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San Jose/Radon Mitigation

Radon Mitigation in San Jose, CA

San Jose homeowners face mediterranean climate: dry summers (avg 83°f), mild wet winters (46 inches of rain nov–april) that accelerates wear on exterior surfaces. Our local pros understand your area's specific challenges and deliver quality work on every job.

Serving Willow Glen, Rose Garden, Almaden Valley, Evergreen, Berryessa, and surrounding San Jose communities.

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Why San Jose Homes Need Radon Mitigation

Mediterranean climate: dry summers (avg 83°F), mild wet winters (46 inches of rain Nov–April)
Wildfire smoke from Diablo Range and Santa Cruz Mountains in late summer
Drought conditions during La Niña years causing ground movement
Hayward Fault runs through the East Bay — significant earthquake risk
Intense summer sun despite moderate temperatures
Common Home Types We Service
Eichler homes (post-war modernist, unique to Bay Area)Ranch and split-level homes from 1960s–1980sVictorian homes in Willow Glen and Rose GardenNew construction luxury in Almaden Valley and EvergreenTech-era condos and townhomes throughout San Jose

What You Get

Reduces radon levels by 90–99%
Most systems installed in one day
Sub-slab depressurization — proven, EPA-recommended method
Quiet operation — most homeowners don't notice the system
Post-mitigation testing included to verify effectiveness
System lifespan of 20+ years with minimal maintenance

Our Radon Mitigation Process

01

Radon Testing

If you don't have recent test results, we conduct or recommend short-term (48-hour) or long-term testing before and after mitigation.

02

Diagnostic Testing

We perform suction/pressure field extension tests to determine the best system placement and pipe routing.

03

System Installation

A PVC pipe is installed through the floor slab (or membrane) and connected to a continuously running fan that draws radon from beneath the home and exhausts it above the roofline.

04

Post-Mitigation Test

A follow-up radon test confirms the system is achieving adequate reduction — typically to below 2.0 pCi/L.

Seasonal Considerations for San Jose

1
Wildfire smoke exterior cleaning (August–October)
2
Dry season (May–October) drought stress on landscaping and wood structures
3
Post-earthquake structural assessment (Hayward Fault risk)
4
Spring rain debris and slope erosion cleanup
5
Winter drain and gutter maintenance during heavy rain season

Areas We Serve in San Jose

Our radon mitigation pros are available throughout the San Jose metro area, including:

Willow GlenRose GardenAlmaden ValleyEvergreenBerryessaCampbellLos GatosSaratogaMonte SerenoLos Altos

Radon Mitigation FAQ for San Jose Homeowners

How often should San Jose homeowners get radon mitigation?
Given San Jose's mediterranean climate: dry summers (avg 83°f), mild wet winters (46 inches of rain nov–april), most homeowners benefit from radon mitigation at least once a year. Wildfire smoke exterior cleaning (August–October) often makes spring or fall the optimal time to schedule service.
What home types in San Jose most need radon mitigation?
Eichler homes (post-war modernist, unique to Bay Area) and Ranch and split-level homes from 1960s–1980s are the most common home types in San Jose and typically see the most wear. Our local pros are familiar with the exterior materials found across the metro.
What radon level requires mitigation?
The EPA recommends mitigation at levels of 4 pCi/L or higher. Consider mitigation at 2–4 pCi/L as there is no truly safe level of radon exposure.
How much does radon mitigation cost?
Most residential mitigation systems cost $800–$2,500 installed, depending on house construction and foundation type. This one-time cost provides lifetime protection.
How does a radon mitigation system work?
Sub-slab depressurization (SSD) is the most common method — a fan creates negative pressure beneath the slab that draws radon away from the home before it can enter, exhausting it harmlessly above the roofline.
Will a mitigation system affect my heating and cooling bills?
Sub-slab depressurization removes a small amount of air from beneath the slab, not from inside the home. The impact on energy costs is negligible.

Other Services in San Jose

Basement WaterproofingCrawl Space EncapsulationMold Remediation

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Get a free quote from a local pro. We serve Willow Glen, Rose Garden, Almaden Valley, and all surrounding San Jose communities.

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