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Radon Testing Services

Radon is a naturally occurring, radioactive gas that forms in soil and rock and can enter buildings through foundations and openings. It is invisible and odorless, making it impossible to detect without testing. Elevated radon levels indoors are a known health concern, which is why professional measurement is the only way to understand whether radon is present and at what concentration.
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What Radon Is

Radon develops below ground and moves through soil under natural pressure differences. Once it reaches a structure, it follows the path of least resistance and accumulates in enclosed areas such as basements, ground level rooms, and lower floors.
Concentrations can fluctuate based on building design, foundation integrity, ventilation patterns, and seasonal conditions. Because radon behavior is influenced by environmental and structural factors, its presence and concentration cannot be reliably predicted based on location, age of the building, or neighboring properties.

Why Testing Matters

Radon exposure is a long-term issue that occurs silently over time. The Environmental Protection Agency (EPA) identifies radon as the second leading cause of lung cancer in the United States, after smoking. Risk increases with both concentration and duration of exposure, particularly in spaces where occupants spend extended periods indoors. Radon levels can vary significantly within the same building and may change throughout the year.
There are no immediate symptoms or visible indicators of elevated levels. The EPA action level of 4.0 picocuries per liter (pCi/L) is used as a benchmark for risk, but only professional testing can determine whether levels approach or exceed this threshold and whether further evaluation or mitigation should be considered.

Signs You Should Test for Radon

Radon has no smell or visible warning signs. Testing becomes necessary based on property conditions and timing, not symptoms alone.

If any of this applies to you, consider Radon testing

Geographic Risk

If your property sits in an area known for elevated radon levels.

Real Estate Transaction

You are buying or selling a home, where radon testing is often required.

First-Time Testing

The property has never been tested for radon.

Building Features

Your building includes a basement, crawlspace, or slab foundation.

Recent Renovations

You recently sealed, insulated, or renovated the property.

Outdated Test

It has been more than two years since the last radon home inspection.

Radon levels can change over time. Proactive radon inspections provide the only reliable way to confirm safety

What We Test For

RADON LEVELS & ENTRY SOURCES

Our radon testing goes beyond a single reading. We measure radon levels and identify how the gas enters your building so results lead to clear next steps.

1. Radon Concentration

We measure radon levels in picocuries per liter (pCi/L) using continuous, industry-approved monitors. Results compare directly to the EPA action level of 4.0 pCi/L, providing a clear safety benchmark for the property.

2. Contributing Conditions

We evaluate conditions that allow radon to build indoors. This includes pressure differences between soil and living spaces, basement or lower-level accumulation, and building features that increase radon draw into the structure.

3. Structural Entry Points

We identify common radon entry paths such as cracks in slabs and foundations, sump pits, crawlspaces, construction joints, and utility penetrations. When applicable, we also consider waterborne radon sources.

Our Radon Testing Methods

(SHORT-TERM & LONG-TERM)

We follow EPA, American National Standards Institute (ANSI) and the American Association of Radon Scientists and Technologists (AARST) guidelines to provide accurate radon results based on your needs. Each method serves a different purpose, and correct placement and handling matter as much as the device itself. We manage the full process to ensure reliable findings.
Short-Term Testing (48–96 hours)

Short-term testing works well for real estate transactions, initial screening, or time-sensitive decisions. We use continuous radon monitors that record hourly readings over a two-to-four-day period. This method provides a clear snapshot of current radon levels and helps determine whether further action is needed.

Long-Term Testing (90+ days)

Long-term testing offers the most accurate picture of average radon exposure. By measuring levels over several months, this method accounts for daily and seasonal changes that short tests may miss. It is recommended when long-term occupancy safety is the priority.

Both methods follow strict placement rules, closed-building conditions, and device calibration checks. We handle deployment, retrieval, and analysis, then deliver a clear report that explains results and next steps based on measured conditions.

Radon Testing Process

(STEP-BY-STEP)
Our radon testing process follows a clear, controlled workflow. Each step ensures accurate measurement and reliable results that meet EPA and ANSI/AARST standards.
On-Site Property Assessment

A certified technician reviews the building layout, lowest occupied levels, foundation type, and potential radon entry points. This step determines proper monitor placement.

Controlled Monitoring Period

The device records radon levels at regular intervals. Short-term tests typically run 48-96 hours, while long-term tests remain in place for extended monitoring.

Final Report & Guidance

You receive a clear report with measured results, data graphs, and interpretation. If levels exceed guidelines, we outline recommended next steps so you can address radon concerns with confidence.

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Scheduling & Pre-Test Instructions

We confirm the test type, property details, and timing. You receive clear closed-building instructions so conditions remain stable before testing begins.

Certified Device Placement

We place calibrated radon monitors in the correct location, typically the lowest livable level. Proper placement ensures valid, representative data collection.

Professional Retrieval & Data Analysis

We retrieve the device and analyze the full data set. Results are calculated in picocuries per liter (pCi/L) and compared to the EPA action level of 4.0 pCi/L.

Residential Radon Testing

Radon presents the greatest risk in living spaces where long-term exposure occurs. Homes, apartments, townhomes, and rental units can contain elevated radon levels without any visible signs.
We provide certified residential radon testing that delivers accurate measurements, so health risks are not left to guesswork.
Whether you are buying or selling a home, addressing a concern, or testing for the first time, our results support informed decisions that protect occupants and property.

