What does estoppel prevent a person from doing?

Estoppel is a legal principle that serves to prevent an individual from making claims or taking a position in a legal context that contradicts what has been established as the truth through previous actions or statements. This ensures fairness and prevents inconsistency, as parties are expected to honor their prior commitments or representations.

For instance, if someone has accepted a certain set of facts and acted upon them to the knowledge of another party, they cannot later deny those facts if it would unfairly disadvantage the other party. This concept is crucial in various areas of law, including contracts and property disputes, to maintain trust and integrity in dealings.

The other options could misinterpret the applications of estoppel. Changing one's mind about a contract might not directly relate to estoppel; rather, it involves considerations of contract law and mutual agreement. Similarly, transferring property ownership is a separate legal matter that is not governed by the principle of estoppel. Taking legal action against a lender does not necessarily correlate with what estoppel prevents, which is primarily about preserving the integrity of previously accepted truths.