Clearance testing is the step that proves the remediation worked. After the mould is removed and before anything is rebuilt, samples verify the area is genuinely clean rather than simply looking clean. It is also the step most commonly missing from a cheap quote.
Get your emergency assessment started
The comparison against outdoor air is the important part. Spores exist everywhere, so the question is never “are there spores” but “is the level inside consistent with the level outside”.
A remediation quote that ends at removal is cheaper because it stops before the part that verifies the work. You have no evidence anything was achieved, and no baseline if the problem returns in six months.
This matters more in Arizona than in states with a mould licence. With no state credential to check, a written clearance result is one of the few objective proofs a homeowner can actually hold.
Ask any contractor, in writing, whether clearance testing is included and who performs it.
Ideally not the same company that did the removal. An independent hygienist or testing lab has no interest in the result, which is exactly what makes the result worth something.
On straightforward residential jobs, in-house verification is common and reasonable. Where the stakes are higher — a large insurance claim, a property sale, a tenant dispute, a health complaint — independent clearance is the stronger position and we will tell you so.
Get answers to common questions about our restoration services
It is typically billed like an inspection with sampling, commonly in the $450 to $850 range in the Phoenix market depending on how many samples the area requires.
Laboratory turnaround is usually two to five business days. Reconstruction should not begin until the result is back.
The area is re-cleaned and re-tested. On a properly scoped job this is uncommon, but it is exactly the scenario clearance testing exists to catch — before it is sealed behind new drywall.
No. Arizona has no statute requiring it and no dedicated mould licence. It is a professional standard rather than a legal one, which is why it is worth asking about explicitly.
Contact Western Skies Restoration for immediate assistance or to schedule your free property damage assessment. We respond to all inquiries within 30 minutes during business hours.
Fill out the form below and we’ll contact you immediately to schedule your assessment.