Accretion
Definition and meaning of Accretion in real estate.
Accretion is the gradual, natural increase of land along a shoreline or riverbank caused by the deposition of sediment by water currents. The newly created land becomes the legal property of the owner of the waterfront parcel.
In more detail
This legal concept is part of riparian rights, which govern the water-related property rights of landowners whose boundaries touch rivers, lakes, or oceans. Accretion must occur slowly and imperceptibly over time, distinguishing it from avulsion, which is a sudden loss or gain of land due to events like a flood.
Property boundaries can shift as a result of accretion, sometimes requiring updated land surveys. Waterfront property owners should monitor these changes because they can affect both the usable land area and the taxable value of the property.
Key facts
| Category | Legal, Titles & Closing |
|---|---|
| Also known as | Alluvion |
| Key requirement | Gradual and natural change |
| Opposite term | Erosion |
Over a period of several years, river currents deposit sand and soil along a homeowner's riverfront property line, gradually expanding their backyard.
Frequently asked questions
Who owns the land created by accretion?
Under common law in most states, the owner of the adjacent waterfront property gains title to the new land created by accretion.
What is the difference between accretion and avulsion?
Accretion is the slow, natural buildup of land, while avulsion is the sudden and violent movement of soil, which usually does not change property boundaries.
Related terms
Sources & references
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