Usucaption

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Property law
Part of the common law series
Acquisition of property
Gift  · Adverse possession  · Deed
Lost, mislaid, or abandoned
Treasure trove
Alienation  · Bailment  · License
Estates in land
Allodial title  · Fee simple  · Fee tail
Life estate  · Defeasible estate
Future interest  · Concurrent estate
Leasehold estate  · Condominiums
Conveyancing of interests in land
Bona fide purchaser
Torrens title  · Strata title
Estoppel by deed  · Quitclaim deed
Mortgage  · Equitable conversion
Action to quiet title
Limiting control over future use
Restraint on alienation
Rule against perpetuities
Rule in Shelley's Case
Doctrine of worthier title
Nonpossessory interest in land
Easement  · Profit
Covenant running with the land
Equitable servitude
Related topics
Fixtures  · Waste  · Partition
Riparian water rights
Lateral and subjacent support
Assignment  · Nemo dat
Other areas of the common law
Contract law  · Tort law
Wills and trusts
Criminal Law  · Evidence

Usucaption (Latin usucapio) is a concept found in civil law systems and has its origin in the Roman law of property.

Put simply, usucaption is a method by which ownership of property can be gained by lapse of time (acquiescence). While usucaption has been compared with adverse possession (i.e. squatting), the true effect of usucaption is to remedy defects in title.

The necessity for usucaption arose in Roman law with the divide between res mancipi and res nec mancipi. Res mancipi required elaborate and inconvenient methods to transfer property title (a formal mancipatio ceremony, or in iure cessio). Res nec manicipi could be transferred by traditio (delivery) or in iure cessio.

If res mancipi were transferred by traditio, full ownership would not pass and the recipient would become a bonitary owner. However, if the bonitary owner kept the res in his possession for a certain amount of time (two years for land, one year for chattels) his title would become full title and he could assert himself as dominus.