Frequently Asked Questions: Can Unmarried Couples Do Second Parent Adoption? (2026 Guide)

The short answer: in some states, yes. A "second-parent" adoption lets an unmarried partner adopt their partner's child while the partner keeps every parental right, and it works much like a stepparent adoption. Whether it's available depends entirely on your state, so check your state guide first. Where it is available, the other biological parent usually doesn't have to sign anything: in most of these cases the father never signs a consent, and the judge approves the adoption anyway.

Can unmarried couples do a second-parent adoption, or do you have to be married?

It depends on where you live. Some states allow an unmarried partner to adopt without ending the legal parent's rights. Others only protect the parent's rights when the person adopting is the parent's spouse.

Wisconsin is a clear example of the second group. Its adoption law lets a married couple adopt jointly, or one spouse adopt when the other spouse is the child's parent (Wis. Stat. § 48.82(1)). After an adoption, a birth parent's rights continue only if that parent is the spouse of the adoptive parent (Wis. Stat. § 48.92(2)). So in Wisconsin, an unmarried partner can't adopt while the child's parent keeps their rights. California's stepparent adoption route likewise requires marriage or a registered domestic partnership.

That's why we don't publish a "list of states" here: the rules change, and some states have different rules for different situations. Your state guide explains what's available where you live.

How does a second-parent adoption work?

Where it's allowed, it follows the same basic path as a stepparent adoption:

1. Confirm your state allows it for an unmarried partner.
2. Prepare and file the petition in the court that handles adoptions in your county, with your partner's written consent and the child's birth certificate.
3. Give notice to, or file the consent of, the other biological parent, if there is one with legal rights.
4. Complete any background check or home study your state requires.
5. Attend a short final hearing, where the judge signs the decree.

The parent you live with doesn't give up anything. They stay the child's parent, and the adopting partner becomes the second legal parent.

Is the other biological parent's consent required?

Usually not, in practice. The same rules that apply in stepparent adoptions apply here. In our experience, about 80% of the stepparent adoptions we've completed went forward without the other biological parent's consent. That's what courts see every day: the father never signs a consent, and the judge approves the adoption anyway.

The usual reasons are that he stopped visiting and supporting the child for the period your state sets, he can't be found, or he has passed away. Each state sets its own period. Pennsylvania looks at conduct continuing for at least six months immediately before the petition (23 Pa.C.S. § 2511(a)(1)). New York uses six months of failing to visit and communicate with the child when able to (N.Y. Dom. Rel. Law § 111(2)(a)).

If the other parent agrees, they simply sign a consent, and the case usually moves quickly.

What if we don't know where the other biological parent is?

You can still go forward. Courts have a routine process for this. You make a reasonable search (last known addresses, relatives, social media, public records), keep notes of what you tried, and then the court allows notice by publication in a newspaper where the parent was last known to live.

Your state's rules set how long the notice runs and how long the parent has to respond. If they don't respond, the adoption moves ahead. Publication is a normal step, not an obstacle.

How much does a second-parent adoption cost?

StepParent Adoption 360 prepares your complete, state-specific document package for $349 for the first child, plus $99 for each additional child. Court filing fees, any background check or home study, service or publication costs, and certified copies are paid separately and vary by county. Our cost guide explains what courts typically charge.

How long does it take?

Many uncontested adoptions finish within a few months. Your county court's calendar, any background check or home study, and any publication period set the pace. The fastest cases are ones where the paperwork is complete and correct the first time and the other parent either consents or has been gone a long time.

Does the child have to agree?

An older child usually does, just as in a stepparent adoption. The age depends on the state, generally somewhere from 10 to 14 (Child Welfare Information Gateway). Florida and Texas require the consent of a child 12 or older (Fla. Stat. § 63.062(1)(c); Tex. Fam. Code § 162.010(c)); New York requires the consent of a child over 14 (N.Y. Dom. Rel. Law § 111(1)(a)). Courts in some states can excuse the child's consent when that's in the child's best interest.

In our experience, a child who has grown up with the adopting partner is usually glad to say yes, and the hearing is a happy one.

What rights does the second parent gain?

Once the judge signs the decree, the adopting partner is a full legal parent, with the same rights and responsibilities as any parent. Practically, that means:

If a biological parent's rights end through the adoption, so does that parent's duty to pay child support going forward (Child Welfare Information Gateway). Whether any back support can still be collected depends on state law.

A legal parent relationship is also why second-parent adoption matters so much for unmarried couples: it protects the child no matter what happens to the adults' relationship.

Can a same-sex unmarried couple do a second-parent adoption?

Yes, wherever second-parent adoption is available to unmarried partners. The rules are the same for every couple. And once a court grants the adoption, other states must respect it: in V.L. v. E.L. (2016), the U.S. Supreme Court held that Alabama had to give full faith and credit to a Georgia second-parent adoption granted to a same-sex couple.

Married same-sex couples use the ordinary stepparent adoption process, like any married couple.

Frequently Asked Questions

Can an unmarried partner adopt their partner's child?

In some states, yes, through a second-parent adoption in which the partner's parental rights stay in place. Other states, such as Wisconsin, only keep the parent's rights when the adopting person is the parent's spouse. Check your state guide.

Do we have to get the father's consent?

Usually not. When he hasn't kept up contact or support for your state's required period, can't be found, or has died, the father never signs a consent and the judge approves the adoption anyway. About 80% of the stepparent adoptions we've completed went forward without the other parent's consent.

What if our state doesn't allow second-parent adoption?

Marriage turns the case into a standard stepparent adoption. In a state like Wisconsin, where only a spouse's adoption keeps the parent's rights in place, an adoption by an unmarried partner isn't the route, so check your state's rule before filing.

How much does a second-parent adoption cost?

Our document package is $349 for the first child plus $99 for each additional child. Court fees, any background check or home study, publication and certified copies are separate and vary by county.

Is an adoption granted in one state recognized in another?

Yes. The U.S. Supreme Court held in V.L. v. E.L. (2016) that a state must give full faith and credit to another state's adoption judgment when the issuing court had jurisdiction.

About the Author

Doug Brown, Founder. Doug Brown has helped families prepare stepparent and adult adoption paperwork since 2001: more than 34,000 families in all 50 states. StepParent Adoption 360 is a document-preparation service, not a law firm, and doesn't give legal advice.

Sources: Child Welfare Information Gateway, "Stepparent Adoption" factsheet; Wis. Stat. §§ 48.82(1) and 48.92(2); 23 Pa.C.S. § 2511(a)(1); N.Y. Dom. Rel. Law § 111(1)(a) and § 111(2)(a); Fla. Stat. § 63.062(1)(c); Tex. Fam. Code § 162.010(c); V.L. v. E.L. (U.S. Supreme Court, 2016). Company figures (34,000+ families since 2001; about 80% of completed adoptions without the other parent's consent) are from our own records.