Abusive Clauses in a Pre-Sale Contract: How to Spot Them

Abusive clauses in a pre-sale contract are the ones that let the developer change the project, the price or the date at will, release them from liability, or force you to give up your rights. Mexico's Federal Consumer Protection Law (Ley Federal de Protección al Consumidor, LFPC) declares them invalid in adhesion contracts: they are treated as "not written," even if you signed them. The most common are an open-ended delivery date, penalties that only punish you, retention of your down payment if you cancel, and a waiver of your right to go to Profeco (Mexico's consumer protection agency). This guide shows how they are worded, how to spot them before you sign, and what to do if they are already in your contract.

What an abusive clause is and what the law says in Mexico

Almost no pre-sale buyer negotiates their contract line by line. The developer hands over a pre-printed form, identical for everyone, and you just fill in your details and sign. That is an adhesion contract, and it is exactly the kind of contract the LFPC watches most closely, because one party writes everything and the other can only accept or walk away.

A clause is abusive when it breaks the balance between the parties: it gives the developer rights you don't have, or takes away rights the law gives you. Article 90 of the LFPC lists the clauses that are not valid in an adhesion contract and that Profeco must not register. In short, they are the ones that:

• Allow the supplier to modify the contract on its own or release itself from its obligations without your consent.
• Release it from civil liability, unless you are the one in breach.
• Shift its liability onto you or a third party.
• Set shorter limitation periods than the legal ones for you to file a claim.
• Require special formalities before you can sue the supplier.
• Force you to waive the protection of the law or send you to foreign courts.

For new housing there is a more specific rule: NOM-247-SE-2021 sets the minimum information and elements the consumer contract must contain, requires the contract template to be registered with Profeco, and calls for reciprocal contractual penalties for both parties. In addition, the Federal Civil Code (article 1843) states that a contractual penalty cannot exceed the value of the main obligation.

If this is your first pre-sale and you are still comparing options, start with our guide to buying in pre-sale: advantages and risks, and if you want to see what a balanced contract looks like in a traditional purchase, check out the home purchase contract (contrato de compraventa).

The 10 most common abusive clauses in a pre-sale contract

They rarely show up with the word "waiver" in bold. They are usually written in neutral language, buried in the "general provisions" section. This table summarizes how they read in practice and what to ask for instead:

The ones that cost the most: date, cancellation and refund

Clauses 1, 6 and 7 usually come together and are the most expensive. With an open date, the developer is never late; with a 100% cancellation penalty, you cannot get out; and with a refund "when the unit is resold," even if you get out, your money stays trapped in the project. If you are already dealing with a delay, read what to do if the developer is late on delivery.

The ones that look harmless: addresses, notices and jurisdiction

Also check the procedural fine print. A clause that requires you to give notice "only by certified mail to the developer's address" (which later changes), or that sends you to litigate in another city, doesn't take your money right away, but it makes claiming so expensive that you give up. Ask that notices be valid by email to a fixed address and that jurisdiction be that of the place where the property is located.

How to review the pre-sale contract before signing

The best time to remove an abusive clause is before handing over the reservation deposit. Afterward, negotiating is much harder. Follow this order:

1. Ask for the full contract before paying. Not the sales summary or the "offer letter": the contract you will sign, with its annexes (floor plans, finish specifications and payment schedule). If they won't give it to you, you already have your answer.
2. Verify that it is registered with Profeco. Ask for the registration number of the adhesion contract template and compare it with the document they hand you. If the text you are signing differs from the registered one, point it out.
3. Look for key words. "May modify," "at its sole discretion," "without liability," "waives," "will remain in favor," "approximately," "estimated." Each one deserves a question.
4. Compare the penalties. Put side by side what you pay if you fall behind or cancel and what the developer pays if it is late or defaults. They should be equivalent.
5. Check who receives your money. Payments should go to an account in the developer's name or, better yet, to a guarantee trust (fideicomiso de garantía), never to the sales agent's personal accounts.
6. Confirm the permits and the project's registration. A perfect contract is worthless if the project has no building permit. Use our guide to verify a developer's permits and, if you are buying with a mortgage, check that the home is in the RUV (Registro Único de Vivienda).
7. Calculate the total cost. Add to the price the closing costs you will pay at the end; you can estimate them with the closing costs (gastos de escrituración) calculator and compare with what the contract says they will charge you.

