Call us anytime at 888-217-2719 to book an inspection or ask a question — we're happy to help.
At A-1 Certified Environmental Services, we help California families, property owners, and businesses understand exactly what’s in the air they breathe and on the surfaces they touch. Whether you’re worried about mold behind a wall, lingering smoke after a wildfire, or contamination in a recently purchased property, our certified inspectors deliver clear, lab-verified results you can act on with confidence.
We proudly serve San Francisco, Los Angeles, Sacramento, and surrounding regions.
Our testing and inspection services are trusted by:
No job is too big or too small — from a single bedroom to a multi-story commercial building.
Poor indoor air quality is one of the most common — and most overlooked — causes of allergies, headaches, fatigue, and chronic respiratory issues. We help you find the source and fix it.
If someone in your household struggles with allergies or asthma, invisible irritants could be the culprit.
Volatile Organic Compounds (VOCs) are gases released from paints, cleaners, building materials, and furnishings — and they can linger long after installation.
We provide accredited laboratory testing for restaurants, healthcare facilities, nursing homes, dental offices, apartment complexes, and homeowners.
If you suspect a bacteria problem in your business or home, don't wait. We collect samples on-site and send them to an accredited laboratory for fast, reliable analysis.
E. coli infections are most often contracted through contaminated food or water. Symptoms typically last 5–10 days, but the only way to confirm contamination in your environment is through professional lab testing.
Invisible. Odorless. Often dangerous. Our specialized residue testing protects families, tenants, employees, and used-vehicle buyers from hidden contamination.
If your car has been stolen, you’re buying a used vehicle, or you suspect drug activity in a property, fentanyl testing gives you peace of mind — especially if young children or elderly family members are at risk.
We use two trusted methods:
Because fentanyl is extremely potent, only trained professionals should handle testing. We also work directly with insurance companies on stolen-vehicle cases.
Meth residue is invisible, has no smell, and can linger in walls, carpets, and HVAC systems for years. Secondhand and thirdhand exposure can trigger asthma-like symptoms and other serious health issues.
If you’ve recently purchased or rented a property — or have any reason to suspect prior meth activity — testing is the only way to know. The good news? Once detected, residue can be safely remediated.
THC, CBD, and other cannabinoids leave behind residue that lingers long after the smoke clears. Over-the-counter test kits won’t pick this up — only accredited laboratory analysis can confirm cannabinoid levels in your home’s air.
This testing is especially important if you have children, elderly relatives, or anyone with respiratory conditions in the home.
Tobacco smoke contains over 4,000 chemicals — many of which remain in walls, carpets, and ductwork as secondhand and thirdhand smoke. Our accredited labs test for low-volatility markers including acrolein, arsenic, hydrogen cyanide, and naphthalene.
Wildfires and structural fires leave behind more than ash. Chemical residues can linger in homes for months — sometimes years — long after the visible cleanup is done.
Before you (or your tenants) move back in, our post-fire air quality testing verifies that chemical contamination levels are safe for habitation. We test, document, and provide clear, actionable reports.
Need to clean up your air now? We deliver professional-grade restoration equipment directly to your home or business.
Air scrubbers pull in contaminated air, capture mold spores, dust, allergens, and odors, and return clean, oxygenated air to the room. Ideal for:
Safe to use 24/7 with people present, hydroxyl generators eliminate a wider range of bacteria, odors, and VOCs than traditional methods — perfect for smoke damage, floods, and persistent musty odors.
1019 Divisadero Street, San Francisco, CA 94115
819 Santee Street, Los Angeles, CA 90014
7050 Westmoreland Way, Sacramento, CA 95831
Whether you need a single mold test or full commercial air quality assessment, we’re here to help. Our team will walk you through your options, answer your questions, and schedule a visit at a time that works for you.
