My ex won't tell me where the biological father lives — can I still adopt?

How it usually works

The court wants the other legal parent to receive notice of the adoption. Notice gives him a chance to respond. It is not the same as getting his permission. When he can't be found, the court lets you give notice in a different way.

The usual sequence:

• Gather what you know. Full name, birth date, old addresses, past employers, family members, phone numbers, social media names, and the town where he last lived.
• Search and keep notes. Try his last known address, search public records and social media, and contact relatives or mutual friends. Write down who you contacted, when, and what they said.
• Record your ex's refusal. A short, dated note that you asked and were told no is useful. It shows the court you tried the obvious source first.
• Sign a statement describing your search. Most courts want a sworn account of what you did to find him.
• Ask the court to approve alternate notice. This is typically publication in a newspaper in the area where he last lived. Some courts also accept posting or mailing to his last known address.
• Let the response period run. If he doesn't respond, the court can move ahead without him.
• Attend the final hearing. The judge reviews the file, talks with you and your child, and signs the decree.

A father who has been out of the picture and can't be found is something courts see every day. Judges aren't surprised by it, and they have a routine way of handling it.

What counts as a real search

The court isn't asking for a detective-level effort. It wants to see that you tried the sensible places and wrote down what happened.

Strong search steps include:

• Contacting him at his last known address, phone number, or email
• Asking his relatives, old friends, and your ex
• Searching social media and online people-search sites
• Checking public records such as court dockets, property records, and voter information where available
• Checking whether a military locator or inmate lookup returns anything, if that fits what you know
• Looking at old paperwork, such as prior court orders, that may list an address

You don't need to hire a private investigator. A careful, honest effort that you can describe on paper is what counts.

If a child support agency has ever handled a case for your child, that file may hold an address. Your county clerk can tell you how to ask the court to request it, if the court wants that step.

What changes from state to state

The overall approach is the same everywhere, but the details are local. These are the things that vary:

• Which court hears the case. The name differs, and in some states it's a family or probate division.
• How much searching the court expects. Some courts want a detailed sworn statement, others use a short form.
• What alternate notice looks like. Publication is common, but some places also use posting, mail to a last known address, or both.
• How long the response period runs. Each state sets its own, and it starts after notice is complete.
• Who must receive notice. An unmarried father who never established paternity is treated differently in different states. Some states have a putative father registry, and some require notice only to a legally recognized father.
• What counts as grounds when a parent has left the picture. States use different periods of no contact or no support, and different wording for it.
• Home study and background checks. Whether they're required, and who does them, depends on the state and sometimes the county.
• Newspaper and filing costs. The court's filing fee and the newspaper's publication charge are set locally. Your county clerk can confirm both.

The state-by-state version of this answer is available for your state, and it covers these details specifically.

What the court looks at

Courts want a child to have the security of two active legal parents. When one parent has stopped showing up, a stepparent who has been in the child's daily life is often the person who fills that role. The judge's questions are practical:

• Was the biological father given proper notice, or did you make a genuine effort to find him?
• Has he stayed in contact or supported the child?
• Does your spouse, the parent you share a home with, agree to the adoption?
• Is the child doing well in your home?
• If the child is old enough, does the child want this?

Your spouse's consent is usually the easy piece. The parent who is part of your household typically signs without trouble. The father's signature is the one many people worry about, and that is exactly what the notice process is designed to handle.

If the father turns out to be deceased, the process is simpler. You give the court a death certificate and the notice question goes away.

What happens to child support

Once the adoption is final, the duty to pay support going forward ends, because the child is legally yours. Whether support that was already past due can still be collected depends on your state's law. If there's a balance owed, ask us and we'll point you to what your state's version looks like.

Questions families ask next

What if I don't know his full name or have nothing on him?

Tell us what you do have, including the name on the birth certificate if you can find it. The court will want to see that you tried, and the search steps are adjusted to the information available.

What if he sees the notice and responds?

Many fathers who respond sign a consent or simply don't contest, and the case continues. If he actively shows up to fight the adoption in court, some families choose to add an attorney for that hearing.

Does my ex have to cooperate?

No. Your ex can decline to share his address and the case still moves forward. Your documented request is part of your search record.

Do I have to publish in a newspaper?

Publication is the most common form of alternate notice, but the court decides what's acceptable locally. Your documents are prepared for your county's practice.

Can I start before I find him?

Yes. You can answer the questions now, and your search notes become part of the package.

How we help

StepParent Adoption 360 is a document preparation service, not a law firm. You answer questions online, and we prepare the complete court document package for your county, including the paperwork for a diligent search and alternate notice. You file it yourself without an attorney, and we support you until the decree. The price is $349 for the first child (or one adult adoptee) and $99 for each additional child. Court-ready documents arrive within 24-48 hours after you finish the questions, with a 100% court acceptance guarantee. We've helped 34,000+ families since 2001. Call us at (855) 924-0450 with questions about your situation.