Property Deeds registration is a land management system whereby all important instruments which relate to the common law title to parcels of land are registered on a government-maintained register, to facilitate the transfer of title. The system has been used in some common law jurisdictions and continues to be used in some jurisdictions, including most of the United States.

It is being replaced by Torrens systems in many jurisdictions. Australia, Ireland as well as most Canadian provinces have converted from deeds registries to Torrens titles. Some Canadian provinces have never operated a deeds registry and have always used Torrens titles. Other Canadian provinces which have converted from a deeds registry to Torrens titles have operated both systems in conjunction until the Torrens system gradually superseded the deeds registry system, as was the case in Nova Scotia and New Brunswick during the 2000s. In the Canadian province of Ontario, electronic registration led to Ontario's version of Torrens title covering almost all land, but the past deeds registration still governs some issues. Hong Kong and the Canadian provinces of Quebec, Newfoundland and Labrador and Prince Edward Island are the only provinces left which still operate a deeds registration system.

In contrast to the Torrens system in which basically the one who registered in a land registry as owner of a piece or parcel of land has an indefeasible title of the land, deeds registration system is merely a registration of all important instruments related to that land. In order to establish one's title to the land, a person (or usually their purchaser's attorney) will ascertain, for example:

all the title documents have been properly executed,

"a chain of title" is established, for example, the proper ownerships from the granting of the land from the government to the current owner, and,

there are no encumbrances on the land that probably will harm the title of the land.

Estoppel is a common law doctrine which, when it applies, prevents a litigant from denying the truth of what was said or done. The doctrine of estoppel by deed (also known as after-acquired title) is a particular estoppel doctrine in the context of real property transfers. Under the doctrine, the grantor of a deed (generally the seller of a piece of real property) is estopped (barred) from denying the truth of the deed. The doctrine may only be invoked in a suit arising out of the deed, or involving a particular right arising out of the deed.

While rooted in warranty deeds, estoppel by deed has been extended to affect quitclaim deeds if the deed represents that the grantor actually had title. 

Generally, a quitclaim is a formal renunciation of a legal claim against some other person, or of a right to land. A person who quitclaims renounces or relinquishes a claim to some legal right, or transfers a legal interest in land. Originally a common law concept dating back to Medieval England, the expression is in modern times mostly restricted to North American law, where it often refers specifically to a transfer of ownership or some other interest in real property.

Commonly, quitclaims are used in situations where a grantor transfers any interest they have in property to a recipient (the grantee) but without offering any guarantee as to the extent of that interest. There may even be no guarantee that the grantor owns the property or has any legal interest in it whatsoever. Specific situations where a precise definition of the grantor's interest (if any) may be unnecessary include property transferred as a gift, to a family member, or into a business entity.

The legal instrument by which the transfer is effected may be known as a quitclaim deed or quitclaim agreement. Details of the instrument itself, and the typical circumstances of use, vary by U.S. state.