Which term represents an ownership claim based on significant financial investment in a property?

The term that represents an ownership claim based on significant financial investment in a property is equity. Equity refers to the value of an ownership interest in a property after all liabilities, such as mortgages and liens, have been accounted for. Essentially, it is the difference between the current market value of the property and the amount owed on any mortgages. When a person invests financially in a property, they build equity, which reflects their stake and ownership rights in that asset.

This concept is vital in real estate and property law, as it often influences decisions related to selling, refinancing, or taking out loans using the property as collateral. It denotes more than just ownership; it encompasses the financial stake and the return one could expect upon selling the property or receiving income from it.