To get full custody of a child as a mother in Washington state, you must show that it is in the child’s best interests and that the other parent should have limited or no decision-making authority or parenting time.

These cases are never simple. Whether you are worried about your child’s safety, navigating a high-conflict situation, or unsure about what to do next, it is important to get clear guidance from an experienced attorney. 

The Seattle child custody lawyers at our firm understand how much is at stake. We will explain how to get full custody of a child as a mother, what Washington law requires, and how to prepare for every step of the process.

What Does Full Custody Mean in Washington State?

In Washington, the term “custody” is not commonly used in court documents. Instead, the court uses parenting plans and awards “decision-making authority” and residential time.

That said, many parents still use the phrase “full custody” to describe one of the following:

  • The child lives with one parent all the time.
  • One parent makes all major decisions about education, non-emergency and emergency medical care, health, religion, and activities.
  • The other parent has limited or supervised visitation, if any.

Full custody may be ordered when there are concerns about abuse, neglect, addiction, or instability. A judge will only approve this kind of arrangement if it meets the child’s best interests, which is the main legal standard under RCW § 26.09.002.

What Do Washington Courts Consider in Custody Decisions?

To determine parenting time and decision-making rights, Washington courts look at many factors, including:

  • The strength of the relationship between each parent and child
  • Each parent’s ability to meet the child’s needs
  • The emotional, developmental, and educational needs of the child
  • History of abuse or neglect, if any
  • Each parent’s mental and physical health
  • The child’s adjustment to home, school, and community
  • The child’s wishes, if mature enough to express them (usually age 12 and older)

All of these fall under Washington’s “best interests of the child” standard. If you are a mother trying to get full custody, you will need to present clear evidence that these factors weigh in your favor and that the other parent’s involvement should be restricted or limited.

Can a Mother Automatically Get Full Custody?

No. Washington law does not favor mothers over fathers. Both parents start with equal rights. To receive full custody, a mother must show the court that this is best for the child. Simply being the primary parent in the past is not enough. You may need to:

  • Document concerns about the other parent’s behavior.
  • Show your consistent role in the child’s life.
  • Explain why shared custody would not be safe or healthy.

If domestic violence or substance abuse is involved, the court may limit the other parent’s rights under RCW § 26.09.191.

What Is the Process for Getting Full Custody in Washington?

The process for getting full custody as a mother generally involves:

Filing a Parenting Plan

You will submit a proposed parenting plan with your divorce or custody case. This plan outlines where the child will live and who will make decisions.

Requesting Restrictions or Sole Decision-Making

To ask for full custody, you must check the boxes that request:

  • Sole decision-making authority
  • Primary residential time for the child
  • Limited or supervised visitation for the other parent (if needed)

You must include reasons that support your request, such as abuse, substance use, or lack of involvement.

Providing Evidence

You will need to show why the other parent should not share custody. Useful evidence may include:

  • Police reports or protective orders
  • Medical or therapy records
  • School records
  • Text messages, emails, or voicemails
  • Witness statements

Attending Court Hearings

There may be temporary orders, evaluations, or mediation before a final hearing. A judge will make a decision based on the evidence and law.

When Will a Judge Award Full Custody to a Mother?

A judge will grant full custody to a mother when:

  • The other parent poses a risk to the child’s safety.
  • There is a history of domestic violence or abuse.
  • The other parent has serious mental health or substance abuse issues.
  • The other parent is absent or uninvolved.
  • Shared decision-making is not realistic or safe.

Even in these cases, the court may still allow limited or supervised visits unless they would harm the child.

What if the Other Parent Accuses You of Abuse?

If you believe the other parent will falsely accuse you of abuse, our attorney will help you:

  • Prepare your evidence and timeline.
  • Collect character references or professional support (such as counselors or teachers).
  • Respond strategically in court filings.

You should not handle these situations alone. Washington courts take all claims seriously. Having the right legal support can protect you and your child.

Can I Get Full Custody Without a Lawyer?

You can file for full custody on your own, but it is not recommended. These cases involve complex legal standards, detailed evidence, and emotional pressure. If you make a mistake or miss a deadline, it can hurt your case.

Our experienced family law attorneys in Seattle will:

  • Build a strong case for you from the start.
  • File your documents correctly.
  • Represent you at hearings or mediation.
  • Protect your rights during stressful or high-conflict situations.
  • Keep the focus on what is best for your child.

What if Domestic Violence Is Involved?

If you are a survivor of abuse—or if you fear that your child is not safe with the other parent—the law gives you protection. Under RCW § 26.50, you may be able to file a protection order to:

  • Prevent contact
  • Require supervised visitation
  • Block the other parent from decision-making

If you worry the other parent might hurt themselves or the child, tell your attorney immediately. These cases need urgent, careful handling.

Seeking Full Custody as a Mother in Washington State? Call Us

If you are trying to get full custody in Washington, you are likely facing one of the hardest moments in your life. Whether you are a professional trying to protect your children and assets or a stay-at-home mother unsure of your future, you deserve strong legal guidance.

Dellino Family Law uses over 180 years of combined experience and a personalized approach to resolve our clients’ cases. We will match you with the right attorney for your situation, whether it involves negotiation, urgent court orders, or high-conflict litigation.

Contact us today to schedule an in-depth, pre-consultation case evaluation to learn what it will take to protect your child and your future.