The Outer Bar That Runs Regardless of Discovery
A period of repose runs from the professional's own conduct or from completion of the work. Knowledge is irrelevant to it, tolling usually does not reach it, and a claim brought within the limitation period can still be extinguished by it.

The rule in short
A statute of repose fixes an absolute outer date measured from the defendant's conduct or from substantial completion of the work, without regard to when the harm was discovered. It differs from a limitation period in trigger, in the availability of tolling and, in many states, in character: repose is treated as extinguishing the right rather than barring the remedy. Consequences follow for tolling agreements, for relation back and for the choice of forum.
A claim can be timely under the limitation period and still be dead. Alongside the period that runs from discovery, most states impose a second and unforgiving deadline measured from the professional's own conduct or from completion of the work. It is usually called a period of repose. Knowledge plays no part in it. Diligence plays no part in it. On the date it expires the claim is gone, and in many states the right itself is treated as extinguished rather than merely unenforceable.
How repose differs from a limitation period
The two devices are often set out in the same sentence, which obscures how differently they behave. California's provision for claims against attorneys is a compact illustration: one year from discovery, or four years from the wrongful act, whichever occurs first. The one-year figure is a limitation period keyed to knowledge. The four-year figure is an outer bar keyed to conduct. They run simultaneously from different events, and the claim ends when either expires.
Three differences follow. The trigger is objective and documentary, so no inquiry into what the claimant knew is required. Tolling doctrines developed for limitation periods do not automatically apply, and statutes that permit tolling of the outer period say so expressly. And because repose is frequently characterized as substantive, it can be applied by a court in another state under conflict-of-laws principles, whereas limitation periods have traditionally been treated as procedural and governed by the forum.
That last point deserves emphasis because it defeats a familiar strategy. Filing in a state with a longer period does not necessarily escape a shorter outer bar in the state where the work was performed, since a forum applying another state's substantive law may apply that state's repose provision along with it. Several states have also enacted borrowing statutes that import the shorter of the two periods regardless of characterization.
What starts the outer period
The trigger varies by subject matter. Statutes aimed at professional services generally run from the wrongful act or omission. Statutes aimed at design and construction run from substantial completion of the improvement, from termination of the services, or from whichever of those is later. Washington uses the later of the two and defines substantial completion as the state of completion at which the improvement may be used or occupied for its intended use.
California divides its construction periods by the nature of the defect: four years for patent deficiencies, those a reasonable inspection would reveal, and ten years for latent ones. That structure recognizes the obvious point that an outer bar keyed to completion is harshest where nothing visible existed to prompt an inspection, and it responds by giving latent claims a longer runway rather than by opening the bar to tolling.
Fixing the trigger date is therefore an evidentiary exercise rather than a legal one. On a construction matter the candidates include the certificate of substantial completion, the date of occupancy, final acceptance by the owner, the last day work was performed and the date the professional's services agreement terminated. These can sit years apart on a project with phased handover, warranty work and a long punch list. On a services matter the candidates are narrower but no clearer, since the wrongful act may be a single filing, a course of advice given over months, or an omission with no date at all. Courts confronting an omission generally locate the act at the last moment the professional could have performed the missing task.
Parties investigating a dispute commonly sign a tolling agreement to avoid a protective filing. Where the outer period is characterized as substantive, several courts have held that the parties cannot contract around it, or that an agreement is effective only if the defendant expressly waived repose in terms. An agreement drafted to toll "the applicable statute of limitations" may leave the repose period running untouched, and the claim can expire while the negotiation continues.
| Feature | Limitation period | Period of repose |
|---|---|---|
| Trigger | Discovery, accrual or actual injury | The act, or substantial completion of the work |
| Effect of ignorance | Delays the start | None; the period runs regardless |
| Tolling | Available on established grounds | Rarely, and usually only where the statute says so |
| Character | Often procedural, barring the remedy | Often substantive, extinguishing the right |
| Relation back of amendments | Generally available | Frequently unavailable against a new defendant |
The exceptions that do exist
Repose is not entirely absolute. The most common carve-out is for fraud or willful concealment by the defendant, on the principle that a defendant should not benefit from a period that ran only because the facts were hidden. California reaches this result within its attorney statute by tolling the four-year outer limit where the professional willfully conceals the facts constituting the wrongful act. Other statutes exclude persons in actual possession and control of an improvement, or exempt claims sounding in warranty or contract from the construction period entirely.
