Interactive planning tool
Renovation budget calculator
Build a planning total that keeps the base quote separate from reserves and owner costs. Your inputs stay in your browser and are not stored.
- Base quote: $30,000
- Contingency reserve: $3,000
- Costs outside quote: $6,500
This is scenario math, not a cost estimate. It does not predict hidden conditions or confirm what your contract includes.
How to use the result
Run at least three scenarios. Start with the signed or proposed quote, then change only one assumption at a time. Keep the contingency under your control; it is not permission for a contractor to spend it. Replace every placeholder with a researched amount before committing to a project.
What this tool intentionally does not do
It does not estimate local labor or material prices, select a contractor, determine permit requirements or assess your property. Those inputs vary too much for a generic calculator to state responsibly.