How Much Should a Builder Set Aside for Construction Contingency?
Most builders set aside 10% to 20% of total project cost as a construction contingency, a portion of the budget held in reserve for unexpected expenses like weather delays, labor shortages, or material price increases. Simpler projects typically need less, often around 10%. More complex projects, especially those with site-condition or design uncertainty, may need 20% to 30%. The right number depends on your project's complexity, your historical data from similar builds, and current market conditions.
What is Construction Contingency?
Construction contingency is a portion of your budget set aside to cover surprise expenses that come up during a project. It's a financial buffer, not a padding line item. A well-sized contingency lets a project absorb a shift in material prices or a design change without threatening the timeline or the budget.
What Causes Cost Overruns?
Three sources account for most unplanned costs:
- Inclement weather. Delays from bad weather often require extra spending on labor and materials to get back on schedule.
- Labor shortages. A lack of skilled workers can slow a project down and push wage rates up.
- Material cost increases. Price swings from market demand or supply chain disruption can move a budget significantly.
Statistics show that approximately 98% of construction projects go over budget by more than 30%. That’s a striking figure and a clear call to arms for effective contingency planning. On top of that, surveys reveal that 77% of construction projects experience delays, underscoring the need for contingency reserves to cushion against these common bumps in the road.
How Do You Calculate an Contingency Percentage?
- Start with your total estimated project cost
- Identify the uncertainties specific to your project, such as site conditions or design risk
- Apply 10% to 30% of those uncertainties to arrive at a contingency amount, with straightforward projects landing near the low end and complex projects landing higher
This gives you a contingency figure grounded in your project's actual risk profile, rather than a flat guess.
What Does Effective Contingency Planning Look Like in Practice?
A contingency plan works when it's sized to the project's actual risk. A builder who sets aside a reasonable percentage, tracks it against real conditions, and adjusts as the project moves forward puts themselves in a much stronger position than one who treats contingency as an afterthought.
How Should Builders Manage Contingency Funds During a Project?
- Keep detailed records: Documenting how contingency funds get used supports transparency and makes the spending easy to justify later
- Update financial projections regularly: Checking projections against real-time developments helps you avoid dipping into contingency without a clear reason
- Reassess contingency needs periodically: Conditions change as a project moves forward, and your contingency plan should move with them
Ready to Fund Your Next Project?
Understanding how to size and manage a construction contingency helps keep a project on track and on budget. Builders Capital offers financing built around your pipeline, not a single project. Reach out to talk through your capital needs, or take a look at our Loan Products Overview to find the right fit for your next build.
The above is provided as a convenience and for informational purposes only; it does not constitute an endorsement or an approval by Builders Capital of any of the products, services or opinions of the corporation or organization or individual. The information provided does not, and is not intended to, constitute legal, tax, or investment advice. Builders Capital bears no responsibility for the accuracy, legality, or content of any external content sources.
