Grounds to Contest a Will in Colorado: A Guide for Jefferson County Families

February 24, 2026 Posted In Wills

Learning that a loved one’s will contains unexpected changes raises difficult questions. Families in Lakewood and throughout Jefferson County sometimes wonder whether they have grounds to contest a will in Colorado, or whether their concerns reflect grief rather than legal issues. 

The distinction matters because Colorado courts recognize specific legal reasons for challenging a will, not simply disagreement with its contents.

When the court is asked to invalidate part or all of a will based on problems with how it was created or signed, it is called a “will contest.” These cases require evidence that something went wrong during the estate planning process. Feeling hurt or surprised by a will’s terms, while understandable, does not by itself create a legal basis for challenge.

Key Takeaways for Contesting a Will in Colorado

• Colorado law recognizes three primary grounds for will contests: lack of testamentary capacity, undue influence, and improper execution.
• A contest of an informally probated will generally must be filed within the later of 12 months after informal probate or 3 years after death under C.R.S. § 15-12-108.
• Undue influence claims require evidence that someone pressured the person who made the will, not just that they had opportunity or motive.

What Does It Mean to Contest a Will in Colorado?

When families contest a will in Colorado, they ask a probate court to determine that the document does not represent the deceased person’s true wishes. This process differs from simply disputing how assets are distributed or disagreeing with the executor’s decisions.

The Difference Between Disagreement and Legal Grounds

Many people feel disappointed or confused when they read a loved one’s will. Perhaps a sibling received more, a charity appeared unexpectedly, or a long-standing promise went unfulfilled. These reactions are normal, but they do not automatically translate into legal claims.

Colorado courts require specific evidence that the will itself is defective. The question is not whether the will seems fair, but whether it meets legal requirements and reflects the person’s genuine intent.

Lack of Testamentary Capacity

Testamentary capacity refers to the mental ability required to create a valid will. Colorado law sets a relatively low threshold, but some individuals lack the necessary understanding when they sign estate planning documents.

A person making a will must generally understand three things: what property they own, who their natural beneficiaries are, and what signing the will means. When dementia, Alzheimer’s disease, or other cognitive conditions interfere with this understanding, the resulting will may be invalid.

The following types of evidence may support capacity challenges:

• Medical records from the time period when the will was signed
• Testimony from doctors, caregivers, or family members about cognitive decline
• Documented diagnoses of dementia or other conditions that affect judgment
• Evidence of confusion, memory loss, or disorientation around the signing date

Courts evaluate capacity at the specific moment the will was signed, not before or after. Someone with early-stage dementia might have valid lucid intervals, while someone who seemed fine might have experienced temporary confusion.

Undue Influence in Colorado Will Contests

Undue influence occurs when someone uses their position or relationship to pressure the person making a will. This pressure must overcome the person’s free will and substitute the influencer’s wishes for the testator’s genuine intent.

Recognizing Signs of Undue Influence

Undue influence rarely involves obvious threats or force. Instead, it typically develops gradually through isolation, dependency, and manipulation. A new caregiver who limits family contact, a romantic partner who accompanies the person to every attorney meeting, or a child who moves in and takes control of finances may all create conditions for undue influence.

Jefferson County families sometimes notice warning signs only after a death reveals unexpected changes to a will. Common patterns include sudden disinheritance of long-standing beneficiaries, large gifts to recent acquaintances, and estate plans that contradict years of stated intentions.

What Courts Look For

Colorado courts consider several factors when evaluating undue influence claims:

• The influencer’s opportunity to exert pressure through access and proximity
• The person’s susceptibility due to age, illness, isolation, or dependency
• Actions by the influencer to procure the will, such as selecting the attorney or arranging the signing
• Unnatural dispositions that favor the influencer over expected beneficiaries

These factors work together. Opportunity alone does not establish undue influence, but opportunity combined with susceptibility and an unnatural result creates a stronger case.

Improper Execution Under Colorado Law

Colorado law requires specific formalities for a valid will. When these procedures are not followed correctly, the document may fail regardless of the person’s intentions.

In Colorado, a will generally counts as valid if the person signing it either (1) signs and has two witnesses sign within a reasonable time after watching the signing or the person’s acknowledgment, or (2) acknowledges the will before a notary or another official who is authorized to take acknowledgments. The witnesses must sign within a reasonable time after they witness the signing or the person’s acknowledgment. Errors in this process, such as missing signatures or witnesses who did not actually observe the signing, may invalidate the document.

In Colorado, a holographic will may be valid even without witnesses if the signature and the material parts of the document are in the person’s handwriting. Typed portions or someone else’s handwriting on material provisions may cause problems.

Fraud and Forgery

Some will contests involve allegations that the document itself is fraudulent. These cases claim either that someone deceived the person making the will or that the signature is not genuine.

Fraud occurs when someone lies to the testator about important facts. For example, telling a parent that a child has died or abandoned them might induce changes to an estate plan. The deception must directly cause the contested provisions.

Forgery claims assert that the signature on the will does not belong to the person it purports to represent. These cases often require handwriting analysis and expert testimony.

FAQ for Contesting a Will in Colorado

Does having power of attorney give someone authority over a will?

Power of attorney and wills serve different purposes. A power of attorney authorizes someone to act during a person’s lifetime, while a will takes effect only after death. Having power of attorney does not give someone the right to change or control estate planning documents.

Who has legal standing to contest a will in Colorado?

Standing to contest a will generally requires an interest in the estate. Beneficiaries named in the current or a prior will and intestate heirs who would inherit without a will typically have standing. Colorado uses the term “interested person,” which may include heirs, beneficiaries, and sometimes creditors, depending on whether the outcome affects their legal or financial interest.

What happens to assets during a will contest?

Estate administration often continues during contested proceedings, though distributions to disputed beneficiaries may be delayed. The executor must still manage assets, pay legitimate debts, and preserve estate property while litigation proceeds.

When Concerns Deserve a Closer Look

Questioning a loved one’s will feels uncomfortable, especially while you’re grieving. Many families hesitate to raise concerns because they worry about appearing greedy or causing conflict. Yet some situations genuinely call for legal review.

Colorado Estate Matters, Ltd. offers free consultations for Jefferson County families who have questions about a will’s validity. Our team evaluates the specific facts of your situation and provides honest feedback about whether legal grounds may exist. Schedule your free consultation todayto discuss your concerns in a confidential, judgment-free setting.