The certificato di destinazione urbanistica (CDU): Italy’s zoning certificate, explained for foreign buyers

Already have a parcel in mind? The report checks it against public data, with a source and date for every finding. Open the map → €29 in English or Italian · €39 in both languages

For a buyer from abroad, the CDU matters for a second reason. It is the first official document, in the municipality’s own words, that tells you whether that olive grove can take a house, a pool or nothing at all. This guide covers when a CDU is required (and the exception that catches out many house buyers), how to get one when you do not live in Italy, what it costs at real municipal tariffs, how long it stays valid, what happens if the town hall is late, and how to read one with an English speaker’s eye. It is practical guidance, not legal advice; the check that binds is the notary’s, and for building questions your geometra or architect.

What the CDU is and what it is not

The certificate is governed by article 30 of Presidential Decree no. 380 of 6 June 2001, the Consolidated Building Act (Testo unico dell’edilizia), which took over a rule first introduced by article 18 of Law no. 47 of 1985. Law no. 68 of 1993 lists it among the documents for which municipalities charge administrative fees (diritti di segreteria).

In practice a CDU contains:

• the list of parcels it covers, identified by municipality, sheet (foglio) and parcel number (particella);
• the planning zone of each parcel under the plan in force, and often under a plan adopted but not yet approved;
• the article numbers of the plan’s implementing rules (norme tecniche di attuazione, NTA), sometimes with the text copied out;
• in many municipalities, the constraints the town hall has mapped: road and cemetery buffer zones, hydrogeological restrictions, landscape protection, flood and landslide hazard areas.

It does not tell you whether an existing building is lawful. That is a separate question, answered by the building permits on file (the so-called stato legittimo). It says nothing about mortgages or seizures, which sit in the property registers, nothing about access rights and nothing about value. A buyer who reads "zone B, residential" on a CDU and assumes the cottage on it is fully permitted has mixed up two different checks.

If you are used to English conveyancing, the closest comparison is the planning part of a local authority search: an official answer about the land’s designation, issued by the council, which your lawyer relies on. The Italian version is narrower (no road adoption, no building control history) and it is the seller who supplies it, not the buyer.

A page from a delivered report

Detail of page 19Open the full page

Source: TerrenoCheck, Diano San Pietro, parcel 444, p. 19

When a CDU is compulsory, and the 5,000 m² exception

Article 30(2) of the Consolidated Building Act says that deeds between living persons that transfer, create or dissolve co-ownership of rights in rem over land (terreni) are void, and cannot be signed or registered, unless the CDU is attached. That covers:

• the sale of any plot of land, agricultural or building;
• exchanges, and the creation of usufruct or building rights over land;
• the division of jointly owned land.

The same paragraph contains the exception that matters most to people buying a farmhouse or a villa with grounds. No CDU is needed when the land is an appurtenance (pertinenza) of a building registered in the urban building cadastre, provided the total appurtenant area is under 5,000 m². The 5,000 m² figure is therefore the limit of the exception, not a threshold for the obligation. Land that is not appurtenant to a building needs a CDU at any size, even 300 m².

Paragraph 10 of the same article exempts divisions of an inheritance, gifts between spouses and between parents and children, wills, mortgages and easements.

"Not required" does not mean "not useful". If you are buying a house with 3,200 m² and dream of a pool house, you want to know the zone of that land before you commit. Anyone can request a CDU in situations where the law does not require one; the cost and the procedure are the same.

Agricultural land

For agricultural land the CDU is almost always required and is especially informative. Italian plans divide rural land into sub-zones (productive farmland, landscape-value farmland, woodland, peri-urban) with very low building indices, and many regions reserve new rural dwellings for professional farmers. A CDU published by the Calabria regional administration, for example, shows a residential index of 0.03 m³/m² in the agricultural zone. On a 10,000 m² plot that gives 300 m³, roughly 100 m² of floor space at a notional three-metre height, and the regional law decides who may use it. Our guides on what you can build under the PRG and on agricultural land and the farmers' pre-emption right go further.

Getting a CDU when you do not live in Italy

The CDU for the deed is the seller’s job. But the moment you need one is earlier: before you sign the preliminary contract (compromesso or preliminare) and pay the deposit. There are three realistic routes.

1. Ask the seller or agent for a recent CDU. A serious seller of land often already has one, because the notary will ask for it. Check the issue date and the parcel numbers.
2. Have your own geometra request it. Most municipalities accept requests from anyone with an interest, and many now accept them only online, signed with an Italian digital signature. Pistoia, for instance, asks for PDF documents signed digitally and submitted through its online desk. A local surveyor already has the tools; you will not, unless you hold Italian digital identity.
3. Write it into the preliminary contract. If no CDU exists yet, make the purchase conditional on a certificate confirming a stated designation ("zone B2, index 0.8 m³/m², no building ban"). See our guide to the preliminary contract.

Whichever route you take, the request needs the cadastral identifiers of every parcel and, in most municipalities, a cadastral map extract with the parcels marked. Our guide to finding the foglio and particella on the cadastral map shows how to read them. A single wrong number produces a certificate for someone else’s field.

The certificate is issued in Italian only. If you rely on a translation, make sure the zone names and the NTA article numbers are copied exactly, not paraphrased.

