Valuation is estimating the fair price or value of property like buildings, land, etc. It considers factors like construction, location, demand. Valuations are needed for tasks like buying/selling, taxation, rent fixation, loans. Methods include calculating capitalized value from net income after deducting repairs, taxes, management costs, sinking funds from gross income. Land values are influenced by demand, population, costs, purposes, policies, infrastructure projects. Depreciation and obsolescence lower values over time.