Radon Testing Delaware OH | RC202 Licensed | 48-Hour Results

Delaware County sits inside one of the highest-radon regions in the United States. The U.S. EPA classifies all of Ohio as Zone 1 — meaning predicted average indoor radon levels exceed 4.0 pCi/L, the action threshold where mitigation is recommended. In Delaware County specifically, the Ohio Department of Health has documented homes testing well above 10 pCi/L, with some basements registering 20+ pCi/L. If you live here and you've never tested, you're guessing.

Radon Eliminator is Ohio's licensed radon authority (Ohio Mitigation License RC202) providing Radon Testing Delaware OH property owners can rely on for real-estate transactions, school and commercial compliance, and peace of mind. We deliver EPA-aligned testing protocols, 48-hour turnaround on continuous monitor tests, and clearly priced packages — no "call for pricing" runaround.

Whether your home inspector flagged elevated radon mid-transaction in Glenross, your buyer is demanding a test before closing on a property near Olentangy River, or you manage an apartment complex off US-23 that needs documented compliance, we test it right the first time. Call (614) 333-0233 to schedule, or request a quote online.

Most local companies that "also do radon" are HVAC contractors or basement waterproofers with a side service. We are different. Radon is our entire business. Here's what that means for you in Delaware:

• Ohio Radon Mitigation License RC202 — published, verifiable, and required for legal mitigation work in this state. We are not subcontractors. We are the licensed pros.
• Closing-deadline scheduling — if your purchase agreement closes in 10 days, we work backwards from that date. We won't blow up your deal.
• Continuous radon monitors (CRMs) — EPA-aligned electronic devices that record hourly readings over 48 hours, providing tamper-resistant data accepted by lenders, attorneys, and underwriters.
• Transparent flat-rate pricing — residential testing in Delaware starts at $150. Commercial multi-point testing is quoted per device count, not per guess.
• Multi-vertical depth — we test residential homes, commercial buildings, schools, and apartment complexes. Most local competitors legally cannot service the latter three.
• Home inspector referral program — if your inspector referred us, ask about our Special Offer at scheduling.

This is the best Radon Testing Delaware offers because it's the only Delaware testing service built specifically around real-estate timelines and Ohio code.

Every Delaware property is different. A 1920s farmhouse off Sandusky Street has different airflow than a new build in Communities at Glenross or a four-story office near the Delaware County Courthouse. Our testing services are calibrated to the property type and the reason for testing.

The most common reason Delaware homeowners call us. A real-estate transaction radon test must be conducted under closed-house conditions for a minimum of 48 hours using a device that records hourly readings. We deploy CRMs the same day or next day, retrieve them 48 hours later, and deliver a signed, time-stamped report formatted for your title company and lender. If results exceed 4.0 pCi/L, we provide a mitigation quote on the spot so your contract addendum can move forward without delay.

Not in a transaction — just want to know? Smart. Radon is the #1 cause of lung cancer in non-smokers and accounts for an estimated 21,000 deaths annually in the U.S. (EPA). For families with finished basements, kids' bedrooms below grade, or older homes with stone foundations common in central Delaware, baseline testing is the only way to know what you're breathing. Same flat-rate pricing, same EPA-aligned protocols.

Apartment owners, school administrators, and commercial landlords in Delaware County have legal and ethical obligations to provide safe indoor air. We perform multi-point grid testing per EPA Protocol EPA 402-R-92-014 (commercial) and ANSI/AARST MA-MFLB (multi-family). Each unit, classroom, or zone is tested individually. You receive a full compliance report ready for board review, insurance audit, or tenant disclosure.

If a mitigation system was installed — by us or anyone else — you should verify it's working with a follow-up test 24 hours to 30 days after activation. Ohio code (OAC 3701-69) requires it. We provide affordable Radon Testing Delaware property owners use to confirm their system has dropped levels below 4.0 pCi/L and ideally below 2.0.

We've engineered our process around one thing: getting you defensible, accurate results without delays. Here's how a typical Radon Testing Delaware OH project runs:

1. Schedule (same-day or next-day): Call (614) 333-0233 or submit our online form. We confirm property type, square footage, basement/crawlspace configuration, and closing date if applicable.
2. Device Placement: A licensed technician arrives, places a calibrated continuous radon monitor in the lowest livable level of the home (per EPA protocol), and reviews closed-house conditions with the occupant: keep windows and exterior doors shut except for normal entry/exit.
3. 48-Hour Measurement: The CRM records hourly radon concentration, temperature, humidity, and tilt data. Tilt sensors detect tampering — important for transactional credibility.
4. Retrieval and Analysis: We return at the 48-hour mark, download the data, and analyze the readings against EPA and Ohio standards.
5. Report Delivery: You receive a signed PDF report within 24 hours of retrieval — typically same-day. If mitigation is needed, you get a flat-rate quote attached.

Delaware sits on glacial till and limestone bedrock — a geological combination that produces some of the highest soil radon concentrations in Ohio. The uranium in this bedrock decays into radium, which decays into radon gas. That gas migrates up through soil and enters homes through foundation cracks, sump pits, crawlspace vents, and slab penetrations.

We've tested homes in nearly every Delaware neighborhood and subdivision: Communities at Glenross, The Lakes of Alum Creek, Liberty Township, Berlin Township, Powell-adjacent corridors near Polaris, Sawmill Parkway properties, downtown historic district homes near Ohio Wesleyan University, and rural acreage off State Route 36 and US-42. Patterns we see locally:

• Newer construction in Glenross and surrounding subdivisions often tests between 4–8 pCi/L due to tight building envelopes that trap radon.
• Older homes near downtown Delaware and the Ohio Wesleyan area frequently test in the 6–15 pCi/L range — stone and block foundations are highly permeable to soil gas.
• Rural properties between Delaware and Sunbury, particularly on private wells, can show elevated levels in both air and water.
• Properties near Alum Creek and the Olentangy River corridor often have higher water tables, which increases sub-slab pressure and radon entry.

If you're searching "Radon Testing near me" from a Delaware address, the answer matters more here than in most of the country. This is not a market where you can assume your neighbor's clean test means your home is safe — readings can vary by 10+ pCi/L between adjacent homes.

We publish pricing because you deserve to know before you call. This is professional Radon Testing Delaware OH residents can budget for, not a sales-call funnel:

• Residential 48-hour CRM test: Starting at $150
• Real-estate transaction test with same-day report: Starting at $175
• Post-mitigation verification test: Starting at $125
• Commercial / multi-family / school testing: Quoted per device count after a brief property review

Mitigation system pricing — if your test comes back elevated — typically ranges from $1,400 to $2,200 for a standard residential active soil depressurization (ASD) system in Delaware. We give you the flat number before any work begins.