Best Cost Methods for the various phases of design


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    Adelina Koleva (Edited )

    Programming & Pre-Design:

    • Area, Volume, or other Single-Unit Rate Methods
      Based on cost per square foot or cubic foot, cost per unit, or historic data from similar projects of similar size

    Schematic Design:

    • Elemental (Assemblies & Sub-Systems)
      Based on cost per functional categories like systems, partitions, foundations, finishes all together

    Design Development & Construction Documentation

    • Quantity Survey Method
      Extremely detailed, calculating the exact number of each building element/component (e.g. number of bricks)

    Construction Administration
    No cost estimation required according to B101, bidding has already occured, the contractor's work determines the real project cost.

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