Did the remediation work? What a proper finish looks like
The EPA's finish line is plain: the moisture problem is fixed, no visible mold or mold damaged material, no moldy odor, and no signs of water damage or new growth on a return visit. Check those before final payment.
What is probably happening
- A proper job looked like this: source fixed, area contained in polyethylene sheeting under negative pressure, moldy porous material removed and bagged, hard surfaces cleaned, everything HEPA vacuumed, then verified.
- If the crew worked with no sheeting, no negative air machine and no HEPA vacuum on a job over about 10 square feet, the house may now have spores it did not have before.
- Verification by the remediator's own company is a receipt, not a verification.
Do this in the next five minutes
- Walk the area with a flashlight before the containment comes down. Look for staining, fuzz, or wet material left in place.
- Smell it. A moldy odor after remediation means something was missed.
- Ask for the moisture readings on the materials left in place, in writing.
- In Texas, ask for the Certificate of Mold Damage Remediation. The post remediation assessment must be by a consultant who did not write the protocol.
- Hold final payment until the written verification is in your hand.
Do not
- Do not accept an air test as the only proof. The EPA says surface sampling can help verify a cleaned area, but there is no airborne standard to pass.
- Do not accept 'encapsulated' as removed. The EPA guide's completion criteria say mold damaged materials should not be present.
- Do not let them take the containment down before you have looked inside it.
Who to call
An independent mold assessor for the verification
The assessor who wrote the scope, or a third party, confirms the scope was met. The remediator grading its own work is the conflict the state laws were written to stop.
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What it should cost
$303 to $1,045
Mold inspection, national average $671. Homes under 4,000 sq ft typically $300 to $400
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.
- Is the moisture source fixed, and can I see the reading that proves the material is dry?
- What was removed, what was cleaned, and where did the waste go?
- Was negative air run, and can I see a photo of the containment?
- Who signs the verification, and are they independent of the remediator?
- What is the warranty if it comes back, and what voids it?
End the call if
- No written verification at all.
- The remediator's own air test used as the clearance.
- Visible staining or a moldy smell left behind with 'it is dead, it is fine'. The EPA says dead mold still causes allergic reactions.