A walk is the one slab a person uses on foot every day, so its fault is not a crack but a lip, a pitch or a step in the wrong place. On a flat lot a walk is a strip of concrete. On a Mission Viejo pad the house sits above or below the street, so the walk has to climb, and a slab tilted up a slope is a slide in the first rain. It is built instead as a walk to a fall of 1 in 20, a ramp with landings up to 1 in 12, or steps beyond that, and the grade shot at the visit decides which.
Saddleback Mission Viejo Concrete has built walks in Mission Viejo since 2018, and Trevor Lindqvist shoots the grade on every estimate himself. Of his 17 years on flatwork crews across south Orange County, most were spent on tract pads like these, where the front walk was poured with the house in one season and has been lifting at the cut and fill seam ever since. He is on the forms at every pour, so the fall you agreed to at the visit is the fall the walk is finished at.
Every walk is 4 inches of 3,500 psi concrete over compacted base at 36 inches or wider, with a cross fall to shed water and joints at the width, built to the California Residential Code under a CSLB C-8 concrete license with liability insurance on every job. A panel behind the curb is in the City's right-of-way, and it is done on an encroachment permit from the City of Mission Viejo. It carries a written workmanship guarantee against defects in how it was built.