Lab-verified mold testing for LA homes & businesses

Hardware-store mold test kits — the petri-dish style settle plates — are one of the most common reasons Los Angeles homeowners end up either ignoring a real mold problem or panicking over a non-issue. Mold spores are present in every outdoor environment in Southern California; a plate left open on a counter will always grow something. Without calibrated collection volumes, an outdoor control sample collected the same day, and an accredited lab to identify and quantify spores, the result is essentially meaningless.

Clear Home mold testing uses the same methodology accepted by EPA guidance, insurance carriers and industrial hygiene standards: calibrated spore-trap air pumps drawing a known volume of air over a known time interval, with paired indoor and outdoor samples analyzed by an independent AIHA-accredited laboratory. The result is a quantified, defensible spore count you can take to an insurance adjuster, an attorney, a physician or a remediation contractor.

Air sampling (spore-trap cassettes) is our primary method and is used in roughly 90% of LA County mold testing projects. It captures both viable and non-viable spores in the air a person is actually breathing, and it can be directly compared to an outdoor baseline. Surface sampling — swabs and tape-lifts — is used when there is visible suspect growth and you need to confirm species. Bulk sampling collects an actual piece of affected material when destructive testing is justified. We choose the sampling method that answers your specific question, not the one that drives up the invoice.

Independent post-remediation verification (PRV), often called clearance testing, is the only way to confirm that a mold remediation project in Los Angeles was actually successful. We arrive after the containment is built and the remediator has completed cleaning, perform a visual assessment of the work area, and collect post-remediation air samples that are compared to outdoor controls and to industry clearance criteria. Because Clear Home did not perform the remediation, the clearance verdict is genuinely independent — a critical distinction for insurance, real-estate and litigation purposes.

Every Clear Home mold testing report includes the raw lab data, the AIHA chain-of-custody documentation, an indoor-versus-outdoor comparison, plain-English interpretation of the spore counts, identification of the dominant mold types, and specific next-step recommendations. We will walk you through the report over the phone at no charge, and we are happy to speak directly with your physician, allergist, insurance adjuster, attorney or contractor so everyone is working from the same data.