Mold Inspection & Remediation in McKinney, TX

McKinney averages about 38 inches of precipitation a year under NOAA's 1991–2020 normals, with May and October the wettest months. Spring thunderstorms bring hail and strong wind, and the city sits near the East Fork of the Trinity River, where heavy rain collects in creeks and low areas.

The housing stock has two very different halves. McKinney has been the Collin County seat since 1848 and has preserved historic districts with houses from the late 1800s and early 1900s, many on pier-and-beam foundations with crawl spaces and older plumbing. Most homes, though, are recent: the city grew from 21,283 residents in 1990 to 54,369 in 2000, 131,117 in 2010, and 195,308 in 2020, according to the U.S. Census. In newer homes, mold usually starts at a clogged attic condensate line, a window or roof flashing leak, or a plumbing fitting behind a wall.

Across the county, expansive clay soils move slab foundations and the pipes beneath them, and hard freezes like the February 2021 winter storm burst pipes across North Texas. The EPA recommends drying wet materials within 24 to 48 hours to keep mold from taking hold.

McKinney has no separate cost survey, so the inspection range of $300 to $1,075 comes from what Dallas-area homeowners report. Removal pricing is taken from North Texas contractor price guides published in 2025–2026, and the clearance figure from a 2026 Dallas cost guide. Crawl space work under a pier-and-beam house in the historic districts can run higher when access is tight. Texas splits assessment and removal between licensed firms, so you pay for both plus clearance. See the remediation cost guide.

Two TDLR licenses cover mold work on a McKinney home. A mold assessment consultant inspects, samples, and writes the protocol; a mold remediation contractor removes the growth and is required once it covers 25 contiguous square feet. Texas does not let one license holder do both jobs on the same project, and since September 1, 2025, the employees doing either job must hold a TDLR license or registration themselves.

The owner of a residential property with fewer than 10 units may assess and clean it without a license, which covers most homeowners and small landlords. If you hire out, look up both companies at tdlr.texas.gov, get the Consumer Mold Information Sheet before work starts, and keep the Certificate of Mold Damage Remediation, due within 10 days after the job.

McKinney sees two very different claim types. In the newer subdivisions, it is usually a plumbing or appliance failure; the Texas Department of Insurance says most homeowners policies cover sudden and accidental water like that, plus mold on the items it soaked. In older pier-and-beam houses, it is more often a slow leak or drainage problem under the floor, which insurers usually treat as gradual damage and decline. Many Texas policies also cap or exclude mold remediation.

Homes near the East Fork of the Trinity River and its creeks should weigh flood insurance; a homeowners policy does not cover rising water, and a new NFIP policy normally waits 30 days before taking effect. Keep your remediation certificate once work is done; when it shows the cause was fixed, your insurer may not use the earlier mold in underwriting. See insurance and mold.