What it costs: real tariffs from three municipalities

Every CDU carries two Italian revenue stamps (marche da bollo) of €16, one on the application and one on the certificate; the Comune di Pinerolo spells this out on its instructions page. On top of that come the municipality’s own administrative fees, set by each council. Three examples, read on 2 November 2026 on the municipalities' own websites:

For a plot made of three parcels the totals are:

• Pistoia, ordinary: €37 + 2 × €16 = €69
• Pistoia, urgent: €58 + €32 = €90
• Frosinone: €30 + €32 = €62
• Rivarolo Canavese: €20 + €32 = €52

The fee of the surveyor who prepares and files the request is extra and freely negotiated. When you see "CDU cost €150–200" online, that usually means municipal fees plus a professional fee.

Before paying for a certificate, you can see which zone and constraints the public maps show for your parcel.

Check the planning zone of your parcel in a TerrenoCheck report, from €29 → · See a sample report

Validity: one year, with a condition attached

Article 30(3) gives the certificate a validity of one year from the date of issue, provided the seller (or one of the co-owners) states that the planning instruments have not changed since. The statement goes in the deed.

The condition matters more than the date. If the council adopts a plan amendment three months after issue, the seller cannot make that statement and a new certificate is needed. In municipalities that are rewriting their plan (Emilia-Romagna, for example, is moving its towns to a new general plan, the PUG, under Regional Law 24/2017) ask for a fresh certificate even if the one you hold is only six months old.

The law refers to plans "in force or adopted", and many CDUs report both. If a line reads "zone E under the plan in force, zone F under the adopted plan", ask the planning office which rules of the adopted plan already apply to that parcel before you agree a price.

If the town hall misses the 30-day deadline

The 30-day deadline in article 30(3) is mandatory, and paragraph 4 says what happens if the municipality misses it. The certificate can be replaced by a declaration of the seller (or a co-owner) stating that the application was filed and giving the planning designation of the land under the plans in force or adopted, or stating that no plan exists.

For a buyer this is a weaker document: the designation is written by the person selling you the land, not by the council. If the seller relies on it, have your own surveyor check the plan maps and the NTA before signing, or ask for the urgent procedure where one exists. In Pistoia the urgent route costs €21 more in fees than the ordinary one for up to ten parcels.

A deed without a CDU

Article 30(2) makes such a deed void. Paragraph 4-bis offers a cure: the deed can be confirmed by a later deed in the same form with the certificate attached, and one party alone can make it. If you are buying land that was itself bought a few years ago, look in the seller’s deed for the CDU among the attachments. If it is missing and the land was not an exempt appurtenance, raise it with the notary before you go further.

Reading a CDU: what to look for

Formats differ (the Comune di Brescia publishes its own model, for instance), but the parts you need to check recur everywhere.

Header. Protocol number, request date, issue date. The year of validity runs from the issue date.

Parcel list. Compare every number with the cadastral extract and the preliminary contract. After a recent subdivision the municipality may still list the parent parcel.

Zone. For each parcel, the zone and the NTA article. Watch for two things. A parcel split between zones ("part B2, part E1") needs a measured split from your surveyor, because 40% buildable is not 100% buildable. A zone for public services, roads or green space (often marked F or "standard") usually means you cannot build privately there.

Constraints. Buffer zones, hydrogeological and landscape constraints, flood or landslide hazard. Some CDUs end with a sentence saying the certificate does not cover constraints that are the competence of other authorities. Read it: it tells you what still has to be checked elsewhere. See our guides on flood and landslide risk and on the landscape constraint.

Contaminated sites. Under article 251 of Legislative Decree 152/2006, where a site-specific risk assessment finds that risk thresholds are exceeded, that fact has to be recorded in the CDU among other places. A reference to a remediation procedure is a reason to stop and read our guide on asbestos, radon and contaminated land.

Building indices. Do the arithmetic on your own plot. A plot index of 0.8 m³/m² on 1,250 m² gives 1,000 m³; at a notional 3 m height that is about 333 m² gross floor area. If the NTA also set a minimum plot of 1,500 m², your 1,250 m² gives you nothing.

Words you will meet on a CDU

If the CDU says something you did not expect

The "building plot" is agricultural. Do not sign the preliminary contract at a building-land price. If you already signed with a condition on the designation, the condition has failed; if you signed without one, talk to a lawyer about the seller’s statements.

Part of the plot is earmarked for a road or public facility. Ask your surveyor for the exact area affected and whether the municipality has started a public works project there, then renegotiate on the usable area.

A constraint nobody mentioned. Constraints do not always rule out building, but they add permits and time. Get a written estimate from your surveyor of what can realistically be approved, and how long it takes, before deciding.

The plan is being changed. Ask the planning office where the procedure stands and check whether the period for comments (osservazioni) set in the adoption notice is still open.

An obvious error (wrong parcel, a zone that does not match the plan map). Ask the office in writing for a correction, citing the map sheet and article. Do not complete with a wrong certificate.

You or your surveyor will read the CDU itself. Before you request it, the TerrenoCheck report shows, for the parcel you pin on the map, the planning zone where it is published in digital form, landscape and environmental constraints, flood and landslide areas and mapped buffer zones, each with source and date, in English and Italian. It does not replace the municipal certificate and is neither a legal opinion nor a valuation.

Check zone and constraints for your parcel in a TerrenoCheck report, from €29 → · See a sample report