Found mold at home?

Attic, walls, basement, or crawl space: start with five questions and get a plain answer — a small cleanup or a job for a professional — and what removal typically costs.

Take the Mold Check

Attic

• Mold in Attic: Causes and What to Do — Why mold grows in attics, from bath fans venting into the attic to warm-air leaks and roof leaks, and what to do, in order, once you find it.
• Signs of Mold in Attic — The signs of attic mold, from stained or fuzzy roof sheathing to damp or darkened insulation and frost in winter, and what each one tells you about the cause.
• Black Mold in Attic — What black or dark mold on attic sheathing means, why its color doesn't decide how serious it is, and what professional removal and prevention involve.
• Attic Mold Removal Cost — What attic mold removal costs in 2026, what pushes the price up, and why the roof leak, vent or fan behind the mold has to be fixed as well.

Walls and floors

• Mold in Walls: Signs and Removal — How to tell if mold is growing inside a wall, where the moisture comes from, how professionals find hidden mold, and what removal and repairs involve.
• Mold Under Carpet: Signs, Causes and When to Replace It — How mold gets under carpet after a leak or flood, the signs to watch for, why carpet and pad often can't be saved, and when to call a professional.
• Mold vs Mildew: What's the Difference? — Mildew is a common name for some kinds of mold, per the EPA. Where each shows up, why looks can mislead, and when a moldy spot needs a professional.

Basement and crawl space

• Mold in Basement: Causes, Where to Look and What to Do — Why basements get moldy, where to look, when the EPA's 10 sq ft line means calling a pro, and what basement mold removal typically costs.
• Black Mold in Basement: What It Means and What to Do — Dark mold in your basement? Why the color doesn't change the plan, how to judge the area, what professional removal involves and what it costs.
• Musty Smell in Basement: What It Means and How to Trace It — A musty basement smell points to moisture and likely mold. What the EPA says it signals, how to trace the source, and when an inspection makes sense.
• White Mold in Basement or Crawl Space — or Efflorescence? — White growth on basement walls or crawl space soil can be mold or mineral salt (efflorescence). How the EPA tells them apart and what each means.
• Crawl Space Mold Removal Cost — What crawl space mold removal costs in 2026, what the price covers, and what moisture-control work like a vapor barrier or dehumidifier adds to the bill.

Costs

• Mold Remediation Cost (2026) — What professional mold remediation costs in 2026 by area size and location, from two cost guides side by side, plus what an estimate should include.
• Mold Inspection Cost — What a mold inspection costs in 2026, what the inspector actually checks, how it differs from mold testing, and how to find an independent inspector.
• Mold Testing Cost — What mold testing costs by type of test, what air and surface samples can and cannot tell you, how home kits compare, and when a test is worth paying for.

Insurance and selling

• Does Homeowners Insurance Cover Mold Remediation? — When a homeowners policy may pay for mold removal, the common exclusions and limits, and what to document before a claim. General information only.
• Selling a House With Mold: Disclosure, Repairs and Paperwork — Selling a house with mold: how disclosure rules vary by state (New York and Texas examples), fixing first vs selling as-is, and the paperwork to keep.

Illustrations on this page are AI-generated to help you picture the situation. They are not photos of real homes, jobs or people.