the maps. The same applies to Magasa and Valvestino, in the province of Brescia. There the search finds the address and puts it on the map, but cannot identify the plot: the page says so, and the report marks the cadastral part as not available, while everything else (hazards, local prices, services) uses the address point.

In the tavolare system plots are called particelle fondiarie (land) and particelle edificiali (buildings), numbered by cadastral municipality. The two Provinces' online services are free only for your own property: for someone else's home you ask the seller for an extract of the land book, or go to the land book offices. The official pages are the Province of Bolzano land book consultation and the Province of Trento consultation of land book entries (both in Italian).

The tavolare system also applies in Trieste, Gorizia, part of the province of Udine and Cortina d'Ampezzo, but there the Revenue Agency publishes the maps and the search works. The numbers look different, though: Trieste has parcels such as 1700/4, and in Gorizia and Cortina the particelle edificiali have a dot in front of the number.

Frequently asked questions

Are particella and mappale the same thing?

Yes. Mappale is the word used in deeds and drawings, while the Revenue Agency's visura says particella. Both mean the plot number within the sheet.

Can I find out who owns a home from its address?

No. The address gets you to the plot, meaning sheet and parcel. The registered holders are on the visura catastale, which for a flat also needs the subalterno.

Is the plot area on the map the size of the home?

No. It is measured on the cadastral map drawing, covers the whole plot and is approximate. The size of the flat is on the visura, among the subalterno's details.

Why do the sheet and parcel on the visura differ from the ones found here?

It can happen in towns where the buildings register uses numbers that differ from the land register map, a mismatch the Revenue Agency is still working through. In other cases the street number falls between two plots: then it is worth checking on the map that the chosen plot is the building's.