Oldest and largest professional organization for home inspectors in North America.

An international association of professional home and commercial property inspectors. Features include membership benefits, member locator, educational resources and chapter information.

A members only association of state-licensed professional engineers and registered architects specializing in the practice of building inspections. Affiliated with the National Society of Professional Engineers.

Non-profit organization promotes the mold inspection and remediation industries. Includes membership, training and certifications, benefits, and standards.