The new, successful and bigger developments we see here in Mexico could be in the States or in Canada. They build here with concrete and bricks as opposed to drywall and timber there but the homes generally comparable to what you would have in the United States in terms of the electrical, plumbing, and so on.
If you are buying a home, I recommend that you talk to a reputable builder and possibly a reputable realtor who can steer you away from builders that may not be as good. We have home inspections, so if a home is being built for you, it can be inspected as it is being built, so that you shouldn’t have a problem later.
(House in a planned community, Ajijic, Mexico, pictured.)