Concrete Permits in St. Tammany Parish

What Concrete Work Requires a Permit in St. Tammany Parish?

Any concrete flatwork that changes drainage patterns, adds impervious surface area, or connects to a structure typically requires a permit in St. Tammany Parish. Driveways, parking pads, detached garage slabs, carport foundations, and commercial sidewalks all fall into the category of work the parish wants to review before a pour. Small isolated walkways and minor patch repairs generally do not trigger a full permit, but the threshold depends on total square footage and location on the lot.

The parish evaluates two things before issuing approval: whether the new concrete changes how stormwater moves across the property, and whether the slab sits within a required setback from the property line or a drainage servitude. A 600 sq ft driveway replacement that stays on the existing footprint moves through review faster than a new 1,200 sq ft parking pad that covers bare ground, because the new pad adds impervious area and redirects runoff.

Property owners should confirm their specific permit requirements with the St. Tammany Parish Department of Development in Covington. The parish website lists current application procedures, and staff at the permit counter can confirm whether a project falls below the review threshold. Do not assume a small slab is exempt without checking. Pouring without a required permit can result in a stop-work order, a fine, and a requirement to remove completed work.

How Does St. Tammany Parish Soil Affect the Permit and the Pour?

St. Tammany Parish sits on sandy pine-flat soil with a deeper water table and better natural drainage than the south shore clay found in Jefferson or Orleans parishes. North shore soil profiles typically show 12 to 36 inches of sandy loam over a sandy subgrade, with a water table that sits 4 to 8 feet below grade in most areas outside of creek corridors and low-lying parcels near Lake Pontchartrain.

Sandy subgrade drains quickly, which reduces the hydrostatic pressure problems that plague south shore slabs. Settlement from organic compression is rare on the north shore. The failure mode inverts: water moves through the subgrade so efficiently that it erodes material from under slab edges, especially along driveways that collect roof runoff or border unpaved ground. A slab edge that loses 2 to 3 inches of supporting base material will crack along the unsupported span within one to two seasonal cycles.

The permit process accounts for drainage because St. Tammany Parish enforces stormwater management standards that require new impervious surfaces to handle runoff without directing water onto neighboring parcels. A concrete contractor working on the north shore designs the base and the site grading to keep water moving away from slab edges rather than pooling against them, and the parish inspector checks that the finished grade matches the approved plan.

What Do St. Tammany Parish Inspectors Check on a Concrete Project?

Parish inspectors verify subgrade preparation, formwork placement, reinforcement, and finished grade at specific stages before and after the pour. A typical residential driveway permit in St. Tammany triggers two inspections: a pre-pour inspection after forms and reinforcement are set, and a final inspection after the slab is finished and cured.

At the pre-pour inspection, the inspector confirms that the subgrade has been excavated to the correct depth, that compacted base material is in place at the specified thickness, and that the forms are set to the correct elevation. For a standard 4 inch residential slab, the inspector expects to see 4 to 6 inches of compacted limestone or crushed concrete base, forms set to deliver a minimum 4 inch slab thickness, and reinforcement placed at the correct spacing. Number 3 rebar on 18 inch centers or 6x6 W2.9xW2.9 welded wire mesh are both common reinforcement configurations that pass inspection on residential pours in St. Tammany.

The final inspection confirms that the finished slab matches the approved grade plan, that control joints are cut at intervals no greater than 10 feet, and that the slab does not direct runoff toward an adjacent property or into a drainage servitude. Control joints on a residential driveway are typically saw-cut to a depth of 1 inch, which is one quarter of the 4 inch slab thickness, within 12 hours of the pour.

How Do Flood Zone Requirements Change a Concrete Permit in St. Tammany?

Parcels located in FEMA-designated flood zones face additional elevation and drainage requirements that affect both the permit timeline and the slab design. A significant number of St. Tammany Parish properties, particularly those near Lake Pontchartrain, the Tchefuncte River, the Bogue Falaya, and Bayou Lacombe, carry flood zone designations that add a layer of review to any concrete permit application.

Flood zone requirements can dictate the finished elevation of a concrete slab relative to the base flood elevation assigned to that parcel. The elevation difference can range from 1 to 3 feet above adjacent grade depending on the specific zone designation and the parish's freeboard requirements. A driveway slab itself may not carry an elevation mandate, but a detached garage slab or a carport foundation on a flood zone parcel almost certainly does.

