New Orleans sits in a humid subtropical zone where frequent hurricanes push water into attics, crawl spaces, and wall cavities across Orleans Parish. Older wood-frame and plaster homes in the French Quarter, Garden District, and Marigny trap moisture behind lath and horsehair plaster, letting mold colonies spread along joists before homeowners notice musty odors. Standard dehumidification often fails here because Gulf moisture re-enters the structure within hours unless negative-air machines and sealed containment are used.
Crawl-space mold is common in raised Uptown and Mid-City houses where the soil stays damp year-round. Removing affected insulation and treating joists requires vapor-barrier installation plus directed airflow that accounts for the high water table and poor drainage typical of Gentilly and Algiers. In post-storm events, hidden growth behind drywall in Lakeview or Bywater homes can reappear if the original water line is not traced back to the slab edge or roof leak.
Mold Remediation Near You — Choose Your City
Every city below has its own local Mold Remediation page with coverage details.
Orleans Parish code requires proper disposal of contaminated materials and documentation of moisture levels before any new finishes are installed. We use HEPA filtration and antimicrobial rinses rated for porous substrates, then verify clearance with third-party air sampling so the home passes inspection. This step prevents callbacks when summer humidity spikes again.
Technician insight
In New Orleans the thing that catches most people out with mold remediation is how quickly spores recolonize wood framing once the AC cycles off; older raised homes in Mid-City and Lakeview have so little airflow under the floors that you have to run dehumidifiers for days after the visible mold is gone or it returns with the next humidity spike.
Lakeview Attic After Tropical Storm
Water entered through a damaged roof vent during a summer storm and soaked insulation above a bedroom ceiling. We mapped moisture into the joists, built full containment, removed the wet insulation, treated the rafters, and ran dehumidifiers until readings stabilized. Clearance testing passed and the homeowner avoided a larger rebuild.
Mold Remediation Services We Offer
✓Crawl Space Mold Treatment
Remove mold from joists and soil under raised New Orleans homes, then install sealed vapor barriers to block ongoing humidity from the high water table.
✓Attic Mold Remediation
Clear mold growth on rafters and insulation caused by roof leaks or poor ventilation common after hurricanes in neighborhoods like Lakeview and Gentilly.
✓Post-Flood Mold Removal
Address mold that develops days after storm surge or street flooding in Algiers, Bywater, and Treme properties where drywall and flooring stay saturated.
✓Drywall and Insulation Replacement
Cut out and dispose of contaminated drywall and insulation in historic plaster walls while protecting original wood trim in French Quarter and Marigny homes.
✓HVAC Mold Cleaning
Clean and sanitize ductwork and coils where mold travels through central systems in older Uptown and Mid-City houses with shared air returns.
Mold Remediation Cost in Louisiana
| Service | Typical Range | What Affects It |
|---|---|---|
| Small contained area under 100 sq ft | $600–$1,200 | Single room with surface growth only |
| Crawl space treatment | $1,400–$2,800 | Includes vapor barrier; price rises with access difficulty |
| Attic remediation | $900–$2,200 | Varies by insulation type and roof access |
| Post-storm multi-room job | $2,500–$5,500 | Depends on drywall square footage and HVAC involvement |
Ranges are typical for Louisiana and confirmed with an exact written quote before any work starts.
How it works
- 1
Initial Moisture Mapping
We scan ceilings, walls, and floors with moisture meters in the affected rooms and note hidden pockets behind plaster in older Orleans Parish construction.
- 2
Containment And Air Filtration
Plastic barriers and negative-air machines isolate the work zone so spores do not spread into unaffected areas of the home or neighboring units.
- 3
Removal And Antimicrobial Treatment
Affected materials are removed, surfaces are cleaned with EPA-registered solutions, and remaining wood is treated to stop regrowth in the local humidity.
- 4
Drying Verification And Clearance
We run commercial dehumidifiers until readings drop below 12 percent, then arrange independent air testing before any reconstruction begins.
Pricing
Most jobs fall between a few hundred and several thousand dollars depending on square footage and hidden damage; call during business hours for a site visit.