By doing so, you can avoid government fines or penalties for noncompliance with the requirements of the law.  And even if the property is not in the federal maritime zone but adjacent to it, it is convenient to obtain the concession in order to ensure undisturbed occupation and avoid jeopardizing the primary value of the property.

Obtaining federal zone concessions and regularizing is relatively low cost, including expenses, government fees, professional fees, etc. 

The federal zone can be an extension of the property for a very low cost; it would be, however, not considered as private property, but does give renewable temporary use and enjoyment rights.

Consequently, it is worth it to make a thorough title search of beachfront property and survey it according to the government federal zone official marks/standards and determine whether or not the property is in or out of the federal zone. 

Nothing should be assumed. It is in your best interest to be certain if a property is in the federal zone or not.  Remember that you can only sell a private property and federal zone land is not subject to sale or purchase, but only to assignment of concession rights. Keep in mind that the Federal Maritime Zone line may modify over the years.