If you own your house outright, you can put it up as collateral on a loan. As long as your luck holds you can make money off of that asset without selling it.

(However houses, as assets, leak a lot of worth in the form of upkeep and property taxes. Most times it’s better than rent, but not in all scenarios. And getting a cheaper house and investing the rest often gets better returns, once all costs and inflation are accounted for.)