Mexican perro's are cool! Just look how that one is doing his part to hold the truck in place. 4x4 on the left for a wheel chock, dog on the right...
My dad & stepmom live part-time in San Miguel de Allende. I've been down to visit, and lived a month in Mexico City when I was 13. I continue to be amazed by the "can do" attitude of the Mexican people.
In SMdeA, it's high desert, so much of the construction is masonry & steel. (I think this is the case in much of Mexico, but I cite only from my personal experiences.)
Around the corner from their house sat a flat-bed trailer from an 18-wheeler, with big structural steel members - perhaps 8x8 or maybe larger I-beams - easily 20-plus feet in length. There were a number of beams on the ground adjacent to the trailer. I asked my dad if they were coming or going. He said it was a delivery - "por la mano." (By hand). I thought he was kidding me. He said he watched in amazement as a group of laborers toiled to unload each of the beams that were on the ground. I wouldn't be surprised if each beam weighed at least 1,000 pounds.
His former house had a "native" connection to the city sewer - was that way when he bought it. That is to say the sewer line exited the property and went "somewhere" down the street. The gov't is cracking down on these unapproved methods of sewage disposal, and the fines are steep and connection fees very high - even if you're not the owner that built the house. In consultation with some others, it was decided to take the house off the "city" system and install a couple of tanks to deal with the sewage output of the house, one for gray water, the other for black. I don't know what kind of changes had to be made to the house to get the toilets to go to the black water tank directly.
The house sits on a small lot, no room for the tanks anywhere but under the front driveway area that leads to the garage area under the house. The property is enclosed by a wall with a drive-thru gate at the front - no way to get any sort of "normal" construction equipment through - headroom thru the door is about 7 feet.
The driveway is constructed of concrete pavers. Those were pulled up, and a HOLE, about 15' x 15' x 15' was dug. Concrete walls and floors were installed, along with two tanks - a very large (I think) 3,000 gal grey water unit and a smaller 1,000 gal black water unit. There's a pump attached to the grey water and with some treatment, it's used for irrigation on the property. The black water is pumped out by a "honey wagon" periodically. After the walls, tank and associated plumbing was in, concrete beams were formed across the ceiling, and a concrete roof was poured, after which the pavers were reinstalled. The only evidence of the "$hit bunker" is a 2' square iron frame door in the middle of the drive.
All done - por la mano...