Mold remediation cost in New Orleans, LA

What New Orleans's climate does to a house

New Orleans sits in the hot-humid band, where air conditioning runs most of the year and outdoor air carries moisture almost every month. A cooled house pulls that vapor inward through walls, around windows, and into supply ducts, and it condenses on the first cold surface it meets. That is why remediation crews here open up closets on exterior walls, the backs of vinyl wallpaper, duct boots behind registers, and the attic around uninsulated duct runs.

Attics and crawl spaces take the worst of it. An attic with ducts in it sweats on the duct jackets through summer, and a crawl space with open vents breathes humid air across cool joists all season. EPA's target of indoor humidity below 60 percent, ideally 30 to 50, is hard to hold here without a dehumidifier or a correctly sized system, and oversized air conditioners that short-cycle leave rooms cool and damp.

The Building America program places Orleans Parish in the hot, humid climate, and the IECC map puts it in zone 2A. Both maps are county-level, which is why this page cites Orleans Parish rather than the city line.

Homes built around 1960: what that means for the scope

By the American Community Survey, the median home in New Orleans was built in 1960. Postwar houses brought slab-on-grade foundations, drywall, and smaller bathrooms with less ventilation. Original galvanized or cast iron plumbing from this period is at the end of its service life, and slow leaks under slabs and inside walls are a common mold source in this stock.

Additions and converted garages from later decades often meet the original house at a roofline or wall that was never flashed well. Crews in this housing stock check the plumbing walls behind kitchens and bathrooms first, then the junctions where new met old.

New Orleans is in the South, where slabs dominate. Of new single-family houses completed in the region in 2025, 88 percent sat on a slab, 8 percent over a crawl space, and 4 percent on a basement, per the Census Bureau's Characteristics of New Housing. Older houses here are more likely to have a crawl space, which in a humid climate is the most common place crews find hidden growth. Slab houses move the problem to plumbing walls, bathrooms, and the attic where the ducts run.

Flood exposure in Orleans Parish

FEMA's National Risk Index rates inland flooding risk for Orleans Parish as Relatively High. FEMA rates coastal flooding risk for Orleans Parish as Relatively Moderate. That rating reflects how much is in harm's way as much as how often water rises, and for a homeowner it means two things: flood water is Category 3, contaminated water, and the clock on mold starts as soon as it recedes. Porous material that stayed wet comes out. Drywall gets cut above the water line. Insulation, carpet, pad, and cabinet toe kicks go.

Extraction and drying are priced apart from mold work, at $3.00 to $7.50 per square foot of wet floor, with flood water at the top of that rate at about $7.50. Mold remediation that starts before the structure is dry fails, so the sequence is pump, dry, verify, then remediate. Whole-house scope after a flood runs $10,000 to $30,000. Homeowners insurance excludes flood; a separate flood policy, where one exists, is the policy that applies.

What mold work costs in New Orleans

The bands on this page are national. No primary source publishes a mold remediation price index for New Orleans, and this site does not invent one, so the engine applies no regional multiplier. A local quote can land above or below these figures. The scope lines are what to compare.

The estimate flow combines these lines for your situation: where the mold is, how large the area is, whether you can see it, any water event in the last 90 days, and HVAC involvement. Hidden growth adds an inspection line at $450 to $700 because the extent is unknown until someone finds the source.

Hiring a remediation company in Louisiana

Louisiana regulates mold work. Louisiana requires a mold remediation license from the LSLBC when the project value exceeds $7,500. Licensees complete 24 hours of board-approved training in mold remediation and assessment. The agency is the Louisiana State Licensing Board for Contractors, and its public lookup is the place to check a license before signing anything.

Licensing does not set prices or guarantee workmanship. Ask for a written scope that separates inspection from remediation, a moisture-source plan, containment and negative air on any job over about 10 square feet, and a clearance step at the end. Companies that quote the remediation without doing the inspection are guessing.

Insurance

Homeowners policies that cover mold usually cap it at $1,000 to $10,000, and some carriers start the sublimit at $2,500 to $5,000. Coverage usually requires a sudden covered peril such as a burst pipe. Long-term leaks, floods, sewer backups, and ground seepage are commonly excluded. Read the declarations page and ask your agent before the work starts; the cap can sit well below a whole-house job.

How the estimate works in New Orleans

Answer seven questions and the band appears on screen before you share any contact details. Send it on and it goes to the featured remediation company for New Orleans. Where no company has claimed the city, we forward the request by hand and say so. An emergency request skips the questions entirely and reaches a person. New Orleans has a population of about 371,853 by the ACS, and every address in Orleans Parish and the surrounding area can use the estimate.