A construction estimation service NYK is an estimate of the cost of a building project. This is typically done by a construction manager. The cost of the project is broken down into a number of elements, such as the cost of materials, labor, and overhead. The estimate is based on the quality of the materials and the level of skill required to complete the job. It is then broken down into a budget for each element. This process is vital to the success of any construction project. Construction estimation can be done in a variety of ways.