Cal. Codes » Family Code / DIVISION 8. CUSTODY OF CHILDREN / PART 3. UNIFORM CHILD CUSTODY JURISDICTION AND ENFORCEMENT ACT / CHAPTER 1. General Provisions
California Codes

Cal. Family Code § 3405 (2026)

✓ current as of May 2026
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(a)A court of this state shall treat a foreign country as if it were a state of the United States for the purpose of applying this chapter and Chapter 2 (commencing with Section 3421).

(b)Except as otherwise provided in subdivision (c), a child custody determination made in a foreign country under factual circumstances in substantial conformity with the jurisdictional standards of this part must be recognized and enforced under Chapter 3 (commencing with Section 3441).

(c)A court of this state need not apply this part if the child custody law of a foreign country violates fundamental principles of human rights.

Notes of Decisions
Cited in 9 cases (4 in the last 5 years), 2006–2025 · leading case: Paillier v. Pence, 144 Cal. App. 4th 461 (Cal. Ct. App. 2006).
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Paillier v. Pence, 144 Cal. App. 4th 461 (Cal. Ct. App. 2006). · cites it 5× “” (Fam. Code, § 3405, subd. (a).) Moreover, “a child custody determination made in a foreign country under factual circumstances in substantial conformity with the jurisdictional standards of [the Act] must be .”
Guadalupe S. v. Los Angeles Cnty. Dep't of Child. & Fam. Servs., 213 Cal. App. 4th 476 (Cal. Ct. App. 2013). · cites it 2× “(Fam. Code, § 3405, subd. (a); In re A. C.”
In Re the Marriage of Margain & Ruiz-Bours, 372 P.3d 313 (Ariz. Ct. App. 2016). “…9 . California also treats foreign countries as if they are a state of the United States in applying the UCCJEA. Cal. Fam. Code § 3405 (a).”
R.B. v. D.R., 238 Cal. Rptr. 3d 904 (Cal. Ct. App. 5th 2018). “( Fam. Code, § 3405, subd. (a).) IV CONCURRENT JURISDICTION A.”
People v. Coulthard (Cal. Ct. App. 2023). “(Fam. Code, § 3405.) Additionally, Family Code section 3445 sets forth a procedure for registering an out-of- state custody order.”
In Re K.Q. ca4/3 (Cal. Ct. App. 2025). “(Fam. Code, § 3405 , subd. (a).)3 Pursuant to section 3421, subdivision (a), California may only exercise jurisdiction over a child in one of four situations: (1) California is the child’s home state (home state jurisdiction) (id.”
In Re K.Q. ca4/3 (Cal. Ct. App. 2025). “(Fam. Code, § 3405 , subd. (a).)3 Pursuant to section 3421, subdivision (a), California may only exercise jurisdiction over a child in one of four situations: (1) California is the child’s home state (home state jurisdiction) (id.”
Thai v. Cao CA6 (Cal. Ct. App. 2025). “490 ; Fam. Code, § 3405, subd. (a).) “The UCCJEA takes a strict ‘first in time’ approach to jurisdiction.”
San Diego Health & Human Servs. Agency v. Amber G., 2007 Cal. Daily Op. Serv. 4299 (Cal. Ct. App. 2007). “(Fam. Code, § 3405, subd. (a).) California courts have subject matter jurisdiction under the Act when California is the “home state” of the children (Fam.”
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