How much does radon mitigation cost in Long Island?

Most Long Island projects land between $1,150 – $3,250, with an average near $2,200. Local crews quote roughly $1,150 – $3,250 per system.

What is included in the Long Island price per system?

Typically materials, labor and cleanup. Permits, disposal and access challenges are usually quoted separately.

Unit pricing

Long Island radon mitigation pricing per system

Radon Mitigation cost per system in Long Island, New York in 2026.

Low

$1,150

Average

$2,200

High

$3,250

Long Island crews quote about $1,150 – $3,250 per system.

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Multiply local unit rates by your real measurements.

What drives radon mitigation prices in Long Island

Local labor, permitting and climate move Long Island prices away from the national average.

Labor market

Nassau and Suffolk crews are busy year round with premium suburban pricing.

Permits

Town-level permits vary widely and can be slow.

Climate

Coastal wind zones and nor easters affect roofing and siding.

Long Island unit pricing by material

Single-point sub-slab system$1,350 – $1,900

Sub-slab with sealing$1,900 – $2,500

Crawlspace membrane system$2,500 – $3,200

Multi-point system with monitoring$3,200 – $4,400

Ways to lower your Long Island price

Test first with a $20 kit before commissioning a system.
Route the pipe on the least visible elevation to skip cosmetic upgrades.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

Long Island questions

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