Mold Inspection in Houston, TX

Houston gets about 56 inches of precipitation a year under NOAA's 1991–2020 normals and has no true dry season, so the question is rarely whether a house sees moisture. It is where moisture collects and stays. A licensed mold assessment consultant answers that with a meter, a thermal camera, a humidity reading, and a careful walk through the places Houston houses usually fail.

What gets checked in a Houston house

• Flood history. In a home that flooded in Harvey, the Tax Day flood of 2016, or the Memorial Day flood of 2015, the inspector checks baseboards, the bottom of walls, and cabinet bases for moisture and for signs that cavities were closed before they dried.
• The attic. Air handlers and ducts in a hot attic sweat when cold air runs through them. Inspectors look at duct boots, insulation around supply lines, the drain pan, and the condensate line.
• How the AC behaves. A system that cools quickly and shuts off can leave indoor humidity high. A reading well above the EPA's 60% ceiling points to an equipment or sizing problem, not just a leak.
• Under the house. Pier-and-beam bungalows in the Heights and other older neighborhoods have crawl spaces that breathe humid air all summer.
• Slab plumbing. Clay soils that swell and shrink can crack pipes under the foundation, so walls around tubs, toilets, and water heaters get readings.

When to book one

Book an inspection when water got in and was not dried within 24 to 48 hours, when a musty smell has no visible source, when you are buying a home in a flood-prone area, or after a long outage like Hurricane Beryl left the house closed and hot. About 47% of Houston's housing was built before 1980, according to the Census ACS, and older homes often have repairs layered over earlier water damage. A small, visible spot in a bathroom with a known cause usually does not need a paid inspection.

What you get on paper

If the consultant finds growth that needs professional removal, you receive a written protocol listing the areas and quantities of material to remove, how the area will be contained, and the clearance criteria the contractor has to meet. That document lets you compare remediation bids fairly and is what an adjuster will ask for.

Why the inspector stays off the cleanup

Texas does not let one license holder perform both the assessment and the remediation on the same project. The person deciding how much comes out earns nothing from the removal, which is one of the better protections a homeowner has after a storm, when demand and prices both spike.

Inspection prices in Houston

Houston price guides from 2026 put a mold inspection at about $300 to $600, with lab analysis at $50 to $150 per air or surface sample. A large two-story house, attic and crawl space access, and several samples move the price up. Free inspections exist, but they are usually a visual look tied to a removal estimate; our guide to free mold inspections shows what to ask. If you mainly need lab confirmation, see mold testing in Houston; if the problem is already mapped, go to mold remediation in Houston.

Calling for an inspection

Mention any flood history, whether the house is slab or pier-and-beam, and when the smell or stain appeared. The company you are connected with can then quote the visit and say whether samples are likely. The call is free, and booking is up to you.

Texas licenses mold assessment consultants through TDLR, with limited exemptions for owners working on their own small residential property. After a Houston storm, check every consultant at tdlr.texas.gov before letting them in.