Commercial, residential, trade and specialty contractor licensing.
Louisiana is a project-value + classification state. The Louisiana State Licensing Board for Contractors (LSLBC) regulates commercial, residential, specialty and trade contracting, while individual plumbing credentials remain in a 2026 transition from the State Plumbing Board to LSLBC. This guide connects the rules to real permit signals and opportunity qualification.
Commercial, residential, trade and specialty contractor licensing.
General commercial project-value threshold.
Lower contractor-level threshold for electrical, mechanical and plumbing.
Hazardous Materials classification applies essentially immediately.
We organize licensing rules around how contractors, subcontractors and suppliers actually qualify public construction signals.
LSLBC, Louisiana statutes, SPBLA, LDEQ and the State Uniform Construction Code framework are the controlling research sources used here.
Louisiana licensing is not one universal general-contractor credential. Project value decides whether state licensing is triggered, and the classification decides what work the business may contract to perform.
For TigerLeads users, the most useful order is simple:
From January 1, 2026, residential roofing valued at $7,500 or more requires Residential Roofing or Residential Construction.
Act 908 moves plumbing licensing and regulation to LSLBC. SPBLA continues operating during the transition, with full statutory effect scheduled for January 1, 2027.
The large color boxes below intentionally show the license type in high-contrast text. Orange and teal boxes use explicit dark text so the license label never disappears.
Louisiana requires the appropriate commercial contractor classification when a commercial project reaches $50,000 or more in project value. Electrical, mechanical and plumbing scopes have a lower contractor-license trigger, and hazardous-materials work has a separate $1 trigger.
$50,000+ commercial project value
Major classifications + subclassifications + specialties
Louisiana State Licensing Board for Contractors
New residential construction generally requires the Residential Construction classification at $50,000 or more. Louisiana now also has a specific Residential Roofing subclassification with its own 2026 rule.
$50,000+ new residential construction
$7,500+ residential roofing
LSLBC Residential Subcommittee
Existing residential improvement work from $7,500 up to but below $50,000 falls into Louisiana's Home Improvement Registration lane when the work is nonstructural. Structural work and roofing have stricter licensing boundaries.
$7,500 to under $50,000
Existing residential improvements
Does not authorize structural-integrity work
Mold remediation projects at $7,500 or more require the LSLBC Mold Remediation license. The classification carries training and insurance requirements separate from ordinary building work.
$7,500+ mold remediation
24 hours board-approved mold training
LSLBC
Louisiana treats hazardous-materials contracting differently from ordinary construction. The major classification covers asbestos, lead-based paint, hazardous waste and underground storage tanks and is triggered at $1 or more, with outside environmental credentials where required.
$1+ hazardous-materials work
8 — Hazardous Materials
LDEQ or other agency credential as applicable
Filter by project type, geography and timing—then verify the license fit before outreach.
Each expandable guide connects the official classification to common permit language, likely decision-makers and supplier opportunities.
Major commercial classification for building construction, alteration, repair, demolition and related site improvements, with many listed subclassifications underneath it.
License trigger: Commercial projects $50,000+; exact classification must match scope.
Official Louisiana source →New commercial building; addition; tenant buildout; major alteration; structural repair.
Owners, developers, general contractors, property managers, trade subcontractors.
Concrete, steel, framing, drywall, roofing, glazing, finishes, rentals.
State contractor classification for electrical systems. Louisiana does not use a separate statewide individual electrician board in the way some states do; local credentialing may still apply.
License trigger: Electrical work over $10,000 at contractor level.
Official Louisiana source →Service upgrade; panel; generator; lighting; low voltage; EV charging; solar electrical.
Owners, GCs, electrical contractors, developers, facility managers.
Switchgear, panels, transformers, conduit, wire, controls, lighting.
Mechanical subclassification covering heat, air conditioning, ventilation, duct work and refrigeration.
License trigger: Mechanical work over $10,000.
Official Louisiana source →HVAC replacement; RTU; chiller support; refrigeration; duct; mechanical permit.
Owners, GCs, mechanical contractors, facility teams, distributors.
Equipment, duct, controls, refrigerant accessories, ventilation products.
LSLBC contractor-level Plumbing classification applies to plumbing work over the state contractor threshold. Individual plumbers remain under the State Plumbing Board during the 2026 transition period.
License trigger: Plumbing work over $10,000 at contractor level.
Official Louisiana source →Plumbing permit; repipe; water heater; sewer/water; new building plumbing.
Owners, GCs, plumbing companies, developers, suppliers.
Pipe, valves, fittings, fixtures, pumps, water heaters.
As of August 2026, individual plumbing and natural-gas credentials remain administered by the State Plumbing Board of Louisiana while Act 908 transitions plumbing licensing authority to LSLBC for full effect January 1, 2027.
License trigger: Individual credential depends on role; contractor-level plumbing over $10,000 still requires LSLBC classification.
Official Louisiana source →Plumbing inspection; gas piping; medical gas; water supply protection; residential plumbing repair.
