E Estimation of construction costs is important in the world of the construction industry.Estimated costs based on specifications and work drawings prepared by the owner must guarantee that the work will be carried out properly and can be used as a reference for the implementation of efficient physical development with appropriate and measurable implementation methods.However, in actual application as well as in previous studies, they have not examined and reached in terms of discrepancies in specifications in the selection of heavy equipment, precise and measurable implementation methods, as well as excessive manpower and a lack of safety guarantees for workers in carrying out construction activities.Therefore, it is necessary to choose the right implementation method and in accordance with field conditions to obtain accurate analysis results.The AHSP method is still general or given and there is no significant difference between the 2016 AHSP and the 2022 AHSP as an example of the coefficient figures for labour, equipment and materials, then the basic unit price is still general in nature and does not adjust the basic unit price of work at project activity locations . By using the AHSP method as a reference for calculating construction project cost estimates which are still general in nature in a project work, it is sometimes irrelevant to the reality of the field conditions of construction activities.