This document investigates delays occurring in the construction of commercial buildings and road projects. It identifies common causes of construction delays through a questionnaire survey of contractors. Major causes included miscommunication between parties, lack of resources, unrealistic scheduling, weather issues, and changes to design documents. The study found that contractors were responsible for 44% of delays on average, while owners, consultants, and government agencies also contributed. Proper planning, scheduling, coordination between parties, and timely payments can help minimize delays.