Limitation periods and claim accrual in Alberta

Three things make the Alberta position distinctive rather than merely another two-year regime. The third limb of the discovery test, that the injury "warrants bringing a proceeding", gives a claimant whose loss accumulates over months a real argument about when time started. The ten-year backstop runs from a discrete first breach rather than a rolling course of conduct, which cuts against exactly the cumulative-impact pleading a long delay claim invites. And s 7(2) makes a shortening clause invalid, which is the opposite of the Ontario rule and matters the moment an owner's supplementary conditions arrive.

This page sits under the Alberta place hub, which carries the two Acts, the citation eras and the Alberta authority map. Every citation, section number and figure below rests on secondary sources: no Canadian judgment and no consolidated Alberta statutory text was read in original form for this corpus.

Two years from discovery, ten years from the claim arising, whichever expires first

The Limitations Act, RSA 2000, c L-12, s 3(1) sets one basic period and one backstop, and the shorter of the two governs. Two years runs from a three-limb discovery test, ten years runs from when the claim arose. The consequence of missing either is unusual and worth stating precisely: the defendant becomes entitled to immunity from liability, not merely a procedural bar. And the defence has to be pleaded to have any effect at all.

The corpus reproduces s 3(1) of the Limitations Act as follows, from secondary sources rather than the consolidated statute:

"Subject to section 11, if a claimant does not seek a remedial order within (a) 2 years after the date on which the claimant first knew, or in the circumstances ought to have known, (i) that the injury for which the claimant seeks a remedial order had occurred, (ii) that the injury was attributable to conduct of the defendant, and (iii) that the injury, assuming liability on the part of the defendant, warrants bringing a proceeding, or (b) 10 years after the claim arose, whichever period expires first, the defendant, on pleading this Act as a defence, is entitled to immunity from liability in respect of the claim."

Note that Alberta's basic test has three knowledge limbs. Ontario's has four, because the Limitations Act, 2002 adds a separate "appropriate means" enquiry at s 5. A practitioner arriving from Ontario who counts four limbs in Alberta is importing a limb that is not there, and the difference is not cosmetic, it is the limb that has carried the postponement arguments in Ontario.

When does an Alberta delay claim accrue?

On the general s 3(1) test, and nothing more specific. Alberta has no construction- specific accrual rule. The two-year clock starts when the claimant reasonably knew of the injury, its attribution to the defendant and that it warranted a proceeding, and on a delay claim whose loss builds over months, the third limb is where the argument sits, because a day of disruption is not yet an injury that warrants suing anyone.

Discoverability applies to breach of contract in Alberta, confirmed in Weir-Jones Technical Services Incorporated v Purolator Courier Ltd 2019 ABCA 49, which is a commercial courier dispute, not a construction case, and which is also the Alberta summary-judgment authority. The discoverability standard is objective, with constructive knowledge through reasonable diligence, the corpus carrying Yugraneft Corp v Rexx Management Corp 2010 SCC 1, an Alberta appeal, for that proposition, and recording the precise neutral citation as UNVERIFIED. Certainty is not the threshold: Hill v South Alberta Land Registration District (1993, Alta CA) puts it as "very few people who sue have perfect certainty", and the corpus records no neutral citation for that decision. At the other end, De Shazo v Nations Energy Co 2005 ABCA 241, citation also UNVERIFIED in the corpus, holds that mere suspicion or speculation does not trigger the period, though being put on enquiry does. The corpus also records UNVERIFIED that the Alberta Court of Appeal has adopted a "plausible inference" approach to discoverability, and does not capture the case name.

The best available argument for a contractor is therefore s 3(1)(a)(iii). Time does not run from the first day of disruption but from the point at which the accumulated impact justifies suit. That is a reading of the statutory limb rather than a holding any Alberta court has stated in those terms, and it should be pleaded as such.