Master plumbers, journeymen, residential plumbers, gas fitters, plumbing firms.
Fixtures, pipe, valves, gas components, backflow devices, medical-gas materials.
Commercial Building Construction subclassification for roof systems, roof decks, waterproofing, flashing, sheet metal and siding. Residential roofing has a separate 9.2 classification beginning in 2026.
License trigger: Commercial roofing follows commercial threshold; residential roofing $7,500+ requires Residential Roofing or Residential Construction.
Official Louisiana source →Reroof; roof replacement; storm repair; commercial roof; residential roof permit.
Owners, roofers, GCs, property managers, insurers, distributors.
Shingles, membrane, metal roofing, insulation, flashing, fasteners.
Specialty classification for concrete foundations, columns, walls, floors, slabs, driveways and related reinforcing/forming work outside highways, streets and bridges.
License trigger: Commercial specialty threshold generally $50,000+ unless another rule applies.
Official Louisiana source →Foundation; slab; parking; driveway; structural concrete; site concrete.
GCs, concrete subs, developers, ready-mix suppliers.
Ready-mix, rebar, forms, admixtures, sealers, pumps.
Specialty classification covering rough and finish carpentry and millwork.
License trigger: Commercial specialty threshold generally $50,000+ unless work falls under broader residential rules.
Official Louisiana source →Framing; carpentry; millwork; renovation; structural alteration.
GCs, framers, builders, millwork shops, lumber suppliers.
Lumber, engineered wood, connectors, fasteners, millwork.
Building Construction subclassification for gypsum board products and finishes; the official scope specifically distinguishes drywall from stud/framing work.
License trigger: Commercial specialty/subclassification threshold generally $50,000+.
Official Louisiana source →Drywall permit language inside buildouts; partitions; renovation; finish phase.
GCs, drywall subs, property managers, distributors.
Board, compound, fasteners, corner bead, accessories.
Building Construction subclassification covering a wide range of flooring systems and decking, including tile, terrazzo, carpet and resilient surfaces.
License trigger: Commercial specialty/subclassification threshold generally $50,000+.
Official Louisiana source →Tenant improvement; multifamily turn; flooring replacement; decking.
Owners, GCs, flooring installers, distributors.
LVT, carpet, tile, hardwood, adhesives, underlayment.
Specialty classification for painting of immovable property plus coatings and linings.
License trigger: Commercial specialty threshold generally $50,000+; lower-value residential work can fall into home-improvement rules.
Official Louisiana source →Repaint; coating; industrial blasting; tenant finish; exterior restoration.
Owners, GCs, painters, industrial maintenance firms, property managers.
Coatings, primers, abrasives, spray equipment, masking and PPE.
Building Construction subclassification for masonry structures and veneers, including brick, stone, concrete block and related accessories.
License trigger: Commercial specialty/subclassification threshold generally $50,000+.
Official Louisiana source →Masonry wall; veneer; repair; structural masonry; building envelope.
GCs, masons, developers, masonry suppliers.
Brick, block, mortar, anchors, stone, reinforcing.
TigerLeads helps contractors and suppliers qualify public project records instead of buying generic lead lists.
Louisiana uses major classifications, subclassifications, specialties and credential-based classifications. Search by code, trade or scope.
Commercial building/highway subclassification for asphalt or concrete pavements, sidewalks, parking areas and driveways.
Official classification →Gypsum board products and associated finishes; framing excluded from this scope.
Official classification →Stone, tile, terrazzo, carpet, resilient flooring, decking and related systems.
Official classification →Foundation systems associated with building construction.
Official classification →Glazing, glass systems, storefront-type work and related building components.
Official classification →Building insulation systems within the classification scope.
Official classification →Brick, stone, block, structural tile, glass block and related masonry.
Official classification →Structural and sheet piles for buildings and related structures.
Official classification →Pneumatic tube and conveyor systems and components.
Official classification →Rigging, hoisting, demolition, raising, leveling and moving structures.
Official classification →Roof systems, decks, waterproofing, flashing, sheet metal and siding.
Official classification →Structural steel erection and installation.
Official classification →Swimming-pool construction within commercial building classification.
Official classification →Water-cooling tower construction, installation and repair.
Official classification →Major classification for highways, streets, bridges and related paving/earthwork.
Official classification →Drainage structures associated with highway and civil projects.
Official classification →Earthwork, groundwater control, drainage, levee and geotextile work.
Official classification →Permanent or paved asphalt highway and street work.
Official classification →Permanent or paved concrete highway and street work.
Official classification →Major classification for industrial facilities, waterways, railroads and oilfield construction.
Official classification →Navigation, coastal restoration, erosion control and sediment handling.
Official classification →Transmission/distribution lines, poles, towers and substations; $10,000 electrical threshold applies.
Official classification →Deep and shallow foundations, piles, slurry walls and related work.
Official classification →Process piping and insulation for industrial facilities.
