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Mold Inspection Sciences
San Diego, California (serving all surrounding areas)

Mold Inspection and Testing in San Diego and Surrounding Areas

Helping our clients breathe easy and thrive safely in all home or work environments

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Download our Free Flood Recovery Check List

Two overlapping informational pamphlets titled FLOODS: RECOVERY 101 from Mold Inspection Sciences detail essential mold prevention and recovery steps. The text guides thorough mold assessment after floods. Water droplet graphics enhance the blue-toned background. Contact info is included.

Your Flood Recovery Questions Answered

Here’s How to Get Started When Flooding Has Impacted Your Property. This free download will help you confidently move forward with a flood recovery plan of action to ensure that you proceed the safe way and the right way.

Find the Checklist Here

You'll Love Working with Mold Inspection Sciences, Ask Our Customers

I hired Brian with Mold Inspection Sciences for an independent inspection after a previous inspection left me with unanswered questions about my home. His thoroughness and attention to detail made such a difference.

Brian examined areas in the bathrooms, my closet, and the HVAC room and collected samples, including from the vents. He took my concerns seriously and gave these areas the careful attention I had been hoping for.

Dealing with concerns about your home while managing...

Michelle L. Los Angeles, CA, 10/20/2026

Tim was great! Waiting on my samples to come back on Thursday. Very helpful and knowledgable!

Zachary E. Newport Beach, CA, 10/19/2026
Mold Inspection Sciences Client Review
Connor was on time & professional. He took the time to explain each step of the process and walk me through his observations. I really appreciated his transparency and attention to detail. I will definitely recommend you guys!
Janene J. San Diego, CA, 10/19/2026

We had Connor come out to do the inspection. He did a great and thorough job. We appreciate him and the value this company provides with each inspection. We've used them twice now and will only be using this company for future mold inspections. Trustworthy and gives great detailed reports and peace of mind. Thank you again!

Taylor B. San Marcos, CA, 10/9/2026

Tim Ruddy provided inspection service last week. he was amazing. kind. patient. informative. not pushy on unneeded services. he and his company get 6out of 5 stars. my wife and I highly recommend!!

Chantal M. Long Beach, CA, 10/2/2026

Accompanied my friend for her mold inspection. Tim Ruddy is phenomenal. He's incredibly knowledgeable. He's great with the client. My friend has mold sensitivities and is buying a new home. Tim was very thorough and able to answer all of the questions. You should definitely ask for Tim!

Lauren S. Corona, CA, 9/30/2026
Mold Inspection Sciences Client Review
This is my first experience using a mold inspection company, so I did not know what to expect. Bryan arrived on time and conducted the requisite tests, and as he went along he informed me of what he had found through his visual inspection and recommended another five (rather expensive) tests to determine air level quality throughout the condo. He seemed confident in what he was doing and did the job in a timely manner.
Alex I. Palm Springs, CA, 9/29/2026

Zander just visited my apartment and he was very friendly, professional, and knowledgeable about what he was doing.

Alexander R. Los Angeles, CA, 9/25/2026

The LAST thing I wanted to hear was that we had mold in our basement and company coming in a month. Mold Inspection Sciences came quickly, did a fantastic job job with caring, knowledgeable people. They treated me like I was a member of their family. We even got the final report back sooner than expected so now I have more time to get ready for company. I'll be honest- I hope I never need them again. But if I ever have another mold problem, I have them on speed dial. Signed- a VERY satisfi...

Deborah S. Los Angeles, CA, 9/15/2026
My mold inspection with Tim Ruddy was great. He was thorough and patient, explaining to me what he might be looking for and answering additional questions I had. We discussed what made sense in terms of what samples to test for which I appreciated that he understood my concern for mold and desire for peace of mind but also that I didn't want to go overboard, unlike some other companies that might take advantage of worried customers. It is also reassuring to deal with someone who is not on...
grace 9/10/2026

My mold inspection with Tim Ruddy was great. He was thorough and patient, explaining to me what he might be looking for and answering additional questions I had. We discussed what made sense in terms of what samples to test for which I appreciated that he understood my concern for mold and desire for peace of mind but also that I didn't want to go overboard, unlike some other companies that might take advantage of worried customers. It is also reassuring to deal with someone who is not onl...

