Independent and unbiased 2026 pricing data
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San Francisco, CA

Radon Mitigation Cost in San Francisco

Estimated radon mitigation cost in San Francisco

$1,250–$3,900

Roughly about 55% above the national average.

One of the most expensive US markets, with very high labor and permit costs.

Estimate your cost

Based on San Francisco, CA pricing.

Estimated cost range

$1,250–$3,900

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An estimate for planning, not a quote. Get written quotes from local pros below.

Estimate, not a quote. Local prices vary by contractor and project. These are 2026 estimates for San Francisco, CA. Get written quotes from licensed San Francisco contractors before you budget.

Quote too high? DIY your radon mitigation

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A contractor quote is mostly labor. If that estimate felt steep, here is the exact gear to tackle this job yourself. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

First Alert RD1 Radon Gas Test Kit
First Alert First Alert RD1 Radon Gas Test Kit

$17.95

Charcoal test kit to confirm levels before and after mitigation.

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RadonAway RP145C Radon Mitigation Fan
RadonAway RadonAway RP145C Radon Mitigation Fan

$152.00

Industry-standard inline fan for a sub-slab depressurization system.

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Airthings Corentium Home Radon Detector
Airthings Airthings Corentium Home Radon Detector

$145.13

Battery digital monitor for ongoing pCi/L readings.

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Charlotte Pipe 4" Schedule 40 PVC Pipe, 2 ft
Charlotte Pipe Charlotte Pipe 4" Schedule 40 PVC Pipe, 2 ft

$21.98

Standard 4" PVC for the radon vent stack run.

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What to know about radon mitigation in San Francisco

Soil movement around San Francisco is usually modest, but local soil type still drives the right approach.

What affects radon mitigation cost in San Francisco

Beyond the local market, the same factors that drive radon mitigation cost everywhere apply in San Francisco:

  • System type and number of suction points.
  • Foundation type: slab, basement, or crawlspace.
  • Fan size and routing of the vent pipe.
  • Sealing of cracks and openings.

Radon Mitigation cost by system type in San Francisco

These figures are adjusted for San Francisco pricing (about 1.55x the national average), so they reflect what local homeowners actually pay.

Estimated radon mitigation cost by system type in San Francisco (2026)
System type Typical cost in San Francisco Notes
Sub-slab suction $1,250 to $3,900 The baseline.
Sump-pit system $1,350 to $4,250 installed
Crawlspace membrane $1,750 to $5,450 installed
Multiple suction points $1,850 to $5,800 installed

Radon Mitigation cost in San Francisco vs other metros

How a radon mitigation in San Francisco compares with nearby and similar-cost metros, using 2026 local estimates.

Metro Estimated radon mitigation cost vs national
San Francisco, CA $1,250–$3,900 about 55% above the national average
Los Angeles, CA $1,100–$3,500 about 40% above the national average
San Diego, CA $1,050–$3,250 about 30% above the national average
Sacramento, CA $950–$2,950 about 18% above the national average
San Jose, CA $1,200–$3,750 about 50% above the national average
Riverside, CA $950–$2,950 about 18% above the national average

Frequently asked questions

How much does radon mitigation cost in San Francisco?

In San Francisco, CA, radon mitigation typically costs $1,250 to $3,900 in 2026 for a standard project, about 55% above the national average. Your exact price depends on size, materials, and scope.

Why does radon mitigation cost more or less in San Francisco?

One of the most expensive US markets, with very high labor and permit costs. Labor rates, permit costs, and local demand are the main reasons San Francisco prices differ from the national average.

Do I need a permit for radon mitigation in San Francisco?

Most radon mitigation projects require a permit. Requirements vary by city and California jurisdiction, so confirm with your local building department. A licensed contractor usually pulls the permit for you.

When is the best time of year for radon mitigation in San Francisco?

In San Francisco, the mild climate means most projects can run year-round, with only the occasional rainy stretch to plan around.

Is radon mitigation cheaper outside San Francisco?

Sometimes. San Francisco runs about 55% above the national average. Nearby smaller towns with lower labor costs can come in cheaper, while denser urban areas often cost more. Always compare quotes from contractors who serve your specific area.

Radon Mitigation cost in other cities

See the national Radon Mitigation cost guide