Take the ordinary shape of such a claim. A mechanical subcontractor is disrupted by late structural handovers from March onwards. Each month it loses some productivity, and none of it is individually worth an action. By January of the following year the cumulative loss is material and the general contractor has refused it in writing. On the s 3(1) analysis the injury "occurred" progressively and was "attributable" to identified conduct throughout, but the claimant's case is that it did not "warrant bringing a proceeding" until the accumulated impact was known and refused. The risk is that a court fixes an earlier date, which is why the accumulating loss has to be quantified contemporaneously rather than reconstructed later. That illustration is constructed, not drawn from an Alberta judgment.

There is no shortcut available. The corpus records flatly that no Alberta equivalent of Ontario's invoice-and-default discoverability rule for construction claims was located, Ontario has 1838120 Ontario Inc v Township of East Zorra-Tavistock 2021 ONSC 3341 and its three-limb accrual test, Alberta runs on the general test as applied in Weir-Jones.

Does negotiation or a contractual dispute-resolution ladder postpone anything?

On the located material, no. Nothing in the Alberta corpus supports postponing the two-year period because the parties were negotiating, because a contract required mediation first, or because a dispute-resolution ladder had not been exhausted. The only device the Limitations Act itself supplies is s 7(1), a written extension and a claimant who wants time should ask for one rather than assume the process bought it.

The reason the argument does not travel is textual. Ontario's s 5(1)(a)(iv) asks whether "a proceeding would be an appropriate means to seek to remedy" the injury, and that limb has carried the mandatory-ADR postponement argument in PQ Licensing SA v LPQ Central Canada Inc 2018 ONCA 331. Alberta's s 3(1)(a)(iii) asks whether the injury "warrants bringing a proceeding". The two are functionally similar and textually different, and no Alberta equivalent of the Ontario postponement line was located. Carry that difference rather than eliding it.

What s 7(1) requires is an agreement to extend supported by a written acknowledgment from the party adversely affected. In practice, a standstill signed by the party who would otherwise get the benefit of the expiry. It is available, it is enforceable, and it is the only reliable way to keep a negotiation alive past the two-year mark. Section 7 does not, however, reach any of the other Alberta clocks: it extends limitation periods, not notice conditions, lien periods or adjudication windows.

The ten-year backstop runs from the first actionable breach, not a continuing breach

The ultimate period runs from a discrete, identifiable first breach that caused loss. It does not roll forward because the same conduct continued. That is the effect the corpus records for Living Waters v UFA 2025 ABKB 319, recorded as SINGLE-SOURCE and expressly UNVERIFIED, and the label should be carried in print rather than dropped, which rejects continuing-conduct theories absent separate independent breaches.

For a delay claim on a long-running Alberta project this is a drafting-of-the-pleading problem, not an academic one. A "continuing breach" theory of prolongation will not extend the ten-year backstop. The claimant has to identify a first actionable breach, and that requirement cuts directly against global and cumulative-impact pleading which has nowhere to go in Canada in any event, there being no Canadian global-claims framework and no Canadian judgment using the phrase. The pan-Canadian position on what prolongation can and cannot be pleaded as sits at prolongation and delay costs.

One citation-hygiene point, because this is where it bites. Living Waters is a 2025 decision of the Court of King's Bench, cited ABKB. The Court of Queen's Bench of Alberta became the Court of King's Bench on 8 September 2022, mid-year, not at the year boundary, so Alberta 2022 carries both 2022 ABQB nnn to 7 September and 2022 ABKB nnn from 8 September, and an ABQB citation dated 2023 or later is almost certainly a transcription error. Do not propagate it.

s 7(1)–(2): extension by written agreement only, and a shortening clause is invalid

An Alberta limitation period can be lengthened by agreement and cannot be shortened. s 7(1) permits extension with a written acknowledgment from the party adversely affected. s 7(2) makes a clause reducing a limitation period invalid. This is the sharpest divergence in Canadian construction law on this subject, because it decides whether an owner's supplementary conditions can lawfully bar a delay claim early, and the answer changes at the provincial border.

Layer: jurisdictional. All three rows rest on secondary sources, no consolidated statutory text was read in original form. The corpus records the position in Saskatchewan and Manitoba as extension-only, British Columbia as statutorily silent, and the Atlantic provinces and territories as unknown, do not assume the Ontario rule anywhere it has not been checked.