Grace K. La Palma, CA, 9/10/2026
Mold Inspection Sciences Client Review
Very knowledgeable and helpful with understanding the process.
James S. Santa Ana, CA, 9/2/2026

I had mold inspection of my house. Tim explained the procedure and kept me informed of the progress.

Denise S. Rancho Santa Margarita, CA, 8/18/2026

Timothy went above and beyond to explain everything to us and was very thorough. Great company.

Aurelie S. Laguna Hills, CA, 8/12/2026

Timothy went above and beyond to explain everything to us and was very thorough. Great company.

Aurelie S. Laguna Hills, CA, 8/12/2026

Xander was personable, thorough and professional. He made a potentially painful process painless and pleasant.

Barns C. Los Angeles, CA, 8/6/2026

Our experience was Tim was a fantastic one. He was thorough, respectful, and very knowledgeable. He took the time to answer all of our questions and explain the science behind the tools he was using so that we could understand the evaluation process. We highly recommend him for your mold inspection service!

Brooke A. San Diego, CA, 8/4/2026

Andrew did an Excellent job with my recent inspection! He was very professional, meticulous, honest, and thorough. He spent all of the time required to do a very comprehensive analysis, without rushing to finish the job. I couldn't be happier with Mold Inspection Sciences, and with Andrew, in particular. Two thumbs up!

John T. Los Angeles, CA, 7/25/2026

Very thorough inspection. Tim the inspector was very professional and courteous. I just received my test results and am relived that it came out clean. Great peace of mind to know.

William H. Newport Coast, CA, 7/24/2026

Tim was my inspector that came yesterday to our apartment. He did a very thorough job with the inspection and answered all my questions and was very compassionate to my chronic illness and possible mold exposure in our home. I recommend this company as they are great and fair priced, along with prompt, and very knowledgeable. I trust our apartment in their hands. I also like the fact that once the landlords fix the mold issues, Tim will come back and do a pre move in inspection to make sur...

Taylor B. San Marcos, CA, 7/22/2026

Mold Investigation Methods

Moisture Detection

Moisture Detection

Mold growth requires three things: mold spores, a food source (building materials), and moisture or water. So, where we find moisture, we find mold. By locating the source of moisture and identifying hidden water intrusions, we can focus our mold investigation in the right areas.

If there was water damage from a flood, a leak, or a natural event we can inspect and assess the water damage along with identifying the presence of mold and make recommendations on the best way to return the home or office to a healthy state. 

Infrared Technology

Infrared Technology

We use FLIR infrared camera technology to enhance our inspection services. This advanced, non-invasive technology allows our inspectors to zero in and identify potential sources of moisture to more accurately determine testing and sampling areas. This will allow us to make even more precise conclusions and recommendations for action during the inspection.

Sampling and Testing

Sampling and Testing

We often get questions about how we determine which sample types to recommend, why we recommended a specific number of samples, and other questions about our sampling approach - known as our Sampling Strategy. Through the course of the assessment, our inspector will put together a Sampling Strategy specific to your property that will allow us to pinpoint problem areas, determine overall contamination levels, guide remediation efforts when needed, or in other cases rule out mold as a source of concern. If you have questions about the type of samples used or are wonder how and why specific recommendations are made, you can find tons of information in our Sampling Guides. Feel free to reach out to us with specific questions.

Certified Mold Inspectors

Certified Mold Inspectors

Performing professional, high-quality inspections requires three things—certification, education, and experience—values we do not take for granted. Each of our inspectors, consultants, and project managers is a Certified Mold Inspector (MICRO and MIS CMI). To protect your liability, property, and health, it’s important to engage the services of a professional and certified mold inspector. 

No Conflict of Interest

No Conflict of Interest

We don’t perform mold remediation, repair, or construction. We have no interest in the outcome of our inspections other than to ensure you have the information needed to return your home or office to a healthy state. Our expertise guides us, and we never have a conflict of interest regarding our findings and recommendations. We use a science-based approach and only do inspections and testing, never remediation.

Specialized Air Sampling Equipment

Specialized Air Sampling Equipment

We use industry-standard sample collection equipment, meticulously maintained, and regularly calibrated to ensure the integrity of our samples and the accuracy of the results.

163 Reviews