Fraudulent Purchase Contracts in Mexico: What to Check

Fraud in a purchase contract can wipe out a lifetime of savings in a matter of weeks. Unlike other real-estate scams that are easy to spot, a doctored contract often looks perfectly legal at first glance: it has signatures, stamps and even convincing legal language. The problem is that the details that make it fraudulent are hidden in technical clauses, forged identity data or promises that are never formalized before a notary. In this guide we walk through, step by step, what you should demand and which red flags you cannot afford to overlook before putting your signature on anything.

1. What makes a contract fraudulent

Not every poorly drafted contract is a fraud, but it is an open door for one to happen. A fraudulent purchase contract generally has at least one of these characteristics:

• Seller without legal authority: the person signing is not the owner of record, is acting under an expired or forged power of attorney, or is representing an estate without having completed the probate proceedings (juicio sucesorio).
• Double sale: the same property is offered to and signed with more than one buyer at the same time, betting that only one of the contracts will end up registered in the Registro Público de la Propiedad (RPP), Mexico's public property registry.
• Altered property data: measurements, boundaries or the folio real (registry file number) that do not match the deed (escritura) or the certificate of liens (certificado de libertad de gravamen).
• Pressure to sign privately: a notary is deliberately kept out of the process, with the excuse of "saving costs" or "urgency."
• Payments outside the contract: you are asked to wire a significant deposit before signing any formal document, with no receipt or verifiable proof of payment.

To get the full picture of the scams that exist in the Mexican market, it's also worth reading our guide on common real-estate frauds in Mexico.

2. Red flags in the document

Before getting into the details of each clause, there are general warning signs that should set off alarms as soon as you see the draft contract:

3. Clauses to review word by word

A contract can look professional and still hide traps in the fine print. These are the clauses where risk tends to hide:

1. Purpose of the contract: the property must be described exactly as it appears in the current deed (measurements, boundaries, folio real number).
2. Payment terms: be wary of clauses that require you to deposit the down payment or the full price before a formal promise-to-sell agreement exists or before signing before a notary.
3. Penalty clauses: check whether penalties for breach are disproportionate for the buyer alone and almost nonexistent for the seller.
4. Condition of the property and liens: the contract must expressly state that the property is free of mortgages, attachments or litigation; always cross-check it against an up-to-date certificate of liens (certificado de libertad de gravamen).
5. Rescission clause: there must be a clear and fair mechanism to cancel the transaction and recover the money paid if something is not fulfilled.
6. Jurisdiction and notarial authority: confirm which notary's office will formalize the final deed; a serious contract never avoids mentioning this step.

4. Verifying identity and ownership

Most fraudulent purchase contracts share the same origin: someone who is not the legitimate owner, or who no longer has the authority to sell, manages to pass as the seller. Before signing any document, verify:

• That the seller's official ID matches exactly the name that appears on the registered deed.
• That the property's folio real in the Registro Público de la Propiedad shows the seller as the current owner, with no notations of litigation or attachment.
• If they are acting under a power of attorney, that it is still valid, is specific to acts of ownership (actos de dominio), and that you can confirm its authenticity with the notary who issued it.
• If it is an inherited property, that the probate proceedings have already concluded and there is an adjudication deed in the seller's name.
• That there are no unpaid property taxes (predial), water bills or maintenance fees that could complicate the transfer.

5. What to do if you suspect fraud

If you spot any of the signs above, do not sign and do not hand over any money. The recommended steps are:

• Halt the transaction immediately and ask in writing for an explanation of the inconsistencies.
• Go to an independent notary public (not the one the seller suggests) to review the file before continuing.
• Request an up-to-date certificate of liens directly from the Registro Público de la Propiedad in your state.
• If you have already paid money and confirm signs of fraud, file a complaint with the Ministerio Público (public prosecutor's office) and, where applicable, with Profeco or your state's real-estate consumer protection agency.
• Keep copies of everything: contracts, payment receipts, and messages and emails with the seller or intermediary.

Buying safely also means choosing carefully where you look for property and how you calculate the total costs of the transaction. You can use the closing cost calculator (gastos de escrituración) to anticipate legitimate costs and spot charges that don't add up, and browse verified properties in houses for sale or apartments for sale. If you have already been the victim of a transaction like this, review the concrete steps in what to do if you were the victim of real-estate fraud.

Frequently asked questions

Is a private purchase contract legally valid in Mexico?

It can have effects between the parties who sign it, but it does not fully transfer ownership and is not enforceable against third parties until it is formalized before a notary public and registered in the Registro Público de la Propiedad. Relying solely on a private contract is one of the most common risks in a fraudulent purchase contract.

How do I know if the seller is really the owner of the property?

Request the up-to-date folio real from the Registro Público de la Propiedad and compare it against the seller's official ID and the public deed. If they are selling through a power of attorney, confirm its validity and scope directly with the notary's office that issued it.

What should I do if I already signed a contract and suspect it is fraudulent?

Stop any further payments, gather all documentation and receipts, and seek legal advice right away. Depending on the case, it may be necessary to file a criminal complaint and, in parallel, begin civil actions to try to recover the money paid.

Is it safe to pay the down payment before signing before a notary?

In general, any payment should be backed by a formal document (for example, a promise-to-sell agreement reviewed by a professional) and, where possible, protected through a guarantee arrangement such as a trust (fideicomiso) or an escrow deposit, rather than being transferred directly to the seller with no safeguard at all.