Mold Removal Contractors in Columbus, OH

Columbus's combination of 70% average humidity and older housing stock (median home built in 1966) creates a specific mold problem: basements and crawlspaces in these decades-old homes absorb moisture year-round, especially during the city's 39 inches of annual rainfall. Brick foundations and concrete slabs common in post-war Columbus construction are particularly vulnerable to seepage and condensation. If you're seeing mold in a basement corner, around floor joists, or in crawlspace insulation, your home's age and the regional humidity are likely working together against you.

Mold remediation in Columbus typically runs $1,200 to $3,600, depending mainly on how much affected material needs removal, whether the source (usually water intrusion or condensation) is easy to fix, and how much of your home is involved. A small bathroom mold spot costs far less than a basement wall that's been damp for years.

Ohio doesn't require a state license for mold remediation, so your job is to verify the contractor yourself. Look for IICRC S520 certification (the industry standard) and confirm they carry both general liability and pollution liability insurance. Ask to see current certificates before hiring. We've listed 37 contractors for Columbus, so you have real options.

One critical note: many Columbus homes have cast iron drain lines from the 1960s-1970s that corrode and leak inside walls, causing hidden mold behind walls and under flooring. If a contractor finds mold but doesn't investigate your plumbing, ask why. That's where the real problem often hides in this city.