Rehab Budget & Contingency Calculator
Renovation budget with line-item buffer, contingency percentage and the overrun-adjusted all-in number to underwrite.
Formula
Renovations overrun because walls hide surprises and change orders compound — underwrite the contingency-loaded number, and if the deal only works at the bare bid, it doesn't work. Structural and pre-1960 properties earn the 25% tier.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need rehab budget & contingency calculator results fast? Analysts, founders, traders and finance professionals use the Rehab Budget & Contingency Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Rehab Budget & Contingency Calculator
Renovation budget with line-item buffer, contingency percentage and the overrun-adjusted all-in number to underwrite. Renovations overrun because walls hide surprises and change orders compound — underwrite the contingency-loaded number, and if the deal only works at the bare bid, it doesn't work. Structural and pre-1960 properties earn the 25% tier. The governing relationship is budget = bid × (1 + contingency) + permits. The Rehab Budget & Contingency Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Rehab Budget & Contingency Calculator
- 1Enter Contractor bid total (currency), Contingency (%), Permits + design fees (currency), Historical overrun on your projects (%) into the Rehab Budget & Contingency Calculator.
- 2The result is computed automatically using budget = bid × (1 + contingency) + permits — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Rehab Budget & Contingency Calculator?
- ✓Computes rehab budget & contingency calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Rehab Budget & Contingency Calculator?+
Rehab Budget & Contingency Calculator uses budget = bid × (1 + contingency) + permits. Renovations overrun because walls hide surprises and change orders compound — underwrite the contingency-loaded number, and if the deal only works at the bare bid, it doesn't work. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Rehab Budget & Contingency Calculator need?+
Enter Contractor bid total (currency), Contingency (%), Permits + design fees (currency), Historical overrun on your projects (%) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Rehab Budget & Contingency Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Rehab Budget & Contingency Calculator?+
Structural and pre-1960 properties earn the 25% tier.
What is the Rehab Budget & Contingency Calculator based on?+
The method follows authoritative sources: Construction management — contingency standards. The formula and references are shown on the page so you can verify and cite the result.
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