Costa Rica Maritime Zone (ZMT) Guide

Law 6043, the Ley sobre la Zona Marítimo Terrestre (ZMT Law), governs all land within 200 meters of the high-tide line along Costa Rica's entire coastline. It is one of the most misunderstood and most consequential laws for any foreign buyer looking at beachfront or near-beach property. Unlike inland property where fee simple title (plena propiedad) allows full private ownership, most beachfront land in Costa Rica cannot be privately owned by anyone — it can only be held through a government-issued concession lease.

Many buyers discover this only after they have fallen in love with a property and are well along in negotiations. A listing that says "beachfront title" can be legally inaccurate or misleading — or can refer to a concession that is presented as title. The distinction matters enormously: a concession is a government-granted lease, not ownership. Understanding what you are actually buying — and what rights a concession does and does not grant you — is the essential first step for any coastal property consideration in Costa Rica.

The ZMT Law applies to the Pacific Coast, Caribbean Coast, and all islands within Costa Rica's territorial waters. There are no exceptions based on how long a structure has been on the land or who previously occupied it. The law creates a clear two-zone structure within the 200-meter band, with fundamentally different rules for each zone.

The 50-Meter Public Zone

The first 50 meters from the high-tide line is inalienable public domain. "Inalienable" means it cannot be transferred, privatized, or encumbered — not by anyone, for any reason. It belongs to the Costa Rican state and by extension to all citizens and visitors. No one can own it, lease it, or build permanent structures on it. This is an absolute prohibition that has been consistently enforced by Costa Rican courts.

Within the 50-meter public zone, temporary and removable structures may be permitted in specific circumstances — beach access paths, public facilities, lifeguard stations — but no permanent construction for private use is legally possible. If a structure exists in the 50-meter zone, its legal status is precarious regardless of how long it has been there or who built it.

The 150-Meter Restricted Zone

From 50 to 200 meters from the high-tide line is the restricted zone. This is where the concession system operates. The state retains ownership of the land, but individuals or corporations can be granted a concession — a lease agreement — that gives them the exclusive right to use and build on a specific parcel for a defined period, typically 20 years, subject to renewal. The concession holder can build structures on the land, can rent or sell those structures, and in many respects operates as though they own the land — but they do not. The state can, under specific circumstances, reclaim the land at the end of a concession period or for cause.

A crucial practical consequence: concession land generally cannot be used as collateral for traditional bank financing. Most Costa Rican banks will not provide mortgages on concession property because the lender cannot foreclose on land the borrower doesn't own. This affects how buyers finance concession purchases — typically through direct purchase, seller financing, or foreign lender arrangements.

The ZMT Law includes specific requirements governing who is eligible to hold a concession in the restricted zone. These requirements are not widely understood by foreign buyers and have caused significant complications for investors who set up the wrong legal structure before purchasing.

Costa Rican citizens can hold 100% of a concession without restriction. Foreign nationals who hold legal residency in Costa Rica and who have held that residency for at least 5 years can also hold 100% of a concession. Foreign nationals who do not yet have 5 years of residency cannot hold more than 49% of a concession — the majority interest (51% or more) must be held by a qualifying party (Costa Rican citizen or a qualifying resident).

In practice, many investors structure their ZMT concession holdings through a Costa Rican corporation (Sociedad Anónima) whose majority shareholders are qualifying parties. This structure is common and legally effective — but the underlying residency and nationality requirements apply to the shareholders, not just the company name. A corporation where all shareholders are foreign nationals without qualifying residency does not comply with the ZMT Law requirements. These requirements are enforced at the municipal level and violations can result in concession cancellation without compensation.

The Papagayo Peninsula in Guanacaste operates under a special concession framework administered directly by ICT — the Instituto Costarricense de Turismo — rather than by the local municipality as is standard for most ZMT concessions in Costa Rica. This framework was established in the early 1990s specifically to promote the development of high-quality tourism infrastructure on the Pacific Coast and has been the foundation for the resort and residential development that has made the Papagayo Gulf one of the most sought-after development corridors in Central America.

