The Biggest Mistakes People Make in a Contested Divorce

Most people facing a contested divorce in San Diego County come to this question mid-case, often late at night, wondering whether something they already signed, said or skipped is going to follow them into the courtroom. Maybe a disclosure deadline slipped by. Maybe a spouse has hinted at hidden accounts, or a custody counseling appointment is on the calendar and nobody has explained what it really is. The worry is concrete: did that step just cost money, time with the children, or credibility with the judge?

This article walks through those mistakes one at a time: what the law requires, what the error looks like in practice, and what the court can do about it.

California is a no-fault, community property state, and that framework decides which mistakes matter. No-fault means a spouse does not have to prove wrongdoing to end the marriage, so blame rarely moves the property outcome. Community property, under Family Code section 760, is generally all property acquired by a married person during the marriage while domiciled in California. Because the estate is divided by rule rather than by sympathy, the costly errors are procedural and evidentiary: what was disclosed, what was proven, and when.

The mistakes in a contested case tend to fall into three groups. Disclosure failures can expose a judgment to being set aside. Financial missteps can shift value from one spouse to the other. Custody errors can shape what a counselor recommends and what a judge orders.

Timing is a fourth thread running through all three. Under Family Code section 2339, no judgment ending the marriage is final until six months have passed from the date the summons and petition were served or the date the respondent appeared in the case, whichever occurs first, and the court may extend that period for good cause. The clock does not start at filing. For someone in a contested divorce in San Diego County, that distinction alone changes how the early months are planned.

Under Family Code section 2104(f), each spouse serves a preliminary declaration of disclosure, a sworn listing of assets, debts and income, either with the petition or response or within 60 days of filing it, unless the parties extend that time by written agreement or the court extends it by order. A petitioner who served by publication or posting and then receives a response has 30 days from that response. Missing the window without a written extension or court order is one of the most common, and most avoidable, mistakes.

The final declaration of disclosure carries its own deadline. Family Code section 2105(a) says that, except by court order for good cause, each party serves a final declaration of disclosure and a current income and expense declaration, executed under penalty of perjury, before or at the time the parties enter into an agreement resolving property or support issues other than pendente lite (temporary) support, or, if the case goes to trial, no later than 45 days before the first assigned trial date. The parties can mutually waive the final declaration, but under section 2105(d) that waiver must be executed under penalty of perjury, in open court or by separate stipulation.

The mistake usually looks ordinary. Someone understates income because a bonus "hasn't hit yet," leaves off a retirement account they assume is separate, or forgets a crypto wallet or a side business. Incomplete or inaccurate disclosure can expose a judgment to being set aside later, which means reopening a case both spouses thought was finished.

The law gives the other spouse tools. Under Family Code section 2107, a spouse who has served their own disclosure may request a missing declaration or further particularity, and if the other side does not comply, may take steps including filing a motion to compel a further response. Underneath all of this sits Family Code section 721(b), which makes spouses fiduciaries to each other, with a duty of the highest good faith and fair dealing. Under Family Code section 1101, a breach that impairs the other spouse's one-half interest gives that spouse a claim, and the court may order an accounting. These are the starting points in most financial disputes involving hidden assets.

The section 760 definition above is the starting point, but it is not the whole story. The most persistent misconception is about timing. Under Family Code section 2552, the court values community assets and debts as near as practicable to the time of trial. On 30 days' notice, the court may for good cause value all or part of the estate at a date after separation and before trial, to divide it equally in an equitable way. Property is not valued as of the date of separation. A spouse who assumes a brokerage account or a house is "frozen" at its separation-day value may be planning around the wrong number.

Reimbursement is the second trap. Under Family Code section 2640, a spouse who put separate-property money into community property may be reimbursed for that contribution to the extent it can be traced to a separate-property source, unless the right to reimbursement was waived in writing. Without documents that trace the money, the claim is hard to prove.

Moore/Marsden apportionment is a related but different claim, and the two are easy to blend together by mistake.

Businesses can add another layer, and arriving at trial without a supported valuation leaves the court with only the other side's number.

Rushing is the mistake people make when they are exhausted and want the case over. The six-month period under section 2339, described above, sets the earliest date the marriage itself can end, but it does not require the property and support terms to be settled by then. Signing an agreement before the final declaration and income and expense declaration under section 2105(a) have been served, or properly waived, can produce an agreement vulnerable to being set aside. A fast signature is not the same as a final one.

Delay costs something too. Because section 2552 ties valuation to the time of trial, a stalled case can let asset values and debts move in ways neither spouse controls. Stalling to run up the other side's costs carries its own risk. Family Code section 271 lets the court award attorney's fees and costs as a sanction based on how far a party's or attorney's conduct frustrates the policy of promoting settlement and reducing litigation costs, while considering the parties' incomes, assets and liabilities, and the sanction may not impose an unreasonable financial burden. Firm preparation and strategic use of court procedure are different from delay for its own sake, and the court can tell them apart.

Family Code section 3170(a) is direct: when custody, visitation or both are contested, the court shall set the contested issues for mediation. It is not optional. In San Diego County, that mediation is child custody recommending counseling with the court's Family Court Services, under Family Code sections 3170 and 3183.

