A remodeling contingency is money set aside for unexpected costs that weren’t included in the original project budget. For many remodeling projects, a contingency of roughly 10% to 20% of the planned construction budget is a reasonable starting point, depending on the project and how much uncertainty is involved.
Renovating an existing home can uncover conditions that weren’t visible before construction began, so having money reserved for surprises can help keep an unexpected problem from derailing the entire budget.
HOW MUCH SHOULD YOU SET ASIDE FOR UNEXPECTED REMODELING COSTS?
A relatively straightforward project with a well-defined scope may justify a contingency closer to the lower end of the range. Older homes, extensive renovations, structural changes, or projects involving significant demolition may warrant a larger reserve.
Your contingency shouldn’t be treated as extra money available for upgrades. Keep it separate from the amount you’ve planned for the original scope.
WHAT CAN A REMODELING CONTINGENCY COVER?
Unexpected conditions can include hidden water damage, deteriorated framing, outdated wiring or plumbing, structural issues, or other problems discovered after walls, floors, or ceilings are opened.
Not every unexpected cost can be predicted. The purpose of the contingency is to give your budget room to absorb reasonable surprises without immediately forcing you to borrow more money or eliminate other planned work.
HOW CAN YOU PROTECT YOUR REMODELING BUDGET?
Build the contingency into your budget before construction begins rather than hoping nothing unexpected happens. As the project progresses, track approved changes and additional costs so you know how much of your reserve remains.
If the contingency isn’t needed, that’s money you haven’t spent—not an invitation to expand the project.
BUILD A BETTER REMODELING BUDGET
The Remodel Planning System helps you organize your remodeling budget, project decisions, timelines, and contractor conversations so you can plan more realistically before construction begins.

