Serving the Greater Los Angeles Area 310-893-9903 aaa.asb.inspections@gmail.com

Hours: 8am-5pm

Mold Testing Services

Mold thrives in Southern California’s warm, often humid microclimates, and it can spread through a building long before you notice a musty smell or dark staining. Once spores take hold, they compromise indoor air quality, trigger severe allergies, and quietly damage drywall, flooring, and structural timbers.
At AAA Asbestos Inspections, we provide precise mold testing that uncovers hidden contamination, verifies spore counts, and guides targeted remediation. Our certified inspectors combine cutting-edge sampling technology with deep knowledge of Los Angeles construction, delivering rapid answers that keep families safe and renovation projects on schedule. Take a look at why mold is such a major concern for our area, how you can recognize it, and what we’ll do to permanently remediate it if you partner with us.

A Closer Look at Mold and Its Health Impact

Health Risks of Indoor Mold

Exposure to elevated mold spores can inflame airways, aggravate asthma, and cause persistent coughing or skin irritation. Vulnerable groups, including children, seniors, and people with weakened immune systems, often see symptoms escalate quickly when indoor counts climb above baseline outdoor levels.

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Common Sources in California Buildings

Leaky roofs, failed window seals, and slow plumbing drips provide the moisture that mold needs to flourish. In many Los Angeles homes, poorly vented crawlspaces and HVAC condensate pans also harbor colonies that release spores into living areas each time the system cycles on.

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How Mold Spreads Through HVAC & Materials

Once spores become airborne, they ride return-air currents, settle on dusty ductwork, and colonize porous materials such as cellulose insulation and acoustic ceiling tiles. Without professional testing to map concentrations, you risk cleaning one room while a hidden source continues feeding the infestation elsewhere.

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MOLD TESTING

Warning Signs You Need Professional Mold Testing

Even without specialized equipment, your building gives off unmistakable signals when mold is taking hold. Acting on these clues quickly can save thousands in repairs and safeguard your family’s health.

Dark blotches on drywall, fuzzy spots on insulation, or speckled patterns creeping across baseboards almost always point to an active colony. Many homeowners scrub the surface clean, only to watch stains reappear within days because the root network has penetrated deep into porous material. Pay attention to odor as well: a damp, earthy, or sour smell that intensifies in closed rooms indicates spores releasing microbial volatile organic compounds, also known as mVOCs.

Those gases are more than unpleasant, and they can trigger headaches, sinus irritation, and chronic coughing. Because different molds carry different health risks, a professional test is essential. We collect air and surface samples, identify species under a microscope, and quantify spore counts so you can target the problem accurately instead of relying on guesswork.

Any incident that soaks building materials, like burst pipes, roof failures, sprinkler discharges, or full-scale firefighting efforts, will create the perfect situation for mold. Moisture can stay trapped behind cabinets, under hardwood floors, or inside wall cavities long after surfaces feel dry. Within 24–48 hours, dormant spores germinate and begin to colonize structural lumber, drywall paper, and carpet backing.

Even if you run dehumidifiers and fans, you may not remove every hidden pocket of moisture. A professional test 72 hours after water intrusion confirms whether spore levels remain within safe background ranges or have already surged, allowing you to begin targeted remediation before costly demolition becomes the only option.

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Our Mold Testing Process

From your first call to the final clearance sample, our process is designed to minimize disruption and deliver facts you can act on. Each phase follows strict protocols refined over decades in the field to meet Los Angeles regulations.

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First, we start with a walk-through using thermal imaging and pin-type moisture meters to locate hidden damp spots behind walls, under flooring, and inside HVAC chases. Photographs and humidity readings establish a baseline for later comparison.

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Depending on the findings of this assessment, we collect a combination of indoor and outdoor air samples, surface swabs, and wall-cavity lifts. This mixed approach captures both airborne spores and growth that has not yet been released into the room. Samples are double-bagged, logged under chain of custody, and shipped overnight to an AIHA-accredited microbiology lab. Technicians perform spore-trap microscopy and culture testing to identify genus and species and document colony-forming units per cubic meter.

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Within forty-eight hours, you receive a digital report that compares your indoor results to accepted background levels. Color-coded tables highlight areas of concern, while annotated floor plans show exact sampling points to help contractors focus remediation efforts. We’ll go over the findings with you by phone, explain safe removal or sanitization options, and provide a list of vetted remediation companies if abatement is necessary. After cleanup, we can return for clearance testing to verify that spore counts have returned to normal.

California’s mold disclosure statutes (SB 655 and the Toxic Mold Protection Act) require owners and
landlords to address indoor mold promptly and to maintain clear documentation of any testing or
remediation. Our protocols align with those laws as well as the Environmental Protection Agency’s
Indoor Air Quality guidelines, the American Industrial Hygiene Association’s “Green Book,” and ASTM
D7338.


Every sample travels under an intact chain of custody to an AIHA-accredited microbiology laboratory,
which employs spore-trap microscopy and culture growth to identify genus and species with scientific
certainty. The lab’s raw data arrive within forty-eight hours, but numbers alone won’t tell you the whole
story. We’ll go over everything with you in plain language.


Your digital report begins with an executive summary that compares indoor spore counts to outdoor
control samples and to California Department of Public Health reference thresholds. Next, color-coded
tables break down results by room, listing colony-forming units per cubic meter and highlighting any
species known to produce mycotoxins. Annotated floor plans pinpoint problem zones, helping
contractors concentrate remediation where it is truly needed. Finally, a narrative section explains
probable moisture sources, ranks the urgency of each finding, and outlines step-by-step remediation
recommendations that comply with Cal/OSHA worker-protection rules.

Why Us?

Why AAA Asbestos Leads in Los Angeles Mold Testing

  • Certified & Insured Inspectors: Every member of our mold team carries AIHA field training, Cal/OSHA certifications, and robust liability coverage, giving you peace of mind that testing is handled safely and legally.
  • Advanced Sampling Technology: We deploy thermal imaging, pin-type moisture meters, and calibrated air pumps that meet or exceed AIHA performance standards, capturing an accurate snapshot of your indoor environment on the first visit.
  • Rapid Turnaround Times: Standard reports arrive within forty-eight hours, and rush analysis is available for real-estate deadlines or active construction sites. Fast answers keep projects on schedule and reduce costly delays.
  • Client Education & Ongoing Support: We don’t just hand over lab numbers. Our inspectors explain findings in plain English, outline clear remediation options, and remain available for follow-up questions long after the initial report. If you need clearance testing after cleanup, we can handle that too.
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Protect Your Property With Expert Mold Testing

Unchecked mold can erode property value, trigger severe health issues, and derail renovation budgets. Trust our certified professionals to deliver precise testing, clear reports, and guidance you can act on. Contact AAA Asbestos today to get started on your residential or commercial mold testing, anywhere in the Los Angeles area.