Inspections start during the first phase of construction. Follow-up inspections are made during construction. The purpose of the frequent visits is to make sure that buildings continue to meet regulations. Inspectors suggest changes and check later that they were made. The size and type of structure determine how often the inspector visits.
Inspectors generally specialize in one type of construction work.
Specialties include electrical, plumbing, and mechanical inspection. Public works inspectors check bridges, highways, streets, and other public structures. Home inspectors examine a home before it is sold or to determine if repairs are needed. Inspectors also check permits on home repairs. Although inspections are primarily visual, inspectors often use tools.