I can assure you construction on both Mexican coasts is going completely unsupervised.
That hurts! This is a beautiful country. They need tourism, retirees, …who doesn’t, but keep the speculators out, and develop eco-tourism and a coherent strategy that is in line with the culture. Preserve and build on what you’ve got, don’t import failure. Mass market is short-termism and destroys, leading to problems further down the line.