Holmes Law drafts prenuptial and postnuptial agreements for couples in California. In California the family law practice is limited to marital agreements — contested divorce, custody and support matters are referred to counsel who appear in those courts regularly. Full-service family law is handled in Idaho, where the firm also litigates. That scope is set out in full on the family law page.
California is a community property state, and it has the most demanding process rules of any of the six states this firm practices in. The substance of a California agreement is rarely what defeats it. The signing is.
Why a California Marital Agreement Is Worth Doing Properly
Under California law, property and earnings acquired during a marriage are presumptively community property, owned equally by both spouses, and a court dividing a community estate at dissolution starts from an equal division. Separate property — what each spouse owned before the marriage, and what either receives during the marriage by gift or inheritance — stays separate in theory. In practice the line moves. Separate property that is improved with community earnings, a separately owned business that a spouse works in during the marriage, a separate account that receives a single community deposit: each of these produces a tracing argument, and tracing arguments are expensive, slow and uncertain.
A well-drafted marital agreement replaces that argument with a written record. It is not a prediction that the marriage will fail. It is the same instinct that makes people write wills, buy insurance and sign operating agreements — deciding, while everyone is on good terms and thinking clearly, what happens if something goes wrong.
It matters most where one spouse brings a business, a professional practice, real property, a family interest, or significant debt into the marriage, where one spouse expects an inheritance, where either has children from a prior relationship, or where the couple owns property in more than one state. The last of those is the reason this firm is admitted in six.
California Prenuptial Agreements: the Premarital Agreement Act
California enacted the Uniform Premarital Agreement Act at Family Code sections 1600 through 1617. It applies to agreements executed on or after 1 January 1986. California has amended its version heavily since, and the California-specific provisions — sections 1612(c) and 1615(c) — are where most of the difficulty lives. Do not rely on national form-book language or on out-of-state advice here; it will not carry the California requirements.
Formation
Family Code section 1611 requires only that a premarital agreement be in writing and signed by both parties, and states that it is enforceable without consideration. Section 1613 makes it effective on marriage — if the wedding does not happen, neither does the agreement. Section 1614 requires any post-marriage amendment or revocation to be in a signed writing; nothing informal will do it.
What it can cover
Section 1612 permits the parties to address property rights wherever and whenever acquired, management and control, disposition on separation, dissolution or death, wills and trusts made to carry the agreement out, the death benefit of a life insurance policy, the law that governs construction of the agreement, and any other matter not contrary to public policy or a criminal statute. Section 1612(b) is the hard limit: a child’s right to support cannot be adversely affected by a premarital agreement.
Spousal support is its own problem
Section 1612(c) treats spousal support separately from everything else. A provision about spousal support, including a waiver, is unenforceable if the party against whom it is being enforced was not represented by independent counsel when the agreement was signed. And the statute closes the obvious workaround: an otherwise unenforceable spousal support provision does not become enforceable merely because that party had independent counsel. Independent counsel is necessary and is not sufficient — the provision also fails if it is unconscionable at the time enforcement is sought. A support waiver signed by an unrepresented spouse is, in practical terms, a waiver that will not hold.
The Enforcement Standard: Family Code Section 1615
Section 1615(a) makes a premarital agreement unenforceable if the party resisting it proves either that they did not execute it voluntarily, or that the agreement was unconscionable when it was made and, before signing, all three of the following were true: they were not given a fair, reasonable and full disclosure of the other party’s property and financial obligations; they did not voluntarily and expressly waive further disclosure in writing; and they did not have, and could not reasonably have had, adequate knowledge of the other’s property and obligations.
Note how that second route is built. Unconscionability alone is never enough. A signed written waiver of further disclosure, or actual knowledge of the other side’s finances, defeats it on its own. Section 1615(b) makes unconscionability a question of law for the judge rather than a question of fact, which is why a dated schedule of assets, debts and income, attached to the agreement and initialled by both parties, is worth the hour it takes to produce.
Section 1615(c): the agreement is presumed involuntary until a court says otherwise
This is the provision that catches people, and it works backwards from what most clients expect. A California premarital agreement is deemed not to have been executed voluntarily unless the court finds, in writing or on the record, all of the following:
- the party against whom enforcement is sought was represented by independent legal counsel when the agreement was signed, or, after being advised to seek independent counsel, expressly waived that representation in a separate writing — and the advisement to seek counsel was given at least seven calendar days before the final agreement was signed;
- the seven-day review period described below was observed;
- if that party was unrepresented, they were fully informed in writing of the terms and basic effect of the agreement and of the rights they were giving up, in a language they are proficient in, with the explanation delivered before signing, and they signed a separate document confirming they received that information and naming who gave it to them;
- neither the agreement nor those writings were executed under duress, fraud or undue influence, and no party lacked capacity; and
- any other factor the court considers relevant.
The practical consequence, confirmed by the Court of Appeal in Last v. Superior Court (2023) 94 Cal.App.5th 30, is that the spouse seeking to enforce the agreement has to be ready to put on evidence supporting every one of those findings. Until the court makes them, the agreement is treated as involuntary and unenforceable. An agreement that looks compliant on its face is not enough; the findings have to actually be requested and made.
