The City of Oxnard is the local government here, so local rules for your project come from the city, while the license your contractor needs comes from the state. If your job needs a permit, I'll tell you at the estimate, and we take care of the application and the inspections with the office that issues it, so the permit becomes part of the start date we plan with you. Before you hire anyone, check their license with the state licensing board. We're licensed and fully insured, and we're glad to have you look us up.
The price moves mostly with the size and thickness of the slab, how much old concrete has to come out, how much base work the ground needs and the finish you pick, since stamped or colored work costs more than a plain broom finish. The schedule turns on the permit if there is one, the weather on pour day and curing, the stretch where concrete slowly hardens and gains strength, which is why you're off a new driveway longer than a new patio. Your written estimate lays all of it out, and it reads the same whether you're in Oxnard or up the road in Ventura, because the same crew does the work.