This chapter delves into the fundamental principles of construction economics and the assessment of financial feasibility for construction projects. It examines the economic factors influencing construction projects, including cost estimation, budgeting, and financial analysis. Through theoretical frameworks and practical examples, readers gain insights into the key components of construction economics, such as supply and demand dynamics, inflation, and market trends. The chapter also explores techniques for evaluating the financial viability of construction projects, including net present value (NPV), internal rate of return (IRR), and payback period analysis. Additionally, it discusses considerations for assessing risk and uncertainty in financial feasibility studies, such as sensitivity analysis and scenario planning. By understanding the principles of construction economics and financial feasibility, construction professionals can make informed decisions, optimize project financial performance, and mitigate financial risks in construction projects.