Where is the mold, how bad is it, and what does removal cost?
Answer five questions. You'll see whether this looks like a small cleanup or a job for a professional, what usually drives the price, and typical cost ranges for your part of the house.
Next step: get an on-site assessment from a licensed mold remediation professional.
Ask for a written scope that covers the moisture source, containment, removal, and how they will confirm the job is done.
| Location | Typical cost |
|---|---|
| Attic | $1,000–$4,000 |
| Basement | $500–$3,000 |
| Bathroom | $500–$1,000 |
| Crawl space | $500–$2,000 |
| HVAC system / ducts | $3,000–$10,000 |
| Whole house | $10,000–$30,000 |
Average job about $2,300; most jobs $1,200–$3,750; about $10–$25 per sq ft (average $18). Source: This Old House, Mold Remediation Cost (updated Mar 11, 2026; data mostly from Angi). Small-area guidance: U.S. EPA, A Brief Guide to Mold, Moisture and Your Home.
Illustrations on this page are AI-generated to help you picture the situation. They are not photos of real homes, jobs or people.
Health and safety. Mold can affect health, especially for people with allergies, asthma, or weakened immune systems. This site does not give medical advice — for health concerns talk to a doctor. For mold removal, contact a licensed mold remediation professional (licensing rules vary by state).
Disclaimer: MoldWhere is a free service to assist homeowners in connecting with local service providers. All contractors/providers are independent and MoldWhere does not warrant or guarantee any work performed. It is the responsibility of the homeowner to verify that the hired contractor furnishes the necessary license and insurance required for the work being performed. All persons depicted in a photo or video are actors or models and not contractors listed on MoldWhere.
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