What percentage contingency is typically recommended for a well-defined commercial construction project?
Correct Answer
D) 5-10%
For well-defined commercial projects with complete drawings and specifications, a 5-10% contingency is standard practice to cover unforeseen conditions and minor changes.
Why This Is the Correct Answer
A 5-10% contingency is the industry standard for well-defined commercial construction projects because it provides adequate coverage for unforeseen conditions, minor design changes, and field adjustments without being excessive. This percentage reflects the balance between protecting against cost overruns while maintaining competitive pricing. Well-defined projects with complete drawings and specifications have fewer unknowns, so the contingency can be lower than projects with incomplete documentation. This range is widely accepted by owners, lenders, and construction professionals as reasonable and necessary.
Why the Other Options Are Wrong
Option A: 2-3%
2-3% contingency is too low for commercial construction projects and would not provide adequate protection against typical unforeseen conditions, material price fluctuations, or minor scope changes that commonly occur even in well-defined projects.
Option B: 25-30%
25-30% contingency is extremely high and would only be appropriate for highly speculative projects, early design phases, or projects with significant unknowns such as major renovations or hazardous material remediation.
Option C: 15-20%
15-20% contingency is excessive for well-defined commercial projects and would typically only be used for projects with incomplete designs, high uncertainty, or complex renovation work where many unknowns exist.
Memory Technique
Think 'Well-defined = 5-10' - the better defined the project, the lower the contingency needed, with 5-10% being the sweet spot for commercial work.
Reference Hint
Look up contingency allowances in construction estimating references or project management sections of contractor exam prep materials
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