Diminished value claims in California

Can you claim diminished value in California?

Short answer: Yes, from the at-fault driver's insurer (CACI No. 3903J).

Third-party: CACI 3903J tells juries that if a repaired vehicle is still worth less than before the harm, damages are the difference between its value immediately before the harm and its value after repair, plus the reasonable cost of repair, capped at the pre-harm value. The directions for use cite Merchant Shippers Ass'n v. Kellogg Express & Draying Co. (1946) 28 Cal.2d 594 for this rule. First-party: Ray v. Farmers Ins. Exchange (1988) held a collision policy did not obligate the insurer to pay for diminution in market value after repair; CACI's directions for use also note an insurer may draft its policy to limit recovery to repair cost or diminution, not both (Baldwin v. AAA N. Cal., Nev. & Utah Ins. Exch. (2016) 1 Cal.App.5th 545).

Source: CACI No. 3903J; Merchant Shippers Ass'n v. Kellogg Express & Draying Co., 28 Cal.2d 594 (1946); Ray v. Farmers Ins. Exchange, 200 Cal. App. 3d 1411 (1988); Baldwin v. AAA N. Cal., Nev. & Utah Ins. Exch., 1 Cal.App.5th 545 (2016)

See which states allow diminished value claims.

Does your own insurance pay diminished value in California?

Short answer: Usually not. The claim is normally against the at-fault driver's insurer.

A claim on your own collision coverage depends on what your policy promises. Read its definition of "loss" and any exclusion for diminution in value before you ask. The California rule above is the starting point; your policy wording can narrow it.

How to file a diminished value claim in California

1. Finish the repair and get the final invoice showing every part and labor operation.
2. Document the pre-accident value of your exact trim and mileage.
3. Collect proof of the loss: a vehicle history report showing the accident, written trade-in offers, or an independent appraisal.
4. Send a written demand to the at-fault driver's insurer with a specific amount and your evidence.
5. If they refuse or lowball, you can sue the at-fault driver in small claims court before the deadline.

How to document the value before and after

• Before: save listings for cars of the same year, trim and mileage from just before the accident, and any records of options, upgrades and maintenance.
• After: get at least two written trade-in or purchase offers from dealers who see the repaired car and its history report.
• Keep the repair invoice, photos of the damage and the history report entry; they show what a buyer will see.

Step-by-step help with each part: how to file a diminished value claim.

Will the insurer use the 17c formula in California?

Many adjusters calculate diminished value by capping it at 10% of the car's value and then applying damage and mileage multipliers. The result is often a few hundred dollars. It is not based on what buyers actually pay, and you do not have to accept it. How the 17c formula works.

Deadline to file a diminished value claim in California

Short answer: You generally have 3 years to sue the at-fault driver for damage to your car (Cal. Code Civ. Proc. § 338(c)(1)). Send your written demand well before then.

Property damage claims in California generally must be filed in court within 3 years of the accident.

Source: Cal. Code Civ. Proc. § 338(c)(1) (taking, detaining, or injuring goods or chattels: 3 years)

How to file an insurance complaint in California

Short answer: File a free complaint with the California Department of Insurance online. It asks the insurer for a written response, but it cannot set the amount you are owed.

If an insurer ignores your claim or will not explain a refusal, the state insurance regulator takes complaints.