Radon Disclosure Assessment Form

Radon Disclosure Assessment Form

If the seller has disclosed previous radon test results at or above the Action Level of 4.0 picoCuries per liter (pCi/l), we do not recommend further testing prior to mitigation.  The results from that test are sufficient to demonstrate that the home has the potential to have high radon levels, and we recommend mitigation to ensure that the radon levels are maintained at an acceptable level.

If the seller has disclosed results from previous tests and the results have all been below the Action Level,  the buyer should always consider having another test performed on their behalf, but if the answer to any of the questions below is ‘yes’ the buyer should absolutely have another test performed.

1. Was the test performed with a passive test kit?       Yes       No
2. Was test was performed by the homeowner or resident (not by a state measurement licensee)?       Yes       No
3. Is the test more than two years old?       Yes       No
4. Is the copy of the test report incomplete or unavailable?       Yes       No
5. Was the test performed in a different season, or when a different system would be used to heat or cool the home?       Yes       No
6. Have exterior doors or windows been replaced or upgraded since the test was performed?       Yes       No
7. Has the HVAC system or roof been repaired or replaced since the test?       Yes       No
8. Has there been an addition or other substantial construction to the property since the test was performed?       Yes       No
9. Is there evidence of passive mitigation efforts (sealed sump pit, covered gravel crawl), but no active mitigation system?       Yes       No
10. Questions for homes with active mitigation systems:
1. Does the home have a non-functioning active mitigation system?       Yes       No
1. If the answer is yes, a mitigator must be called out to fix the system prior to any test being performed.  The state prohibits testing a home with a non-functioning mitigation system.
2. If a sump or crawlspace has been professionally sealed by a radon mitigator as part of an active mitigation system, is there any evidence that the seal has been compromised?       Yes       No
   

Any of the above conditions can affect the radon levels found in the home and the buyer should have a test performed on their behalf during their inspection process.

If the result of a test performed for the buyer varies from the result of a previous test disclosed by the seller, understand that variances do occasionally occur.  The above items should be considered as potential reasons for the difference, but radon levels naturally fluctuate and any given home may experience a larger than usual variation in radon levels due to weather, normal settling of the foundation(s), or other factors that cannot be anticipated or adjusted for. 

The purpose of a short-term test is to determine whether or not the home has the potential to test at or above 4.0pCi/l over the course of a year.  In a case where two test results performed by measurement licensees in accordance with state standards are in conflict with one another, it is proper to say that if the result of one test is at or above 4.0pCi/l, the home has demonstrated the potential for high radon levels and mitigation is recommended.