I’d say $500 to $1,000, depending on how many people live in the house. Admittedly, I often have much less than that, I very rarely use cash. I would include the money in my wallet as cash in the house.
For me it depends on the season. Hurricane season I’m much more aware of being prepared if the electricity goes out for days, which is the main reason for the cash. Even a daily storm can create disruptions in utilities and the ability to process credit cards. We rarely lose electricity, but nice to be prepared.
Being prepared includes being able to buy food, gas, and lodging.
Up north, I might be more in tune with winter weather.
Whenever I sit in on a lecture about moving towards a cashless society I think it’s crazy. The need for cash in emergencies is real. Additionally, it’s a convenience when shopping and the credit card service is down.