Quick answer
The commonly cited threshold is a net worth above $500,000, though we’d frame it differently: if a lawsuit could realistically reach your assets beyond what your home and auto policies cover, umbrella insurance is worth having regardless of the exact number. For most Ohio homeowners in the high-value home insurance category, that threshold is already well behind them.
The more useful question isn’t “am I rich enough to need this,” it’s “what would happen if a judgment exceeded my current coverage,” which is what we walk through during a full asset review.