The Contractors analyze the plans and specifications of a construction project to generate a cost estimation. In order to find out accurate cost estimation, the contractors generally follow the activities like evaluating the project plans, application of appropriate construction techniques, generating an itemized list of the project requirements. After creating the lists successfully, a contractor will organize the different resources and costs for every facet of building to obtain a perfect construction cost estimation.

As a first step, the contractors should have made a careful analysis of essential activities for each task of the new Construction Work. In this regard the most popular and useful method is to distribute the tasks of construction work in proportion to the various specialties. As for example Civil - Piping & Equipment - Electrical - Instrumentation and Control - Pre-commissioning and commissioning.

After that segregates each skill at diversified tasks as well as different sub items. ( For small works, these tasks can being do with only one person having a huge experience at Construction work).