For same-sex spouses and registered domestic partners in San Diego, California divorce law applies the same way it does to any couple: no-fault grounds, equal division of community property, and custody decided by the child's best interests. What differs is the history: a domestic partnership before the wedding, parentage for a non-biological parent, or a marriage formed elsewhere.
Most people facing the end of a same-sex marriage or partnership are not asking whether the law applies to them. They are asking which parts of their own history count. A couple may have registered as domestic partners years before they married. One parent may have carried the child while the other has no genetic tie. The marriage may have taken place in another state, or before Proposition 8 passed. Those facts can change when the property clock starts, who is a legal parent, and which procedure fits. This guide follows that chain: the type of relationship, the parentage status of any children, the legal issue those create, and the procedure that resolves it.
How California Law Treats Same-Sex Marriage and Domestic Partnership
California recognizes two separate legal relationships for same-sex couples: marriage and registered domestic partnership. Many couples have both, formed years apart, and each one has its own start date and its own route to ending it.
Key California rules at a glance| Rule | What it provides | What else it says |
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| Family Code § 297.5 | Registered domestic partners shall have the same rights, protections, and benefits, and shall be subject to the same responsibilities, obligations, and duties under law | As are granted to and imposed upon spouses. |
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| Family Code § 299(e) | Parties to a registered domestic partnership who are also married to one another may petition the court to dissolve both their domestic partnership and their marriage in a single proceeding | In a form that shall be prescribed by the Judicial Council. |
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| Family Code § 3020(d) | It is the public policy of this state to ensure that the sex, gender identity, gender expression, or sexual orientation of a parent, legal guardian, or relative is not considered in determining the best interests of the child. | The health, safety, and welfare of children shall be the court's primary concern in determining the best interests of children. |
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Dissolving a Same-Sex Marriage in California
Residency comes first. Under Family Code section 2320, a judgment of dissolution generally requires that one spouse has lived in California for six months, and in the county of filing for three months, right before the petition is filed. For a San Diego County filing, that means three months in the county.
The same section has an exception written for same-sex marriages. A California court can enter a judgment of dissolution, nullity or legal separation even if neither spouse lives in California, if the couple married in California and neither spouse lives somewhere that will dissolve the marriage. If that place does not recognize the marriage, the law presumes it will not dissolve it, though that presumption can be overcome. The proper court is the superior court in the county where the couple married, and California law governs the case.
Grounds are no-fault. Family Code section 2310 allows dissolution or legal separation based on "irreconcilable differences, which have caused the irremediable breakdown of the marriage," or on permanent legal incapacity to make decisions. Neither spouse has to prove the other did anything wrong.
Dissolving a California Registered Domestic Partnership
Partners who later married each other have two relationships, not one. Family Code section 299(e) provides that "parties to a registered domestic partnership who are also married to one another may petition the court to dissolve both their domestic partnership and their marriage in a single proceeding." Marrying did not erase the partnership. A couple who addresses only the marriage may leave the partnership legally in place.
Community Property, Long-Term Partnerships, and the Date-of-Separation Question
The community property period has two ends: a start date and a date of separation. For a married couple with no earlier relationship, the start is the wedding. For registered domestic partners, section 297.5 gives partners the same property rights and duties as spouses, so the partnership can carry its own community property period.
The other end of the period is the date of separation. Family Code section 70 defines it as "the date that a complete and final break in the marital relationship has occurred, as evidenced by both of the following: (1) The spouse has expressed to the other spouse the intent to end the marriage. (2) The conduct of the spouse is consistent with the intent to end the marriage." The court considers all relevant evidence. Saying it is over is not enough on its own, and neither is moving out on its own. Both pieces generally need to line up.
Parentage in Same-Sex Families Under California Law
Parentage means being a child's legal parent, with the rights and duties that come with it. California's rules sit in the Uniform Parentage Act, which begins at Family Code section 7600, and the law offers several routes to it.
Presumptions. Under Family Code section 7611, a person is presumed to be a child's parent if, among other conditions, the person and the child's birth mother are or have been married and the child is born during the marriage, or within 300 days after it ends. Section 297.5(d) makes the rights and obligations of registered domestic partners toward a child of either of them the same as those of spouses.
Assisted-reproduction consent. Family Code section 7613 provides that when a woman conceives through assisted reproduction with donated sperm or eggs, with the consent of another intended parent, "that intended parent is treated in law as if that intended parent is the natural parent of a child thereby conceived." The consent is to be in writing and signed by both, but a missing writing does not end the question. A court may still find consent by clear and convincing evidence of an oral agreement, made before conception, that both would be parents. The same section generally treats a sperm donor who provides semen to a licensed physician or licensed sperm bank as not a parent, unless the donor and the woman signed a written agreement before conception saying otherwise.
Custody and Support When Same-Sex Parents Separate
Family Code section 3020 sets the priority: "the health, safety, and welfare of children shall be the court's primary concern in determining the best interests of children" in any custody or visitation order. The same section states a policy of frequent and continuing contact with both parents after they separate, unless that contact would not be in the child's best interests.
Section 3020(d) speaks directly to LGBTQ parents. It is California's public policy "to ensure that the sex, gender identity, gender expression, or sexual orientation of a parent, legal guardian, or relative is not considered in determining the best interests of the child." Under Family Code section 3040, custody goes, in order of preference and according to the child's best interest, to both parents jointly or to either parent. When choosing between parents, the court considers, among other factors, which one is more likely to allow the child frequent and continuing contact with the other.
Child support follows the statewide uniform guideline in Family Code section 4055. The formula uses each parent's net monthly disposable income and the approximate percentage of time the higher earner has primary physical responsibility for the children. A support order runs against a legal parent, so establishing parentage comes before support, just as it does before custody.
