Iowa City Cost Schedule
Iowa City, IA · Johnson & Linn County Corridor Price Schedule
How much does radon testing and sub-slab mitigation cost in Iowa City, IA? In Johnson & Linn County Corridor, initial scopes start at $150 to $595, standard residential work averages $950 to $1,495, and major multi-stage projects run $1,495 to $2,350. Every matched specialist confirms a written price before work begins.
Certified 48-Hour Continuous Radon Monitor (CRM) Test
ICR-01
Digital hourly radon log for Iowa City and Cedar Rapids home sales or baseline verification.
$150 to $225
Typical Iowa City Range
Passive Radon Stack Fan Activation or Fan Swap
ICR-02
Installing an inline radon fan in the attic on a pre-plumbed passive stack or replacing a seized fan.
$425 to $650
Typical Iowa City Range
Standard Active Sub-Slab Depressurization System
ICR-03
Single suction pit, Schedule 40 PVC stack, quiet inline fan, perimeter joint sealing, and post-mitigation test.
$950 to $1,495
Typical Iowa City Range
Dual-Point Sub-Slab or Crawlspace Encapsulation
ICR-04
Multi-zone suction for divided footings or sealed 12-mil cross-laminated crawlspace membrane.
$1,495 to $2,350
Typical Iowa City Range
What Moves a Quote Up or Down
- •Whether your home already has a 3-inch or 4-inch PVC passive radon pipe stubbed into the attic (common in North Liberty and Coralville homes built after 2012)
- •Sub-slab gravel bed permeability (clean washed rock under modern slabs vs. dense glacial clay under older Iowa City homes)
- •Concealed garage-attic routing with roof flashing versus painted exterior sidewall PVC exhaust
- •Whether an open sump basin or dirt-floor crawlspace requires a sealed polycarbonate lid or vapor barrier tie-in
Pricing & Dispatch Questions
Common questions about Iowa City estimates, scheduling, and scope options.
Is Iowa City Radon Mitigation the contractor that installs the system?
No. Iowa City Radon Mitigation is an independent local referral and dispatch service. When you submit a request, we route your project details to one credentialed radon mitigation specialist serving the Iowa City and Cedar Rapids Corridor who contacts you directly.
Why do so many homes in Iowa City and Cedar Rapids fail radon inspections?
All 99 counties in Iowa sit inside EPA Radon Zone 1, with an average indoor reading of 8.5 pCi/L (more than six times the U.S. outdoor average). Uranium-rich glacial till and limestone bedrock beneath Johnson and Linn Counties release radon gas that gets pulled into basements.
My newer North Liberty or Coralville home has a Radon Pipe label in the basement. Is it already mitigated?
Most newer Corridor homes are built with a passive PVC pipe running from under the slab through the roof, but no electric fan in the attic. If your test reads 4.0 pCi/L or higher, a specialist can convert that passive pipe into an active system by installing an inline fan in the attic for $425 to $650.
How low will an active sub-slab system drop my radon level?
Active sub-slab depressurization systems are guaranteed to bring readings below the 4.0 pCi/L EPA action threshold, and most Corridor homes drop between 0.8 and 1.9 pCi/L within 48 hours.
Do you serve Iowa City, Coralville, North Liberty, Cedar Rapids, and Marion?
Yes. We route testing and mitigation requests across Iowa City, Coralville, North Liberty, Tiffin, Solon, Cedar Rapids, Marion, Hiawatha, Waterloo, and Dubuque.