Mold Inspection and Testing Service Areas in Southern California

“Demi so was helpful when I called in to inquire about getting my property inspected. Joe showed up the next day on time and spent a few hours thoroughly inspecting my property, in which he did find mold growing. I’ve been having some serious health problems and feel such a sense of relief that I hired GPMI to help me get to the bottom of it. I will definitely use them in the future and would recommend them to anyone looking to get an inspection done”

Really great service by the GPMI team. They came in and took care of everything for me and really helped navigate me through the next steps. My health is so important to me and they really stepped in to help me during a difficult time.

10/10 service, would recommend to anyone

I'm glad to say that I was able to find this company to help me with my new apartment I just moved to Fullerton and unfortunately I am in an older building with a lot of issues. The gentleman that came out was very nice and found a couple areas of water issues that I didn't even know about that had some mod growth. He was very thorough with my place being so small I think the time he spent was a lot trying to really find any problems that I could address to the property management which they took his report and did make the necessary repairs for me! Thank you guys!

I recently hired Joseph from GPMI for a mold inspection, and I can't recommend him enough. He is incredibly thorough and a true expert in his field. He was able to pinpoint every source of moisture in the rental property—a crucial skill since many property management companies aren't upfront about past water damage.

I'd been experiencing severe brain fog, allergies, and worsening autoimmune symptoms. My doctor insisted on a professional inspection, especially because of my specific genetic predisposition (HLA genetics, CIRS)—if you know, you know. Joseph is exactly who you want for your air quality testing and mold inspection. He's incredibly knowledgeable and a true professional.

We're exposed to enough pollutants and toxins in our daily lives through food and the air outside. The least we can do is invest in our health to ensure our home is a safe space with good air quality. For me, investing in my health is a non-negotiable—I'll gladly give up other wants in life because when I don't feel well, nothing else matters.

If you're dealing with symptoms that might be linked to mold exposure, or if you simply want to ensure your home is a healthy environment, don't hesitate. GPMI saved me from further damage to my health. Don't be afraid to stand your ground to protect your well-being, even when facing resistance from your landlord.

We couldn’t be happier with our experience working with Guaranteed Property & Mold Inspection. Even before our inspection, Demi went above and beyond to make sure we fully understood the inspection process and felt comfortable every step of the way. Her warmth, professionalism, and attention to detail were clear from the start—she answered every question patiently, listened carefully to our concerns, and provided clear and reassuring explanations.

Demi’s genuine commitment to our satisfaction truly set her apart. She coordinated everything smoothly, made herself available for follow-up questions even at odd hours, and worked with us to see how things were going even after the inspection was complete. It’s rare to find someone who cares so deeply about their clients and takes such pride in their work.

We also want to extend our sincere thanks to Joseph for his part in our experience. He gave us direct communication during the process. Their professionalism, integrity, and thoroughness exceeded our expectations.

We highly recommend Guaranteed Property & Mold Inspection to anyone seeking honest, reliable, and caring service for their property needs. We are grateful for their help and wouldn’t hesitate to call them again in the future.

I had a severe water leak due to my bathroom not being waterproofed correctly which caused moisture and mold issues. Joseph and Demi provided me with the reports I needed in order to hold my contractor liable for his faulty work. They were a pleasure to work with and went above and beyond to help us through this unfortunate problem. This company is among the very few of certified professionals that is approved for legal court documentation requirements.