Choosing a mold removal company is easier when you know what a real job includes. Many problems start with a company that cleans the surface, collects a payment and leaves the moisture in place.
This guide lists what to ask, what to expect in a written scope and the warning signs of a weak one. It applies to any company, including the one dispatched through this line.
What a real remediation scope includes
- Finding and stopping the moisture source.
- Containment, such as plastic barriers and negative air.
- Removal of affected porous materials, such as drywall and insulation.
- HEPA vacuuming and cleaning of surfaces.
- Drying and a check of moisture readings.
- Verification, with clearance testing when written results are needed.
If the scope does not mention moisture and containment, it is a cleaning, not a remediation. Cleaning without drying often means the growth returns.
Questions to ask
| Question | A good answer |
|---|---|
| Do your crews work to ANSI/IICRC S520? | Yes, and they can explain the steps |
| How do you contain the work area? | Barriers, negative air and HEPA filtration |
| What will you do about the moisture source? | Find it and say who fixes it |
| Who does the clearance testing? | An independent tester, not the crew that did the work |
| Is the scope written, room by room? | Yes, before work starts |
| What is your license status? | A license you can look up |
Check licensing and insurance
Ask whether your state licenses mold work and what license the company holds. You can look up a contractor's license status on the Contractors State License Board website for California. Ask the company for proof of insurance as well.
This line dispatches licensed and insured restoration professionals. You should still ask any company, including the one that is sent, for its license and insurance details before you agree to work.
Red flags
- A price quoted over the phone without a site visit.
- No mention of the moisture source or containment.
- Pressure to sign right away.
- A promise that mold will never return.
- Testing and remediation done by the same company with no independent check when you need proof.
A company that promises mold will not return is selling certainty it cannot provide. The honest promise is that the work follows the standard and that the moisture is fixed.
Testing and clearance
Testing is useful when you need proof for a sale, a lease or a loan. An independent tester who did not do the remediation gives written results more weight. Ask lenders and buyers what they accept before you pay for a test.
If the mold followed a leak, ask how the structure will be dried. See water mitigation for the drying standard.
Want to compare scopes?
Call the 24/7 line. Scope and price are explained before work starts.
What to expect on the day of the work
A real remediation looks different from a cleaning. The crew sets plastic barriers, runs air scrubbers and negative air and works in protective gear. Affected materials are bagged inside the containment and carried out in sealed bags.
Surfaces are HEPA vacuumed and cleaned, and the area is dried. If you see a crew scrubbing mold with open air movement and no barriers, ask why. Open air can carry spores into clean rooms.
After remediation, rebuilding comes later, covered under water damage repair. Ask for a clear handoff in the written scope so you know when remediation ends and rebuilding begins.
Finally, compare scopes rather than totals. Two quotes with the same bottom line can cover very different work, and the cheaper-looking one may leave out containment, disposal or drying.
California local note: license lookup
California contractors are licensed by the Contractors State License Board, which publishes a license lookup. Check the license status of any contractor before you sign, and ask which classification covers the work you need.
Whether a given mold job requires a license or a certification depends on the work and on state rules. Ask the company to explain, and confirm with the state agency if the answer is unclear.
If your property is in Venice or Pacific Palisades, permit and inspection rules run through the City of Los Angeles. In Santa Monica, ask the city building division.
Questions homeowners ask
Independent testing gives more weight to the results. If you need proof for a lender or a buyer, ask for a tester who did not do the work.
Not always. Many water damage companies also do mold work, which makes sense since mold often follows water. Ask about the specific scope and standard.
No honest company can. The best a company can say is that the work follows the standard and that the moisture source is fixed.
It depends on the work involved. Ask the City of Santa Monica Building and Safety division, and ask any contractor who will pull the permit.