The Junta de Andalucia has published a 10 year plan to regulate the construction along the Andalucian seafront. The plan is designed to regulate and control the construction of seafront homes, with a view towards building ecologically sustainable tourism propelled towns up and down Andalucia.
The plan, strangely enough, regulates from the protected area of the Ley de Costas (which is currently being changed, so this new plan is out of date before it ever starts) to 500m inland. I suppose that past the 500m mark you can do as you wish.

The plan will permit the construction of 90,000 homes along the beach in 160 different sectors, protecting other bits. Almería province is permitted to build 40,000 homes along its seafront.
Much more blathering, read it here because I sure can’t be bothered to.
I’m not sure if this plan is 20 years too late, or 20 years too soon……
What is the betting that they will still be declared illegal
they cant sell what they have, there are so many properties stood empty already, why build more, it is ludicrous