Some home inspection trade associations offer home inspector certification through their organizations. Trade groups offering certification include the National Association of Home Inspectors (NAHI), the International Association of Certified Home Inspectors (InterNACHI) and the American Society of Home Inspectors (ASHI).
Home inspection schools, along with community colleges and vocational schools, offer online and classroom training to potential home inspectors.
Some certification programs also require the candidate to complete a certain number of paid home inspections before applying for certification.
Home inspector certification programs typically require a candidate to pass a written examination. Some trade associations require the test to be taken in a proctored environment, while others allow candidates to take the exam online.
Continuing education courses or periodic testing may be required by some home inspection associations as a condition of membership renewal and continued certification. The association may offer its own classes, or approve classes offered by other organizations and schools.