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What Is Estoppel?

The term estoppel refers to a legal principle that prevents someone from arguing something or asserting a right that contradicts what they previously said or agreed to by law. Put simply, estoppel prevents one person from contradicting an action or statement from the past. It is part of common law and is meant to prevent people from being unjustly wronged by the inconsistencies of another person's words or actions. Some of the most common forms of estoppel include collateral estoppel and promissory estoppel.

How Estoppel Works?

Common law is a form of law that is derived from judicial decisions and precedent. This means that the laws aren't established or based on legislation or statutes. Most of the legal system in the United States was based on English common law. That was until the country's legal system became developed enough to set precedent to shape its own form of common law.

Almost all countries with a judicial system based on common law, including the United Kingdom, Canada, and the United States, have incorporated multiple forms of the doctrine of estoppel in their laws. While the names of the principles differ from country to country, the concept is essentially the same: consistency, in both words and actions, matters.

As noted above, estoppel legally prevents people from making contradictory claims or actions as opposed to something they may have said or done in the past. In simpler terms, estoppel ensures that a person stays true to their word and doesn't unfairly damage someone else. So if Person A must adhere to their word if they make a promise to Person B and later rescind it. Estoppel can take many different forms, the most common of which are listed below.

Types of Estoppel

There are different types of estoppel. The following are some of the most common ones found in the legal arena.

Collateral Estoppel: A collateral estoppel can prevent a person from going back to court as a plaintiff with the same grievance. This prevents legal harassment and abuse of legal resources.

Estoppel by Deed: This type of estoppel prevents a person from denying the truth of any fact stated in a deed they have executed.

Equitable Estoppel: This form of estoppel prevents someone from taking a legal position that is contrary or inconsistent with their previous stance if doing so harms the other party.

Promissory Estoppel: This is commonly found in contract law. Promissory estoppel protects a person who has acted based on another person's reasonable promise, whether in a formal contract or not, and then suffers significant economic loss because the other party did not fulfill that promise.

Other lesser-known forms of estoppel are estoppel by record, estoppel by deed, laches, estoppel by silence, and reliance-based estoppel.

Estoppel Certificate Components

An estoppel certificate is common in the mortgage and commercial real estate industries. It is a document that is often required by lenders and third parties if and when property owners either try to sell their properties (that are tenanted) or refinance a loan.

This document, which is also called an estoppel letter, is generally prepared by the landlord and is signed by the lessee or tenant. In essence, it verifies and asserts claims made to the third party (either a lender or a buyer) by the landlord.

The farmer then made substantial improvements to the property during the term of the lease, with the expectation that he would become its eventual owner. But the owner sold the property to a third party, prompting his neighbor to file a lawsuit, saying he had the right to purchase the farm.

At the trial, the jury awarded the farmer $52,000 in damages to cover the improvements made to the property. Eventually, the case found its way to the Iowa Court of Appeals, which ruled that the option for the farmer to purchase the farm did not need to be included in the written lease agreement to be valid. The court stated that there was a clear and definite promise along with the neighbor's understanding that the farmer was relying on that promise. As such, the property owner was ordered to pay the farmer damages.

How Do You Define Estoppel?

Estoppel is part of common law. It is a legal principle that prevents someone from going back on their word to someone else and unfairly causing damage to someone else. If legal action is taken, the court can stop (or estop) an individual from rescinding a promise made to another party.

What Is an Estoppel Certificate?

Estoppel is common in the mortgage industry and commercial real estate. Also called an estoppel letter or certificate, it entails the use of a document that is signed by a tenant. This document confirms the rental agreement set forth by the landlord. It can be presented to a third party if the landlord or property owner tries to do anything with the property, including selling it or trying to refinance a loan.

What Are the Different Types of Estoppel?

Estoppel comes in many different forms. Some are more common while others are lesser known. They include equitable estoppel, promissory estoppel, collateral estoppel, and estoppel by deed. Others include estoppel by record, estoppel by deed, laches, estoppel by silence, and reliance-based estoppel.

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