Buying a home is a significant milestone — and the Promise of Purchase and Sale Agreement (CPCV) is often the first formal guarantee of that commitment. For this reason, in this article we explain, in a practical and simple way, what it is, what it is for, which clauses it should include and how to protect your interests.

What is a Promise of Purchase and Sale Agreement?

The CPCV is a preliminary contract in which the promissory seller commits to sell and the promissory buyer commits to purchase a property at a future date, under agreed conditions. It does not replace the public deed, but it creates contractual obligations that can be enforced in court if one of the parties fails to comply. In Portugal, its structure and effects are based on the Civil Code — and it is an essential instrument for formalizing commitments in the purchase of new or existing housing.

What is a CPCV for?

1. To formalize the agreement between buyer and seller before the deed.
2. To reserve the property for the buyer while financing or legal preparations are underway.
3. To define price, deadlines, deposit (earnest money) and payment conditions.
4. To include protection clauses (e.g. suspensive condition for loan approval, guarantees in construction).
5. To establish penalties and consequences in case of breach (loss of deposit, obligation to compensate, specific performance).

Types of CPCV and the importance of the suspensive clause

There are two types of CPCV: simple (binding without conditions) and with a suspensive clause — highly recommended when the buyer depends on bank financing. The suspensive clause conditions the obligation to complete the deed on obtaining financing within a stipulated period: if financing is refused, the contract becomes void and the deposit must be returned (or not charged) according to what is written.

For purchases under construction, always use clauses that protect deadlines, material quality and delivery.

Deposit, earnest money and security deposit: practical differences

• Deposit / confirmatory earnest money: amount paid as a guarantee of the contract; it is forfeited if the buyer withdraws without legal reason.
• Penitential earnest money: allows termination of the contract through loss of the deposit (or double refund by the seller).
• Security deposit: amount held to guarantee obligations, usually retained until full compliance with conditions.

The contract must clearly state the type of payment and the consequences of withdrawal by each party.

Essential clauses that should never be missing

A well-drafted CPCV protects both parties. Key clauses include:

• Full identification of the parties (with tax numbers).
• Identification of the property (registry, tax record, boundaries).
• Price and payment method (deposit, deadlines, financing).
• Deadline and place for signing the deed.
• Suspensive conditions (loan approval, licenses, habitation permit).
• Seller’s declarations and guarantees (property free of charges, debts, licensing).
• Penalties for breach and termination regime.
• Clause defining who pays IMT, stamp duty, notary and registration costs (or agreement between parties).
• Signatures, date and indication of witnesses or notarization when relevant.

CPCV in off-plan purchases: what to add

When buying from a project, include clauses that regulate:

• Construction schedule and payment phases.
• Bank guarantee or construction completion insurance.
• Quality standards, technical specifications and right to final inspection.
• Penalties for delays and resolution mechanisms.

Requiring contractual guarantees is essential to avoid risks of delays or non-compliance by the developer.

Most common risks and how to mitigate them

• Financing refused: include a suspensive clause.
• Property with charges: request land registry certificate and seller’s declaration of debts.
• Construction delays: request bank guarantee and penalty clause.
• Unprotected deposits: prefer escrow accounts or clearly defined written conditions.

Having a lawyer review the CPCV significantly reduces risks.

Best practices when negotiating a CPCV

1. Do not sign without reading and understanding all clauses — request written clarification.
2. Negotiate realistic deadlines for loan approval and construction completion.
3. Record in writing who pays each tax and expense.
4. Keep proof of deposit/earnest payments.
5. Use real estate mediation or legal advice for complex clauses.

Quick checklist before signing

• Verify registry and certificates.
• Confirm identities and authority of signatories.
• Confirm type and amount of deposit/earnest money.
• Ensure suspensive clause for financing (if needed).
• Confirm deadlines and penalties for delays.
• Obtain a signed copy of the CPCV from all parties.

In summary, never overlook the CPCV when buying or selling a home

The Promise of Purchase and Sale Agreement is the secure foundation for any real estate transaction. When properly drafted, it protects buyer and seller, clarifies responsibilities and reduces uncertainties — especially in purchases dependent on financing or under construction.