How to hire a mold remediation contractor

Start with written quotes

Get at least two or three written quotes on the same scope. A phone number or a door-to-door discount is not a substitute for a site visit and a written proposal.

Ask whether the company that tests is separate from the company that removes. That separation is a common way to avoid a conflict of interest.

Ask what containment they will use and what happens to materials that are taken out of the house.

In states with a licensing program, ask for license numbers and confirm them with the state.

Questions to ask

• How will you find and fix the moisture source?
• What containment will you use, and what is the written scope?
• Is the company that tests separate from the company that removes?
• What licensing and insurance do you carry?
• What does clearance or verification look like at the end?

Licensing, insurance and references

Ask for license and insurance details and confirm them with the issuing agency where your state or city requires them. We confirm a listed company's business name, contact details and service area before publishing; we do not inspect work, endorse contractors or publish reviews, so check references yourself.

See also what affects cost and permits and local rules, or find mold remediation contractors by city.

This directory lists contractors; it does not give medical or health advice. For health questions, talk to a medical professional.