In property rights, what is the legal term for the share of rights held by an owner?

The legal term that best describes the share of rights held by an owner in relation to property is referred to as "Ownership Interest." This term encompasses the rights and privileges that come with owning a property, such as the right to use, sell, lease, or develop the property. Each property owner has a unique set of ownership interests that define their rights and responsibilities concerning the property. Understanding ownership interest is crucial in real estate, as it dictates how properties can be utilized and the extent of control an owner has over their property.

While options like "Bundle of Rights" outlines the various rights (like air, surface, and subsurface rights) associated with property ownership, it does not specifically refer to the owner's financial stake or interest. "Title" denotes legal ownership of property but does not explicitly address the share or extent of rights held. "Fractional Interest" implies a specific part or share of ownership, often used in co-ownership arrangements. However, it doesn't capture the comprehensive nature of rights that an owner has, which is more accurately defined by ownership interest.