Bundle of rights
The bundle of rights is a metaphor to explain the complexities of property ownership. Law school professors of introductory property law courses frequently use this conceptualization to describe "full" property ownership as a partition of various entitlements of different stakeholders. The bundle of rights is commonly taught in US first-year law school property classes to explain how a property can simultaneously be "owned" by multiple parties. The term, "bundle of rights," likely came into use during the late 19th century and continued to gain ground thereafter. Prior to that, the idea of property entailed more the  owner's dominion over a thing, placing restrictions "on others" from interfering with the owner's property. "Bundle of rights," however, implies rules specifying, proscribing, or authorizing actions on the part of the owner. Ownership of land is a much more complex proposition than simply acquiring all the rights to it. It is useful to imagine a bundle of rights that can be separated and reassembled. A "bundle of sticks" - in which each stick represents an individual right – is a common analogy made for the bundle of rights. Any property owner possesses a set of "sticks" related directly to the  land. For example, perfection of a mechanic's lien takes some, but not all, rights out of the bundle held by the owner. Extinguishing that lien returns those rights or "sticks" to the bundle held by the owner. In the United States (and under common law) the fullest possible title to real estate is called "fee simple absolute." Even the US federal government's ownership of land is restricted in some ways by state property law. Variations on the concept. Variations on the division between public and private property use can be found throughout the world. While the bundle of  rights concept is strongly rooted in common law, there are comparable ideas in civil law systems and religious law systems. National, sub-national, and municipal laws strongly influence what title owners can do with their property in terms of physical development. Quasi-governmental bodies (such as utility companies) are also permitted to create easements across private property. Historically the degrees of individual and community control over real property have varied greatly. The differences between capitalism, despotism, socialism, feudalism, and traditional societies often define different standards for land ownership. The bundle of rights concept looks much different when examined by different  types of societies. For instance, a laissez-faire government would allow a much different bundle of rights than a communist government. Applications. Community land trusts and land banking are examples of efforts to rearrange the bundle of rights. This is typically done by dividing the responsibilities of ownership and management from the rights to use the property. A typical community land trust strategy is to hold ownership over the land and sell the structural improvements (residential or other buildings) to low-income homebuyers. This allows people to buy a home at a price far below the market rate and to  realize the benefits of their property value improving. Real Estate Investment Trusts divide up the bundle of rights in order to allow commercial investments in real property. These legal structures are becoming more common throughout the developed world. Squatting presents a non-economic way for people to transfer parts of the bundle of rights. Depending on the applicable laws, a squatter can acquire property rights by simply occupying vacant land for an extended period of time. Areas with high concentrations of squatters are sometimes thought of as "informal settlements." Squatters face great instability due to their lack of title and  governmental efforts at "blight removal". "Squatting" can result in "adverse possession", that in common law, is the process by which title to another's real property is acquired without compensation, by holding the property in a manner that conflicts with the true owner's rights for a specified period of time. Circumstances of the adverse possession determine the type of title acquired by the adverse possessor, which may be fee simple title, mineral rights, or another interest in real property. Examples of Component Rights. This table breaks down some of the various rights involved in real property ownership. Several of  these rights can be transferred between different parties through sale or trade. Third parties can obtain the rights to access and profit from several of the "public use" rights without the consent of the title owner. This is often the case with resource extraction companies such as mines. For example, a husband and wife can be owners (technically, title owners) of real property that is also encumbered by a mortgage and a mechanics lien. Their neighbor may have an easement for a utility line, and a license for entry and exit to a nearby plot of land. Airplanes have the  right to fly through their airspace. Constitutionally, the state and federal governments always hold the right to condemnation, also called eminent domain, and the government at multiple levels retains various regulatory rights such as environmental regulation, zoning, and building code enforcement.