7,25 Acri DI Terra Sulla Spiaggia Caraibica — Sian Ka'an, Tulum

Beachfront Land for Sale in Sian Ka’an Biosphere Reserve — Tulum, Mexico

Some places in the Caribbean still feel the way the coast used to feel — quiet, natural, and completely unhurried. This is one of them.
Located at Kilometer 43 on the road between Tulum and Punta Allen, this 7.25-acre property (29,347 m²) sits inside the Sian Ka’an Biosphere Reserve, a UNESCO-protected stretch of coastline in the Mexican Caribbean and one of the largest protected natural areas in Mexico. Development within it is strictly controlled by federal law.
The land has water on both sides. To the south, the Caribbean Sea, with direct beach access and open water views. To the north, Laguna Xamach — a calm, clear lagoon that winds through the reserve’s mangroves and waterways. Between them, the land is natural: palms, coastal plants, and white sand that has been left largely as it is.
The property is accessible by car from the Tulum–Punta Allen coastal road, or by boat through the lagoon or along the shore. The luxury hotel Chablé Sian Ka’an sits directly to the north, and Sol Caribe to the south — useful reference points for the quality and character of what this location attracts.
Because new development in Sian Ka’an is tightly restricted, land here does not become more available over time. A property of this size, with Caribbean beachfront, lagoon access, and clear legal title inside the reserve, is genuinely hard to come by.
The lot is well suited for an eco-resort, boutique hotel, wellness retreat, or a private beachfront estate held as a long-term asset. For buyers who need more space, the adjacent lot of 34,429 m² is available separately or as a combined acquisition — bringing the total to approximately 63,777 m² (15.76 acres) of contiguous dual-waterfront land along one of the most protected coastlines in Mexico.