Priorities and overreaching
The mechanics of priority contests and the operation of overreaching in registered and unregistured conveyancing.
Overview
Priority and overreaching are the two principal mechanisms by which English land law reconciles competing claims to the same piece of land. Both doctrines address the fundamental conveyancing tension between, on one hand, the protection of incumbrancers and occupiers who have acquired rights in land and, on the other, the facilitation of transactions and the security of purchasers who take title in good faith for value.
Priority determines the rank order in which competing interests take effect. Where two or more persons assert rights over the same land, priority rules answer the question: whose right prevails? The modern law is dualist: registered title is governed by the Land Registration Act 2002 (LRA 2002), while unregistered title remains subject to the residual common law and equitable priority maxims, as modified by the Land Charges Act 1972 (LCA 1972). In registered land, priority turns principally on the date of registration (s 28 LRA 2002) and the overriding status of certain interests (Sch 3), subject to the doctrine of notice for interests created before first registration. In unregistered land, the classic rule—nemo dat quod non habet—is overlaid by the equitable maxim 'where the equities are equal, the first in time prevails' and by the land charges registration scheme for certain categories of incumbrance.
Overreaching, by contrast, does not resolve a priority contest on its merits; rather, it transmutes the interest from the land itself into the capital money arising on the transaction. Sections 2 and 27 of the Law of Property Act 1925 (LPA 1925) provide that where a conveyance is made by trustees who hold on a trust of land (or in the exercise of a trust for sale) and the capital money is paid to at least two trustees or a trust corporation, equitable interests under the trust are overreached and attach instead to the proceeds. The purchaser takes free of those interests, even if he had actual notice of them (City of London Building Society v Flegg [1988] AC 54). Overreaching thus represents a third route—alongside registration and the bona fide purchaser doctrine—by which a transferee may defeat prior rights.
The interplay between priority and overreaching is subtle. Overreaching operates in limine: if the statutory conditions are met, the equitable interest is lifted off the land before any question of priority arises. Where overreaching does not apply—because the trustees' receipt requirement is not satisfied, or because the interest is not within the statutory class—priority rules determine whether the transferee takes subject to the incumbent. These two doctrines therefore operate sequentially, not alternatively, and it is critical in problem scenarios to consider overreaching first. This note traces the historical foundations of both regimes, expounds the current statutory framework, and examines the leading authorities and academic controversies that dominate tutorial discussion and examination papers.
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