California Legal Malpractice: Attorney Standard of Care, Causation, and Deadlines
Legal malpractice is professional negligence by an attorney. In California, the elements mirror other professional negligence claims: (1) a duty to use the skill, prudence, and diligence other lawyers commonly possess and exercise, (2) a breach of that duty, (3) a proximate causal connection between the negligent conduct and the injury, and (4) actual loss or damage. An attorney is negligent if they fail to use the skill and care a reasonably careful attorney would use in similar circumstances—the professional “standard of care.”
Lawyers who hold themselves out as specialists are measured against other specialists of ordinary skill in that field. Expert testimony usually defines the standard of care, except where negligence is obvious to a layperson. California instructions also recognize that attorneys need not guarantee success, that reasonable lawyers may choose among alternative strategies, and that referral to a legal specialist may be required when a matter exceeds the lawyer’s competence.
Causation in legal malpractice is often called the “case within a case.” The client must show that, but for the attorney’s negligence, they would have obtained a better result in the underlying matter—such as winning a claim that was lost, recovering more damages, or avoiding a judgment. Typical fact patterns include missed statutes of limitations, failure to investigate or evaluate claims, negligent advice, drafting errors, conflicts of interest, and mishandling of litigation or settlement. When malpractice allegedly caused a criminal conviction, California law imposes additional requirements, including proof of actual innocence.
Deadlines for attorney malpractice are strict. Under Code of Civil Procedure § 340.6, actions generally must be commenced within one year after the plaintiff discovers (or through reasonable diligence should have discovered) the facts of the wrongful act or omission, and in any event within four years from the date of the wrongful act or omission—subject to tolling for continued representation on the same subject matter, actual injury that has not yet occurred, or certain disabilities. Waiting can permanently bar an otherwise valid claim.
If a prior lawyer mishandled your case—missed a deadline, gave deficient advice, failed to investigate, or otherwise fell below the standard of care—Jonny Law can review whether a California legal malpractice claim is viable. This overview is general information only and is not legal advice about any specific case.
If a former attorney’s negligence damaged your case, legal guidance can help you understand whether California legal malpractice law offers a remedy.
Legal Malpractice Hub & Spoke Index
Navigate California legal malpractice topics in layers: category hubs first, then spoke pages for specific errors, specialties, and proof issues. The site header keeps a single Legal Malpractice link; depth lives here.
Category hubs
- legal malpractice FAQ — Answers to common California legal malpractice questions—deadlines, proof, damages, and whether you can sue yo…
- legal malpractice damages — California legal malpractice damages—lost judgments, settlements, extra fees, and collecting on a malpractice …
- missed deadlines legal malpractice — California legal malpractice for missed statutes of limitations, court deadlines, filings, hearings, and defau…
- malpractice by practice area — Malpractice by employment, personal injury, workers’ comp, family, probate, immigration, and other California …
- legal malpractice procedure — Procedure for California legal malpractice—elements, case within a case, experts, privilege, and certificates.…
- legal malpractice lawyer near me — Find California legal malpractice help by city and county. Location pages are expanding—start with our statewi…
Core pillars
- attorney negligence — California attorney negligence lawyers for missed deadlines, bad advice, and case-within-a-case claims. Free c…
- legal negligence — Legal negligence claims in California for attorney errors that cost you a claim, judgment, or settlement. Free…
- breach of fiduciary duty attorney — California lawyers for breach of fiduciary duty by attorneys—conflicts, self-dealing, and loyalty failures. Fr…
- attorney ethics violations — Ethics violations can support malpractice claims in California. Learn the difference between State Bar discipl…
- professional negligence attorney — California professional negligence lawyers for attorney malpractice—standard of care, causation, and damages. …
- law firm negligence — Sue a California law firm for negligence—calendaring failures, poor supervision, and firm-wide process breakdo…
- legal malpractice statute of limitations — California legal malpractice statute of limitations under CCP § 340.6—one-year discovery and four-year outer l…
- can I sue my lawyer — Can you sue your lawyer in California? Learn when attorney negligence supports a malpractice claim, deadlines,…
Practice-area malpractice (sample)
- employment law lawyer malpractice — California legal malpractice claims against employment law attorneys—missed deadlines, bad advice, and case-wi…
- personal injury lawyer malpractice — California legal malpractice claims against personal injury attorneys—missed deadlines, bad advice, and case-w…
- workers’ compensation lawyer malpractice — California legal malpractice claims against workers’ compensation attorneys—missed deadlines, bad advice, and …
- family law lawyer malpractice — California legal malpractice claims against family law attorneys—missed deadlines, bad advice, and case-within…
- divorce lawyer malpractice — California legal malpractice claims against divorce attorneys—missed deadlines, bad advice, and case-within-a-…
- probate lawyer malpractice — California legal malpractice claims against probate attorneys—missed deadlines, bad advice, and case-within-a-…
- estate planning lawyer malpractice — California legal malpractice claims against estate planning attorneys—missed deadlines, bad advice, and case-w…
- business law lawyer malpractice — California legal malpractice claims against business law attorneys—missed deadlines, bad advice, and case-with…
Full mistake and procedure indexes live on the Missed Deadlines and Procedure hubs. Browse all specialties on Malpractice by Practice Area.
Lawyers in
Legal Malpractice Case Evaluation
Complete this short intake so we can qualify your legal malpractice claim—underlying case, attorney error, damages, and timing—usually in 2–3 minutes.
