Can You Just... Move Onto a Mexican Beach? A Lawyer Ruins a Beautiful Dream

Every lawyer who works with foreigners in Mexico eventually gets a version of this question, usually after the second margarita: "What if I just... stayed? Pitched a tent, parked the RV, built a little palapa. Caught my dinner, distilled some seawater. Who's going to stop me?"

If you grew up reading My Side of the Mountain, you know this dream by name. I did — it found me as a kid in a classroom at the American School of Guadalajara, long before law school taught me how to ruin it. Sam Gribley, age twelve, walks away from New York City, hollows out a giant hemlock in the Catskills, tames a falcon, and simply lives — acorn pancakes and all. Half the people who ask me the margarita question are really asking: can I do the Sam Gribley thing, but with sand?

It is a genuinely lovely dream. Let's take it seriously — because the answer is one of the best free lessons in Mexican property law you will ever get. (And because Sam's story contains a legal detail almost everyone forgets, which we'll get to.)

The good news first: the beach belongs to everyone (including you)

Mexican beaches are not private. The law is unusually precise about this. The Ley General de Bienes Nacionales (General Law of National Assets) lists, among the nation's common-use goods, the maritime beaches themselves — defined poetically as the land the tide covers and uncovers over the year — and the 20-meter strip of dry, walkable land next to them, the famous zona federal marítimo terrestre (federal maritime-land zone, or ZOFEMAT) (Articles 7-IV, 7-V and 119-I).

And Article 8 of that law opens with a sentence lawyers rarely get to write: "All inhabitants of the Republic may use the common-use goods." All inhabitants. That's you, your tent, and your questionable sun hat. Since a 2020 amendment to that same article, access to the beach cannot be inhibited, restricted, obstructed, or conditioned — and the neighbor or beach club that fences "its" beach faces fines the law measures in thousands of days of minimum reference wage: 3,000 to 12,000 UMA, comfortably seven figures in pesos (Article 154). We wrote about that fight in a previous piece about hotels and beach access.

So yes — you can walk any beach in Mexico, swim it, picnic on it, even sleep a night under the stars on it in most places. Free, forever, no one's permission required.

Now the twist: you may use it forever, and own it never

Here is where the dream meets the fine print — and this particular fine print has been standing since the Constitution of 1917, and is in no mood to negotiate.

The Federal Civil Code and the national-assets law say the same thing in stereo: common-use goods are inalienable, imprescriptible — and for good measure, exempt from any third party's claim to possession (Civil Code Article 768; National Assets Law Article 13). Two lawyer words, one brutal meaning:

Inalienable — the nation cannot sell the beach. To anyone. Ever. There is no clever structure, no offshore vehicle, no "guy who knows a guy" that gets you a deed to sand.

Imprescriptible — you cannot squat your way into ownership. In much of the world, occupying land openly and long enough can eventually make it yours (usucapión, adverse possession). Against the Mexican beach, the clock never starts. Camp there for forty years, raise children there, name a taco stand after yourself — on day 14,600 you own exactly what you owned on day one: nothing, plus a tan.

And here is the detail everyone forgets about My Side of the Mountain: Sam wasn't squatting on public land. He was living on "the old Gribley farm" — his own great-grandfather's abandoned homestead. The book's dream stands on a family title. The Mexican beach offers you the opposite deal: 130 million co-users, and an owner who never sells. You can be a guest forever; you can be an heir never.

"Fine, I won't own it. I'll just live on it."

Also no — and this is the part that trips people up, because the line is subtle.

Maybe your plan is quieter than Sam's. Not survival — deliberation. A small hut above the tide line, a Thoreau of the sand: two years, two months, a cabin built with your own hands for twenty-eight dollars, and mornings so still you can hear your own life again. It's worth remembering what the transcendentalists don't put on the poster: Walden was written on borrowed land. Emerson owned that woodlot; Thoreau built with his friend's blessing and, when the experiment ended, walked away from a cabin that had never really been his. The most famous declaration of independence from property in the English language was underwritten by a friendly deed. That is the quiet pattern in all these books — the hemlock had a family title, the pond had a landlord — and it is exactly the piece the Mexican beach will not supply. The nation holds the deed to the sand, and the nation, unlike Emerson, does not lend it out for cabins.

Here is where the line actually runs:

Enjoying the beach is free for everyone. But the moment your enjoyment becomes exclusive — a shed, a permanent camp, an RV that has visibly stopped being a vehicle and started being an address — you've crossed from use into what both laws call a special use (aprovechamiento especial), and both are blunt about it: that requires a concession, authorization, or permit from the federal government (Civil Code Art. 768; National Assets Law Art. 8, second paragraph). It's the same instrument beach clubs and hotels must hold (and pay for) to put so much as a row of lounge chairs on the federal zone.

Build without one and Civil Code Article 769 finishes the story: whoever obstructs the common use of these goods faces penalties, pays damages — and loses whatever they built. Your artisanal driftwood cobertizo? Sam Gribley's hemlock, at least, was his to hollow. Yours is, legally speaking, a donation to the nation, pending demolition.

The survivalist audit

For completeness, let's grade the rest of the plan:

Fishing for dinner — surprisingly, mostly yes. Recreational fishing from shore requires no permit in Mexico — the fishing regulations exempt it expressly (get on a boat, and everyone aboard needs a license). Two conditions worth knowing: you must respect closed seasons, minimum sizes and catch limits, and — my favorite rule in the entire regulatory ocean — you may not cast within 250 meters of swimmers. The law protects the tourists from you, not the other way around. And don't sell your catch: commerce turns you into a regulated fisherman overnight (the Civil Code politely hands the whole subject to the fishing laws in Article 868).

Distilling seawater — knock yourself out. The ocean is not metered. (Dig a well, though, and you've just met the national water authority. Don't dig the well.)

The RV — camping a few nights is generally tolerated and often lovely; many beach towns regulate or prohibit it locally, protected turtle-nesting beaches strictly so. The RV is welcome to visit the beach. It cannot retire there.

The dog — different article, also on this blog. Short version: the dog has roughly your same rights and better manners.

So: Mexico will let you enjoy its beaches for free, forever, more generously than almost any country on earth. It will just never, under any circumstances, let you keep one. Sam Gribley had a mountain with his family's name on it; Thoreau had a friend with a woodlot. The beach, it turns out, has the best lawyer in the country — the Constitution — and its client neither sells nor lends.

Want the version of living near the beach that actually works — with a real title behind you? Start with how the fideicomiso works. That's a different conversation, and it's one we have every week. Book a consultation with Terra Firma Attorneys at Law. The first conversation is on us.

Terra Firma Attorneys at Law — Guadalajara, Mexico. Legal information, not legal advice.

Sources: Ley General de Bienes Nacionales arts. 7-IV/V, 8, 13, 119-I, 154 · Código Civil Federal arts. 767–769, 868 · CPEUM art. 27 · Reglamento de la Ley de Pesca · CONAPESCA — Guía de Pesca Deportiva

Statutory citations are unofficial translations; the Spanish originals control. This article provides legal information, not legal advice; no attorney-client relationship is created by reading it. © 2026 Terra Firma Attorneys at Law · terrafirma.law