2026-01-22 · 4 min read
Radon Mitigation Cost in Louisiana (2026)
Louisiana is mostly low radon risk, but elevated readings do occur. Pier-and-beam and slab homes are common. Mitigation costs $900–$2,000 when needed.
Radon in Louisiana
Louisiana's alluvial delta and Gulf Coast geology produces relatively low radon compared to the interior US. Most of the state is EPA Zone 3 (predicted average below 2 pCi/L). However, northern Louisiana — particularly the Ark-La-Tex region and the Red River valley — has somewhat higher readings due to different underlying geology.
Even in Zone 3 states, individual homes regularly test above 4.0 pCi/L. If you've never tested, it's worth doing — tests cost $15–$30 and provide certainty.
Cost by Foundation Type
Slab-on-Grade: $900–$1,700
The most common foundation in modern Louisiana construction. Standard pricing applies.
- Standard slab: $900–$1,400
- Larger home or complex routing: $1,300–$1,700
Pier-and-Beam: $2,000–$4,500
New Orleans, Baton Rouge, and older Louisiana cities have significant pier-and-beam housing stock. Crawl space conditions vary widely — some have very limited clearance due to high water tables and flood mitigation elevations.
- Good access crawl space: $2,000–$3,200
- High water table, moisture issues: $3,000–$4,500
Louisiana-Specific Cost Factors
High water table: Much of Louisiana sits at or below sea level. Crawl space moisture management is often complex and expensive. Radon mitigation and moisture remediation costs can overlap significantly.
Elevated homes: Post-Katrina elevated construction (FEMA base flood elevation requirements) in the New Orleans metro creates unique ventilation dynamics. Some elevated homes actually have better natural ventilation that reduces radon accumulation.
Heat and humidity: Louisiana's climate accelerates wear on exterior-mounted fan components. Ask contractors about equipment rated for high-humidity environments.
Contractor availability: Louisiana has fewer certified radon contractors than most high-risk states. Response times may be longer, and pricing may be less competitive due to reduced market activity.
Louisiana Resources
- Louisiana Dept of Health: ldh.la.gov (search "radon")
- Verify NRPP: radonproficiency.org
- Verify NRSB: nrsb.org
Frequently Asked Questions
Is radon a problem in Louisiana?
Louisiana is predominantly EPA Zone 3 (low risk), but individual homes can still test above the 4.0 pCi/L action level. Northern Louisiana has slightly higher risk than the southern coastal areas.
How much does radon mitigation cost in Louisiana?
For slab homes, expect $900–$1,600. Pier-and-beam homes (common in older New Orleans and Baton Rouge neighborhoods) run $2,000–$4,500 depending on crawl space conditions.
Does Louisiana require radon contractor certification?
Louisiana does not have a state radon contractor licensing program. Hire NRPP or NRSB nationally certified contractors.
Find a Certified Mitigator Near You
Every contractor on RadonBase is NRPP or NRSB certified — mitigators only, no testers.
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