The operative consequence is one clause behaving three different ways.

The one-year bar in the owner's supplementary conditions. An owner's supplementary condition provides that no claim for delay may be brought more than one year after substantial performance. In Ontario that clause can bind, because the Limitations Act, 2002 s 22(5)–(6) lets commercial parties to a business agreement shorten or exclude a limitation period, though the drafting still has to do the work: in Ontario (Transportation) v J & P Leveque Bros Haulage Ltd 2025 ONCA 573 the Court of Appeal reversed a finding that a Ministry contract had validly substituted its own period, because the clause did not clearly describe the limitation period, identify its scope and exclude the statutory periods. In Alberta the identical clause is a nullity under s 7(2), whatever its drafting. In Quebec it is also a nullity, for an unrelated reason art 2884 C.c.Q. prohibits any conventional prescription period at all. One clause, three provinces of the same federation, three answers.

Two practical directions follow. If you are drafting for an Alberta project, do not put a shortened limitation clause in the contract. It will not survive s 7(2), and its presence may give a counterparty a false sense of a deadline that does not exist. If you are a claimant reading an Alberta contract that contains one, do not treat it as a deadline, but check whether the same clause is also framed as a contractual notice condition, because a notice condition is a different animal and may well bind. The full jurisdictional picture is set out at Ontario limitation periods and in the comparison of delay regimes by province.

Lafarge: limitation periods apply to arbitrations, and issuing in court may not stop time

Limitation periods apply to arbitrations in Alberta, and filing a lawsuit does not stop time running for an arbitration. That is the holding the corpus records for Lafarge Canada Inc v Edmonton (City) 2013 ABCA 376, and it is the most under-appreciated procedural trap on this page. A claimant who issues a statement of claim on the eve of the two-year date, intending to "protect the limitation", may have protected nothing at all if the contract commits the dispute to arbitration.

That is not a hypothetical configuration on Alberta building work. On a CCDC 2 – 2020 project running the CCDC 40 arbitration route, the delay dispute is contractually bound for arbitration, and the same contract's GC 6.5.4 has already imposed a 10 Working Day notice for time and GC 6.6.1 a "timely" claim for money. The court action is not the proceeding the limitation period is measuring.

What a claimant does about it, in order:

1. Commence the arbitration itself within the limitation period, serve the notice to arbitrate, or whatever the arbitration agreement identifies as the commencing step, and diarise that as the real deadline rather than the filing date of a claim.
2. Get a written s 7(1) extension if the arbitration cannot sensibly be commenced in time, with the written acknowledgment the section requires from the party adversely affected. It is the only mechanism the Limitations Act gives.
3. Read the arbitration clause before assuming a court action is available at all including whether it is mandatory, what triggers it, and what the contract requires before a party may refer.
4. Do not rely on a protective court filing standing in for the arbitration. If both are genuinely needed, do both, do not substitute one for the other.

The stakes are higher in Alberta than the same trap would carry elsewhere, because an Alberta arbitral finding on delay is effectively final. In Quanta Canada Holdings II ULC v Bremar Construction Ltd 2024 ABKB 317, a Calgary duct bank, a CCA 1-2008 subcontract and a delay-and-defects claim of $8,137,116, permission to appeal was refused because delay causation is mixed fact and law, so no question of law arises under Arbitration Act s 44(2). The corpus records no Alberta decision from 2020 to 2026 setting aside or varying an arbitral award on a construction delay finding, and every located Alberta construction-arbitration decision in the window is pro-finality. Arbitrating an Alberta delay dispute is choosing finality on the schedule findings, so the forum question and the limitation question have to be answered together, and answered early.

Three clocks that are not limitation periods. And s 7 does not reach any of them

The Limitations Act is one of several Alberta clocks that can end a delay claim, and it is the only one s 7 touches. The other three are different creatures in law: a statutory precondition to a statutory remedy, statutory conditions of a security right, and a statutory condition precedent to the claim itself. None of them saves any of the others, and an extension agreement under s 7(1) does not extend any of them.

