What is a typical contingency or waste allowance in estimates?

• A. A percentage added to cover waste, mistakes, and unforeseen conditions.
• B. A fixed amount to cover taxes.
• C. A marketing fee.
• D. A discount for early purchase

Answer: (A)

In estimating, a contingency or waste allowance is a percentage added to the base estimate to cover waste, mistakes, and unforeseen conditions. This is the best choice because it directly accounts for the unpredictable aspects of painting work—things like material waste from cutting and trimming, breakage, rework due to imperfect prep, and unknowns that show up once work begins.

It’s not a fixed tax amount, a marketing fee, or a discount for early purchase, so those options don’t fit the purpose of handling risk and waste on a project. In practice, the contingency is often a modest percentage (commonly around 5% to 10%, depending on project complexity and site conditions) added to the direct costs to keep the estimate realistic if conditions change.