The Costa Rica Maritime Zone (ZMT), Explained for Buyers

The Costa Rica Maritime Zone (ZMT), Explained for Buyers

The Costa Rica maritime zone is a 200-meter strip of land running the entire length of both coastlines. The first 50 meters from the mean high-tide line is the public zone, which cannot be occupied or acquired today, apart from private titles the law itself recognizes. The next 150 meters is concession land, leased from the government, not sold. Understanding this distinction before you sign anything is the single most important step in coastal due diligence.

This guide explains exactly how the ZMT works, what rights a concession actually gives you, where the risks concentrate, and what to verify before you pay a deposit on any beachfront or near-beach property in Costa Rica.

This guide is for general information only and is not legal advice. Consult a licensed Costa Rican attorney before making any real estate decision.

What the Law Actually Says

Costa Rica's maritime zone law governs a continuous 200-meter band measured inland from the mean high-tide line on every ocean-facing coast. The legal framework divides this band into two distinct zones with very different rules.

• The Public Zone (first 50 meters): This strip is inalienable public domain. No new title can be obtained over it and no one may occupy it without legal authorization (Ley 6043, arts. 7 and 20). The only exception is private land that was already lawfully registered, which the law itself carves out (arts. 6 and 25), so any claimed title here needs an attorney's review. Construction within it is generally prohibited without specific authorization.
• The Restricted Zone (next 150 meters): This land cannot be purchased in fee-simple either. Instead, the state grants concessions, which are time-limited leases administered jointly by the relevant municipality and the Instituto Costarricense de Turismo (ICT). You occupy and use the land under a concession contract, not a property deed.

It is worth being precise: when a seller or agent says "beachfront titled property," that phrase deserves immediate scrutiny. Verify whether the parcel actually begins outside the 200-meter ZMT boundary, or whether part or all of it sits within the restricted zone. The Registro Nacional is the authoritative public registry where you can confirm what, if anything, is titled on a given parcel.

Concessions: What They Are and What They Are Not

A concession is a contractual right to use a specific area of the restricted zone for a defined purpose, such as a hotel, residence, or tourism operation. The municipality where the land sits issues the concession in coordination with ICT. The concession has a fixed term, renewal conditions, and an annual canon (fee) paid to the municipality.

A concession is not ownership. This has several practical consequences that matter directly to North American buyers.

• Financing: Most Costa Rican banks and virtually all U.S. and Canadian lenders will not use a concession as collateral for a mortgage. Cash purchases or private financing are common in the ZMT for this reason.
• Transferability: Concessions can be transferred, but the transfer requires municipal and ICT approval. A transfer is not as straightforward as recording a deed change at the Registro Nacional.
• Foreign ownership limit: Ley 6043 (art. 47) bars concessions to foreigners with less than five years of residence in Costa Rica, to companies domiciled abroad or formed in Costa Rica by foreigners, and to entities more than 50% foreign-owned. Concession-holding entities may not transfer shares to foreigners, and transfers that break this rule are void. This is a hard constraint, not a technicality. Structures designed to obscure beneficial foreign ownership have faced legal challenges in Costa Rica.
• Renewal risk: A concession can be revoked if the holder violates the terms, fails to develop the land as specified in the concession plan, or fails to pay the annual canon. Unlike fee-simple title, a concession has no presumption of perpetual tenure.

If you are looking at a beachfront villa in a market like Tamarindo, where development is dense and ZMT boundaries run directly through established neighborhoods, it pays to know exactly which parcels are titled and which are concession before you commit. You can check a property in Tamarindo using Folio's records tool to start pulling the registry picture.

How the ZMT Boundary Is Measured, and Why It Is Contested

The 200-meter measurement begins at the mean high-tide line. In practice, this line is not always easy to locate with precision. Tidal variation, erosion, vegetation, and historical survey inconsistencies all create situations where the exact boundary is disputed. A cadastral survey (plano catastrado) registered at the Registro Nacional should reflect the correct boundary, but older surveys may not accurately account for tidal changes or may have been drawn before rigorous ZMT mapping was conducted.

The plano catastrado carries a unique number that must link directly to the folio real, the property's registration number in the registry. A mismatch between the survey plan and the registered folio is a red flag that should stop any transaction until resolved.

