Commercial Radon Services in Delaware, OH — Licensed, Code-Compliant, and Built for Property Owners Who Can't Afford to Get This Wrong

Delaware County sits on Ohio bedrock that produces some of the highest radon readings in the country. The EPA places all of Ohio in Zone 1 — the highest-risk classification — and Delaware County test data routinely shows averages above the 4.0 pCi/L action level. For a single-family home, that's a health problem. For a 40-unit apartment building, a charter school, or a medical office on US-23, it's a liability problem with regulators, tenants, parents, and insurance carriers attached to it.

Radon Eliminator is Ohio's licensed radon authority — Ohio Mitigation License RC202 — and Commercial Radon Services in Delaware OH is the core of what we do. We don't install furnaces. We don't waterproof basements. We mitigate radon, full-time, to code, with documentation your attorney, lender, and property manager can rely on.

Commercial radon work in Ohio is not a scaled-up version of residential work. It requires multi-point pressure field extension testing, larger fan sizing, sealed sub-slab depressurization across expansion joints, and post-mitigation verification that holds up to ANSI/AARST CC-1000 commercial standards. That's the work. That's all we do.

Every commercial property in Delaware has a different footprint, occupancy schedule, and compliance pressure. Our scope is built around that reality, not a one-size-fits-all package.

Under ANSI/AARST MAH-2019, multi-family buildings require ground-contact unit testing in specific ratios — not a single test in the basement. We deploy continuous radon monitors (CRMs) across qualifying units, run the 48-hour to 90-day protocol required for your situation, and deliver a documented report your management company, lender, or HUD inspector can sign off on. Common Delaware clients: properties off Sunbury Road, Polaris-adjacent complexes, and student housing serving Ohio Wesleyan University.

Ohio schools and licensed childcare facilities face escalating scrutiny around indoor air quality. We perform ANSI/AARST MALB-2019 large-building testing across classrooms, gymnasiums, and basement-level rooms, then design mitigation systems sized for HVAC interaction — not retrofitted residential fans bolted onto a commercial slab. Documentation is delivered in a format ready for school board review.

For commercial buildings along US-36, OH-37, and the I-71 corridor, we engineer active soil depressurization (ASD) systems that integrate with existing HVAC, route discharge per code (10 feet above grade, away from operable openings), and include manometers and fan-failure alarms for ongoing compliance. Mitigation systems are warrantied to bring readings below 4.0 pCi/L — and most properties land well under 2.0.

When a commercial sale in Delaware is wobbling on a radon contingency, we move. EPA-aligned 48-hour testing, signed reports, and — if levels are elevated — a written mitigation proposal and installation timeline that lines up with your closing date. We've installed full commercial systems in under 10 business days when the deal demanded it.

Every system we install gets a post-mitigation test 24 hours to 30 days after activation. For properties that want ongoing assurance — schools, assisted living, Class A office — we offer scheduled re-testing every two years per EPA guidance, plus continuous monitoring options with cellular-reporting CRMs.

Here is exactly how a commercial engagement runs from first call to signed-off documentation.

We review building plans, occupancy patterns, prior radon data (if any), and your deadline. For Delaware properties we typically schedule the assessment within 48 hours. You get a written scope, a fixed price, and a calendar.

CRMs are placed per ANSI/AARST protocol — lowest occupied levels, ground-contact units, and any space where occupancy exceeds four hours per day. Tamper-evident placement, chain-of-custody logging, and HVAC condition documentation are all part of the file.

You receive a plain-English report with pCi/L readings, a pass/fail recommendation against 4.0 pCi/L, and — if mitigation is needed — a system design with fan specs, vent routing, sealing scope, and a fixed installation quote. No 'call for pricing' games.

Our crews install to ANSI/AARST CC-1000 and Ohio Department of Health requirements. Sub-slab depressurization, pit excavation, sealed penetrations, properly sized Radonaway or Festa commercial fans, weatherproof exterior runs, manometers, and system labeling. Crews are W-2 employees, not subs.

We retest, deliver a final compliance packet, and register your warranty. The packet includes the Ohio Mitigation License number (RC202), system schematic, fan specs, post-mitigation results, and maintenance instructions — everything a property manager or future buyer will ever ask for.

Delaware County's geology — fractured limestone and shale beneath the Olentangy River corridor — is a textbook radon producer. County-wide averages reported to the Ohio Department of Health have historically run between 4.5 and 6.0 pCi/L, well above the EPA action level. Older neighborhoods like the streets around Mingo Park and the historic district near Sandusky Street tend to show elevated readings due to basement age and slab cracking. Newer commercial construction along Polaris Parkway and the Glenn Highway corridor isn't immune either — tight, energy-efficient envelopes can actually concentrate radon if passive systems aren't designed correctly.

We've mitigated properties from downtown Delaware near the Strand Theatre to commercial sites near the Delaware County Fairgrounds, multi-family buildings off Sunbury Road, and properties bordering Alum Creek State Park. We know which subdivisions sit on the worst geology, which builders installed passive stubs that need activation, and which inspectors agents are using — because we get the referrals.

If you searched Commercial Radon Services near me or top Commercial Radon Services Delaware, you're already inside our service radius. Delaware, Powell, Lewis Center, Sunbury, Galena, and Ostrander are all 30-minute drives from our crew base.

Commercial pricing depends on building square footage, slab configuration, number of suction points, and fan sizing. That said, we publish ranges because you deserve them:

• Commercial Testing (under 10,000 sq ft): $350–$850 depending on monitor count and protocol
• Multi-Family Testing (per building): Quoted per unit ratio per ANSI/AARST MAH-2019
• Single-Point Commercial Mitigation: $2,200–$3,800 installed
• Multi-Point Sub-Slab Depressurization: $4,500–$12,000+ depending on suction points and fan configuration
• School / Large Building Systems: Custom-engineered; quoted after site walk

Every quote is fixed, written, and itemized. No change orders unless scope changes in writing.

• Ohio Mitigation License RC202 — published, verifiable, and the only license that legally authorizes commercial radon mitigation in Ohio
• EPA / ANSI-AARST aligned on every test and every install — CC-1000, MAH-2019, MALB-2019
• Real-estate closing speed — when a Delaware deal needs a system installed inside a 10-day contingency, we deliver
• Multi-vertical experience — apartments, schools, medical, office, retail, single-family
• Transparent, written pricing — no 'call for a quote' runaround
• Lifetime-grade workmanship with documented post-mitigation results below 4.0 pCi/L
• Home inspector referral program with a named Special Offer for Delaware-area inspectors

Browse our radon mitigation system page for technical detail, or see additional Ohio service areas including Columbus, Cleveland, and Canton.