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What is wrong? › Mold

Plan it

Air testing before anything else: this is usually the sales pitch, not the fix

The EPA says that when visible mold is present, sampling is unnecessary. The CDC does not recommend mold testing at all. Nobody is harmed by waiting a week to not buy a test.

What is probably happening

  • The test is a lead generator. A high spore count is easy to produce and there is no number it can be compared against, because the EPA has set no limits for airborne mold.
  • If you can see mold, you already have the answer the test would give you. Clean it, or have it removed.
  • If you cannot see mold, what you need is someone to find the moisture with a meter, not a spore count.

Do this in the next five minutes

  1. Ask the company one question: does your company also do the removal? If yes, decline the test.
  2. If you can see the mold, measure it. Under about 10 square feet on a dry surface is a DIY job per the EPA.
  3. If you cannot see it but smell it, go back and pick 'musty smell'. That path gets you a moisture inspection, not a test.
  4. If you truly want a sample (for a lawsuit, a landlord dispute, or a doctor's request), hire an independent industrial hygienist who does not remediate.

Do not

  • Do not buy a test that will be read by the company that quotes the removal.
  • Do not accept 'toxic mold' or 'black mold' on a report as a reason to pay more. CDC: you do not need to know the type of mold.
  • Do not accept a 'pass' or 'fail' against a spore count. The EPA states no federal limits exist, so any threshold on the report is the company's own.

Who to call

An independent mold assessor, only if you need a written scope

An assessor who does not remediate has no reason to inflate the finding. In Texas and New York the assessor and remediator on the same job must be different companies by law. In Florida the same company cannot do both within 12 months.

Get a free shortlistThe seven questions for this trade

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What it should cost

$250 to $350

A basic air test, up to $700 for extensive testing. A full inspection averages $671. Compare that with $500 to $1,000 to simply remediate a bathroom

Source: Angi, mold inspection cost, July 2026. View source

National published range, not a quote for your job. The full cost table for this trade is on the mold page.

Ask this contractor, on the phone, before anyone comes out

Tap each one as you ask it.

  • Does your company also do mold removal? Will you bid on the removal here?
  • What standard will you compare the result to, since the EPA has set none?
  • Will you take moisture readings, or only air samples?
  • What will the test tell me that looking at the wall does not?

End the call if

  • Free or cheap test, then a large removal quote from the same truck.
  • A report that names a species and a 'danger level' with no lab accreditation named.
  • Pressure to sign for removal on the day the results come back.
Where this comes from
Not my problem, tap through insteadEvery mold answer
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