Sorry to post this a second time but I thought it would be useful:
There has been a growing backlash from the Spanish and fellow Europeans regarding 'landgrab' or LRAU over the past decade. It started out as a purely Valencia based law but has since been replicated in other regions including Alicante, Murcia and Andalucia. It was originally created to overcome issues with greedy land owners who held large swathes of land up for ransom to the local town halls which meant they were unable to house the local population economically. However since then the application of this law has been comandeered by developers and cash strapped Town halls.
There is very little that can be done to provide a safeguard against LRAU. In theory 'Rustica' land is free from Urbanisations but the town halls have the power to redesignate land for urbanisation. You are generally safer if you buy property of newly developed urbanisations, but still you must do your homework and retain seraches and local legal advice before you commit. Those worst affected are the people who bought property with plots of land years ago and have since been affected - it can mean they lose up to 70% of their land and also have to pay for the utility and communications installation of new sites on what was previously their land - ouch!
Its is not all bad news - there is an organisation making waves at the European parliament which is opposing the current version of LRAU. Take a look at the section 'Living & Working' on the links page of
www.property4spain.com for the LRAU site