Layer: jurisdictional for the statutory rows, form-default for the contractual row. Every row rests on secondary sources. No consolidated Alberta statutory text was read in original form.

On the public side, the Public Works Act, RSA 2000, c P-46 s 14(3) is the clock that matters, and it is enforced without sympathy: Graham Construction and Engineering Inc v Alberta (Infrastructure) 2021 ABQB 184 saw 17 claimants who used the statutory form paid and 32, including Graham, shut out. And on provincial public works there is no adjudication route to fall back on for a delay claim at all: PWA s 14.3(2), introduced by Bill 30 (2024) and in force 1 April 2025, excludes from adjudication changes or delays to a construction schedule, completion or milestone dates, and disputes over the interpretation of relief events, designated changes in law, remedial actions and force majeure events. Every category an extension-of-time claim lives in, by name. Nothing like it exists elsewhere in Canada.

On the private and municipal side, the lien and adjudication clocks run under the Prompt Payment and Construction Lien Act, RSA 2000, c P-26.4 from 29 August 2022, when Bill 37 renamed the Builders' Lien Act, RSA 2000, c B-7, and changed the chapter letter. That matters for research as much as for pleading: every Alberta lien and delay authority decided before 29 August 2022 cites c B-7, and a search indexed only on P-26.4 silently drops most of the useful material. Bill 30 (2024). The Service Alberta Statutes Amendment Act, 2024, in force 1 April 2025, is a different instrument from Bill 30 (2026), the Expedited 120-Day Approvals Act, whose status the corpus records as UNVERIFIED. Always give the year. All six Alberta clocks in one place are at Alberta delay claim clocks.

Surviving the Limitations Act is not sufficient, rr 4.31 and 4.33

Alberta's dismissal-for-delay regime kills construction claims that were filed in time but prosecuted slowly. Rule 4.31 allows dismissal for inordinate and inexcusable delay plus prejudice, discretionary, with prejudice presumed on long delay. Rule 4.33 is the "drop dead" rule: dismissal where three or more years pass without a significant advance in the action, mandatory once triggered. Neither is a limitation period, and neither can be contracted around.

The authority to know is Peters v Countryside Masonry Inc 2025 ABKB 713, in which a $4M residential construction claim was struck for inordinate delay. The stone cladding and fireplace work was completed in summer 2007, the action was not commenced until February 2016, the defendant applied to dismiss in January 2024. Devlin J rejected the argument that construction disputes are inherently complex, this was "a fairly straightforward residential construction dispute", and emphasised presumed prejudice where a key witness is seriously ill and elderly.

The idea that a seriously ill man of advancing age could reliably defend himself through the recall of conversations about building variations that occurred up to a quarter century ago is risible.

Two features of the Alberta environment make this worse than it would be elsewhere. The province has no specialist construction list, no construction judges and no construction practice note (the Commercial List is insolvency-only) so there is no case-managed track pulling a heavy delay file along. And the three-year drop-dead period runs on significant advance, which document production alone may not supply on a claim where production is the activity that consumes the years. Every Alberta extension-of-time file therefore needs a litigation-pace plan, not just a notice plan.

The order of operations that follows is unglamorous and rarely done. Fix the discovery date and the first actionable breach at the outset, while the people who can speak to them are still employed and still well. Commence in the right forum. Keep the statutory clocks on their own diary because none of them rescues another. Then run the action at a pace a court will accept, because in Alberta the claim you filed in time is still a claim you can lose for taking too long to prosecute. And the detail of how that forum behaves, from the single-expert rule to the finality of arbitral schedule findings, sits at arbitration and forum in Alberta.

À propos de ce contenu Le contenu de la bibliothèque est une information générale sur la pratique des réclamations de construction, et non un avis juridique. Le droit à réclamation, les délais et la procédure sont régis par votre propre contrat et par le droit du lieu où les travaux sont exécutés. Révisé le 9 août 2026 · Signaler une correction