Jefferson Parish, Louisiana Building Permit Guide

Building permits for unincorporated Jefferson Parish are issued by the parish Building Permits Department (formerly the Department of Inspection and Code Enforcement), from an East Bank office at 1221 Elmwood Park Boulevard, Suite 101, Jefferson (504-736-6957) and a West Bank office at 1855 Ames Boulevard, Suite A, Marrero (504-364-3512). Jefferson is the second most populous parish in Louisiana, and it contains one of the state's largest communities in a form that surprises people constantly: Metairie has no city government at all, and is permitted by the parish.

This guide covers the department and how to reach it, the local conditions that shape a filing here, what permits cost and who may pull them, and how inspections are booked. Rules that apply everywhere in Louisiana are summarized in each section, with a link to the full statewide explanation.

This guide covers unincorporated Jefferson Parish, including Metairie. Kenner, Gretna, Westwego, Harahan and the parish's other municipalities permit separately.

What requires a building permit in Jefferson Parish?

Under the LSUCC as administered by the parish, a permit is required before most construction, alteration, demolition, repair, relocation, change of occupancy and trade work begins in unincorporated territory.

Exemptions are narrow and local, and an exemption from a building permit is not an exemption from zoning, setbacks, floodplain rules, utility approval or a fire authority review. Confirm scope with the department before work starts rather than after.

Which code edition applies

Jefferson Parish enforces the statewide LSUCC, as do the municipalities inside it. Because Louisiana prohibits local variation of the construction code in either direction, the technical requirements do not change as you cross from unincorporated Metairie into Kenner or Gretna. What changes is the fee schedule, the portal, the submittal expectations, the inspection process and the flood and zoning layers.

Every Louisiana parish and municipality enforces the state’s Uniform Construction Code (R.S. 37:3737), adopted by the Louisiana Uniform Construction Code Commission: the 2021 International Codes with Louisiana amendments, in force since 1 January 2023, and the 2020 National Electrical Code, with the 2024 codes taking effect on 1 January 2027. A local government may set more stringent requirements only with the Commission’s approval, and the State Fire Marshal reviews plans for fire and life safety on all but one- and two-family dwellings. How the LSUCC works

Who handles permitting in Jefferson Parish?

The parish permits unincorporated territory, which includes Metairie, Terrytown, Marrero, Harvey and much of the West Bank. Its Building Permits Department issues building permits and the electrical, mechanical and plumbing permits, and applications are made through the parish’s online permitting portal on MGO Connect. Kenner, Gretna, Westwego, Harahan, Jean Lafitte and Grand Isle are incorporated and permit their own limits.

The parish is physically split by the Mississippi River into an East Bank centred on Metairie and a West Bank running through Gretna, Harvey, Marrero and Westwego. Levee and drainage systems, pump stations and elevation requirements differ across that geography, and a flood determination for one parcel does not carry over to another. Establish the position for the specific parcel.

Grand Isle is a further case of its own: a barrier island town on the Gulf, exposed to coastal wind and flood conditions. Expect design criteria there to differ from those on the East Bank.

In 2025, building permits issued in unincorporated Jefferson Parish authorized 320 new privately owned housing units, 318 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.

Louisiana’s counties are parishes, governed by a police jury or a home rule charter government, and some large communities, such as Metairie, have no city government and are permitted by the parish. The state sets the code and licenses contractors; the local authority sets fees, submittal requirements, review times, inspections, zoning, floodplain administration and local registration. What the state and the parish each decide

Permit types

Residential permits

Residential work spans dense post-war suburban stock in Metairie and the East Bank, West Bank subdivisions, and rebuilding on the coast. Flood zone and base flood elevation are the governing constraints on most projects, and on renovation the substantial improvement threshold determines whether a project stays a renovation or becomes a full-compliance rebuild. Establish both before scoping.

Commercial permits

Commercial development includes major retail and office concentrations in Metairie, medical facilities, industrial and port-related activity along the river, and hospitality. Commercial plans are reviewed by the parish’s building, mechanical, electrical and plumbing sections and by parish Fire Prevention, and also by the State Fire Marshal; new buildings and changes of use add parish engineering review. Expect flood, drainage and elevation requirements alongside the building set.

Flood elevation and wind design decide most Louisiana projects: in a FEMA Special Flood Hazard Area, base flood elevation, flood-resistant construction and the substantial-improvement rules apply; the state code’s wind provisions include wind-borne debris requirements in wind-borne debris regions; and elevation certificates are permit documents that can delay the certificate of occupancy. Flood, elevation and wind in Louisiana

Jefferson Parish permit costs and fees

Jefferson Parish fees are valuation-based against the parish schedule, with plan review and separate trade fees. Each municipality inside the parish maintains its own separate schedule.

