Comprasion of different cost methods for the public works tendered within the scope of Düzce Special Provincial administration

In this study; it is aimed to determining, comparing and evaluating the cost estimation performances of the construction unit price method (BFY) and the approximate cost of construction (Unit Area Cost Method), which are widely used in the construction cost estimation of public works and which are considered as the most important databases in tendering and bidding in Düzce County Special Provincial Administration. Conflict in the construction sector leads to a reduction in the profit percentage of contractors. For cost estimation; preliminary estimates of construction works are generally based on assumptions. Therefore, the realization rate of projected costs is low. These inadequacies cause big errors in estimating the costs and durations of the works performed in the sector. This leads to significant losses, especially when the budget is exceeded. Construction unit price method is prepared for the construction project phase. It is known that this method has some problems such as; not being open to technological innovations, unit prices being prepared without taking into consideration the construction environment, some work items not included in the relevant data base and the update period not suitable for the economic conditions of the country. In this study, Unit Price Method-Construction Approximate Costs Comparison has been made in Estimating Construction Cost; and improvement suggestions were made for public administration and private sector.