1. Tools that may be part of costs estimation are cost indexes. 2. His cost estimation model COCOMO now COCOMO II-is standard software engineering knowledge. 3. This is the only published non-IGA country cost estimation identified. 4. SLOC serves as a main factor for cost estimation techniques. 5. In cost engineering, cost estimation is a basic activity. 6. Such underestimated costs are common during cost estimation , particularly near the beginning of a project. 7. Project Cost Estimation is conducted at the planning phase. 8. It offers project scoping / development, cost estimation , construction oversight through Engineering and Construction Management. 9. A cost engineering reference book has chapters on capital investment cost estimation and operating cost estimation . 10. A cost engineering reference book has chapters on capital investment cost estimation and operating cost estimation.