Conversion Claims in California Business Disputes: Money, Equipment, Data, and Accounts

Last updated: October 2026

Conversion is the civil claim for taking or keeping someone else's personal property. In a California business dispute it covers a partner who empties an account, a vendor who keeps equipment after the contract ends, a former employee who walks out with company files, and a customer who refuses to return consigned inventory. The plaintiff proves ownership or the right to possess, the defendant's wrongful act of dominion, and damages. The recovery is the property's value at the time of conversion with interest, or the loss proximately caused by the taking, plus compensation for the time and money spent recovering the property. (Civ. Code, § 3336.) Kolmogorov Law, P.C. brings and defends conversion claims for businesses in Orange County, Los Angeles, and across California.

Call (909) 235-6116 or contact us online if your company's property or money is in someone else's hands.

What conversion is

Conversion is intentional interference with another person's possession of personal property, serious enough that the law treats it as a forced sale. The defendant is made to pay the property's value. The intent required is only the intent to exercise control over the property, not an intent to steal. A defendant who honestly believed the equipment was his can still be liable for conversion. That makes it easier to prove than fraud or theft, and it is why conversion appears in most business complaints involving missing money or property.

The elements are simple. The plaintiff owned or had the right to possess the property. The defendant substantially interfered with it. That means knowingly or intentionally taking it, blocking the plaintiff's access to it, destroying it, or refusing to return it after a demand. The plaintiff did not consent. The plaintiff was harmed, and the defendant's conduct was a substantial factor in causing the harm.

Money can be converted, with a condition

Business owners often ask whether conversion covers money. It does, when the money is a specific, identifiable sum: the $85,000 in the escrow account, the proceeds of a particular invoice, the funds a partner wired from the operating account on a given date. A generalized claim that the defendant owes money under a contract is not conversion; that is a breach of contract claim. We plead conversion for the identifiable transfers and contract or accounting claims for the rest.

Equipment, inventory, vehicles, and records

These are the classic subjects. Conversion is the damages claim; the companion remedy to get the property itself back during the case is a writ of possession through the claim and delivery procedure, and the two are usually pleaded together. The choice between them depends on whether the client needs the thing or the money. Our judgment enforcement page covers the collection tools that follow a judgment.

Data and files

Electronic data raises a harder question. California courts have allowed conversion claims for certain intangible property that is represented by or merged with a tangible thing, and have been more cautious about pure information. For a departed employee who copied the customer database, we usually lead with trade secret and Penal Code section 502 claims and add conversion for the physical devices and any files whose taking deprived the company of its only copy. Our page on employee theft and embezzlement covers the full set.

Damages

The statute presumes two components of detriment. (Civ. Code, § 3336.) The first is the value of the property at the time of conversion, with interest from that time. In the alternative, it is an amount sufficient to indemnify the injured party for the loss that is the natural, reasonable, and proximate result of the wrongful act, where a proper degree of prudence would not have averted it. The second is fair compensation for the time and money properly spent in pursuit of the property.

Two practical points follow. First, interest runs from the date of conversion, not the date of judgment, which matters in a case that takes two years. Second, the cost of chasing the property, including investigators and recovery efforts, is recoverable. Where the conversion was done with malice, oppression, or fraud, punitive damages are available on the usual clear and convincing showing. And where the taking was theft with criminal intent, Penal Code section 496 adds treble damages and attorney fees.

The limitations period

A conversion claim must generally be filed within three years. The period runs from the conversion, though California applies a discovery rule when the defendant fraudulently concealed the taking. Our statutes of limitations guide lists the periods for related claims. Because the clock starts at the taking, a business that discovers a years-old diversion needs to act quickly and to document when and how it discovered the loss.

Defending a conversion claim

The defenses track the elements. The plaintiff did not own or have the right to possess the property; a co-owner's claim against another co-owner is a frequent example, and the dispute often belongs in a partnership accounting rather than a conversion claim. The defendant had consent or a contractual right to hold the property, such as a lien or a security interest. The money was not a specific identifiable sum. The claim is time-barred. And on damages, the plaintiff's valuation is inflated or the property was returned, which reduces the claim to the loss of use.

Where these cases are heard

Conversion claims are filed with the rest of the business case in the Superior Court: the Central Justice Center in Santa Ana for Orange County, the Stanley Mosk Courthouse for Los Angeles. Claims involving federal trade secret or computer fraud statutes may be filed in the Central District of California with conversion pleaded as a supplemental state claim.

What to bring to the first meeting

Bring proof of ownership or the right to possession, and the demand for return if one was made, with the response. For money claims, bring the bank records or transfer confirmations. For equipment, bring photographs and serial numbers, and an estimate of value with support. If the property has been returned, bring the dates; loss of use is calculated from them.

Frequently asked questions

What are the elements of conversion in California?

Ownership or right to possession of personal property, the defendant's intentional and substantial interference with it, lack of consent, harm, and causation. Intent to steal is not required; intent to exercise control is enough.

Can I sue for conversion of money in California?

Yes, if the money is a specific identifiable sum, such as funds transferred from a particular account on a particular date. A general debt owed under a contract is not conversion.

What damages can I recover for conversion?

The value of the property at the time of conversion with interest from that date, or the loss proximately caused, plus fair compensation for time and money spent recovering the property. (Civ. Code, § 3336.) Punitive damages are available for malicious conduct, and treble damages under Penal Code section 496(c) where the taking was theft.

How long do I have to sue for conversion in California?

Generally three years from the conversion, with a discovery rule where the taking was fraudulently concealed. See our statutes of limitations guide and confirm the period for your facts.

Is conversion the same as theft?

No. Theft requires criminal intent. Conversion requires only intentional control over property belonging to someone else, so a defendant who acted in good faith can still be liable for conversion but not for theft.

Talk to a California business litigation attorney

If your company's money, equipment, or records have been taken or withheld, call (909) 235-6116 or contact us online. Kolmogorov Law, P.C. is at 327 Magnet, Irvine, CA 92618, and represents businesses in Orange County, Los Angeles, and throughout California. See also our business fraud page.

This page provides general information about California law and is not legal advice. Outcomes depend on the ownership documents, the evidence of the taking, and the court.