Add a contingency buffer to your base budget so surprises do not derail the project.
A contingency fund is money set aside for the unexpected: rot behind a sink, outdated wiring, a change in plans, a price increase on a special-order item. This calculator adds a percentage buffer to your base budget and then adds costs that sit outside the contractor's contract, such as a temporary kitchen setup and extra meals out.
Formula: contingency = base budget x percentage. Total to have available = base budget + contingency + extra costs. For example, with a $30,000 base budget, a 15 percent buffer and $1,500 of extra living costs, the contingency is $4,500 and the total to have available is $36,000. These inputs are illustrative.
Many remodeling professionals suggest holding back somewhere around 10 to 20 percent for projects in older homes or those that move plumbing, gas lines or walls. A newer house with a simple like-for-like swap may need less. There is no official rule, so choose a number that fits your home's age and your comfort with risk.
Limits: a buffer is not a license to spend. Treat it as untouchable until a real, documented issue appears, and require any change to be agreed in writing as a change order before work proceeds.
Mistakes and FAQ
Build a kitchen remodel budget that survives surprises: how much contingency to hold, how allowances and change orders work, and a line-by-line budget template.
Mistakes and FAQ
The most common kitchen remodel mistakes, from skipping a contingency to ordering before measuring, with practical ways to prevent each one.
