Mexico's Restricted Zone: The 50km Coastal Rule Explained

Mexico's restricted zone is the rule that shapes buying property in Mexico near the coast. If you are buying property in Mexico's restricted zone — and on the Oaxaca coast you almost certainly are — here is what that means in plain language. The zone sounds like a prohibition. In practice it is a procedure: a well-defined legal path that has carried foreign ownership of Mexican coastline for fifty years. This article explains the rule, the history behind it, and exactly how it touches your purchase. We are not lawyers and this is not legal advice, but this is the plain version you can carry into the process. For the broader question of whether foreigners can buy at all, start here.

The zone

What the restricted zone is

The restricted zone — zona restringida in Spanish — is the strip of Mexico where foreigners cannot take direct title to land. It is defined by two distances in Article 27 of the constitution: everything within 50 kilometers of the coast, and everything within 100 kilometers of either border. On a map it looks like a collar around the country: the entire Pacific and Gulf shorelines, plus a wide band along the borders with the United States and Guatemala.

Article 27 is the same constitutional article that created the ejido system of community land. It was written in 1917, and one of its aims was to keep Mexico's edges — the coastline above all — in Mexican hands. The rule still stands, and it draws a clean line: your nationality matters less than where the land sits. A lot ten kilometers inland from Mazunte is inside the zone. A lot in Oaxaca City, three hundred kilometers from the sea, is not.

The rule is about where the land sits, not who you are.

The practical effect is simple. Inside the zone, you cannot take title in your own name. Outside it, you can. That single distinction drives everything else in this article.

The history

Why it exists: sovereignty & the 1917 constitution

The rule is a product of its era. In the early twentieth century, Mexico had spent decades watching foreign companies — mostly American and British — take control of mines, railroads, oil fields, and vast tracts of land. The 1917 constitution, drafted after the revolution, answered that history by reserving the country's most sensitive territory: the borders and the coast. The intent was sovereignty, not inconvenience. A coastal strip controlled by foreign owners was, in that era's view, a threat to the nation itself.

Enforcement came in stages. The original constitutional language was refined over the years, but it was the 1973 law regulating foreign investment that created the fideicomiso as the legal path. The idea was elegant: a Mexican bank would hold the title as trustee, a foreigner would be the beneficiary with full rights to use, build, rent, and sell, and the land would remain — on paper — safely inside the Mexican system. The trust would be approved by the Ministry of Foreign Affairs and run in 50-year terms.

Fifty years on, the mechanism works as designed. The fideicomiso is not a loophole. It is the law's own answer to the rule the law created.

Your position

What it means for foreigners

If the land you want is inside the zone, you do not get a deed in your name. Instead, a Mexican bank holds the title as trustee — the fiduciario — and you are the beneficiary, the fideicomisario. The word "trust" worries people. It should not. The bank's job is administrative: hold the paper, keep the records, follow your written instructions. It cannot use the property, rent it, profit from it, or sell it. The land forms a separate estate, so even the bank's own troubles cannot touch it.

You, the beneficiary, hold every right that matters. You can build on the property, rent it out, sell it whenever you choose, use it as security for financing, and pass it to your heirs. When you sell, the buyer simply becomes the new beneficiary. When you die, your heirs take your place. The trust is your ownership — expressed in a structure the law accepts.

Nothing about daily life changes. You pay the property taxes, you carry the insurance, you make the decisions. The only difference is where the title sits, and who the law calls the trustee. If you want the step-by-step version of how the trust is created, we cover the whole sequence here.

Inland

Outside the zone: direct ownership

Outside the restricted zone, the whole apparatus disappears. Foreigners buy land the same way Mexicans do: a purchase agreement, a notario, an escritura pública — the registered public deed — and the transfer is done. The only extra step is a single clause written into the deed called the cláusula de admisión de extranjeros, the foreigners-admission clause. It states that the buyer is a foreigner who agrees to be treated as a Mexican national for everything related to the property.

That clause is the entire difference. No bank, no trust, no SRE permit, no annual fee. If you buy in Oaxaca City, or anywhere inland, the deed is in your name and the process is straightforward. The rule is purely geographic: the same buyer, the same money, and a different answer depending on whether the land sits within fifty kilometers of the sea. Here is the comparison in one table.