A second category concerns minors and persons under disability. Some construction statutes preserve limited additional time for them; others do not, and constitutional challenges to that result have largely failed. A third concerns wrongful death and personal injury occurring near the end of the period, where some statutes permit a short additional window measured from the injury rather than from completion.
The concealment exception is narrower than claimants often assume. It generally requires an affirmative act of hiding, or silence where a duty to speak existed, and knowledge on the professional's part that the facts were being withheld. Failing to recognize an error is not concealment. Nor, in most formulations, is a general assurance that the work was properly done, absent knowledge to the contrary. Because the exception depends on the defendant's state of mind, it cannot usually be resolved on the pleadings, which is why a claimant who can plead it credibly gains at least the opportunity to take discovery on the point.
How this changes practice on both sides
For a claimant the discipline is simple to state and hard to apply. The outer date should be calculated first, from the earliest defensible trigger, and every subsequent step planned backward from it. Where the outer date is close, a protective filing is usually preferable to further investigation, since the screening statement required by the affidavit or certificate of merit may itself take weeks to obtain and several statutes permit filing before expert review precisely because of that squeeze.
For a defendant the outer bar is the cleanest available defense and is pleaded at the first opportunity. It requires no evidence about the claimant's knowledge, which means it can be established from project records and engagement files alone. Where it fails by a narrow margin, the analysis moves to when the limitation period starts to run, where the record on continuous representation and closing communications becomes decisive. Only if both defenses fail does the case reach the merits and the proof described in the standard a professional is held to.
Points to carry away
- Repose runs from conduct or completion, not from discovery, so a claim can expire before anyone could have found it.
- Discovery, continuous representation and disability tolling generally do not extend a period of repose.
- Several statutes carve out fraud or willful concealment, which is the main exception in practice.
- Because repose is often treated as substantive, it can travel with the claim in a choice-of-law analysis.
- A limitation period and a repose period run at the same time, and whichever expires first ends the claim.
Questions readers ask
Why do courts treat repose differently from a limitation period?
Because the two serve different purposes. A limitation period regulates diligence, encouraging claims to be brought promptly once they can be brought. A period of repose grants a defendant freedom from liability after a fixed time, whatever the claimant's diligence. Courts describing repose as substantive reason that it extinguishes the right rather than merely barring the remedy. That characterization drives the practical differences: tolling doctrines developed for limitation periods do not carry over, and the period may follow the claim across state lines.
Does an amended pleading relate back past a repose date?
Generally not against a new defendant. Relation back doctrines are designed to work with limitation periods, allowing an amendment to take the date of the original filing where the new party had notice and knew the action would have been brought against it. Where repose is treated as extinguishing the right, several courts hold that no amendment can revive what no longer exists. Amendments merely refining claims against a party already sued within the period fare better, though the analysis remains jurisdiction-specific.
What triggers the running where the work was performed in stages?
Statutes keyed to construction typically use substantial completion, defined as the state of completion at which the improvement may be used or occupied for its intended use. Statutes keyed to professional services often use termination of the services instead, and some use whichever is later. Phased work, punch lists, warranty repairs and later change orders all generate disputes about which date controls. Contract documents that fix a completion date and a certificate recording it are the most reliable evidence available.
Sources
- California Code of Civil Procedure § 340.6Caps the period at four years from the wrongful act, with tolling limited to enumerated grounds.
- California Code of Civil Procedure § 337.15Bars actions for latent deficiencies more than ten years after substantial completion.
- California Code of Civil Procedure § 337.1Sets a four-year outer period for patent deficiencies in design and construction.
- Washington Revised Code § 4.16.310Requires accrual within six years of substantial completion or termination of services, whichever is later.
- Minnesota Statutes § 541.051Sets the outer period for claims arising out of defective and unsafe conditions of improvements to real property.
- Minnesota Statutes § 541.05The general limitation period against which the outer bar operates in that state.
Pinnacle Law Review is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
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