Best Interest of the Child in Tennessee Custody Cases

The Two-Step Standard for Non-Parent Custody

When a grandparent or relative seeks custody against a biological parent's wishes in Tennessee, the court does not simply weigh both homes and pick the better one. It follows a two-step constitutional analysis rooted in the Tennessee Supreme Court's ruling in Blair v. Badenhope (77 S.W.3d 137).

Step one: Substantial harm. Before the court can even consider the child's best interests, the non-parent must prove by clear and convincing evidence that placing or keeping the child with the biological parent poses a risk of substantial harm. This is a high bar. It means more than showing the relative's home is more stable, better funded, or in a nicer neighborhood. The non-parent must show actual danger — abuse, neglect, untreated addiction, incarceration without a care plan, abandonment, or conditions that put the child's physical or emotional welfare at genuine risk.

Step two: Best interests. Only after the substantial harm threshold is met does the court move to a best-interest-of-the-child analysis under T.C.A. § 36-6-106. At this stage, the judge weighs the statutory factors to determine whether the non-parent should receive custody.

Why Parental Rights Come First

Tennessee follows the constitutional presumption of superior parental rights, reaffirmed in Blair v. Badenhope and grounded in the U.S. Supreme Court's decision in Troxel v. Granville. A fit parent's right to custody of their child is a fundamental liberty interest. Courts presume that a parent will act in the child's best interest, and that presumption can only be overcome with strong evidence.

This means that emotional testimony about how much you love the child, or how long the child has lived with you, is not enough on its own to take custody from a parent. The court needs evidence of harm — documented, specific, and substantial.

What Counts as Substantial Harm

Tennessee courts have found substantial harm in situations involving:

• Active, untreated substance abuse that impairs the parent's ability to care for the child
• Criminal conduct or incarceration that leaves the child without a caregiver
• Documented abuse or neglect substantiated by DCS or law enforcement
• Severe mental health conditions that prevent the parent from providing basic care
• Abandonment — the parent has voluntarily left the child without contact or support for an extended period

What does not typically meet the standard: the parent's home is smaller, the parent works long hours, the parent has a new partner the family dislikes, or the parent's lifestyle differs from the relative's preferences.

The Best Interest Factors

Once substantial harm is established, the court evaluates the factors in T.C.A. § 36-6-106, which include:

• The emotional ties between the child and each party
• Each party's ability to provide for the child's basic needs
• The stability of each home environment
• The child's adjustment to their current home, school, and community
• The physical and mental health of all individuals involved
• The child's reasonable preference if the child is 12 or older; the court may hear a younger child's preference on request
• Each party's willingness to facilitate a relationship with the other party

No single factor is decisive. The judge weighs them together to determine the arrangement that best serves the child.

Evidence That Matters

If you are a relative seeking custody against a parent's wishes, your case depends on the evidence you bring. Police reports, DCS investigation records, medical records documenting the child's condition, school attendance records, drug test results, court records of criminal convictions or protective orders — these carry weight.

Testimony from witnesses who have direct knowledge of the parent's behavior and its impact on the child strengthens your case. Opinions from the Guardian ad Litem carry significant influence, as the GAL investigates independently and reports directly to the judge.

What This Means for Your Case

Understanding the two-step standard helps you prepare realistically. If the parent is fit and simply wants the child back, you face an uphill battle — that is by constitutional design. If the parent has genuine fitness problems documented by evidence, the court has a path to protect the child.

The Tennessee Guardianship and Custody Court Process Guide explains these legal standards in plain language and includes a hearing preparation worksheet for organizing your evidence before the court date.

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