Definition
A power of sale is a contractual authority granted by a property owner — typically a borrower or mortgagor — to another party — typically a lender, trustee, or mortgagee — to sell the property without court involvement upon a specified triggering event, most commonly default on a debt obligation.
In the mortgage and deed of trust context, a power of sale clause in the security instrument authorizes the lender (or a designated trustee) to conduct a nonjudicial foreclosure sale if the borrower defaults. This bypasses the judicial foreclosure process entirely: no lawsuit is filed, no court supervises the sale, and no redemption period of the judicially-supervised variety is required, though statutory rights of redemption may still apply depending on jurisdiction.
The term also appears outside the foreclosure context. A power of sale may be granted to:
1. A trustee under a trust instrument, authorizing the trustee to sell trust assets without seeking court approval.
2. An agent acting under a power of attorney, where the instrument expressly grants authority to convey real or personal property.
3. A personal representative (executor or administrator) of an estate, either by will or by statute, to sell estate property in the course of administration.
In each context, the unifying principle is the same: the power of sale is a delegated authority to transfer ownership of property, derived from an instrument rather than from a court order.
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Common Confusion
Power of sale is frequently confused with the foreclosure process itself. The power of sale is the contractual right that makes nonjudicial foreclosure possible — it is the source of authority, not the procedure. A lender who holds a mortgage without a power of sale clause cannot proceed nonjudicially; the instrument itself must grant the right. Separately, researchers should not conflate power of sale foreclosure with strict foreclosure, which extinguishes the mortgagor's equity without any sale at all.
Power of sale also differs from a power of attorney. A power of attorney is a broader agency instrument; a power of sale is a specific, limited grant of selling authority that may appear within a power of attorney, a deed of trust, or a trust instrument, but is not synonymous with any of them.
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Core Elements
For a power of sale in a mortgage or deed of trust to be operative, the following elements are generally required:
1. Express grant in the instrument. The power must be clearly stated in the security document. Courts do not imply powers of sale from general language.
2. Valid security interest. The underlying mortgage, deed of trust, or other security instrument must be validly executed and recorded.
3. Triggering condition. The event authorizing exercise of the power — typically default — must have actually occurred.
4. Statutory compliance. In jurisdictions permitting nonjudicial foreclosure, statutes prescribe notice requirements, waiting periods, publication, and sale procedures. Noncompliance can void the sale.
5. Good faith exercise. The power must be exercised in good faith and for the purpose for which it was granted. A sale designed to chill bidding or otherwise disadvantage the grantor may be challenged.
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Recognized Forms
/SUBTYPES
Power of sale in deed of trust states. The most common American form. A three-party arrangement (borrower, trustee, lender) in which the trustee holds legal title and exercises the power of sale upon lender's instruction after default.
Power of sale in mortgage states. Less common. Some states allow mortgage instruments to contain power of sale clauses permitting the mortgagee to sell without judicial process, though many mortgage-theory states require judicial foreclosure regardless.
Testamentary power of sale. Granted by a testator in a will, authorizing the executor to sell estate property during administration without petitioning the probate court.
Trust instrument power of sale. Granted to a trustee, permitting disposition of trust assets in the course of trust administration or as directed by the trust terms.
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Why It Matters in Research
The primary research significance of power of sale is jurisdictional: whether a state permits nonjudicial foreclosure, and on what terms, is entirely a function of state statute and recorded instrument. Roughly half of U.S. states use deed of trust structures with power of sale as the dominant foreclosure mechanism; others require judicial foreclosure. Researchers cannot assume that doctrines developed in one state's case law apply elsewhere.
Historical sources present a specific trap. Nineteenth-century treatises and dictionary entries focus heavily on the power of sale as a feature of trusts and testamentary instruments — the mortgage application was less dominant in early American practice. Black's 2nd Ed. reflects this balance, and the fragment preserved in the source material addresses powers appurtenant to life estates and powers in gross, language drawn from the English conveyancing tradition. Researchers using historical sources to understand mortgage foreclosure practice may find the coverage thin or misaligned with modern usage.
The constitutional dimension deserves attention. Because power of sale foreclosure involves no court supervision, due process challenges have arisen — particularly regarding the adequacy of notice to junior lienholders, occupants, and guarantors. The Law Mind encyclopedia entries linked above address these due process concerns directly, and researchers working on foreclosure challenges should consult that material.
In the trust and estate context, watch for the distinction between a power of sale that is mandatory (the trustee must sell), discretionary (the trustee may sell), and contingent (the trustee may sell only upon specified conditions). The scope of the power determines what the trustee can do without court approval and what requires petition.
Recorded instrument searches matter. A power of sale is only as strong as the instrument creating it. Title examiners and researchers tracing a chain of title must confirm that the power was properly granted, that the grantor had authority to create it, and that any exercise of the power strictly complied with the instrument's terms and applicable statute. A defectively exercised power of sale may produce a voidable or void conveyance.
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Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) addresses the concept of powers generally, including the distinction between powers appurtenant (attached to an estate held by the donee) and powers in gross (held by someone with an interest in the estate at the time of the deed's execution but not derived from that interest). The surviving fragment in the source material reflects this classical taxonomy, drawn from English real property doctrine, and does not directly address the power of sale in its modern American foreclosure context.
This is an instructive gap. The English conveyancing tradition — from which American trust and estate usage of the power of sale derives — treated the power primarily as a feature of trust instruments and settlements. The mortgage foreclosure application, now the term's dominant American meaning, developed substantially through nineteenth and twentieth century American statutes enabling nonjudicial foreclosure. Historical dictionaries and treatises will illuminate trust and estate usage well; for foreclosure doctrine, state statutes and annotated codes are more reliable primary sources than the classical legal dictionaries.
Where historical sources are useful: the elements of a valid power (express grant, proper donee, scope limitations) are treated with care in the English tradition and carry forward into American trust law. The requirement that the power be exercised strictly within its terms — not merely substantially — is a principle with deep roots in the historical sources and remains operative today.
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Jurisdictional Note
Whether power of sale foreclosure is available, and how it must be conducted, is entirely state-specific. Deed of trust states (including California, Texas, Virginia, and North Carolina) use nonjudicial power of sale foreclosure as the default mechanism. Mortgage-theory states (including Florida and New York) generally require judicial foreclosure regardless of instrument language. A handful of states permit both methods. Statutory notice, publication, and reinstatement requirements vary significantly and are subject to frequent legislative amendment.
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Encyclopedia Cross-Reference
Mortgages — Foreclosure — Non-Judicial Foreclosure (Power of Sale) (The Law Mind Property Law Encyclopedia)
Non-Judicial Foreclosure — Power of Sale, Statutory Requirements, and Due Process Concerns (The Law Mind Real Estate Transactions & Construction Encyclopedia)
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