American Society of Home Inspectors (ASHI)
- Oldest and largest professional organization for home inspectors in North America.
- http://www.ashi.org

National Society of Home Inspectors (NSHI)
- Organization promotes professionalism of inspectors. Features services, standards of practice, code of ethics, member directory, consumer information.
- http://nshi.us

Historic Building Inspectors Association (HBIA)
- Features membership requirements and application, technical resources, related links. Based in Springtown, PA.
- http://inspecthistoric.org

National Association of Mold Professionals (NAMP)
- Non-profit organization promotes the mold inspection and remediation industry. Includes membership, training, benefits, and standards.
- http://www.moldpro.org

National Association of Real-estate Inspection & Evaluation Services (NARIES)
- Organization dedicated to public awareness. Provides knowledge and training to its members and to consumers. Features standards of practice, ethics, chat rooms.
- http://www.naries.org/

National Association of Home Inspectors, Inc. (NAHI)
- Nonprofit association promotes and develops the home inspection industry. Features member locator, chapter information, national conference, membership benefits.
- http://www.nahi.org/

National Association of Certified Home Inspectors (NACHI)
- A national association of professional home inspectors.
- http://www.nachi.org/

National Academy of Building Inspection Engineers (NABIE)
- Organization of licensed engineers providing real estate inspections.
- http://www.nabie.org/

International Society of Home Inspectors (ISHI)
- An international association to help further the growth and professionalism of home inspectors.
- http://ishi.cc

American Institute of Inspectors (AII)
- An international association of home and building inspectors.
- http://www.inspection.org