Commercial construction projects include constructing and selling commercial structures such as offices, retail centers, warehouses, and industrial systems. General contractors are mostly hired by business owners, managers, and developers to construct or remodel their commercial structures. A general contractor company oversees and builds commercial construction projects. General contractors engage in various construction fields, including commercial and residential construction. Residential building projects are different in multiple construction business sectors because they are for individual housing projects. Even if a general contractor is trained and competent in residential and commercial construction, they may only work in one of these areas.