	Inside the restricted zone	Outside the restricted zone
Direct title	No — a bank holds the title for you	Yes — the deed is in your name
Mechanism	Fideicomiso bank trust, approved by the SRE	Escritura with the cláusula de admisión de extranjeros
Cost	Setup roughly $500–1,000 USD, plus an annual fee of a few hundred dollars	No trust costs; standard notary and registry fees only
Who can use it	Any foreigner, through the trust	Any foreigner, directly

The mechanics

The fideicomiso in practice

Inside the zone, the fideicomiso runs on a well-tested sequence, and your notario público — the licensed lawyer who prepares the deed and is legally responsible for the transaction's validity — handles most of it. First, the trust needs a permit from the Secretaría de Relaciones Exteriores, the Ministry of Foreign Affairs, known as the SRE. The notario prepares that application along with the bank's own. The bank runs its due diligence — identity, source of funds, the standard checks — and once approved, the notario drafts the trust contract, the contrato de fideicomiso. You sign it together with the purchase deed before the notario, and both are registered with the Public Registry of Property. That is the whole path.

Costs are modest, and honest ranges beat invented precision. Setup runs roughly $500–1,000 USD, one-time. Annual maintenance is a few hundred dollars a year — commonly in the $300–700 range depending on the bank. The official SRE fee is small and usually folded into the notary costs. Banks quote in pesos, so dollar figures move with the exchange rate, and some banks charge separately for renewal paperwork — ask for the fee schedule in writing before you choose.

The trust is created in 50-year terms, renewable in 50-year increments. Renewal is an administrative step between the bank, the notario, and the registry — paperwork, not a renegotiation of your rights. The structure has carried foreign ownership on Mexico's coasts for generations, and renewal is routine.

Straight answers

Common misconceptions, corrected

Four misunderstandings come up in nearly every conversation about the zone. Each is worth correcting calmly, because each one has sent a reasonable person down a rabbit hole at midnight.

"The bank owns my land." No. The bank is the trustee, not the owner. It holds the title so the law is satisfied, and it follows your instructions. The property is a separate estate — it is not part of the bank's assets, and the bank cannot sell it, rent it, or claim it. If you are unhappy with your bank, you can transfer the trust to another one.

"I can only lease it." No. A lease is a rental. A fideicomiso is ownership in trust. You build, rent, sell, finance, and bequeath the property exactly as an owner would. The difference from direct title is legal structure, not diminished rights.

"It expires and I lose everything." No. The 50-year term renews in 50-year increments, and renewal is ordinary paperwork between the bank, your notario, and the registry. It is not a review of your ownership, and it is not a chance for anyone to take the land. The system has carried foreign owners on Mexico's coasts for decades without a wave of expirations, because renewal is expected and routine.

"Mexicans can't buy there either." Not true. The restriction applies to foreigners. A Mexican citizen buys inside the zone exactly as they would anywhere else — direct title, no trust. That is why the same beachfront lot can be held directly by a Mexican buyer and through a trust by a foreign buyer, with both titles fully legal.

On this coast

How it affects your Oaxaca purchase

Nearly every lot we curate between Mazunte and Huatulco is inside the restricted zone. The coast runs within a few kilometers of the sea, so the 50-kilometer rule covers all of it — and the practical consequence is that the fideicomiso is the standard route here, not one option among many.

What that means for your timeline: expect the trust to add time to the closing. The SRE permit and the bank's due diligence typically take a couple of weeks, sometimes more, and they run alongside the title review and the notary's work. Plan for the range, not the best case. What it means for your paperwork: the purchase promise (promesa de compraventa), the SRE permit, the bank application, the trust contract, and the escritura, all handled through your notario's office. Funds move through the notario's account — never directly to the seller.

None of this should change how you choose a lot. The title still decides everything: a clean, registered escritura is what makes the trust possible in the first place. On every lot we list we publish the real price and tell you plainly which title it carries. We introduce buyers to licensed Mexican brokers and notarios, we never hold buyer money, and we never take commission from both sides — so the only thing we sell you is the truth about the land.

The takeaway

Bottom line

The restricted zone is not a barrier to buying coastal land in Mexico. It is a rule with a built-in path: the fideicomiso, created by law, approved by the SRE, administered by a bank you choose, and controlled by you. The costs are modest, the renewal is routine, and the rights are real.

The questions that deserve your attention are the ones that matter for any purchase anywhere: What is the title? Who owns it today? Who will hold your hand through the paperwork? Answer those honestly, and the 50-kilometer rule becomes what it always was — a footnote with paperwork attached, not a wall.