ICT Papagayo concessions are specifically designated for tourism-related development — hotels, tourism residences, amenity facilities, and supporting infrastructure that contributes to a coherent tourism destination. The concessions are governed by master plans approved by ICT, which define the development parameters, density, setbacks, and use requirements for each parcel. Individual development projects within the ICT zone must conform to the master plan for their specific parcel as well as all other applicable permits (CFIA, SETENA, municipality).

PDC has extensive experience with development projects throughout the Papagayo ICT zone and understands the specific requirements, processes, and stakeholders involved in ICT concession projects. The ICT framework, while more complex than standard inland development, provides a well-defined path for tourism development that has produced some of the highest-quality resort and residential projects in the country.

Concession ownership is a legitimate and commercially viable form of property right in Costa Rica — thousands of successful developments operate under concession throughout the country. But it carries specific risks that buyers must understand and plan for. These are manageable risks with proper legal structure, not disqualifying ones — but they are real differences from fee simple ownership that affect how you plan, finance, and structure a concession investment.

The concession must be maintained. Concession fees must be paid to the municipality (or ICT, in the Papagayo zone) on an ongoing basis. The concession holder must actively use the land for its designated purpose. Failure to pay fees or abandonment of the development can result in concession cancellation. An investor who purchases a concession and then leaves the property vacant for years faces potential loss of the concession without compensation for improvements.

Renewal is not automatic. Concessions are typically granted for 20-year terms with renewal rights — but renewal is not guaranteed. While it is standard practice to renew well-structured, compliant concessions that have been properly maintained, there is no absolute legal right to renewal that mirrors fee simple title in perpetuity. A properly structured, actively used, and fee-compliant concession has strong renewal prospects — but this is a real difference from title ownership.

Transfer requires approval. Selling a concession property requires municipal (or ICT) approval of the transfer to the new holder. The new holder must also meet the residency/citizenship requirements described above. This adds process to any sale and can affect transaction timelines.

Before purchasing any coastal or near-coastal property in Costa Rica, the ZMT status must be verified through multiple channels — the Registro Nacional alone is not sufficient. ZMT boundaries can be disputed and the physical high-tide line changes over time due to natural coastal dynamics, so a current survey is essential for any property within what might be the 200-meter band.

The Registro Nacional will show ZMT annotations on any property with registered coastal zone restrictions. A full title study will flag these. However, the absence of an annotation does not guarantee that a property is outside the ZMT — the registry may not reflect current physical conditions if the high-tide line has shifted since the last survey.

The local municipality's coastal zone (zona marítima) department maintains cadastral maps showing the officially mapped ZMT boundary. Consulting this office and obtaining official confirmation of a property's position relative to the ZMT is an important step. Commissioning a fresh topographic survey that physically measures and marks the high-tide line is the definitive verification method — particularly for properties that may be close to the 50-meter or 200-meter boundaries.

Construction within the ZMT requires a more complex permitting stack than inland development. In addition to the standard CFIA architectural permit process, coastal construction requires specific municipal approvals that confirm the proposed development complies with the concession terms and the ZMT Law setback requirements within the restricted zone. The municipality must authorize construction as the land manager for ZMT concessions (or ICT, in the Papagayo zone).

SETENA environmental review is always required for construction within the coastal zone. The proximity to the ocean, beach, and potentially sensitive coastal ecosystems means that virtually all coastal projects are subject to SETENA review — and most will require at minimum a D2 instrument. Projects in or near the 50-meter public zone, estuaries, mangroves, or other coastal ecosystems will face more intensive SETENA scrutiny and may require D3 full environmental impact assessments.

Setback requirements within the restricted zone are stricter than inland development — the ZMT Law and municipal regulations impose minimum distances from the edge of the public zone (the 50-meter line) that leave less buildable area than the full 150-meter restricted zone width would suggest. These setbacks must be mapped against the planned development before any design work proceeds. Projects in the Papagayo ICT zone must additionally comply with ICT master plan setbacks and development parameters for their specific parcel.