Commercial Radon Testing

Commercial buildings, schools, offices, and multi-unit properties can accumulate radon, especially in lower-level or below-grade spaces. Elevated radon levels may exist without visible signs, creating potential health concerns for employees, tenants, and visitors.
We provide commercial radon testing that aligns with regulatory expectations and professional standards. Our certified process delivers accurate measurements suitable for compliance documentation, risk management, and due diligence across commercial environments.
You receive validated radon readings presented in a clear report. Results include guidance to help maintain a safe indoor environment and support responsible building operations. Commercial radon testing provides the data needed to address exposure concerns and protect occupants.

Who We Serve

Radon can affect any type of building. We provide certified radon testing services tailored to different property uses and responsibilities, delivering clear, reliable results that support health, safety, and informed decision-making.
We Serve the Following

Homeowners & Residents

Understand radon levels in primary residences, secondary homes, and living spaces where long-term exposure may occur.

Property Managers & Landlords

Support duty-of-care obligations for rental units, multi-family buildings, and managed properties with documented testing.

Schools & Healthcare

Evaluate radon conditions in facilities that serve sensitive populations, including patients, children, and staff.

Real Estate Professionals

Provide independent radon testing to support real estate transactions for buyers, sellers, and agents.

Educational & Childcare Facilities

Assess radon levels in schools, daycares, and campus buildings to help protect students and occupants.

As a radon testing company, each assessment is adapted to the building type, occupancy patterns, and intended use.

Benefits of

Professional Radon Testing

Professional radon testing provides more than a single measurement. It delivers verified information that supports health, safety, and informed decisions when radon risk is unknown.
Early Detection & Prevention

Certified testing identifies elevated radon levels early, before long-term exposure increases health risk. Early detection allows timely action rather than delayed response.

Documented, Defensible Results

You receive third-party data backed by certified technicians and accepted standards. These results support real estate transactions, compliance needs, and formal documentation.

Clear Safety Decisions

Testing shows whether radon levels fall within EPA guidelines and whether mitigation is necessary. Clear data removes guesswork from the next steps.

Confidence for Occupants & Owners

Reliable testing helps protect families, tenants, employees, and visitors. Verified results provide reassurance that indoor air risks are understood and addressed.

Schedule Your Radon Test
Radon exposure carries serious health risks. We provide certified radon testing with accurate measurement and clear results. Schedule your radon test now to protect your property, meet safety expectations, and address radon concerns without delay.
Schedule Your Radon Test Now

Why Choose Us

FOR YOUR LEAD SAFE CLEARANCE TESTING

When an invisible hazard must be measured, accuracy and standards matter. Our clients rely on us for professional radon testing services because our work is grounded in nationally recognized protocols, certified expertise, and precise instrumentation. Every assessment is performed to produce defensible results that can be trusted for health decisions, real estate transactions, and long-term property planning.
Certified Specialists

Our technicians are certified by the National Radon Proficiency Program (NRPP) and National Radon Safety Board (NRSB), demonstrating verified training and ongoing compliance with professional requirements.

Compliant Methodology

All testing follows EPA and ANSI/AARST standards to ensure proper device placement, test duration, and defensible results.

Advanced Technology

We use calibrated continuous radon monitors that collect detailed, time-weighted data rather than single snapshot readings.

Actionable Reporting

You receive clear, documented radon reports with results and guidance aligned with the EPA 4.0 pCi/L action level.

FAQs

Frequently Asked Questions

What is a radon inspection?
A radon inspection measures indoor radon levels using certified monitoring devices placed in the building under controlled conditions.
Radon testing requirements vary by location and circumstance. Testing is commonly required during real estate transactions and by some lenders or agencies.
The EPA action level is 4.0 pCi/L. Results at or above this level indicate increased health risk and may warrant mitigation.
Professional radon testing is conducted by NRPP or NRSB certified professionals using approved methods and calibrated devices.
Radon testing provides buyers and sellers with objective data about indoor radon levels to support informed purchasing decisions.
Short-term testing provides a snapshot of radon levels over a few days. Long-term testing measures average exposure across seasonal and environmental changes.
Short-term tests run 48–96 hours. Long-term tests measure average exposure over 90 days or more.
Yes. Radon levels can fluctuate due to weather, ventilation patterns, building use, and seasonal conditions.
No. Radon can affect any occupied level of a building, particularly lower floors and ground-contact areas.
Yes. Construction changes, sealing, and renovations can alter airflow and increase radon accumulation.
Testing results help determine whether mitigation is recommended and guide appropriate next steps to reduce exposure safely.

Service Areas

We offer radon testing NYC services across all boroughs and nearby counties.
Our team provides fast scheduling for Manhattan, Brooklyn, Queens, the Bronx, and Staten Island, giving property owners convenient access to reliable testing and clear reporting.
We also assist nearby counties that depend on accurate results for safe decision-making.
Whether you manage a single unit or multiple buildings, our inspectors reach your location quickly and complete each inspection with precision, delivering trusted lead paint inspection NYC when you need it most.
Schedule Your Radon Test
Radon exposure carries serious health risks. We provide certified radon testing with accurate measurement and clear results. Schedule your radon test now to protect your property, meet safety expectations, and address radon concerns without delay.
Schedule Your Radon Test Now