Nothing beats experience in the field. It means the inspector has pleased enough customers to stay in business, and has dealt with a variety of home types and conditions. Ask them very pointed questions. A good home inspection is much more than a stroll through the house with a flashlight. ASHI sets certain standards, including what constitutes a thorough inspection, and enforces those standards along with a code of ethics for its members.
Many companies also belong to statewide home inspection industry associations.
But don't necessarily turn a non-member away if their experience and references still check out. Even the best inspector can overlook a problem, and insurance indicates the inspector is prepared for it. Don't be surprised if they ask you to sign a waiver limiting the company or individual's liability to the cost of the inspection. Follow through with the next step. RealHome University, the web's only Online University for Home Buying .