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How much does mold remediation cost in Spokane?
Most mold remediation jobs cost $1,500 to $9,000, or about $10 to $30 per square foot of affected area, according to national price guides. A small bathroom job can be a few hundred dollars; mold through an attic or the heating ducts can pass $10,000. The only way to know your price is a written quote for your home.
Typical cost by where the mold is
| Where the mold is | Typical cost |
|---|---|
| Bathroom | $500 to $1,500 |
| Crawl space | $500 to $2,000 |
| Basement | $1,500 to $4,000 |
| Attic | $1,500 to $9,000 |
| Inside walls | $1,000 to $12,000 |
| Heating ducts (HVAC) | $3,000 to $10,000 |
National figures from Fixr's mold remediation cost guide, updated August 2025. We have not found reliable published remediation prices for Spokane itself, so use these as a guide and compare local written quotes.
What makes remediation cost more
- The size of the area. Pricing usually follows the square feet affected, so a patch behind one wall costs far less than a whole basement.
- Where it is. Open walls are the easiest. Attics, tight crawl spaces and heating ducts take longer and need more containment.
- What has to come out. Drywall, insulation and carpet that have soaked up mold are removed and replaced, and that rebuild is often a separate cost.
- The water source. A roof leak, plumbing leak or drainage problem has to be fixed too, or the mold comes back.
- Testing after the job. A clearance test, ideally by an independent inspector, adds a lab fee but proves the work was done.
When you don't need to pay for remediation
If the mold covers less than about 10 square feet (roughly 3 by 3 feet) on a hard surface, the EPA and the Washington State Department of Health say you can usually clean it yourself with detergent and water, gloves, goggles and an N95 mask. Fix the moisture first. Anything larger, mold inside walls or ducts, or mold after sewage or flood water needs a professional. See mold removal in Spokane.
How to compare quotes and avoid overpaying
- Start with an inspection so you know how much mold there is and where the water comes from. In Spokane that is about $425 with lab samples (inspection cost guide).
- Get two or three written quotes for the same scope: which areas, what gets removed, how it is sealed off, and how the result is checked.
- Check what is included: rebuild, disposal, fixing the water source and the clearance test are sometimes extras.
- Ask your insurer before work starts. Mold from a sudden covered event, such as a burst pipe, is often covered; mold from slow leaks usually is not.
- Be careful with "free" inspections from companies that sell removal, since the inspection is paid for by the job it recommends.
Get a mold remediation quote in Spokane
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Common questions
Can I clean up mold myself?
Yes, if the area is small. The EPA and the Washington State Department of Health both say you can usually clean mold yourself when it covers less than about 10 square feet, roughly a 3 by 3 foot patch. For larger areas, mold from sewage, or mold hidden in walls or ducts, hire a professional. Fix the water source first or the mold comes back.
Is professional mold removal worth it?
Professional removal is worth it for anything bigger than about 10 square feet, for mold inside walls, ceilings, ducts or crawl spaces, and when someone in the home has asthma, allergies or a weak immune system. Professionals contain the area so spores do not spread and remove damaged materials that cannot be cleaned.
Does homeowners insurance cover mold removal?
Sometimes. Many policies cover mold caused by a sudden covered event, such as a burst pipe, but exclude mold from slow leaks, flooding or poor upkeep. Check your policy or ask your insurer before work starts, and keep photos and the inspection report.
How much does mold remediation cost per square foot?
National price guides put professional mold remediation at about $10 to $30 per square foot of affected area, with most whole jobs between $1,500 and $9,000 (Fixr, updated August 2025). Small, easy-to-reach jobs such as a bathroom can come in lower; mold inside walls, in heating ducts or across a whole attic costs more. We have not found reliable published prices for Spokane remediation, so treat these as a guide and compare written quotes.
Why do mold remediation quotes vary so much?
Because each company may be quoting a different job. One might quote only cleaning the visible mold, another the full job: sealing off the area, removing damaged drywall or insulation, fixing the moisture source and a clearance test. Get an inspection first, then ask every company to quote the same written scope so you can compare like for like.