Radon testing
Radon can kill a sale. Test before it shows up at the closing table.
A radon result raised late in a transaction turns into a price concession, a delayed closing, or a buyer who walks. Testing early converts an unknown into a document you control.
In contract or approaching a closing date? Call (718) 231-8399 to schedule testing now.
- NY ELAP accredited laboratoryNew York State Dept. of Health Environmental Laboratory Approval Program
- EPA licensed inspectorsLead inspection and sampling performed by EPA licensed personnel
- NYC-certified inspectionsLead, asbestos and indoor air quality work performed to NYC agency standards
- In-house chain of custodySampling, analysis and reporting under one accredited roof
Certificate numbers are published as issued by each accrediting body.
Why owners test
Three moments where a radon report protects you.
Real estate transactions
Buyers, lenders and their attorneys increasingly ask. A completed test on file keeps the deal moving instead of stalling it at inspection.
Basement and cellar conversions
Radon accumulates at the lowest levels. Before you put occupants in that space, know the number.
Occupant concern and duty of care
Radon is invisible. Once a concern is raised, an untested building is a documented gap in ownership's response.
The point
A radon test is cheap. A radon surprise at the closing table is not.
Asset needed: Published radon pricing (per test / per additional location) belongs in this box. It was not supplied, so the page directs to a phone quote instead of stating a figure.
Radon FAQ
What building owners and buyers ask us
Radon questions come up fastest when a deal is already in motion. Here are the answers we give most often.
What is radon?
Radon is a naturally occurring radioactive gas produced by the breakdown of uranium in soil and rock. It is colorless, odorless and tasteless, which is why it can only be identified through testing.
How does radon get into a building?
Radon moves up through the ground and enters a building through cracks in slabs and foundation walls, construction joints, gaps around service pipes, sump pits and crawl spaces. It can then accumulate in the lowest occupied levels.
Why is radon a health concern?
Radon is radioactive. Long-term exposure to elevated indoor radon levels is a recognized lung-cancer risk, which is why testing is standard practice in real estate transactions and building due diligence.
Which buildings should be tested?
Any building can have elevated radon regardless of age, construction type or whether neighboring buildings tested low. Lower levels — basements, cellars and ground-floor units — are the priority areas because that is where radon accumulates first.
When should I test?
Before a sale or purchase closes, before converting basement or cellar space to occupied use, and any time an occupant raises a concern. Testing before a transaction is under contract keeps the result from becoming a last-minute negotiating problem.
What happens if the result is elevated?
An elevated result means mitigation should be evaluated. The test result is the starting document: it defines the level, establishes the date of record, and gives you a baseline to demonstrate improvement after mitigation.
How long does a test take?
Radon testing requires the detector to remain in place for a measurement period under controlled conditions in the building. PES will confirm the exact protocol and duration for your building when scheduling.
Who analyzes the results?
PES analyzes samples in its own NY ELAP-accredited laboratory, so your report doesn't wait behind a third-party lab's queue.
Talk to PES
Get the radon number before your buyer does.
Call for scheduling and pricing, or send your building details and a coordinator will call you back.
Professional Environmental Services · Bronx, NY · Serving the Tri-State area since 1991
Request a quote
All major credit cards accepted.