The sidewalks were destroyed and the walk way concrete was off set.

Normally they would mix the concrete by hand. 

Quote from @Paul Gupta: Hi, in California, For jobs requiring a license, there was CSLB (contractor state licensing board) which would give either a General Contractor license, or specialty licenses by trade (~60 specialties such as concrete, welding tile, ) https://www.cslb.ca.gov/about_us/library/licensing_classific...My Q: does Maryland and DC area have similar requirements? 

The rental had ratty furniture, a record player prominently featured in the marketing but it had no speakers, missing basics items in the kitchen, lots of drunks in the concrete hallways that reverberated right into the bedroom at 2am, a strong odor of urine outside, and more.We have super hosts in this forum that have hundreds of 5-star reviews and are masters of the craft, but I look at their rentals and see they don't have any artwork on the walls, decor is basic, they do nothing to make the guest feel welcome, etc. 

Nothing worse than walking up the front of the house and having a broken up concrete walkway.

The underlayment should be durock or other concrete board.

A concrete example.

With the advancement of concrete in the last 100 years or so, you don't really see wooden piers.

Concrete pad and cinder block walls.

And you still have to demo the concrete slab (I don't think you have basements in TX?)