Your front walk is not actually on your lot. The city's own definitions put the parkway at everything between the back of the curb and the edge of the right-of-way, and treat the walk inside it as a pedestrian way beside the street, so the concrete you sweep every week sits on a strip the public holds. That is why this job opens with a drawing and an application rather than a saw, and why the finished panel answers to a published detail instead of a preference.
Curtis Ballard walks the run before any figure exists. He counts panels, puts a tape across each lip, and looks hard at what has been planted in the strip behind them, because on these streets the cause is nearly always in the parkway rather than in the concrete. Lawn watered either side keeps the bedding damp right through summer, and damp bedding over creek gravel is why a panel here starts rocking a long time before it splits.
The classification is C-8, held with the California Contractors State License Board in Curtis Ballard's own name, and the men standing in the strip carry liability insurance on every job. Anything beyond the property line is right-of-way work: O.M.C. 12.64 makes it the Director of Public Works who signs the encroachment permit, and the drawing, the application and the inspection are ours. What you are left holding is a written workmanship guarantee against defects in how it was built.