No matter how carefully you plan, renovations always come with surprises. Hidden water damage, outdated wiring, or structural issues can pop up once walls and floors are opened. That’s why building a cushion into your budget isn’t optional—it’s essential.
A good rule of thumb is to set aside 10 to 20 percent of your total budget for contingencies. Smaller projects may lean closer to 10 percent, while larger or older-home renovations should aim higher since the risks of unexpected issues are greater.
Another smart move is to prioritize spending. Allocate more money to structural and safety concerns first, since these can’t be skipped. Decorative finishes and upgrades can always be adjusted later if the contingency fund gets used.
Transparency with your contractor also matters. Ask them upfront about common hidden costs they’ve seen in similar projects. Their insight can help you prepare more accurately.
Finally, keep your contingency separate from your main budget. Treat it like an emergency fund. That way, when unexpected expenses arise, you won’t feel like the entire project is unraveling.
In short, budgeting for the unexpected isn’t pessimism—it’s preparation. With a solid cushion, you’ll handle surprises with confidence and keep your renovation on track.