REVOLUTIONIZING FAMILY LAW REACH OUT NOW
Gavel, sound block and little wooden figures of parents and children

Custody Modifications: When and How to Make Changes

Law Office of Shelly Jean John March 27, 2025

As a California family law attorney, one of the most frequently asked questions I receive involves custody modifications. Parents are often concerned about what it takes to make changes to a custody order, when it’s appropriate to request such a change, and what the court looks at in deciding whether a modification is warranted. 

Whether you’re facing challenges with your current custody arrangement or seeking to make a change for the well-being of your child, it’s important to understand the process, legal considerations, and how to approach it effectively. Family Law Revolution is here to provide the personalized guidance and advice you need.

In this article, I will walk you through the circumstances that may warrant a custody modification, the steps involved in filing a request, and how California law addresses these matters. As an Ontario, CA custody lawyer, my goal is to give you a comprehensive understanding of the modification process.

Custody Orders and Modifications

When a family law court issues a custody order, it’s based on what is considered to be in the best interests of the child at that particular time. Custody orders can be either temporary or permanent, but circumstances can change over time. 

As life evolves, the needs of children, the availability of parents, and other relevant factors may shift. This is where custody modifications come into play.

A custody modification allows one or both parents to request changes to an existing custody or visitation arrangement. However, the court will not change the order just because one parent or the other simply wants it. There must be a valid legal reason for the modification, and the change must still be in the best interests of the child.

The Legal Standard for Custody Modifications in California

Under California family law, the court will only modify a custody order if there has been a substantial change in circumstances since the original order was made. 

This means that something significant must have occurred that warrants a review of the original arrangement. Simply disagreeing with the existing custody arrangement or finding it inconvenient isn’t enough to justify a modification.

Some of the most common circumstances that may lead to a modification request include:

  • A change in the child’s needs or preferences as they grow older.

  • A parent’s relocation, making the current arrangement no longer practical.

  • One parent being unfit or unable to care for the child due to issues like substance abuse, mental health problems, or neglect.

  • A parent’s failure to follow the existing custody order, such as repeatedly missing scheduled visitation or being consistently late.

  • A change in the child’s primary caretaker or a parent’s ability to provide for the child’s emotional, physical, or financial needs.

In any case, the court will look at what is in the best interests of the child. This remains the overarching standard when determining custody and visitation arrangements. If a significant change in circumstances can be proven, the court may grant a modification.

How to Request a Custody Modification

If you believe that a modification to your child support or custody arrangement is necessary, the first step is to file a request with the court. Here’s how the process generally works in California:

Determine Whether You Have Grounds for a Modification

Before filing for a modification, it’s important to confirm that you have a valid legal reason to request a change. Remember, the court will not modify a custody order without a substantial change in circumstances. If the change isn’t significant enough, your petition may be denied. 

File a Request for Order (RFO)

To request a modification, you’ll need to file a Request for Order (RFO) with the court. This is a legal document that formally asks the court to modify the existing custody arrangement. 

Along with the RFO, you’ll need to submit a Declaration, which is a written statement that provides more detailed information about the circumstances that justify the modification. It’s critical to be thorough and specific in your declaration.

Serve the Other Parent

After filing your request, the other parent must be notified of the petition. This is done by serving them with a copy of the RFO and supporting documents. Proper service is essential in family law matters because it confirms that both parents have an opportunity to participate in the legal process.

Attend the Hearing

Once the request has been filed and the other parent has been served, the court will schedule a hearing. This is your opportunity to present your case in front of a judge and provide any evidence that supports your request for a modification. 

During the hearing, the judge will evaluate the evidence and arguments from both sides. If the judge determines that there has been a substantial change in circumstances and that a modification is in the child’s best interests, they’ll issue a new custody order.

What the Court Considers in Custody Modifications

In California family law, the court's primary concern is the child’s best interests. There are several factors that the court will consider when determining whether a custody modification is appropriate:

The Child’s Needs and Preferences

As children grow, their needs and preferences often change. A custody arrangement that worked when the child was younger may no longer be suitable as they mature. 

The Parent's Ability to Provide for the Child

The court will look at whether both parents are able to provide a stable, nurturing environment for the child. This includes considerations like each parent’s financial stability, mental and physical health, and overall ability to meet the child’s emotional and physical needs.

The Relationship Between the Child and Each Parent

The court will also consider the bond between the child and each parent. If one parent has been the primary caregiver and has a stronger emotional bond with the child, the court may be hesitant to disrupt that relationship unless there is a significant reason to do so. 

Any History of Abuse or Neglect

If there is a history of abuse or neglect by one parent, this will be taken into account. If the requesting parent can prove that the other parent poses a risk to the child’s safety or well-being, the court will likely grant a modification to protect the child.

The Parent's Willingness to Support the Child’s Relationship With the Other Parent

In California family law, the court values a child having a positive relationship with both parents whenever possible. If one parent is preventing or interfering with the other parent’s relationship with the child, this can be a factor that influences the court’s decision. 

How to Strengthen Your Case for Custody Modification

If you believe a custody modification is in the best interest of your child, there are several steps you can take to strengthen your case:

  • Document changes in circumstances: It’s crucial to keep a record of any significant changes that have occurred since the original custody order. This includes things like school records, medical reports, witness statements, or any other relevant documents that demonstrate a change in circumstances.

  • Maintain a positive relationship with your child: The court will look at how you have been fulfilling your parental responsibilities. Make sure you maintain a positive relationship with your child and remain actively involved in their life. This will not only benefit your child but will also help demonstrate that you’re committed to their well-being.

  • Work to resolve disputes amicably: If possible, try to resolve disputes with the other parent outside of court. Mediation or negotiation can sometimes result in a more favorable outcome and reduce the time and expense involved in court proceedings.

  • Seek professional help if necessary: If the modification involves issues such as substance abuse, mental health concerns, or domestic violence, seeking professional evaluations or therapy may help demonstrate that you’re taking the necessary steps to address these concerns and protect the child.

Take the First Steps

At Family Law Revolution, I’m committed to providing the guidance and support you need to make informed decisions about your child’s future. I’m proud to serve Ontario, California, and the surrounding areas of Riverside, San Bernardino County, and Riverside County. Reach out to me, Shelly Jean John at Family Law Revolution today.