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Types of Construction Estimates (Conceptual to Definitive)
Cost estimating evolves through various levels of detail as the project matures — from broad conceptual figures to precise contract bids.

Examples
- Conceptual Estimate: ₹1,200 per sq. ft. for a school building.
- Preliminary Estimate: ₹2.5 Cr. based on schematic design and material assumptions.
- Definitive Estimate: ₹2.35 Cr. after complete BOQ and vendor quotations.
As the project design matures, the accuracy increases and the uncertainty decreases.