Fee schedules are revised on each jurisdiction’s own cycle, so ask Jefferson Parish for the schedule in force on your filing date, and ask separately about plan review, trade, re-inspection and revision charges. How Louisiana permit fees work

Trade permits and who may pull them

The Louisiana State Licensing Board for Contractors requires a commercial licence for projects of $50,000 or more, a residential licence for a new house or duplex of $50,000 or more, a home improvement licence for residential improvement work of $7,500 to under $50,000, and a licence for electrical, mechanical and plumbing work of $10,000 or more. Since 1 January 2026 residential roofing of $7,500 or more needs a roofing or residential licence, and plumbers are also licensed by the State Plumbing Board of Louisiana until its duties pass to the contractor board on 1 January 2027. Contractor licensing in Louisiana

How to apply for a Jefferson Parish building permit

In Louisiana the approvals that sit ahead of the building permit, such as historic or design review, zoning and subdivision, most often decide timing. Before filing, ask Jefferson Parish for the current review turnaround, which bodies review commercial plans (the State Fire Marshal and the local authority or its contracted reviewer), and which approvals must be in hand first. Approvals and corrections in Louisiana

Inspections in Jefferson Parish

Standard checkpoints include foundation, framing, rough-in electrical, plumbing and mechanical, insulation and final, with a certificate of occupancy required before legal occupancy or use. Elevated construction adds elevation verification at defined stages.

Elevation certification is the item most often produced too late. Agree with the department at the outset who provides it and when, because a certificate arriving at the end holds the certificate of occupancy rather than merely completing the file.

Do not cover work before the required inspection has been approved. Keep the issued permit, the approved plans, energy documentation, product listings, special-inspection reports and your correction responses available on site.

Plan framing, sheathing and roofing inspections so that wind-resistive connections and opening protection can be seen before they are covered, have elevation verified at the required stages, and keep product approvals and elevation documentation on site. Inspections in Louisiana

Jefferson Parish permit search and official resources

Permit records sit with the authority that issued them. In Louisiana that is usually straightforward, because the LSUCC has applied statewide since 2023 and the permitting authority for a given parcel is generally stable — but records predating the statewide code, or predating a municipal incorporation or annexation, may sit elsewhere. If you are buying, refinancing or renovating, ask the Building Permits Department what it holds for the parcel and whether any permit was closed without a final inspection.

On flood-exposed property the record question is sharper than usual. Prior elevation certificates, floodplain determinations and any history of substantial damage or improvement all bear on what a new project will be required to do, and they are worth obtaining before design rather than during review.

These are the primary sources behind this guide. Codes, fee schedules and portal procedures change, and in Louisiana a jurisdiction’s own published packet can lag a code change by months — the adopted ordinance governs, not an un-updated handout. Confirm the position for your filing date.

• Jefferson Parish
• Louisiana Uniform Construction Code Commission
• Louisiana Office of State Fire Marshal
• Louisiana State Licensing Board for Contractors

Frequently asked questions

Does Metairie issue its own building permits?

No. Metairie has no city government at all. It is unincorporated and permitted directly by Jefferson Parish, despite being one of the largest communities in Louisiana.

Which municipalities permit their own limits?

Kenner, Gretna, Westwego, Harahan, Jean Lafitte and Grand Isle. Everything else, including Metairie and much of the West Bank, is parish.

Does the code change between the parish and the cities?

No. The LSUCC applies statewide and cannot be varied locally in either direction. Fees, portals, submittal requirements and inspection processes do differ.

Are flood requirements the same across the parish?

No. Levee, drainage and elevation conditions differ between the East Bank, the West Bank and the coastal communities. Establish the position for the specific parcel.

Who reviews my commercial drawings?

On commercial work, usually both. The Office of State Fire Marshal reviews plans for fire and life safety on every building except one- and two-family dwellings (R.S. 40:1574), and the local authority, or a reviewer it contracts with, reviews against the Uniform Construction Code. Establish both routes before you submit.

What licence does my contractor need?

A Louisiana State Licensing Board for Contractors credential in the right classification. A commercial licence is required at $50,000 or more, a residential licence for a new house or duplex of $50,000 or more, and a home improvement licence for residential improvement work of $7,500 to under $50,000. Electrical, mechanical and plumbing contractors need a licence for work of $10,000 or more, residential or commercial (R.S. 37:2150.1).

Simplify Jefferson Parish permitting with Alliance Permitting

Jefferson Parish combines Louisiana's clearest unincorporated-community trap with a flood picture that changes across the river. The errors here are jurisdictional and elevational, and both are settled before drawings rather than during review.

Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.

Contractors and builders choose Alliance for Jefferson Parish because the work is done by people who have stood at the counter:

• We confirm parish versus municipal jurisdiction, starting with Metairie.
• We establish flood zone and base flood elevation for the specific parcel.
• We test renovation scopes against the substantial improvement threshold.
• We line up the parish and State Fire Marshal reviews on commercial work.
• We schedule elevation certification into the build rather than the closeout.

Alliance Permitting is a permit documentation and submission company in Louisiana. We prepare your paperwork, file it correctly and coordinate with the building department through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Jefferson Parish permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.