The Seven-Day Rule — and Why There Are Really Two of Them
Almost everyone who has heard of California prenuptial law has heard about a seven-day rule. Fewer know there are two separate seven-day requirements in section 1615(c), running on different clocks.
The advisement clock
Section 1615(c)(1) requires that the advisement to seek independent legal counsel be made at least seven calendar days before the final agreement is signed. The Legislature declared this provision to be declaratory of existing law, so it is not limited to recent agreements.
The review clock
Section 1615(c)(2) gives the party against whom enforcement is sought at least seven calendar days between first being presented with the final agreement and signing it. For agreements executed on or after 1 January 2020 this applies regardless of whether that party is represented by counsel. That was a deliberate change: Assembly Bill 1380, chaptered as Statutes 2019, chapter 193, superseded prospectively the Court of Appeal decision in In re Marriage of Cadwell-Faso & Faso (2011) 191 Cal.App.4th 945, which had held the review period did not apply to a party represented from the outset. For agreements executed before 2020, the older rule still governs.
How it is actually blown
- The days are calendar days, not business days.
- The clock runs from presentation of the final agreement. A substantive change restarts it. Only amendments that do not change the terms are exempt.
- The wedding-week signing is the classic failure. If the dress is bought and the venue is paid for, a court has an easy time seeing pressure.
- A recital does not fix it. In In re Marriage of Clarke & Akel (2018) 19 Cal.App.5th 914 the Court of Appeal held that inserting language into the agreement saying both sides had seven days to review it cannot substitute for the fact when they did not.
- Under the current statute, a failed requirement is not severable the way it once was. The safe assumption is that a process failure takes the whole agreement down, not just the offending clause.
California Postnuptial Agreements Are a Different Instrument Entirely
This is the single most misunderstood point in California marital-agreement law, and it catches out-of-state counsel constantly. The Premarital Agreement Act does not apply to an agreement made during a marriage. Section 1610 defines the covered instrument as one between prospective spouses made in contemplation of marriage. Everything in section 1615 — the seven-day rules, the five findings, the deemed-involuntary presumption — simply does not reach a postnuptial agreement.
What governs instead is the law of transmutation. Family Code sections 850 through 853 allow spouses to change community property into separate property, separate into community, or one spouse’s separate property into the other’s. Section 852(a) is the gate: a transmutation is not valid unless it is made in writing by an express declaration that is made, joined in, consented to or accepted by the spouse whose interest is adversely affected.
What “express declaration” means
The California Supreme Court held in Estate of MacDonald (1990) 51 Cal.3d 262 that a writing is not an express declaration unless it contains language expressly stating that the characterisation or ownership of the property is being changed — and that extrinsic evidence cannot be used to prove a transmutation. A document saying “the Fidelity account belongs to Wife” does not do it. A document saying “Husband hereby transmutes his community property interest in the Fidelity account into Wife’s separate property” does.
The rule is strict in both directions. In In re Marriage of Benson (2005) 36 Cal.4th 1096 the Supreme Court held there is no part-performance exception: an oral agreement, however consistently the parties acted on it, cannot be enforced as a transmutation. In In re Marriage of Valli (2014) 58 Cal.4th 1396 the requirement was applied even to property acquired from a third party during the marriage. Section 852(b) adds that a transmutation of real property is not effective against third parties without notice unless it is recorded.
The fiduciary duty between spouses
Family Code section 721(b) puts spouses in a confidential relationship with each other in transactions between themselves, imposing a duty of the highest good faith and fair dealing, and forbidding either from taking unfair advantage of the other. Where one spouse obtains an unfair advantage from an interspousal transaction, a presumption of undue influence arises and the burden shifts to the advantaged spouse to rebut it — In re Marriage of Haines (1995) 33 Cal.App.4th 277. To rebut it, that spouse must show the transaction was freely and voluntarily made, with full knowledge of the facts and a complete understanding of its effect: In re Marriage of Delaney (2003) 111 Cal.App.4th 991.
The qualifier matters. In In re Marriage of Burkle (2006) 139 Cal.App.4th 712 the Court of Appeal held that the advantage triggering the presumption must be an unfair one. A negotiated postnuptial agreement conferring mutual advantages, with independent counsel on both sides, did not raise the presumption at all. The lesson for drafting is direct: build the record that shows a real negotiation, real disclosure and real independent advice, and the presumption never gets off the ground.
One open question worth stating plainly rather than papering over: whether a mid-marriage waiver of spousal support, outside the context of an immediate separation, is enforceable in California is not settled by controlling authority. Section 1612(c) by its terms governs premarital agreements. Anyone told otherwise should ask to see the citation.
What a California Agreement Cannot Do
- It cannot reduce or waive child support. Family Code section 1612(b). Provisions attempting it are void, and courts set them aside without much ceremony.
- It cannot fix custody or parenting time. Those are decided on the child’s best interests at the time the question arises, and no agreement binds the court.
