Someone tells you:
“When I die, the house will be yours.”
Years later, that person dies. The will leaves the house to someone else.
Can you enforce the promise?
In New Jersey, the answer depends largely on whether there is written evidence of the agreement.
A person can enter into a binding contract concerning what will happen to property at death. But New Jersey law places specific requirements on a contract to make a will, leave property by will, or agree not to change an existing estate plan.
An oral promise alone is generally not enough.
A Will and a Contract Are Different
A will states what a person wants to happen to property at death.
As a general rule, a person remains free to change or revoke a will while that person is alive and has the required capacity.
A contract is different.
Someone may agree that a particular provision will be included in a will or that an existing provision will not be changed.
If that agreement satisfies New Jersey law, changing the will later may breach the contract.
The later will may still be a valid will.
The contractual obligation is a separate issue.
What Does New Jersey Law Require?
New Jersey’s rule appears in N.J.S.A. 3B:1-4.
For agreements made after September 1, 1978, a contract to make a will or devise property, not revoke a will or devise, or die intestate can be established only in one of three ways:
- The will itself states the material provisions of the contract.
- The will expressly refers to the contract and other evidence establishes the terms.
- A writing signed by the decedent provides evidence of the contract.
The important word is writing.
A conversation about a future inheritance does not ordinarily satisfy the statute.
“Dad Promised Me the House”
Consider a common example.
A father tells his daughter:
“If you take care of me for the rest of my life, I’ll leave you the house.”
The daughter spends years helping him.
The father then dies. His will leaves everything equally to his three children.
The daughter may feel that the promise should control.
But if the alleged agreement was made after September 1, 1978, N.J.S.A. 3B:1-4 generally requires written evidence meeting the statute.
The fact that the daughter performed services does not, by itself, turn the oral promise into an enforceable contract to devise the house.
Depending on the facts, she might have some other claim relating to services she provided or benefits the estate received. That is a different legal theory.
It should not be confused with enforcing an oral contract to leave property by will.
A 2023 New Jersey Case Reinforced the Writing Requirement
The New Jersey Appellate Division addressed this issue in In re Estate of Victor Wasowicz.
The claimant alleged that the decedent made an oral promise in 1987 to leave her everything he owned. According to the claimant, she agreed in return to care for her mother and plant a tree in the decedent’s memory.
Nothing was put in writing.
The decedent died intestate in 2022.
The claimant sued the estate and argued that the oral agreement entitled her to the property.
The court rejected the claim.
The Appellate Division explained that N.J.S.A. 3B:1-4 requires written evidence of post-1978 agreements to devise property. Because there was no will or other signed writing evidencing the alleged agreement, the oral promise could not be enforced as a contract to make a testamentary disposition.
The case provides a useful practical rule:
If an inheritance promise matters, put it in writing.
What About an Oral Will?
An oral promise is also not a substitute for a will.
New Jersey provides several ways for a written document to qualify as a will, including certain handwritten documents and, in appropriate circumstances, writings that do not satisfy all of the ordinary execution requirements.
But there still must be a writing.
Someone cannot ordinarily create an enforceable New Jersey will merely by telling another person what should happen to property after death.
That distinction mattered in Wasowicz. The court rejected the claimant’s argument that the alleged oral agreement was somehow “akin to a will.”
For an example outside New Jersey, click here to learn about the Estate of Marlon Brando.
Can Spouses Agree Not to Change Their Wills?
Yes, if the agreement is properly established.
This issue often arises in second marriages.
For example, each spouse may have children from an earlier relationship.
The couple might agree that:
- the survivor can use the property during life; and
- after the second spouse dies, the remaining property will be divided among both spouses’ children.
Simply signing similar or reciprocal wills does not automatically create a binding promise that neither spouse will later change the plan.
N.J.S.A. 3B:1-4 expressly provides that the execution of joint or mutual wills does not, by itself, create a presumption of a contract not to revoke them.
If the spouses intend to create a binding obligation, the agreement should be clearly documented.
This distinction is especially important in blended-family planning.
A will may be revocable.
A separate enforceable contract may not be.
Divorce and Separation Agreements Can Create Estate Obligations
Estate-related promises also commonly appear in divorce and separation agreements.
A settlement agreement might require someone to:
- maintain life insurance for a former spouse or children;
- leave a specified amount by will;
- keep a beneficiary designation in place;
- preserve an interest in a retirement account; or
- provide for children from the marriage.
Those obligations should not be ignored simply because the person’s later will says something different.
The question becomes whether the estate plan complies with the contractual obligation.
This is one reason estate planning documents should be reviewed together with prenuptial agreements, marital settlement agreements, divorce judgments, business agreements, and other contracts that may affect what someone is free to do at death.
What Happens if the Will Violates the Contract?
Suppose someone signs a valid written agreement promising to leave $250,000 to a particular person.
Years later, the person signs a new will that leaves that beneficiary nothing.
The later will is not necessarily invalid merely because it breaches the agreement.
Instead, the disappointed beneficiary may have a contractual claim against the estate.
The available remedy depends on the agreement and the circumstances.
A court may be asked to award damages, enforce the promised transfer, or impose another appropriate remedy.
That is different from a traditional will contest based on lack of capacity, undue influence, fraud, or improper execution.
The issue is not necessarily:
“Is the will valid?”
It may instead be:
“Did the decedent breach a binding contract?”
A Written Promise Still Needs Clear Terms
Having something in writing does not automatically end the analysis.
The writing still needs to provide sufficient evidence of an actual agreement.
Consider the difference between these statements:
“I’d like you to have my house someday.”
and
“In consideration for your agreement to provide care for me, I agree that my will shall leave my residence at 123 Main Street to you.”
The first may simply express an intention.
The second looks much more like a contractual commitment.
The surrounding circumstances can also matter.
Who made the promise?
What was promised?
Was anything given in return?
Was the agreement intended to be binding?
Did the parties later modify it?
Did the decedent own the property at death?
Did some other contract or estate planning document affect the transfer?
Written evidence is essential, but the terms still matter.
Do Not Assume a Promise and a Will Say the Same Thing
Estate disputes often begin because someone’s conversations and legal documents tell different stories.
A parent says one child will receive the house.
A business owner tells an employee that the company will someday be theirs.
A partner promises that the surviving partner can remain in the home.
A spouse promises that children from a prior marriage will ultimately inherit.
Then the person dies.
The deed says one thing.
The beneficiary designation says another.
The will says something else.
And the alleged promise was never properly documented.
That is exactly the kind of uncertainty good estate planning should try to prevent.
The Estate Planning Lesson
If you intend to make a binding promise about what will happen to property after your death, do not rely on a conversation.
Put the agreement in writing.
Then coordinate that agreement with your will, trust, beneficiary designations, property ownership, and other estate planning documents.
If you are relying on a promise someone else made to you, do not assume that a handshake or family understanding is enough.
Ask whether the agreement has been properly documented.
And if someone has already died and you believe a written agreement concerning an inheritance was breached, the issue should be reviewed promptly. Contract claims, probate procedures, creditor deadlines, and other time limits can affect the available remedies.
A promise about an inheritance can be enforceable in New Jersey. But when the promise concerns property passing at death, the writing often makes the difference between an enforceable agreement and an unenforceable expectation.
If you feel you had a promise to make a will and that promise was not kept, you should consult with counsel immediately to protect your rights.
This article provides general information about New Jersey estate and contract law. It is not legal advice. The enforceability of a particular agreement depends on its wording, timing, surrounding facts, and other applicable law.
Updated: August 2026
