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Building Contractors Licence Exams Residential Contractors Exams Many states require building contractors to be licensed. To get licensed, you may need to take a business and law exam, as well as a trade exam. This app covers the trade portion of the exam will cover subjects such as plan reading and estimating, site engineering, site work and excavation, footings and foundations, concrete, masonry, carpentry, metals and safety. -450+ Questions -Each examination is a multiple-choice test with the options A, B, C, or D