There are several reasons why construction projects may go wrong: 1. Poor planning: Insufficient attention to detail in the initial planning stages can lead to delays, cost overruns, and errors in the construction process. 2. Inadequate communication: Lack of effective communication between the project team members, including architects, contractors, subcontractors, and suppliers, can result in misunderstandings, conflicts, and delays. 3. Inaccurate cost estimation: If the initial budget estimation is incorrect or insufficient, it can lead to budget overruns, compromising the project's feasibility and completion.