About Us

About the Founders


Steve Zivolich


With decades of experience in the industry, Mr.Zivolich has been chosen by many institutions to hold some of the highest trusted positions in the industry, among which has been the State Director of CREIA (California Real Estate Inspection Association) https://www.creia.org, National Board of Directors for ACAC, Field Instructor, EMF Consultant, and Expert Witness. Mr. Zivolich has provided many cities and real estate brokerage with public speaking and tutorial on property inspection, environmental testing and has provided training for other Inspector Associates.

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Joseph Gutierrez

Expert Wittness/Consultant
Certified with ACAC, CSMI; Certificate #1703019
DOSH Certified Asbestos Building Inspector; DOSH #CA-015-05
IICRC Certified Water Damage Restoration Technician; Register #63754094
MICRO Certified Mold Remediation Contractor; #84097

Mr. Gutierrez has been personally trained and coached for many years by Mr.Zivolich. Highly certified as an Environmental Hygienist and Property Inspector, Mr. Gutiérrez is well known and respected for his knowledge of the industry, work ethics, and superb customer service.

All other inspectors of Guaranteed Property and Mold Inspections have to pass a 3 months of training with Mr. Gutiérrez prior to rendering any service. 

We provide specialized testing for thermal imaging, EMF/RF, Mycotoxins, ERMI, VOC, allergens, bacteria, and other indoor air quality environmental issues. As part of our mold sampling process, we specialize in the utilization of an EPA-developed research testing tool, the Environmental Relative Mold Index (ERMI), when it is prescribed by an environmental medical physician/professional.

We are nationally and statewide certified, experienced, fully bonded, and insured to meet your inspection and mold/environmental testing needs. As nationally certified mold and property inspection experts, we personally provide all field services, and as a result, are able to maintain the highest BBB, Home Advisor, Yelp, and Angie’s List ratings.

The property and mold inspectors/DOSH Certified at Guaranteed Home and Mold Inspections hold national mold and environmental certifications from the American Council for Accredited Certification (ACAC).

Our inspection certifications include the American Society of Home Inspectors (ASHI), California Association of Real Estate Inspectors (CREIA), International Association of Certified Home Inspectors (Inter-NACHI).

Picking a Home Inspector / Mold Investigator

We realize that picking a property inspector/mold investigator can be anxiety-provoking. Of course, you want to have confidence in your inspector so that you can trust his/her judgment and skill.

We encourage you to consult us by phone at 949-328-5754 and also by email at joseph@gpinspect.com

We have also designed our website to provide additional sources of information on standards of practicecode of ethics, mold, allergens, home inspection, EMF, RF, and other indoor environmental issues.

We Believe That the Only “Bad” Question Is One That Is Not Asked.

We want you to leave the inspection feeling fully involved, comfortable, and satisfied with the inspection and products. If you need extra time to ask more questions or need more information, please ask us and we will do our best. We will also conduct a complete review of our findings at the conclusion of the inspection.

After the inspection, we will promptly provide you with a written report and photos of our findings. Please contact us once you have received and read the report, with any questions or suggestions you may have regarding our findings.

Healthy Homes

What People Are Saying About Us Online

Grayson Largman

Grayson Largman

Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Guaranteed Property and Mold Inspection was great to work with and we appreciate the speed and professionalism in which they worked. They were able to provide a same-day inspection and were on our doorstep within 2 hours of calling. Our inspector (Danny) was extremely knowledgeable, professional and friendly, and took the time to walk us through the inspection report and lab results after the inspection. We are very grateful for the service provided by Danny and Guaranteed Property and Mold Inspection. We would definitely recommend them for your next inspection. Thank you, Danny!!



Positive: Professionalism, Punctuality, Quality, Responsiveness

Excellent experience! Very thorough mold inspection after water damage in the apartment. Joe explained everything in advance of the inspection process, and the report was very detailed. He didn't try to add on any extra fees or unnecessary samples. Very straightforward. I would highly recommend it to family & friends!

Guaranteed Property and Mold Inspections is Trusted & Certified

Get Peace of Mind

If you suspect there may be a mold issue, don't hesitate to call us or schedule an inspection today!