Notice and time bars in Alberta

The first question on any Alberta delay claim is not which form governs. It is which Act. Private and municipal work runs on the Prompt Payment and Construction Lien Act, RSA 2000, c P-26.4, the renamed Builders' Lien Act, RSA 2000, c B-7, the chapter letter having changed only on 29 August 2022, with liens, a trust, and adjudication in which delay is adjudicable by consent under the s 19 catch-all and there is no monetary cap. Provincial Crown public works run on the Public Works Act, RSA 2000, c P-46, where there are no liens against provincial or federal Crown land, no trust of the Crown's money, and, since s 14.3(2) came into force on 1 April 2025 under Bill 30 (2024), no adjudication of delay. PPCLA s 1.1 excludes public works as defined in the Public Works Act and agreements with the provincial Crown or a Crown agent, so the two regimes do not overlap.

That split decides what a notice failure costs. On private work a missed contractual notice leaves the lien and the adjudication route intact. On a provincial public work a missed s 14(3) notice leaves nothing but a contract claim against the party above and the labour and material payment bond if there is one. This page sits under the Alberta place hub, which carries the two Acts and the citation eras. The pan-Canadian notice doctrine that Alberta borrows lives at the Canada notice and time bars page and is summarised rather than restated below.

Public Works Act s 14(3): registered mail, 45 days, and no substantial compliance

On an Alberta provincial Crown public work, Public Works Act, RSA 2000, c P-46, s 14(3) requires a claimant to send notice by registered mail within 45 days of last providing work or materials, specifying the nature and amount of the claim. Strict compliance is mandatory. Invoices delivered during the job are not substantial compliance, and there is no lien and no adjudication of delay to fall back on. This is a public-works rule only. It has no application to private or municipal work.

Graham Construction and Engineering Inc v Alberta (Infrastructure), 2021 ABQB 184 is the authority, and the facts carry the point better than the ratio does. A Grande Prairie project was terminated by the Ministry in September 2018, more than $60M of claims were advanced, and roughly half of that was paid into court. The outcome divided on paperwork.

Two further sections of the same Act set the mechanics around that notice. s 15(1) permits the Crown to pay a claimant the amount the Crown considers proper and deduct it from the contractor, s 15(4) permits the Crown to pay money into court instead. The reach of money paid in under s 15(4) was decided in Alberta Social Housing Corporation v Dawson Wallace Construction Ltd, 2025 ABKB 124: sub-subcontractors have no entitlement to those funds, and only the contractor, its assignees, or those claiming through the contractor may reach them. The Court emphasised that the Public Works Act does not establish rights against the Crown in the way the Builders' Lien Act does against an owner. It is a priority-ordering administrative process, not a source of substantive entitlement.

The composite Alberta public-works rule is therefore blunt, and it is worth stating in terms a practitioner arriving from Ontario or England will not expect. A delay or prolongation claimant below first tier on an Alberta provincial job has no lien, no trust of the Crown's money, no substantive Public Works Act right, and no adjudication on time. What it has is the contract claim against the party above it and the labour and material payment bond if one exists, Crown contracts over $100,000 are likely bonded, though the corpus records that last point as single-source. The adjudication carve-out itself is set out on the Alberta prompt payment and adjudication page, the short version is that Public Works Act s 14.3(2) excludes 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 is excluded by name, and nothing like it exists elsewhere in Canada.

CCDC 2 – 2020: GC 6.5.4 is 10 Working Days from commencement, and GC 6.6.1 is a separate notice for money

On private and municipal Alberta work using CCDC 2 – 2020, GC 6.5.4 bars any extension for delay unless Notice in Writing of the cause of delay reaches the Consultant not later than 10 Working Days after the commencement of the delay, with one notice sufficing for a continuing cause. GC 6.6.1 is a separate obligation, requiring a timely claim for money, with no fixed period stated. Time and money are two notices, not one.

The trigger is harsher than the day count suggests, and this is a pan-Canadian feature of the form rather than an Alberta gloss on it. The clock runs from commencement of the delay, not from awareness of it, unlike FIDIC's "aware or should have become aware", JCT's "reasonably apparent" or NEC4's "aware of the event", so a contractor can be time-barred before it knew there was anything to notify. Working Days is a defined term excluding Saturdays, Sundays and holidays, which stretches the calendar window to roughly two weeks, and that sounds generous only until the first point is applied to it. GC 6.5.5 adds a distinct mechanic: where the Consultant fails to furnish instructions and no schedule was made under paragraph 2.2.12 of GC 2.2, no request for extension may be made until 10 Working Days after demand for instructions.

