Radon Disclosure Requirements When Selling a Home in Delaware
Radon Disclosure in Delaware Real Estate Transactions
Delaware does not have a standalone radon disclosure statute. However, sellers are generally required under property disclosure laws to reveal known material defects, which includes known elevated radon levels. If you have radon test results showing levels above 4 pCi/L, failing to disclose this could create legal liability after the sale.
What Buyers Should Know
If you are buying a home in Delaware, request a radon test during the inspection period. Delaware is in EPA Zone 2, indicating moderate radon potential. A professional radon test costs $125 to $350 and takes 2 to 7 days.
If the test shows levels above 4 pCi/L, you have several options:
- Ask the seller to install a mitigation system before closing
- Negotiate a price reduction or closing credit to cover mitigation costs
- Accept the results and install mitigation yourself after closing
Radon mitigation in Delaware costs $800 to $2500. A properly installed system reduces radon by 80% to 99%, so elevated radon should not be a reason to walk away from an otherwise good home.
What Sellers Should Know
Proactive radon testing and mitigation can make your home more attractive to buyers. If you know your home has elevated radon and you install mitigation before listing, you can present the post-mitigation test results showing safe levels. This removes radon as a negotiation point and speeds up the closing process.
The cost of mitigation ($800 to $2500) is typically less than the price reduction a buyer would negotiate if they discover elevated radon during inspection.
Find a Certified Radon Professional
Browse NRPP-certified radon professionals in Delaware for testing and mitigation services.
Frequently Asked Questions
Does Delaware require radon disclosure?
Delaware does not have a specific radon disclosure law, but sellers are generally required to disclose known material defects, which can include elevated radon levels.
Do I need a radon test to sell my house in Delaware?
No state law requires testing, but most buyers in EPA Zone 2 areas will request a radon test during the inspection period.
Who pays for radon mitigation in a home sale?
This is negotiable. In most transactions, the seller either installs mitigation before closing or provides a credit to the buyer. The typical cost of mitigation ($800 to $2,500) is small relative to the home price and rarely causes deals to fall through.