Some still hold the mistaken belief that it is not possible to own property in Mexico, or at least that ownership must be through a Mexican nominee. This was once true, but it is no longer so.
After the Revolution, in 1917, the new government broke up the large land tracts held by the wealthy and powerful. The land was re-assigned in smaller parcels to local 'ejidos' which are organizations of the indiginous population. (In North America, a close equivalent to 'ejido' would be so-called 'Indian Reserve'.) It was possible for a foreigner to acquire ejido land but only if the title was held by a Mexican nominee, a very uncertain way to hold property.
About the time of the NAFTA agreement, the Mexican government adopted the philosophy that foreign ownership would be good for Mexico for economic reasons. They looked about for a way that this might be accomplished in law, which was a difficult thing to do as the proscription on foreign ownership was enshrined in the constitution and would be impossible to change without great political upheaval.
A process was therefore enacted whereby certain tracts of ejido land were 'regularized', meaning that they could be held up for sale to foreigners. The title to that land was then given in trust to a chartered bank (there are seven in Mexico) and the foreign purchaser would enter into an agreement with the bank whereby he would become the beneficiary of that trust. The trust agreements are set for fifty years whence they are renewable.
This is called 'fideicomiso' and it is the Mexican equivalent of clear title land. All foreigners holding land in the Puerto Vallarta area from the large chain hotels to the smallest vacation property own their land under the fideicomiso system.
All land represented by Pacific Mexico Real Estate is regularized land and can be safely bought by foreigners.