Concrete Permit, Engineering and Mobilization Cost
Project costs that sit outside the slab itself: city or county permit fees and plan check, structural plans or engineering when required, and mobilization to get a crew and equipment on site. These are quoted per project, not per square foot, and permit fees are set by the issuing jurisdiction rather than by the contractor.
Typical range: $500–$6,000 per project — Southern California (2026 pricing)
What moves the price
- Jurisdiction permit fees — Each Southern California city and county publishes its own fee schedule; the same slab can permit for very different amounts across two neighboring cities.
- Whether a permit is required — Many flatwork replacements in kind are exempt, while structural slabs, ADU foundations, driveway approaches and grading usually are not.
- Plans and engineering — Structural plans, soils reports or engineered details are required on foundation and load-bearing work and are billed as a project cost.
- Plan check and revisions — Plan check rounds, corrections and resubmittals extend both the fee total and the schedule.
- Mobilization — Getting crew, forms and equipment to site is a fixed project cost, so it weighs more heavily on small jobs.
- Schedule constraints — Weekend or off-hours pours required by HOAs, property managers or commercial tenants add a scheduling premium.