- It cannot waive a retirement plan survivor benefit before marriage. This is federal, and it defeats otherwise perfect agreements. Under 26 C.F.R. section 1.401(a)-20, Q&A-28, consent given in a premarital agreement does not satisfy the spousal consent requirements for a qualified plan. The waiver has to be signed by the spouse, after the marriage, on the plan’s own form. An IRA follows different rules again.
- It cannot rescue a void marriage. Section 1616 enforces the agreement only so far as necessary to avoid an inequitable result.
- It cannot be changed by conduct. Section 1614 requires a signed writing.
If You Signed Somewhere Else, or You Are Moving
An agreement signed in another state does not automatically fail in California, and it does not automatically work either. Section 1612(a)(6) lets the parties choose the law that governs construction of the agreement, which helps, but a choice-of-law clause is not a force field: California courts will still apply California public policy to a California dissolution, and the section 1612(c) rule on spousal support is the kind of provision that does not yield easily to a clause drafted in another state.
The practical problem is more ordinary than a conflicts-of-law argument. Couples move. A prenuptial agreement drafted in Texas for a community property regime with an enforcement-friendly statute, then read years later by a California judge applying section 1615(c), can fail on the process it never had to satisfy. If you signed an agreement elsewhere and now live in California — or you live here and expect to leave — the agreement should be reviewed against the law of the state that will actually read it, and in many cases restated.
This firm is admitted in Idaho, California, Texas, Washington, North Carolina and Massachusetts, and drafts marital agreements in all six. Each state’s rules are set out separately: Texas, Washington, North Carolina, Massachusetts, and Idaho.
Marital agreements also sit alongside the estate plan rather than apart from it. A California agreement that characterises property one way while a trust, a deed or a beneficiary designation says something else is a problem waiting for a date. See California estate planning and California trusts.
How These Agreements Fail in California
- The seven-day review period. The most common single defect, and since 2020 it applies even when both sides have lawyers.
- The advisement deadline. The advice to get independent counsel has to precede signing by seven calendar days too, and a waiver of counsel has to be in a separate writing.
- The unrepresented-party package. Three separate items: a written explanation of the terms and what is being given up, delivered before signing; language proficiency; and a signed declaration naming who provided the explanation. A waiver of counsel does not substitute for any of them.
- Disclosure built after the fact. Schedules assembled during litigation are worth very little. Schedules dated, attached and initialled at signing are worth a great deal.
- A support waiver signed without independent counsel. Section 1612(c) removes it.
- A postnuptial agreement drafted as though it were a prenuptial one. No express declaration of transmutation, no disclosure, no independent counsel — and a presumption of undue influence the drafting spouse then has to rebut.
- Retitling instead of transmuting. Moving an account into joint names, or a deed into both names, does not by itself accomplish what the parties think it does.
- Nobody asked the court for findings. Under Last, the agreement stays presumptively involuntary until the section 1615(c) findings are made.
Frequently Asked Questions
How far before the wedding should a California prenuptial agreement be signed?
The statutory minimum is seven calendar days from presentation of the final agreement, but the minimum is a floor and not a target. Starting three to six months out is realistic: it leaves room for disclosure, for the other side to retain counsel, and for negotiation that would otherwise restart the seven-day clock every time a term changes.
Do both of us need our own lawyer?
For anything touching spousal support, yes — section 1612(c) makes independent counsel a precondition for the party against whom that provision would be enforced. For the rest of the agreement it is not strictly required, but an unrepresented party triggers the written-explanation package in section 1615(c)(3), and a court looking at a one-sided agreement signed without advice is not looking at it kindly. One lawyer cannot represent both sides.
Can we sign a prenuptial agreement after the wedding?
No. Section 1613 makes a premarital agreement effective on marriage; once you are married, a different instrument is required and a different body of law applies. It is not simply a late prenuptial agreement, and it should not be drafted as one.
Does a California prenuptial agreement have to be recorded or notarised?
Section 1611 requires a writing signed by both parties; it does not require recording or notarisation. Notarisation is nonetheless sensible for proof, and a transmutation of real property must be recorded under section 852(b) to be effective against third parties without notice.
We are already married and want to protect a business. What do we sign?
A postnuptial agreement, drafted as a transmutation under sections 850 to 853, with an express declaration under section 852(a), full disclosure on both sides and independent counsel for each spouse. The goal is not merely a valid document; it is a record that rebuts the section 721 presumption before anyone has to argue about it.
Is a prenuptial agreement only for wealthy people?
No. The clearest cases are often the ordinary ones: a spouse bringing student debt into the marriage, a first home bought with one family’s help, children from an earlier relationship, or a small business that predates the marriage and will keep running after it.
Talk to Holmes Law
Holmes Law is a solo practice. The attorney who takes your call is the one who drafts the agreement, and the drafting is done to the California process requirements rather than to a national template. If you are engaged, already married, or holding an agreement signed in another state that nobody has looked at since, that is the conversation to have.
Call the Southern California line at (714) 464-5188 or the Northern California line at (707) 207-8005, or use the California contact page.