The Insurer's Duty to Investigate: When a Sloppy Investigation Becomes Bad Faith

Every insurance company in California has a legal obligation to conduct a thorough, fair, and objective investigation appropriate to the claim — calibrated to the facts, the coverage, and the documentation, but never reduced to a cursory review that fails to develop the facts material to coverage. This is not optional — it is mandated by the California Insurance Code, the Fair Claims Settlement Practices Regulations, and decades of case law. When an insurer fails to properly investigate and denies or underpays your claim as a result, that failure can itself constitute bad faith — regardless of whether the claim would ultimately have been covered.

The Legal Foundation

The insurer's duty to investigate is grounded in several overlapping authorities:

• Insurance Code § 790.03(h)(3): It is an unfair claims settlement practice to fail to adopt and implement reasonable standards for the prompt investigation and processing of claims.
• Insurance Code § 790.03(h)(4): Failing to affirm or deny coverage within a reasonable time after proof of loss has been completed.
• 10 CCR § 2695.7(d): Every insurer shall conduct and diligently pursue a thorough, fair and objective investigation and shall not persist in seeking information not reasonably required for or material to the resolution of a claim dispute.
• The implied covenant of good faith and fair dealing: Every insurance contract includes an implied promise that the insurer will deal fairly with the insured. A shoddy investigation can breach that promise.

Under Moradi-Shalal v. Fireman's Fund Ins. Co.(1988) 46 Cal.3d 287, an insured cannot sue directly under § 790.03 or the Fair Claims Settlement Practices Regulations — those provisions do not create a private cause of action. They inform the standard of care for a common-law bad-faith claim brought under the implied covenant. The duty to investigate, then, is enforced in private litigation through the common-law bad-faith framework that the statutory and regulatory standards help define.

California cases applying these standards add an important balance: under Wilson v. 21st Century Ins. Co.(2007) 42 Cal.4th 713, an insurer is not liable for bad faith when its position rests on a genuine, good-faith dispute — but only when the position was reached through a thorough and fair investigation. The duty to investigate is the gateway: if the investigation was inadequate, the genuine-dispute defense generally does not protect the insurer; if the investigation was thorough and the position reached was objectively reasonable, the doctrine often does. The standards below are evaluated in that framework.

What a Proper Investigation Looks Like

A thorough investigation means the insurer must:

1. Timely acknowledge and begin investigating. Under 10 CCR § 2695.5(e), the insurer must acknowledge the claim and begin investigation within 15 calendar days of receiving notice.
2. Inspect the property. The insurer must physically inspect the damage — not just rely on photos, satellite imagery, or desk reviews. For complex losses, this may require multiple inspections, destructive testing, or specialized experts.
3. Consider all available evidence.The insurer cannot cherry-pick evidence that supports a denial while ignoring evidence that supports coverage. They must consider the policyholder's documentation, contractor estimates, expert reports, and any other evidence submitted.
4. Disclose all applicable coverages.Under 10 CCR § 2695.4(a), the insurer must disclose to a first-party claimant or beneficiary all benefits, coverages, time limits, or other provisions that may apply to the claim. The insurer cannot stay silent about a coverage that might benefit the policyholder.
5. Communicate findings. The insurer must explain what they found, what they are paying, what they are not paying, and why — in writing, with specific policy references.
6. Not seek irrelevant information. The insurer cannot use the investigation as a fishing expedition — demanding years of financial records, unrelated medical history, or other information not material to the claim.

Signs of an Inadequate Investigation

• Drive-by or cursory inspection. The adjuster spent 20 minutes on a six-figure loss. They did not go in the attic, crawl space, or behind walls. They took a few photos and left.
• Desk review only. The insurer made a coverage decision based on photos or a Google Earth review without ever sending someone to the property.
• Ignoring your evidence.You submitted a contractor estimate, an engineer's report, or photos of damage. The insurer's estimate does not address or even mention this evidence.
• Using biased experts. The insurer hired an engineer or hygienist who always produces insurer-favorable results, and relied on that report without independent verification.
• Failing to investigate promptly. Months pass with no inspection, no communication, no progress. Delay is itself an investigation failure.
• Premature denial. The insurer denied the claim before completing the investigation — sometimes before even inspecting the property.
• Failing to disclose applicable coverages. The insurer pays on Coverage A but never mentions that ordinance or law, debris removal, or other coverages also apply.

Your Rights During the Investigation

• You can be present during inspections. Do not let the adjuster inspect alone. Be there (or have your representative there) to point out damage and ensure it is documented.
• You can have your own expert present.Bring your contractor, Public Adjuster, or other professional to the inspection. They can identify damage the insurer's adjuster might miss or minimize.
• You can request claim file documentation.California regulations require the insurer to provide certain claim-related documentation upon request — including the carrier's estimate, written denials with specific factual and policy bases (10 CCR § 2695.7(b)(1)), and disclosure of applicable coverages (10 CCR § 2695.4(a)). The scope of what the insurer must produce varies; some materials (such as attorney-client communications or work product prepared in anticipation of litigation) may be withheld. Where the insurer refuses to produce documents that should be available, raising the issue in writing — and, if necessary, in a CDI complaint — is the standard path.
• You can submit your own evidence at any time.The insurer must consider material evidence you submit. If you get a contractor estimate after the insurer's initial inspection, submit it in writing and request that it be considered as part of the carrier's analysis. “Consider” is not the same as “adopt” — the insurer is required to evaluate the evidence, not necessarily accept it.

What to Do If the Investigation Is Inadequate

1. Document the deficiency in writing. Send a letter (email or certified mail) to the adjuster and their supervisor identifying specifically what was inadequate: areas not inspected, evidence not considered, damage not documented.
2. Demand a re-inspection. Request that the insurer send a more experienced adjuster or a qualified expert to conduct a proper inspection.
3. Submit your own documentation. Hire your own contractor, engineer, or professional to inspect and document the damage. Submit their report to the insurer with a demand that it be considered.
4. File a CDI complaint. A complaint with the California Department of Insurance creates an official record that the insured raised concerns about the investigation. CDI may investigate and act on systemic issues; the complaint itself documents the allegation rather than proves the failure. See filing a CDI complaint.
5. Consider professional representation. A Public Adjuster can take over the claims process and document any investigation deficiencies in real time. If the facts suggest bad faith, an attorney can evaluate whether the conduct supports a claim for damages beyond the policy benefits.