Mold clearance testing in Utah
An independent check after mold cleanup, by an inspector who didn't do the work and doesn't sell remediation.
What post-remediation verification is
Post-remediation verification, often called a clearance test, confirms that a mold cleanup actually worked before you close up the walls or make the final payment. The ANSI/IICRC S520 Standard for Professional Mold Remediation lists post-remediation verification as part of professional remediation, and the EPA's brief guide to mold and moisture notes that surface sampling may be useful to determine whether an area has been adequately cleaned or remediated.
Why it has to be independent
The company that did the cleanup has a reason to call it finished, the same way a company that sells remediation has a reason to find mold. An independent inspector has neither. Clearance requests on this site go only to inspectors who never sell or perform remediation and are never paid for it. They never go to a remediation company.
What the inspector checks
The EPA's remediation guidance sets out what "done" looks like, and a clearance inspection checks each part:
- Visual inspection. No visible mold, mold-damaged materials or moldy odors should remain in the work area.
- Moisture. The EPA says the water or moisture problem must be completely fixed. The inspector takes moisture readings on the materials that were wet.
- Air and surface samples, compared with outdoor air. If samples are taken, the EPA's guidance says the kinds and concentrations of mold indoors should be similar to those found outside. That's why the inspector takes an outdoor baseline sample the same day.
One honest limit: the CDC notes there are no set standards for what is and isn't an acceptable amount of mold in a home, and it doesn't recommend mold testing as a way to judge health risk. A clearance test answers a narrower question: did this cleanup bring the work area back in line with normal background? If you have health concerns, talk to a doctor.
When to schedule it
- After the remediation company says the work is finished and the area is dry.
- Before walls, insulation or flooring go back in, so a spot that doesn't pass can be cleaned again without tearing out new work. Ask your remediator to plan for the test.
- Before you make the final payment.
What it costs
Our mold testing cost guide puts post-remediation clearance testing at $250 to $600, a typical national range. The number of samples is the biggest driver. Treat it as its own line item, separate from the remediation quote. More on remediation pricing is in what mold remediation costs.
Related pages
Clearance testing questions
What is a mold clearance test?
It's an independent check after mold remediation that the job worked: the moisture problem is fixed, no visible mold or moldy materials remain, and any air or surface samples look like normal background rather than a problem area.
Can the remediation company do its own clearance test?
It shouldn't. A company grading its own cleanup has a reason to call it finished. Have the clearance test done by an independent inspector who didn't do the work and doesn't sell remediation.
What happens if the clearance test fails?
The area usually needs more cleaning or drying, then a retest. Before work starts, ask your remediator to put in writing what happens if the area doesn't pass, including who pays for the extra cleaning and the retest.
How much does a clearance test cost?
Our mold testing cost guide puts post-remediation clearance testing at $250 to $600, a typical national range. The price depends mostly on how many samples are taken.
Request a clearance test
Tell us about your home and we'll connect you with an independent inspector for a clearance test. You'll get a clear price before anything is scheduled.