Calculator · Free
Project Contingency Calculator
Project type, home age and scope certainty → recommended contingency percent.
Recommended contingency
19.0%
Of hard construction budget, held until late in project
- Hidden water damage or mold
- Code upgrades when walls open
- Owner selection changes
- Schedule slip carrying labor overhead
What this assumes
- Illustrative defaults — replace with your actual costs and local rules.
Understanding the result
How to use this
Project type, home age and scope certainty → recommended contingency percent.
Common questions
Is this free?
Yes — runs in your browser, no account required.
You may also need
The next decision usually follows directly from this one.