A construction contractor is a firm or an individual that completes construction projects on a contractual basis.

The contractor is hired directly by builders or third-party employers to provide independent professional services. These services are typically rendered as part of a per-project contractual agreement with the hiring firm, or through an agreement to provide a specific service for a given duration of time.

Construction contractors allow the hiring firm to procure workers who have the skills to safely carry out and complete specialized work. The hiring firm may need contractors in order to compensate for their lack the expertise or manpower.

Firms classified as construction contractors can include single-person businesses, small firms, and multinational firms in the “engineering, procurement, and construction” (EPC) industry.