Coastal markets like Manuel Antonio have seen significant development pressure, and some parcels have complex histories involving boundary disputes between titled land and the ZMT. If you are considering a purchase there, check a property in Manuel Antonio early to surface any annotations or liens in the registry before spending time or money on further due diligence.

What a Certified Registry Report Reveals

The certificacion literal, or certified literal report, is the foundational document for any Costa Rica property transaction. You pull it from the Registro Nacional. It shows the registered owner, a description of the boundaries, any mortgages or liens, annotations (which often flag legal disputes or pending processes), and the cadastral plan number.

For ZMT concession land, the record is different. Ley 6043 (art. 30) requires concessions, extensions, transfers and liens to be recorded in a General Registry of Concessions kept by the ICT, which the law provides is to form part of the Registro Nacional. A clean search of the titled-property record on a beachfront parcel therefore tells you nothing about the concession, and the concession can also have unresolved issues at the municipal level. Both searches are necessary.

Buyers should pull a certified registry report before paying any deposit. This is not optional due diligence. It is the minimum starting point. You can run a free Folio check to get an initial picture of what the registry shows on any parcel, before you engage attorneys or begin formal negotiations.

The Role of the Municipality and ICT

The municipality holds day-to-day administrative authority over concessions in its jurisdiction. ICT, the Instituto Costarricense de Turismo, provides technical input and approvals, particularly for tourism-use concessions. The ICT also maintains information on coastal management plans (planes reguladores costeros), which govern what can be built and how land in the ZMT can be used.

Not every coastal municipality has an approved coastal management plan. Where a plan does not exist, concessions may not be legally granted at all in certain areas. This is a material fact for buyers: a concession issued in an area without a valid plan, or issued outside the legal framework, can be challenged or revoked.

Checking the status of the coastal management plan for the specific municipality where a property sits is a step that belongs in every ZMT due diligence checklist. Your attorney should confirm this directly with the relevant municipality and ICT.

Environmental Permits and SETENA

Any development in or near the ZMT that meets certain thresholds requires environmental impact assessment through SETENA, Costa Rica's environmental permitting authority. Buying a property with existing construction that never received required SETENA permits creates liability for the new owner. Demolition orders for unpermitted coastal construction exist in Costa Rica and have been enforced.

A full due-diligence review for a ZMT or near-ZMT property includes verifying SETENA permit status for any structures on the land. This is separate from and in addition to municipal building permits.

The Foreign Ownership Rule in Practice

The restriction on foreign majority ownership of ZMT concessions is one of the most misunderstood aspects of Costa Rica coastal real estate. Under Ley 6043 (art. 47), an individual foreigner can hold a concession only after at least five years of residence in Costa Rica. A company that holds one may not be more than 50% foreign-owned, may not have been formed in Costa Rica by foreigners, and its shareholders may not transfer shares to foreigners.

Over the years, buyers and sellers have used various structures to work around this rule. Some of those structures have created serious legal problems. When you are reviewing a concession property where the seller is using a corporate structure, understanding exactly who holds what percentage of the company, and whether those percentages comply with the ZMT law, is not optional. This is a point where independent legal advice is non-negotiable. Do not rely on the seller's attorney for this analysis.

In markets like Puerto Viejo on the Caribbean coast, where land tenure is historically complex and ZMT issues layer on top of indigenous territory and other land-use considerations, the corporate structure question deserves extra scrutiny. You can check a property in Puerto Viejo to begin your records review on any specific parcel.

Due Diligence Timeline and Costs

A standard due-diligence period in Costa Rica runs approximately 30 days from the signing of a purchase option or letter of intent. The deposit paid at that stage is typically refundable if material problems surface during due diligence. "Material problems" should be defined in the contract, and a ZMT boundary conflict, an invalid concession, missing SETENA permits, or an unregistered lien each qualify.

A full maritime-zone legal investigation by a qualified Costa Rican law firm costs roughly $800 to $1,500. That figure covers the legal analysis of the concession status, municipal plan review, ICT filings, corporate structure review, and related title work. Folio's records-level review costs a fraction of that and is designed to be completed at the beginning of the process, before you engage full legal due diligence, so you know whether a parcel warrants that investment.

