The preliminary contract for real estate purchase and sale is a central instrument in negotiation practice, but it frequently raises delicate questions of interpretation regarding the period of effectiveness, the statute of limitations on rights, and the effects of the passage of time.
The correct identification of the applicable legal regime is essential in assessing whether and how far a party may demand the stipulation of the definitive or assert other remedies.

The legal framework: article 2645-bis of the Civil Code.

The main normative reference isArticle 2645-bis of theCivil Code, which regulates the transcription of the preliminary contract.
Paragraph 3 stipulates that:

“The effects of the transcription of the preliminary contract shall cease and shall be deemed as never produced if within one year from the agreed date for the conclusion of the final contract, and in any case within three years from the transcription, the final contract, an executory act of the preliminary contract, or the court application pursuant to Article 2652, No. 2, Civil Code, is not transcribed.”

Thus, the rule introduces a dual period of effectiveness, operating whichever expires first:

• One year from the scheduled final date;

• Three years from the transcription of the preliminary.

The Supreme Court has clarified that these rules do not affect the validity of the preliminary, but only the reservation effects of the transcript (Cass. civ. sec. II, March 16, 2018, no. 6550).

Transcribed and untranscribed preliminaries: a decisive distinction

It is crucial to distinguish between:

• transcribed preliminaries, subject to the special discipline of Article 2645-bis of the Civil Code;

• untranscribed preliminaries, governed by the general principles of the law of obligations.

For untranscribed preliminaries, case law is consistent that the right to enter into the final contract is prescribed in the ordinary term of ten years.

The Supreme Court has stated that:

“The right to the conclusion of the final contract arising from the preliminary contract is subject to the ordinary ten-year statute of limitations, commencing from the expiration of the term provided for the conclusion of the final contract.”
(Cass. civ., sec. II, Jan. 19, 2017, no. 1364).

Accordingly, the Court of Rome, sent. n. 14120/2024, reiterated that the statute of limitations runs not from the date of the preliminary, but from the expiration of the agreed term for the final.

The deadline for finality: essential or ordinal?

One of the most controversial issues concerns the qualification of the time limit set for entering into the final contract.

According to established case law:

• the term is not essential as a rule;

• essentiality must emerge clearly and unambiguously from the contract or context.

The Supreme Court made it clear that:

“The essentiality of the deadline cannot be inferred from the mere expression ‘by and no later,’ but requires proof that the parties intended to link the loss of economic interest in the contract to its unnecessary expiration.”
(Cass. civ., sec. II, April 27, 2022, no. 13156).

La Court of Appeals of Genoa, sent. n. 342/2025, clarified that the assessment should be conducted:

• Based on the overall tenor of the contract;

• Of the nature of the transaction;

• Of the set of interests pursued by the parties.

Otherwise, the Court of Milan, sent. n. 6434/2024, recognized the essentiality of the term when:

• the preliminary included an express ineffectiveness clause;

• the term was related to the duration of the surety bond issued as security.

The waiver of the essential term

Even when there is an essential time limit, the interested party may waive it, even tacitly.

According to case law:

“The waiver of the essentiality of the term may be inferred from concluding conduct inconsistent with the intention to avail of it”
(Cass. civ. sec. II, Feb. 5, 2016, No. 2313).

La Court of Appeals of Venice, sent. n. 524/2025, identified as indices of waiver:

• The continuation of the relationship beyond the term;

• The occupation of the property;

• The payment of installments, charges or mortgages;

• The absence of timely challenges.

Preliminary and conditions precedent or termination

Particular attention should be paid to preliminaries that are conditional, such as the issuance of a building permit or obtaining financing.

In such cases:

• the effective date is closely related to thefulfillment of the condition;

• failure to fulfill within the time limit results inthe ineffectiveness of the contract.

La Court of Appeals of Rome, sent. n. 5242/2025, clarified that where there is a condition precedent with a final term, the contract does not take effect if the condition is not fulfilled in a timely manner.

Prescription of rights arising from the preliminary

For untranscribed preliminaries, the 10-year statute of limitations applies:

• The right to the stipulation of the definitive;

• the right of withdrawal;

• The right to damages;

• The application under Article 2932 of the Civil Code.

The Court of Paola, sent. n. 933/2024, reiterated the application of Articles 2934, 2935 and 2946 Civil Code, confirming that the passage of time can preclude any judicial protection.

Conclusions

The period of effectiveness of the real estate preliminary contract is not a unitary notion, but depends on:

• Transcription or not of the preliminary;

• essentiality of the term;

• Presence of conditions;

• Subsequent behavior of the parties.

Jurisprudence, both of legitimacy and merit, favors a substantive and functional interpretation, attentive to the actual negotiating will and the balance of interests.
A proper evaluation always requires a timely analysis of the contractual clauses and the concrete context of the transaction.