What is the typical contingency percentage range for a well-defined commercial construction project?
Correct Answer
D) 5% to 10%
For well-defined commercial projects with complete drawings and specifications, contingency typically ranges from 5% to 10%. Higher percentages are used for projects with more uncertainty or incomplete design.
Why This Is the Correct Answer
For well-defined commercial construction projects with complete drawings, specifications, and minimal design uncertainty, the industry standard contingency range is 5% to 10%. This percentage accounts for minor unforeseen conditions, small design changes, and typical construction risks while reflecting the reduced uncertainty that comes with thorough project definition and documentation.
Why the Other Options Are Wrong
Option A: 25% to 30%
25% to 30% represents an extremely high contingency appropriate only for highly uncertain projects, conceptual estimates, or projects with major unknowns. This percentage would be financially imprudent for well-defined commercial projects and could make projects uncompetitive or unfeasible.
Option C: 1% to 3%
1% to 3% is too low for commercial construction projects. This minimal contingency might be appropriate for very simple projects or final construction phases, but doesn't adequately cover the typical risks and uncertainties inherent in commercial construction, even with well-defined scope.
Memory Technique
Remember 'FIVE to TEN for DEFINED' - well-defined commercial projects use 5-10% contingency, like counting on your fingers.
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