Quantity Take-Off (QTO) is a fundamental process in construction project management and cost estimation. It involves measuring and listing all the quantities of materials, labor, and equipment required to complete a construction project based on drawings, blueprints, and specifications. Quantity Take-Off is the systematic calculation of quantities of various construction items such as concrete, steel, masonry, plastering, painting, plumbing, etc., from project drawings. It forms the foundation for estimating project costs, preparing bills of quantities (BOQ), and managing budget control throughout the project lifecycle.