How to negotiate changes with the developer

Just because the contract is an adhesion contract doesn't mean it is untouchable. Serious developers accept adjustments, especially in early pre-sales, when they need to sell. The key is to ask for specific changes and to get them in writing:

• Use an addendum or amending agreement (convenio modificatorio) signed by the legal representative, not an email from the sales agent. The agent usually has no authority to bind the company.
• Propose alternative wording. Instead of "remove that clause," hand over the text you want: "delivery will be no later than June 30, 2027, with a grace period of 90 calendar days; after that, the developer will pay a penalty of 1% per month on the amount paid."
• Prioritize three points: a fixed date with a reciprocal penalty, a refund with a fixed deadline if either party cancels, and a maximum tolerance in square meters and finishes. If you get those three, you have eliminated most of the risk.
• Ask for a signed copy of everything, including annexes and floor plans initialed on every page.

If the developer refuses to change even a clearly unbalanced penalty, treat that refusal as information: that is how they will behave when a real problem comes up. It is also worth knowing what happens to your money in the worst-case scenario; we explain it in if the developer goes bankrupt: what happens to your money and your home.

Prefer to avoid construction risk? Compare with already completed properties at apartments for sale or houses for sale. And if you are a developer with transparent contracts, that is a selling point: you can list your development on Inmobiliaria32.

If you already signed a contract with abusive clauses

All is not lost. Since the LFPC treats those clauses as not written, you can claim as if they did not exist. The usual path is this:

1. Document everything and claim in writing

Gather the contract, annexes, payment receipts, the project's advertising (brochures, website screenshots, messages from the sales agent) and photos of construction progress. Advertising counts: what the developer publicly offered also binds them. Then send a letter identifying the clause, why you consider it abusive and what you are asking for, with proof of receipt or, better yet, through a notarial notification.

2. File a complaint with Profeco

Profeco offers free conciliation between consumer and supplier. At the hearing you can ask that the clause be set aside and that everything else be honored (delivery, refund, penalty). If several buyers in the same development have the same problem, ask about a collective complaint: it carries more weight and costs everyone less.

3. If there is no agreement, a civil lawsuit

Profeco does not enforce judgments. If conciliation fails, a lawyer can sue for nullity of the clause, performance, or rescission of the contract with a refund of what you paid. Act soon: even if the contract says you have "30 days to claim," the deadlines that count are the ones set by law.

Frequently asked questions

Is an abusive clause valid if I signed it?

No. In adhesion contracts with consumers, the LFPC treats as not written any clauses that allow the supplier to modify the contract on its own, release it from liability, or force you to waive your rights, even if you signed them. The rest of the contract remains in force.

Is it legal for the developer to keep my entire down payment if I cancel?

A penalty for canceling is valid if it is proportional and reciprocal, but keeping everything you paid regardless of the amount is questionable: the Federal Civil Code prevents the penalty from exceeding the main obligation, and NOM-247-SE-2021 calls for equivalent penalties for both parties. Profeco can review it in conciliation.

How do I know if the pre-sale contract is registered with Profeco?

Ask the developer for the registration number of its adhesion contract template and verify that the text you are signing matches the registered one. If it has no registration or the contract is different, you can point that out in your complaint to Profeco.

Can I ask for changes to an adhesion contract?

Yes. You can propose specific changes and formalize them in an addendum or amending agreement signed by the developer's legal representative. Prioritize a fixed date with a reciprocal penalty, a refund with a fixed deadline, and a maximum tolerance in square meters and finishes.

What do I do if the developer changed the finishes or the square footage of my apartment?

Compare what was delivered with the floor plans and specifications attached to the contract and with the advertising. If the difference is significant, claim in writing a discount, a correction or rescission, and if they don't respond, file a complaint with Profeco. A clause that allows them to change everything without liability is not valid.