I guess we are talking about a NON COMMERCIAL ACTIVITY so this are the rules here:
Off airport landing are allowed as long you have PREVIOUS CONSENT by the owner of the landing area. That permit must include the specific permision to the Police to enter that private area to verify the operation in case they need to.
That area should not be used for more that 3 take off and landings per month (thus not converting it into a regular uncertified helipad)
And it is also important that the landing area is not on a populated area, such a city or village or its proximities. Neither they can do this in the proximity of an airport.
Anyway you would probably receive the "visit" of the Guardia Civil (Police) 5 minutes after landing
asking you for your papers and owner permision to land there.
If you fullfill all the requirements, you can nicely make off airport landings here.
