Becoming a home inspector in Maine doesn't require a state-issued license, but the inspectors who win referrals from Portland, Bangor, and Lewiston-Auburn real estate agents typically carry voluntary certification through ASHI or InterNACHI. Maine's housing stock is among the oldest in the country, with substantial pre-1900 inventory across the state's coastal towns, granite block foundations common in mid-state communities, and historic timber-frame construction in rural areas. The path to a successful Maine inspection career runs through professional-grade training, passing the National Home Inspector Examination, and earning the trust of agents who already have established inspector relationships.