How to File for Custody in New Mexico Without a Lawyer

Attorney retainers in New Mexico range from $2,500 to $7,000 for uncontested cases and can hit $30,000 or more when custody is contested. If you cannot afford those fees, you are legally allowed to represent yourself. But the court expects the same level of procedural compliance whether you have an attorney or not.

Step 1: Gather the Required Forms

You need three documents to start a custody case in New Mexico:

• Domestic Relations Information Sheet (Form 4A-101 NMRA): Basic case information — names, addresses, children's ages
• Petition for Dissolution of Marriage with Children (Form 4A-103 NMRA): The formal request asking the court to dissolve the marriage and enter custody orders
• Summons (Form 4-206 NMRA): The official notice that gets served on the other parent

All forms are available free on the New Mexico Courts website. The court will not accept handwritten forms — they must be typed or filled in electronically and printed.

Step 2: File with the District Court Clerk

Take the original forms to the District Court clerk's office in the county where either you or the other parent lives. The filing fee is $137 across all New Mexico judicial districts.

If you cannot afford the fee, file Form 4-222 (Application for Free Process and Affidavit of Indigency) along with Form 4-223 (proposed Order on Application for Free Process). Both forms must be notarized. If the judge approves, the filing fee and sheriff service costs are waived.

Once filed, the court assigns a case number and judge, and automatically issues a Temporary Domestic Order (TDO) under Rule 1-121 NMRA. The TDO takes effect immediately upon service and prohibits either parent from removing the children from New Mexico.

Step 3: Serve the Other Parent

You must formally serve the other parent with the filed Petition, Summons, Information Sheet, and TDO. Service can be done through:

• A private process server
• The County Sheriff's office
• Certified mail with restricted delivery and return receipt requested

The server must complete the Return of Service on the second page of the Summons, which then gets filed with the court clerk.

Step 4: Wait for the Response (30 Days)

The other parent has exactly 30 days from service to file a formal Answer using Form 4A-104 NMRA. If they do not respond within 30 days, you can initiate default proceedings — meaning the court may grant all of your requested custody and support terms.

Step 5: Complete Financial Disclosures

Within 45 days of service, both parents must exchange comprehensive financial information under Rule 1-123 NMRA. This includes the Domestic Relations Financial Information form, child support worksheets, recent pay stubs, tax returns, and documentation of childcare and healthcare costs.

Step 6: Draft Your Parenting Plan

Whether the case is contested or uncontested, you need a complete parenting plan on Form 4A-302 NMRA. This form covers decision-making authority, timesharing schedules, holiday rotations, and dispute resolution procedures.

For uncontested cases where both parents agree, you submit the completed plan along with a Marital Settlement Agreement, Child Support Obligation and Order, and Final Decree for the judge to sign.

For contested cases, the court refers you to mandatory mediation before scheduling a trial.

What Pro Se Filers Get Wrong

The most common rejection reasons are incomplete financial disclosures, missing the mandatory parenting education class (required within 45 days of filing in most districts), and submitting a parenting plan with vague timesharing language instead of specific days and times.

The New Mexico Child Custody & Parenting Plan Guide provides a chronological filing roadmap, line-by-line instructions for completing each form, and annotated parenting plan examples that match what judges expect.

See more New Mexico guides →