About InterNACHI®

The International Association of Certified Home Inspectors – InterNACHI® – is the world’s largest trade organization of residential and commercial property inspectors. Founded in 1994 by Certified Master Inspector® Nick Gromicko, InterNACHI® is a federally tax-exempt 501(c)(6) nonprofit membership trade organization headquartered in Boulder, Colorado, and operates in 65 countries and nine languages.  It is part of the InterNACHI Conglomerate.

Read InterNACHI's Vision and Mission Statement.

Download InterNACHI's Membership Guide.

InterNACHI® and InterNACHI® School are recognized, approved, and/or accredited by more than 100 state, government, and non-government agencies as the inspection industry’s largest provider of online education for home inspectors, contractors, and real estate agents. 

InterNACHI® provides to its membership free online education courses and a Home Inspector Certificate Program through InterNACHI® School, which operates as a division within the membership trade organization. InterNACHI® School is accredited by a national accrediting agency (ACCET.org) recognized by the U.S. Department of Education. Our accredited college at internachi.edu provides our courses exclusively to InterNACHI® members. It's a members-only school. InterNACHI® School is a Member College of the National Association of Career Colleges (NACC) of Canada, a national association representing more than 500 regulated career colleges across Canada. 

InterNACHI® built the InterNACHI® House of Horrors®, an entire house with a thousand defects purposely built in. This unique facility is located at InterNACHI® Headquarters in Boulder, Colorado, with a second House of Horrors® located in Weston, Florida, and a third House of Horrors® located in Pennsylvania. InterNACHI® School does not require members to attend live training or enroll in any in-residence program, and InterNACHI® School does not require onsite attendance. The training experiences provided exclusively to InterNACHI® members at our Houses of Horrors® in Colorado, Florida, and Pennsylvania will help individuals develop their professionalism and skills as inspectors while enjoying the camaraderie with other members. Members seeking to gain and develop the knowledge, skills, and abilities necessary to perform a home inspection and to attain a Home Inspector Program Certificate of Completion may enroll in InterNACHI® School's tuition-free online Home Inspector Certificate Program.

InterNACHI® is represented at hundreds of inspection-related events every year, including live Chapter Meetings.

InterNACHI® operates the inspection industry’s most comprehensive website at NACHI.org. NACHI.org is a monster: a 285,000-page site dedicated to inspection-related issues, and also host to a 1.7 million-post message board that receives more than 1,000 new posts a day. NACHI.org gets over 260 million hits a year. Those hits have generated nearly 16 million inspection leads for InterNACHI® members. InterNACHI® operates nearly all of the internet’s inspection search engines, which include: the mammoth 430-million page North American Inspector Directory; OverSeeIt.com, a site that promotes independent oversight of residential remodeling and repair projects, including new construction; InspectorNow.com, a site that tracks down and calls the inspector when a consumer needs an inspection; InspectorSEEK.com; CorrectInspect.com; FindanInspector.us; and InspectorLocator.com, a site that allows consumers to search for an inspector based on their services, such as chimney inspections, commercial inspections, energy assessments, green certifications, IAC2-Certified inspectors, and those certified for testing for lead, meth, asbestos, mold, and radon, and log home inspections, new construction inspections, pool and spa inspections, pre-listing inspections, septic system inspections, stucco/EIFS inspections, thermal imaging, water quality testing, and WDO/insect inspections. 

InterNACHI® controls more than 4,500 inspection-related websites

InterNACHI's membership benefits are the most valuable and substantial in the industry. 

Find out what's new at InterNACHI®.

Join InterNACHI® Today

International Association of Certified Home Inspectors 

Founded in 1994

1750 30th Street, Suite 301
Boulder, CO  80301

(303) 223-0861 



U.S. DUNS  #015117501 


Unique Entity ID: Y2A5S5787H83

Physical Address:


Tax Exempt Status

State Exemption Letter