The cost of a construction project includes the following contents: investment estimation Investment estimation refers to the prediction and estimation of the future total cost of a construction project by the construction unit or the consulting organization entrusted by the construction unit in the process of investment decision-making, based on the existing data and using certain methods. Design budget Design budget refers to the economic document that the design unit compiles and determines the total cost of a construction project from preparation to completion, delivery to production or use under the control of investment estimation in the preliminary design stage according to the preliminary design or expanded design drawings and descriptions, budget quota, equipment and material prices and other materials. In the technical design stage, with the modification and change of construction scale, structural nature and equipment type, the preliminary design budget is also adjusted accordingly, which is the revised budget. Construction drawing budget Construction drawing budget refers to the economic document that determines the project cost according to the budget quota and cost documents after the construction drawing design is completed and before the project starts. Project settlement Project settlement refers to the settlement documents that the contractor handles the completed project price with the construction unit in accordance with the contract. Final accounts for completion The final accounts for a construction project are documents compiled by the construction unit to reflect the actual cost and investment effect of the construction project, an important part of the completion acceptance report, a comprehensive reflection of the economic effect of the capital construction project, and a basis for verifying the value of newly added fixed assets and handling the delivery.