The counselor's role is easy to underestimate. Under section 3183(a), the mediator, called a child custody recommending counselor, may, consistent with local court rules, submit a recommendation to the court about custody or visitation, if the parties and their attorneys first receive it in writing before the hearing. The court asks at the hearing whether they received it. Family Court Services explains that if no agreement is reached, the counselor makes a recommendation and the court hearing proceeds. The judge decides, but the recommendation is part of what the judge reads.

The judge applies the best-interest standard. Family Code section 3011 requires the court to consider factors including the health, safety and welfare of the child; any history of abuse by a parent or person seeking custody; and the habitual or continual illegal use of controlled substances, the habitual or continual abuse of alcohol, or the habitual or continual abuse of prescribed controlled substances. Under Family Code section 3040(a)(1), when granting custody to either parent the court considers, among other factors, which parent is more likely to allow the child frequent and continuing contact with the noncustodial parent, consistent with sections 3011 and 3020.

Two mistakes follow from this. One is walking into the counseling session unprepared, as though it were a casual chat. The other is saying, in session, in texts or in court papers, that the other parent should be cut out of the child's life when no safety concern supports it, which speaks directly to the frequent-and-continuing-contact factor. A parent in a custody battle is building a record from the first conversation.

If you are in immediate danger, call 911.

Under Family Code section 3044(a), when the court finds that a party seeking custody perpetrated domestic violence within the previous five years against the other party, the child, the child's siblings, or certain others listed in section 3011, there is a rebuttable presumption that awarding that person sole or joint physical or legal custody is detrimental to the child's best interest. Under section 3044(b)(1), neither the preference for frequent and continuing contact with both parents nor the preference for contact with the noncustodial parent may be used to rebut it, in whole or in part. Assuming the frequent-contact factor can balance out a domestic violence finding is one of the most consequential misunderstandings in custody law.

Procedure matters as much as substance here. Under Family Code section 243, a domestic violence restraining order petition, any temporary restraining order and the notice of hearing must be personally served on the respondent at least five days before the hearing, unless the court shortens the time. The respondent may file a response explaining or denying the allegations. More on how these orders work appears in the discussion of restraining orders.

Emergency custody runs on a separate standard. Under Family Code section 3064(a), the court refrains from granting or modifying custody on an ex parte basis, meaning on short notice without a full hearing, unless there is a showing of immediate harm to the child or immediate risk that the child will be removed from California. Under section 3064(b), immediate harm includes, among other things, a parent's domestic violence that is recent or part of a continuing pattern and sexual abuse of the child that is recent or part of a continuing pattern, and the court must consider a parent's illegal access to firearms and ammunition. Requests that do not meet that showing are often set for a regular hearing instead; the emergency custody process has its own rhythm.

For the counseling stage, section 3170(b) provides that domestic violence cases are handled by Family Court Services in accordance with a separate written protocol approved by the Judicial Council.

Evidence is whatever the court can lawfully consider: documents, testimony, records from banks and employers, expert reports. How it is obtained matters. Penal Code section 632 generally prohibits intentionally recording a confidential communication without the consent of all parties to it, subject to limited statutory exceptions, with penalties that can include a fine of up to $2,500 per violation (up to $10,000 for a repeat violation) and imprisonment in a county jail or state prison. The section covers confidential communications, not every recording, but secretly recording a private conversation with a spouse can create criminal exposure, not just an evidence problem.

Accessing a spouse's email, phone, cloud storage or financial logins without permission is a separate mistake, governed by other laws, and it can damage credibility with the court even when the material seems helpful. People in high-conflict cases sometimes reach for these shortcuts out of frustration that the other side is hiding things.

The court has lawful tools designed for exactly that frustration. Formal discovery lets a party serve written questions, requests for production of documents, and subpoenas to banks, employers and other third parties. Depositions put witnesses under oath. Section 2107 gives a motion to compel when disclosures fall short, and section 1101 allows the court to order an accounting. Forensic accountants can work from subpoenaed records to trace money. Evidence gathered this way holds up.

Many of these errors can be corrected. A late or thin preliminary disclosure can be served or supplemented, and the other side's request under section 2107 can be met before it turns into a motion. Under Family Code section 2107(d), a judgment entered when the parties did not comply with the disclosure requirements can be set aside, subject to the exceptions in that subdivision. A settlement signed under pressure can sometimes be revisited depending on how and when it was made.

Some mistakes are harder to undo. If the parties waived the final declaration of disclosure, the question becomes whether that waiver was executed under penalty of perjury in open court or by separate stipulation as section 2105(d) requires. A statement made in a custody counseling session, or a recording made without consent, cannot be taken back, though its effect can sometimes be addressed with context and other evidence.

Family law cases here are heard by the Superior Court of California, County of San Diego. The California Courts Self-Help Guide and the Judicial Branch of California offer general background on forms and procedure. Recognizing a mistake mid-case is unsettling, but it is far better to see it now than after judgment. San Diego Family Law Advocates practices California family law only, and a high-conflict divorce is often where these questions surface.

Whether a mistake can be fixed usually depends on details: what was disclosed and when, whether a waiver met section 2105(d), what was said in a Family Court Services session, and how evidence was gathered. A conversation about these issues tends to focus on the documents already served, the dates that control the case, and which remedies, from a motion to compel to a request to set aside, fit the facts.

Contact San Diego Family Law Advocates to request a confidential consultation and talk through where things stand.