Real estate inspectors are independent business people licensed by the Texas Real Estate Commission. Inspectors fall into three categories: apprentice, R.E. Inspector, and Professional Inspector. The Professional Inspector has the authority to sponsor apprentices and real estate inspectors. The basic functions of an inspector are: 1) inspect electrical wiring, plumbing, air conditioning, heating, household appliances, roofing, structures and foundations of residential and commercial buildings not exceeding 5,000 square feet in area; and 2) report to the purchaser his/her findings. Inspectors are chosen by potential purchasers to perform these functions prior to closure of the transaction. The inspector is expected to deliver his/her services in a careful and professional manner.