Call most mold companies and ask for a test, and they'll happily sell you one. Call us and ask for a test, and we'll tell you no. That answer costs us money, and we give it anyway - because the way mold testing usually gets sold in this industry is a racket, and we'd rather explain the racket than participate in it.

Here's our reasoning, and - because the answer isn't "testing is always useless" - the four situations where paying for an independent mold test genuinely makes sense.

The conflict of interest, explained plainly

Think about what's being sold. A company comes to your house, runs a test, and then tells you whether you need to buy their remediation service. The person interpreting the results is the person who profits from one of the two possible answers.

That doesn't make every tester-remediator crooked. But it stacks the deck, and you have no way to know how much. A borderline reading becomes a "concerning" reading. A closet problem becomes a whole-room problem. You can't audit any of it, because the same company controls the test, the interpretation, and the invoice.

So we drew a hard line: we remediate mold, and we do not test for it. Not as an add-on, not as a courtesy, not ever. When testing is genuinely needed, it should come from a licensed, independent professional who has nothing to gain from what the results say. We hold no testing certifications and we will never pretend otherwise.

What we do instead

We come look - for free. Most of the time, an experienced eye plus a moisture meter answers the question that matters. Visible growth on drywall, a musty smell with a wet reading behind the wall, staining spreading from a known leak - that's mold, and no lab report changes what happens next.

In the rare case we're genuinely not sure what we're looking at, we say exactly that, and we tell you to get it tested by an independent professional before anyone sells you remediation - including us. That has happened, and it will happen again. We'd rather lose a job than guess with your house.

Why testing usually doesn't change anything

Here's the part the testing industry doesn't lead with: if you can already see mold, the test result doesn't change the fix.

The remediation plan for visible mold is the same regardless of what species a lab says it is: fix the moisture source, contain the area, remove the affected material safely, clean and dry what stays, and verify it's dry enough that mold can't come back. Black mold, green mold, mold with a scary Latin name - same containment, same removal, same standards. We handle every job with the same protocols precisely so the species question doesn't matter.

So when someone with visible mold pays several hundred dollars for testing, they've usually bought a document that says "you have mold" - which they knew - followed by the exact same remediation scope they'd have gotten anyway. That's several hundred dollars that could have gone toward actually fixing the problem.

The four times you actually should get a mold test

Testing isn't worthless. It's a tool with a narrow, real set of uses - and in these four situations, an independent test is money well spent:

Symptoms with nothing visible. Someone in the house has allergy-like symptoms that improve when they leave home, but there's no visible growth, no musty smell you can pin down, and no moisture source anyone can find. Air sampling by an independent hygienist can tell you whether indoor mold is even the problem - before anyone starts opening walls on a hunch. (Not sure your symptoms fit the pattern? We wrote up the early warning signs most homeowners miss.)
Clearance after a big remediation. On larger jobs, third-party clearance testing after the work verifies the containment did its job and the air in the work zone is back to normal. We welcome this on our own jobs - it's independent verification of our work, and that's exactly the point. The company that did the remediation should not be the one grading it.
A real-estate deal or a landlord-tenant dispute. When money or a legal disagreement rides on the answer, "the remediation guy said it's fine" convinces nobody. Neutral, documented results from an independent tester protect both sides - whichever side you're on.
Your doctor asks for it. If someone in the home is immunocompromised, has serious respiratory disease, or a physician specifically wants to know what's present in the environment, that's a medical call and it outranks anything we'd say. Get the test.

How to pick an independent tester

If you're in one of those four situations, three things to check before you hire:

They don't sell remediation. This is the whole ballgame. If the tester also removes mold, you're back to the original conflict of interest with extra steps.
They're licensed and they put results in writing. A real report with lab results attached - not a verbal "yeah, you've got some mold" and a quote.
They'll explain what the numbers mean for your situation - indoor versus outdoor comparisons, what's normal background, what actually warrants action. A good tester talks you out of panic as often as into action.

The honest bottom line

If you can see mold or smell it and there's a moisture problem behind it, skip the test and put that money toward fixing it - the result wouldn't change the plan. If you're in one of the four situations above, get an independent test from someone with no stake in the answer, and we'll gladly work from their results.

Either way, the look is free. We'll tell you what we see, what we'd do about it, and what we wouldn't do - and if the honest answer is "this doesn't need us," you'll get that answer too. That's the standard on every mold remediation call we take, and it's not changing.

Why We Don't Test for Mold (and When You Actually Should)