- Certified: Virginia Home Inspector
- Member: NOVA ASHI (Northern Virginia Chapter)
- Member: Mid-Atlantic Chapter American Society of Home Inspectors (MAC ASHI)
- Member: VAREI (Virginia Association of Real Estate Inspectors)
- Licensed: Maryland Home Inspector
- ASHI Member
- ASHI Certified Inspector (American Society of Home Inspectors)
- Graduate: Home Inspector Training Academy (HITA)
- NAHI - CRI (Certified Residential Inspector)
- Certified Radon Measurement Provider: NEHA NRPP (National Radon Proficiency
ThoroSpec founder and principal, Hollis Brown, long time certified member of the American Society of Home Inspectors, is a 40-year veteran of the Washington, DC metropolitan area Home Building and Home inspection industry and has performed over 5,000 home inspections since 1997. He is certified by the Commonwealth of Virginia, licensed by Maryland and holds the CRI credential of the National Association of Home Inspectors (NAHI).
As owner/operator of the prestigious Home Inspector Training Academy, Hollis has trained thousands of home inspectors both locally and nationwide.
Hollis is also the webmaster of YadZooks, the Universal Hub of all Things Real Estate.