For context on taxes and annual obligations: property tax (impuesto sobre bienes inmuebles) is a municipal tax, valued, billed and collected by the municipality where the land sits (Ley 7509, arts. 1 and 3). Concession land is treated differently: Ley 6043 provides that the annual canon paid to the municipality replaces the property tax (art. 48).

Titled Land Near the ZMT Still Requires Verification

Titled, fee-simple land outside the ZMT boundary is a fundamentally different and generally safer position for a foreign buyer. Foreigners can own titled Costa Rican property on exactly the same terms as Costa Rican citizens. There is no ownership percentage restriction for titled land.

However, even titled land near the coast can have issues. A parcel's cadastral survey may place it outside the 200-meter line, but a later or more accurate survey may tell a different story. Annotations in the Registro Nacional sometimes flag exactly these kinds of boundary recalculations. A certified literal from the Registro Nacional will show any such annotations.

In Santa Teresa, one of Costa Rica's most active beach real estate markets, the combination of rapidly rising values and complex coastal topography makes precise ZMT verification especially important. Before any offer in that market, check a property in Santa Teresa to confirm what the registry reflects on boundaries, ownership, and encumbrances.

Checklist: ZMT Due Diligence for Buyers

• Pull a certified literal from the Registro Nacional before paying any deposit
• Confirm the plano catastrado number matches the folio real
• Verify whether the parcel is titled land or ZMT concession land
• If concession: review the concession contract, term, annual canon, and renewal conditions
• If concession: confirm the coastal management plan (plan regulador costero) exists and is approved for the municipality
• Check ICT records on the concession and any pending issues
• Verify SETENA environmental permits for any existing structures
• If a company holds the concession: review shareholder structure for compliance with the foreign ownership rules in Ley 6043, art. 47
• Retain your own independent attorney, not the seller's
• Check court records at the Poder Judicial for any litigation involving the property or seller

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Frequently Asked Questions

Can a US or Canadian citizen own beachfront property in Costa Rica?

Yes, with an important distinction. Foreigners can own titled (fee-simple) Costa Rican land on the same terms as citizens. However, beachfront land within the 200-meter ZMT is not titled land. It is either public zone (first 50 meters, closed to new private ownership) or concession land (next 150 meters). A foreigner can hold a concession personally only after at least five years of residence in Costa Rica, and a company holding one may not be more than 50% foreign-owned (Ley 6043, art. 47). Titled land outside the ZMT boundary has no such restriction.

How do I know if a specific property is inside the maritime zone?

The starting point is the plano catastrado registered at the Registro Nacional, which should show the parcel boundaries and their relationship to the ZMT line. However, older surveys may be inaccurate. A licensed topographer or your attorney can commission a new cadastral survey to confirm the boundary. Pulling the certified literal first will show you what is currently registered and flag any annotations about boundary disputes.

What happens if a concession expires or is revoked?

If a concession expires and is not renewed, or if it is revoked for cause, the right to occupy and use the land ends. Any structures on the land revert to the state. This is a real risk and not a theoretical one. Buyers should verify the remaining term of any concession, the conditions for renewal, and the history of canon payments before committing to a concession property. Confirm the renewal process and associated conditions with a licensed Costa Rican attorney.

Is a deposit refundable if ZMT problems are discovered during due diligence?

It depends on what the purchase option contract says. Standard practice in Costa Rica involves a due-diligence period of approximately 30 days with a refundable deposit if material problems surface. But the contract must explicitly state what constitutes a material problem and under what conditions the deposit is returned. Never sign a purchase option without having your own independent attorney review it first. A ZMT boundary conflict or invalid concession should qualify as a basis for refund if the contract is drafted correctly.

Does Folio replace a real estate attorney for ZMT due diligence?

No. Folio is a records and due-diligence research tool. It pulls and interprets public registry data, flags discrepancies, and gives buyers an early, clear picture of what the records show. It does not provide legal advice, does not review concession contracts, and does not replace the judgment of a licensed Costa Rican attorney who can analyze the full legal picture, advise on corporate structure, and represent your interests in a transaction. Use Folio to know what questions to ask and which properties are worth pursuing, then engage qualified legal counsel for the transaction itself.

This guide is general information, not legal advice. Confirm material facts with a licensed Costa Rican attorney, notary or surveyor before any transaction.