In France there's a practice that exists since the Middle Ages, it's called viager. You can sell a property and retain the right to live in it and get a modest

In France there's a practice that exists since the Middle Ages, it's called viager. You can sell a property and retain the right to live in it and get a modest down payment much smaller than in regular real estate transactions (sometimes zero), followed by monthly payments that meet your living expenses. If you die early, the buyer gets the property for the price of the initial down payment which doesn't exceed 30% of the price, if you live for a really long time the monthly payments can easily exceed the price of the property. So effectively, it's a gamble on the lifespan of the seller.