Cadastral and planning conformity: what actually stops a deed in Italy

These are the two phrases that, said by a notary ten days before completion, end a sale. They are worth the half hour it takes to understand them.

Cadastral conformity: the flat must resemble its floor plan

Article 29(1-bis) of Law 52/1985 provides that public deeds and authenticated private agreements transferring rights over existing buildings must contain, on pain of nullity, the cadastral identification, the reference to the floor plans filed at the land registry, and the owners' declaration that cadastral data and plans match the actual state of the property.

Practice distinguishes two levels. Objective conformity concerns the match between the real state and the filed plan: that is what enters the deed as a formal condition. Subjective conformity concerns whether the person registered at the cadastre is the actual owner: verifying that is the notary's job.

Typical discrepancies are mundane and extremely common: a partition removed, a balcony enclosed, a bathroom carved out of a storeroom, kitchen and bedroom swapped. Nobody remembers them, because they usually predate the current owner.

Planning conformity: the deed must cite the building title

Article 46 of Presidential Decree 380/2001 requires the deed to mention the building title: licence, concession, building permit or the alternative filings.

Here the Court of Cassation in joint session, judgment 8230/2019, settled a point worth knowing: the nullity under that rule is textual — it strikes the absence of the declaration in the deed, not the substantive mismatch between building and permit. In practice: where the declaration is present, the deed is valid even if the property departs from the permit.

That does not make discrepancies irrelevant. It means they stop being a question of the deed's validity and become a question of price, warranties and — in serious cases — planning sanctions against the owner.

When they surface (always late)

Three typical moments, in order of frequency: the bank's valuation for the buyer's mortgage, the notary's checks before the deed, and the surveyor hired by a careful buyer. All three land after the price has been agreed, which is why a discrepancy found then costs twice — in money and in negotiating position.

How to check in advance

Two moves, both cheap:

1. Cadastral search and floor plan. Compare the plan with the flat. You do not need a professional to notice a missing wall.
2. Planning file request at the town hall. Ask for a copy of the building file and compare it with the current state. In Trieste, as everywhere, responses are not instant — another reason to move before the listing, not after.

If something is off, a surveyor or architect can tell you in one visit whether this is a cadastral update (a DOCFA filing, modest cost and time) or a planning amnesty application, which is a different story in time, cost and certainty of outcome.

What happens if it is not fixed

Three roads, and all three deserve saying out loud:

• fix it first, and the sale proceeds normally;
• sell while disclosing the position, with the buyer pricing it in and the notary assessing whether the deed can proceed;
• do not sell. It happens, above all where the buyer needs a mortgage: banks lend against what is regular.

The practical rule

Do the check at the start, while it is still a check. Done at the end, it is an accident. We are blunt about this with everyone: before publishing a listing, the most important document is not the photograph — it is the floor plan.

This is an informative guide, not legal or technical advice: every property differs. Verification belongs to your surveyor and notary. For your own case write to info@triesteimmobiliare.com or call +39 040 2473628.