Property owners can check their parcel's flood zone designation through the St. Tammany Parish GIS portal or by requesting a flood zone determination letter from the parish. Because FEMA maps are periodically updated and the parish can adopt standards that exceed the federal minimum, confirming the current requirements with the St. Tammany Parish Floodplain Management office before submitting a permit application prevents delays and redesign.

What Does the Permit Process Look Like From Application to Final Inspection?

A concrete permit in St. Tammany Parish follows a sequence of application, plan review, approval, pre-pour inspection, pour, and final inspection, typically spanning 3 to 6 weeks from submission to completed work. The permit application itself requires a site plan showing the proposed slab location, dimensions, setback distances from property lines, and drainage direction. Commercial projects or projects in flood zones require more detailed engineering documentation.

Plan review runs 5 to 15 business days for a straightforward residential project. Projects requiring floodplain review or drainage engineering take longer. Once the permit is issued, the contractor schedules the pre-pour inspection with the parish, typically giving 24 to 48 hours notice. The inspector visits the site, approves or flags corrections, and clears the pour. After the pour, the contractor allows 24 to 48 hours before foot traffic and a minimum of 7 days before vehicle traffic, then schedules the final inspection.

A concrete contractor who works regularly in St. Tammany Parish submits permit applications that match what the plan reviewer expects to see. Incomplete applications are the single largest cause of permit delays. Missing a setback dimension, omitting the drainage direction, or failing to include the flood zone determination on a flagged parcel can add 5 to 10 business days to the review while the parish requests revisions.

What Happens if Concrete Is Poured Without a Permit in St. Tammany Parish?

Unpermitted concrete work in St. Tammany Parish can result in fines, mandatory removal, and complications when selling the property. The parish has the authority to issue a stop-work order on any active pour that lacks an approved permit. If the work is already complete, the parish can require the property owner to apply for an after-the-fact permit, which involves the same inspections as a standard permit but adds a penalty fee.

An after-the-fact inspection on a finished slab presents a problem: the inspector cannot see the subgrade, the base thickness, or the reinforcement. The parish may require core samples to verify slab thickness and concrete strength. A 4 inch core sample pulled from a residential slab and sent for compressive strength testing costs $150 to $300 per sample point. If the core reveals the slab is only 3 inches thick or the concrete tests below the 3500 PSI minimum, the parish can order removal and replacement at the owner's expense.

Unpermitted concrete also creates title and insurance complications. A property inspection before sale will flag unpermitted improvements, and the buyer's lender may require either a retroactive permit or removal before closing. The cost of removing and replacing a 600 sq ft driveway slab that fails an after-the-fact review runs $8,000 to $12,000 in 2026, compared to $200 to $400 in permit fees to do the work correctly from the start.

How Does North Shore Concrete Work Differ From South Shore Practice?

North shore concrete work in St. Tammany Parish addresses erosion and washout rather than the settlement and hydrostatic pressure that dominate south shore projects in Jefferson and Orleans parishes. A driveway pour in Metairie or Kenner starts with the assumption that the subgrade is soft alluvial clay sitting over a water table 2 to 3 feet below grade, and the slab design responds with heavier reinforcement, thicker base, and sometimes a vapor barrier to manage moisture migration.

A comparable driveway pour in Mandeville or Covington starts with the assumption that the sandy subgrade will drain well and compact easily, but that water will find its way under slab edges if the grading does not direct runoff away from the perimeter. The standard north shore residential slab, 4 inches of 3500 PSI concrete over 4 to 6 inches of compacted crushed limestone, performs well as long as the base extends 6 to 8 inches beyond the slab edge and the finished grade slopes away from the slab at a minimum pitch of 2 percent.

The permit process reflects this difference. St. Tammany Parish plan reviewers focus on drainage and impervious surface calculations because stormwater management is the dominant engineering concern on the north shore. South shore parishes focus more on structural adequacy and elevation compliance. A contractor who pours on both sides of the lake adjusts the slab design, the base preparation, and the permit documentation to match the conditions and the reviewing authority.

A site visit determines what the soil, the grade, and the parish require before any permit application is filed. New Orleans Concrete Contractors assesses north shore properties for drainage, setback compliance, and flood zone status, then handles the St. Tammany Parish permit process as part of the project scope. Contact the office to schedule a site evaluation.