This is one of the most common situations homeowners find themselves in. While you may have done your homework on how much your materials, products, labor, and miscellaneous remodeling components will cost, there always should be a budget for unforeseen situations. Many remodeling projects have the potential to uncover circumstances that will cannot be caught prior to demolition. Opening up walls can often lead to electrical, structural or plumbing surprises. Remodeling older homes can often unveil mold, pipes leaking or rotting and deteriorating wood.