Concrete Slab Permit Requirements in St. Johns County, FL
St. Johns County Building Services issues all residential permits (building, electrical, mechanical, plumbing, roof, pool) for unincorporated county land outside the City of St. Augustine and City of St. Augustine Beach. Codes in force: Florida Building Code 8th Edition (2023) residential and building, NEC 2020, ASCE 7-22 wind design. County is in the wind-borne debris region (not HVHZ, which is only Miami-Dade and Broward). Impact-rated windows and doors or approved storm shutters required for residential openings. Septic permits handled by Florida Department of Health in St. Johns County at (904) 506-6081. Driveways on county roads go through St. Johns County Road and Bridge; driveways on US-1 or I-95 require FDOT approval. Historic district overlays may apply in some areas. Licensed FL CILB contractors required for most trades; owner-builder allowed under F.S. 489.103(7) for homesteaded primary residence with personal supervision affidavit.
By Joey, Founder · Last verified April 20, 2026 · How we research →
When you don’t need a Concrete Slab permit in St. Johns County
A small concrete slab (under 200 sq ft, no structure on top) such as a small pad for trash bins or an AC condenser does not require a permit per FBCR 8th Edition R105.2.
When you need a Concrete Slab permit in St. Johns County
A concrete slab over 200 sq ft (or any slab intended as a foundation for a future structure) requires a building permit. Termite protection per FBCR 8th Edition R318 and reinforcement details per R403 must be shown. Florida does not have a frost-depth requirement but monolithic turn-down footings are typical.
Concrete Slab Permit Costs: St. Johns County vs. Nearby
St. Johns County's fees are right in line with the Florida average, $125 – $300 versus $108 – $466 statewide.
| City | Estimated Fee |
|---|---|
| St. Johns County | $125 – $300 |
| Jacksonville | $75 – $600 |
| Miami | $75 – $600 |
| Tampa | $75 – $600 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all St. Johns County permit costs →
Zoning & HOA Considerations
Concrete slabs contribute to impervious surface coverage. Austin, Portland, Seattle, and many coastal cities cap impervious cover at 40-65% of lot area. Sidewalks and curb cuts in the public right-of-way always require a separate Public Works encroachment permit.
If you live in an HOA community: hOAs may restrict new concrete installations, especially front-yard additions visible from the street. Changes to driveway width or walkway placement typically need ARC approval.
Estimated Project Timeline in St. Johns County
Here's a typical timeline for a concrete slab project in St. Johns County, FL:
Timeline is based on St. Johns County's typical about 2 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Estimated permit fees for Concrete Slab projects in St. Johns County, FL range from $125 – $300. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Concrete Slab projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in St. Johns County can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Concrete Slab permits in St. Johns County is about 2 weeks. More complex projects may take longer if plan review is required.
If you live in an HOA community, you may need architectural review approval in addition to a building permit. HOA rules and city building codes are separate, you may need to satisfy both. Review your CC&Rs and submit to your HOA's architectural review committee before starting work.
Learn More About Concrete Slab Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Concrete Slab Guide →