Short answer: Not always. Michigan does not license mold testers or remediators, and no state rule requires a test before cleanup. Testing is worth it when you smell mold but cannot see it, after water damage you cannot fully trace, when someone in the home has health concerns, or when you need documentation. If you can already see mold, finding the moisture source matters more than a lab result.
What Mold Testing Tells You
- Air samples compare indoor spore levels with an outdoor sample. Higher levels inside point to hidden growth.
- Surface samples identify the type of mold on a visible patch.
- Clearance samples taken after remediation help confirm the area is back to normal.
What a Mold Inspection Tells You
Testing shows that a problem exists. An inspection shows where it is and why. Inspectors use moisture meters and infrared cameras to find wet areas inside walls, under floors, and around windows, pipes, and roof lines. Mold needs moisture to grow, so fixing that moisture is what keeps it from coming back.
When Testing Is Worth It
- A musty smell with no visible mold
- A past leak or flood that was dried without moisture readings
- Allergy or breathing symptoms that get worse at home
- A home sale, purchase, or rental that needs documentation
- Proof the space is clear after remediation
When You Can Skip Straight to Remediation
If mold is visible and you know where the water came from, testing often adds cost without changing the plan. The EPA recommends following its professional remediation guidance when mold covers more than about 10 square feet. At that size, call a professional rather than cleaning it yourself.
Can One Company Test and Remediate in Michigan?
Yes. Michigan does not prohibit it. Some homeowners still prefer an independent company for the final clearance test. A good remediation contractor will support that choice.
How Aaron Builders Handles Mold
Aaron Builders offers mold testing, inspection, mold remediation, and post-remediation clearance across Southeast Michigan. We find the moisture first, then seal off the area, clean the air with HEPA filtration, remove damaged materials, and treat the remaining surfaces with EPA-registered antimicrobial products. Clearance may include third-party testing. Then we repair the drywall, flooring, or trim we removed. If the mold started with a leak, see emergency water removal.
We have restored Southeast Michigan properties since 1979. When mold follows a covered water loss, we work directly with your insurance company, and our repairs carry a 5-year workmanship warranty.
Frequently Asked Questions
How long does mold testing take?
The on-site visit is usually short. Lab results take longer and vary by lab. We will tell you the expected timing when we schedule.
Will mold come back after remediation?
It can, if the moisture is not fixed. That is why we find and address the water source as part of every job.
Should I bleach mold myself?
Bleach does not fix the moisture behind the growth. For anything larger than a small surface spot, call a professional.
Smell mold but can’t find it? Call (248) 957-9660 to schedule mold testing.