California IDEX Practice Exam 2026 – Comprehensive Test Prep

Question: 1 / 400

Which method provides the most accurate estimate of project cost?

square footage

functional unit

parameter

quantity takeoff

The quantity takeoff method provides the most accurate estimate of project cost because it involves a detailed breakdown of the materials, labor, and overhead costs required for a project. This approach allows estimators to assess the specific quantities of each item necessary for the completion of the project based on the construction drawings and specifications. As a result, this meticulous examination leads to a highly detailed and precise estimation of costs that reflects actual project requirements.

In contrast, methods like square footage, functional unit, and parameter estimates are generally based on broader calculations or assumptions. While they can be useful for providing quick estimates or budgets, they lack the granularity and specificity that quantity takeoff offers, which is essential for establishing an accurate project cost.

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