Official classification →Water, sewer, gas and stormwater infrastructure plus specified public utility systems.
Official classification →Distribution mains, pump stations and related water-utility components.
Official classification →Low-voltage electrical applications; contractor license required when value exceeds $10,000.
Official classification →Major mechanical classification including HVAC, refrigeration, hydronic/steam, gas piping and process systems.
Official classification →Asbestos, lead, hazardous waste and underground storage tanks; $1 trigger and outside credentials.
Official classification →LDEQ-credentialed UST construction, maintenance and repair.
Official classification →Major residential construction classification for qualifying projects.
Official classification →Residential pools, spas and related accessories; $7,500 threshold.
Official classification →Residential roofing classification required for $7,500+ residential roofing work from Jan. 1, 2026.
Official classification →Board-approved mold remediation classification; $7,500 threshold.
Official classification →Work over $50,000 not specifically defined under another classification.
Official classification →Rough/finish carpentry and millwork.
Official classification →Wetland, coastal, shoreline and habitat-restoration construction.
Official classification →Commercial concrete construction excluding highways, streets and bridges.
Official classification →Industrial cleaning, hydroblasting, vacuum services and nonhazardous waste handling.
Official classification →Industrial, commercial and residential insulation systems.
Official classification →Painting, coatings, linings and blasting.
Official classification →Solar PV/thermal systems; requires qualifying major classification and $10,000 threshold.
Official classification →Telecommunication, water, fire and other tower construction.
Official classification →Requires the relevant Louisiana water-well credential.
Official classification →Environmental well drilling with outside credential requirement.
Official classification →Supplying labor only to contractors; thresholds track the underlying scope.
Official classification →Credentialed landscaping, irrigation and finish grading; hardscape excluded.
Official classification →Classification selection, qualifying-party requirements, financial information, exams, credentials and insurance can vary by license type.
Decide whether the work is commercial, residential construction, home improvement, mold remediation or a hazardous-materials scope.
Louisiana project value includes labor, materials, rentals and direct/indirect project expenses; do not look only at the contractor's own labor invoice.
Select the major classification, subclassification or specialty that actually authorizes the scope of work.
The business must have the required qualifying party for examinations/credentials tied to the classifications requested.
Commercial and residential applicants generally complete the board's Business and Law requirement; trade exams or credentials apply by classification.
Current LSLBC materials require financial information and minimum net-worth benchmarks that vary by license type.
Residential, Home Improvement and Mold applications have liability/workers' compensation requirements; 2026 Act 757 changed insurance rules, so verify live requirements.
Use the public LSLBC search and, during the plumbing transition, SPBLA search for individual plumbing credentials before relying on a contractor record.
A valid state license does not replace parish or municipal permits, inspections, local registrations, code enforcement or public-safety requirements.
Louisiana’s statutory project value includes labor, materials, rentals and direct/indirect project expenses, even when another party pays those costs.
Act 757 took effect August 1, 2026 and changed insurance requirements for residential construction/subclassifications, mold remediation and home improvement applicants. Use the live LSLBC notice before filing or renewing.
Act 908 transfers plumbing licensing and regulation to LSLBC. As of August 2026, SPBLA is still active during the transition; full statutory effect is January 1, 2027.
Louisiana’s code framework is statewide, but enforcement is distributed. State law governing adopted codes changed effective July 1, 2026, so verify current code editions and the authority having jurisdiction before relying on a permit requirement.
Hazardous-materials contracting may require both an LSLBC classification and environmental credentials through LDEQ or another agency. Treat these leads as high-compliance opportunities.
A supplier that only furnishes products is not normally acting as a contractor. Furnish-and-install contracts can cross into contractor licensing and should be checked before quoting.
Use public permit data to understand scope, timing and likely demand. Then qualify the record before spending time or credits.
Read value, applicant, contractor-of-record and stage together.
$50k licensing threshold; verify contractor status before outreach.
From Jan. 1, 2026, $7,500+ residential roof work requires the proper classification.
Permit may name a GC while downstream finish work remains relevant.
$10k contractor threshold; verify local permit/inspection requirements too.
$10k contractor threshold; equipment model/scope can reveal material demand.
Contractor + individual credential layers both matter during 2026 transition.
Determine whether project is building, highway or heavy before matching classification.
High-value public and resilience projects create distinct supplier opportunities.
Treat as high-compliance signal: $1 contractor trigger plus environmental credential checks.
Use project timing and trade fit to prioritize outreach while materials, subs and specialty services may still be needed.
Louisiana’s classification system makes qualification especially useful because the project value and license scope can be read together.
Translate permit language into contractor context before outreach.
Public records are useful because they show context—not because every job is unawarded.
Licensing, insurance, code and plumbing-transition rules can change. Use these official Louisiana sources before relying on a credential or threshold.
Short answers for contractors, subcontractors, suppliers and permit-data users.
Use TigerLeads to discover public construction activity, understand project context and focus your outreach where your trade, territory and timing align.
