One of the most common reasons clients seek a marital agreement is to protect separate property.

Without a properly drafted agreement, separate property interests can become complicated when assets are commingled, refinanced, improved with community funds, jointly titled, or used for the benefit of the marital estate. A well-crafted agreement can help preserve separate-property rights and reduce future disputes.

This is particularly important for:

• Business owners;
• Professionals with established practices;
• Individuals entering marriage with substantial assets;
• Parties expecting future inheritances;
• Real estate investors; and
• Individuals with children from prior relationships.

California law imposes strict requirements when spouses wish to change the character of property.

Family Code section 852 governs what are known as transmutations—agreements that convert separate property into community property, community property into separate property, or one spouse’s separate property into the separate property of the other spouse. Under Section 852, a valid transmutation generally requires an express written declaration signed by the spouse whose ownership interest is adversely affected.

Many individuals mistakenly believe that adding a spouse to title, opening a joint account, or informally agreeing that property belongs to both spouses automatically changes the property’s character. In many cases, it does not.

The California Supreme Court’s decision in Marriage of Valli confirmed that courts will strictly enforce Section 852’s requirements. Likewise, Marriage of Benson emphasized that courts will not infer a transmutation from ambiguous conduct or informal documentation.

Properly drafted prenuptial and postnuptial agreements can help avoid costly disputes regarding property characterization and ownership.

Business interests are frequently among the most valuable assets involved in a divorce.

A prenuptial or postnuptial agreement can define ownership rights, address future appreciation, establish management control, and minimize disputes regarding business valuation and division.

We regularly assist entrepreneurs, physicians, dentists, attorneys, executives, consultants, and other professionals seeking to protect business interests and professional goodwill before marital disputes arise.

California law permits parties to address spousal support within a prenuptial agreement, subject to important legal limitations.

Because spousal support provisions are closely scrutinized by California courts, careful drafting is essential. An improperly drafted provision may be unenforceable even if the remainder of the agreement remains valid.

Whether you seek to limit future support exposure, preserve support rights, or create a customized support structure, experienced legal guidance is critical.

One of the most common reasons marital agreements are challenged is the alleged failure to provide complete financial disclosure.

California law requires transparency regarding assets, debts, income, and financial obligations. An agreement entered into without adequate disclosure may later be vulnerable to attack.

Our firm works closely with clients to ensure that all required disclosures are properly prepared and documented to maximize enforceability.

California courts closely scrutinize prenuptial agreements. A premarital agreement that is improperly drafted or executed may be partially or entirely unenforceable years later when the parties divorce.

Family Code section 1615 establishes the standards governing the enforceability of premarital agreements. Under that statute, a premarital agreement may be found unenforceable if the party challenging the agreement proves that he or she did not execute the agreement voluntarily or that the agreement was unconscionable when signed and entered into without adequate financial disclosure.

Among other requirements, California law generally requires:

• A written agreement signed by both parties;
• Full and fair disclosure of assets, debts, income, and financial obligations;
• Compliance with California’s statutory seven-day review period;
• An opportunity to consult with independent legal counsel;
• A knowing and voluntary waiver of rights;
• Absence of fraud, duress, coercion, or undue influence; and
• Compliance with all applicable statutory requirements.

The California Supreme Court’s decision in Marriage of Bonds remains one of the most frequently cited cases addressing voluntariness and enforceability of premarital agreements. Although California law has evolved since that decision, Bonds continues to influence how courts analyze challenges to premarital agreements.

Yes. While California courts generally enforce valid premarital agreements, a prenuptial agreement is not automatically enforceable simply because both parties signed it.

A premarital agreement may be invalidated in whole or in part if the court finds that the agreement does not comply with California law or is otherwise unenforceable under Family Code section 1615.

A premarital agreement must be entered into voluntarily. Courts may examine:

• Whether one party was pressured to sign;
• Whether the agreement was presented shortly before the wedding;
• Whether a party had sufficient time to review the agreement;
• Whether independent legal counsel was involved; and
• Whether there was evidence of coercion, duress, or undue influence.

California law generally requires that at least seven calendar days pass between the time a party is first presented with the final agreement and the time the agreement is signed.

Failure to comply with this requirement can jeopardize enforceability.

A valid premarital agreement requires meaningful financial disclosure.

Challenges frequently arise when one spouse alleges that the other failed to disclose:

• Assets;
• Business interests;
• Income;
• Debts;
• Investment accounts;
• Real estate holdings; or
• Other material financial information.

Although an agreement is not invalid merely because it favors one party, courts may refuse to enforce provisions that are unconscionable under the circumstances.

Spousal support provisions are among the most heavily litigated portions of many premarital agreements. California courts apply heightened scrutiny to support waivers and limitations, and a court may invalidate a support provision while enforcing the remainder of the agreement.

A premarital agreement may also be challenged where one party concealed assets, misstated financial information, or otherwise induced the other party to sign through fraud or misrepresentation.

Yes.

In many cases, a court may determine that one provision of a premarital agreement is unenforceable while leaving the remainder of the agreement intact. For example, a court may invalidate a spousal support waiver while enforcing the property division provisions.

Whether a defective provision can be severed from the remainder of the agreement depends upon the language of the agreement and the specific facts of the case.

Not all agreements are enforceable. Likewise, not every challenge succeeds.

Common claims include:

• Failure to provide complete financial disclosures;
• Duress or undue influence;
• Lack of independent legal counsel;
• Failure to comply with Family Code section 1615;
• Unconscionability;
• Defective transmutations under Family Code section 852;
• Fraud or concealment; and
• Improper spousal support waivers.

These disputes often involve extensive discovery, tracing of assets, forensic accounting, expert testimony, and complex legal analysis.

Our firm represents clients both seeking to enforce marital agreements and challenging agreements that fail to comply with California law.

A properly drafted prenuptial or postnuptial agreement is more than a legal document—it is a financial roadmap that can provide certainty, protect assets, preserve family wealth, and reduce future conflict.

Whether you are considering a prenup before marriage, negotiating a postnup after marriage, seeking to protect a business or inheritance, or litigating the enforceability of an existing agreement, our firm provides sophisticated representation tailored to your unique circumstances.

We regularly advise clients regarding Family Code sections 852 and 1615, transmutation issues, separate property protection, spousal support provisions, business ownership concerns, and the California appellate decisions that govern marital agreements. Our goal is simple: to create agreements that accomplish our clients’ objectives while maximizing the likelihood that they will withstand scrutiny if ever challenged in court.