A "concession" is defined as the right to use and enjoy a specific property located on the maritime zone for a pre-determined period of time. These concessions or leases are granted for five to twenty year terms, after that time period, it is the responsibility of the property owner to get the concession re-granted. A yearly fee must be paid to the municipality for the duration of the lease to keep it current. Failure to pay may terminate the lease and result in the loss of any buildings on it.

The Maritime Zone is a  200 meter zone is divided into two areas:

1. Public Area: The first 50 meters measured horizontally from the high tide line. This zone is not available for ownership of any kind. Only constructions approved by governmental entities could be done there. Any individual wishing to utilize this area for enjoyment has the right to do so. However, no one may trespass private property or the restricted zone in order to reach the public zone

2. Restricted/Concession Area: The next 150 meters. This area is available for Concessions to be granted. An owner of a concession may build on that concession, subdivide the concession and perform other acts to the property. However, appropriate permits from the local municipality must be obtained.

An investment in property regulated by the Maritime Zoning Law requires extra caution and thorough investigation. Municipality Records must be examinated to verify the seller's ownership status, general tax and leasing records. Keep in mind that you are no purchasing the property, you are leasing it. Even if you get a concession, there are no guarantees that the concessions will be renewed or that the price of the concession or the yearly canon will be within reason.