Mold removal and remediation in Buffalo

What a real remediation job looks like

A proper job has a fairly boring shape, and boring is good. The work area gets sealed off with plastic so spores don't drift into the rest of the house, usually with an air scrubber keeping it under negative pressure. Material that can't be cleaned (wet drywall, ceiling tile, carpet pad, insulation) gets bagged and taken out. Hard surfaces like framing and block get cleaned, the space gets dried, and somebody checks that it worked.

What a proper job doesn't look like: a crew that sprays something on the wall, paints over it and leaves. Mold that is painted over is still there, and it is now harder to see.

New York splits the job in two

For any mold area larger than 10 square feet, Article 32 of the state Labor Law requires a licensed mold assessor to inspect and write a remediation plan first. A separately licensed remediation contractor does the work under that plan, and the assessor comes back for a clearance check. The assessor and the remover can't be the same company on the same property.

In practice that means two bills and a little more scheduling. It also means somebody with no stake in the removal decides how big the job is. As of October 29, 2026, 24 active remediation and 21 active assessment contractor licenses list an Erie County address, and any of them can be looked up on data.ny.gov.

Why Buffalo houses grow it

59% of homes in the city's ZIP codes were built before 1940 (Census ACS 2020-2024). Those basements were built to hold a coal bin and a furnace, not a finished rec room, and the walls pass water from the soil. Add about 11.9 thaw days a year at the airport and 44 summer days with a dew point at or above 60°F, and you get basements that are wet in winter and clammy in July. The same old houses have thin attic insulation, which sets up ice dams and attic frost after a big snow.

What it costs

Fixr's national figures: $1,500 to $9,000 for a typical job, about $3,500 on average, or $10 to $30 per square foot. Basements run $1,500 to $4,000, attics $1,500 to $9,000, a bathroom $500 to $1,500. Bob Vila's range is lower, $1,125 to $3,439. On a New York job over 10 square feet, add the assessor's fee for the plan and the clearance visit. The full cost guide.

Keeping it from coming back

Remediation without a moisture fix is a subscription. Before anyone rebuilds, know where the water came from: a plumbing leak, a roof or ice dam, seepage through the foundation, or condensation from humid air. Section 945 asks the assessor's plan to name the source where possible. The fix might be a plumber, a roofer, downspout extensions, or a dehumidifier that runs from June to September.

• The state license number, before anyone signs. Remediation over 10 square feet takes a New York Mold Remediation Contractor License. Ask for the number and look it up on data.ny.gov; it takes a minute.
• Someone else's plan on bigger jobs. The company that removes the mold works from a licensed assessor's written plan and doesn't assess its own job.
• The scope and price on paper. What comes out, what gets cleaned, how long it runs, and the three business days New York gives you to cancel a home improvement contract.
• The water dealt with, then a clearance. Mold comes back when the leak or seepage stays. The assessor's clearance report is how you know it's finished.