What that costs when it is missed is best shown by Elite Construction Inc v Canada (Attorney General), 2021 ONSC 562, where a CAD 4.1M delay and extras claim was dismissed on summary judgment for failure to give written notice within 10 working days of the neglect or delay, and the Court of Appeal reaffirmed that notice compliance is a condition precedent to maintaining a claim in the courts. That is Ontario authority. The corpus records the Court of Appeal neutral citation as unverified, and it is imported into Alberta reasoning because, as the next-but-one section explains, Alberta's own appellate position on condition precedent is unresolved.

The ACA supplementary conditions to CCDC 2 – 2020: whether they touch GC 6.5 is unverified, and that is the top Alberta gap

Before relying on the 10 Working Days in GC 6.5.4 on an Alberta project, read the supplementary conditions, and be aware that on the standard Alberta package nobody has published what they do. Whether ACA SC CCDC2 – 2020 amends GC 6.5 (Delays) at all is recorded in the corpus as UNVERIFIED, and it is the top Alberta verification gap. This page states that rather than assuming either way.

The Alberta Construction Association publishes a standard Alberta supplementary- conditions package for CCDC 2, described as supplementary conditions for use between Owner and Prime in Alberta with CCDC 2 to align with the requirements of the Alberta lien legislation, revised for the 2020 edition and labelled ACA SC CCDC2 – 2020. The Association maintains a whole free suite of these across CCDC 2-2020, 2MA-2023, 4-2023, 5A-2025, 5B-2025, 14-2026, 17-2025, 18-2023 and 32-2026. What could not be established is the substance: the file is a.docx and the site was unreachable, and the Association's 2021 Advisory summary discusses Ready-for-Takeover prerequisites and GC 5.4.5 holdback release while being silent on GC 6.5. Silence in a summary is weak evidence that delay is not the package's focus. It is not a finding, and it should not be published as one.

That matters because the general Canadian rule cuts the other way. Supplementary conditions almost universally amend GC 6.5, and amendments usually tighten rather than loosen the notice regime. The one industry package that verifiably does not is Ontario's: the OAA/OGCA Recommended Supplementary Conditions for CCDC 2 – 2020 contain no supplementary condition amending GC 6.5, which the corpus records as a verified negative finding. Alberta has no equivalent answer. So on an Alberta CCDC 2 – 2020 job the default assumption should be that GC 6.5 has been amended by something, and the only safe course is to read the actual package attached to the actual contract.

Two related negatives round the picture out, and both are recorded findings rather than gaps in searching. No Consulting Engineers of Alberta or ACEC-Alberta recommended supplementary conditions to CCDC 2 were located, and no City of Edmonton general conditions were located in any publicly indexed form. On an Edmonton municipal job there is no published general-conditions baseline to compare the owner's document against.

Dilcon, 2000 ABCA 223: a conflicted authority, and the negative finding it produces

Alberta's only appellate notice authority is contested. Dilcon Construction Ltd v ANC Developments Inc, 2000 ABCA 223 is carried in the corpus for strict notice, Alberta enforces contractual notice strictly and failure bars the delay claim, but the corpus records a CONFLICT: a substantial source attributes to the same judgment an implied term that the owner will give the contractor "uninterrupted possession" of the site, indexed under disruption and possession rather than notice. Both may be true of the same judgment.

The two readings are not equivalent in value. An implied term of uninterrupted possession is a prevention-principle-adjacent Alberta appellate holding, and it is a considerably stronger extension-of-time tool than a notice rule, it goes to the owner's own conduct rather than to the contractor's paperwork, and it connects to the prevention principle and time at large line rather than to the notice line. Do not assert the notice proposition as the case's holding until the text is read.

The negative finding that follows should be stated flat. No Alberta appellate authority beyond 2000 ABCA 223 was located treating a contractual notice-of-claim clause as a condition precedent. And that case may in fact be a possession case. So Alberta may have no appellate condition-precedent authority at all. Canadian commentary on the point is carried by Ontario authority, principally Ross-Clair v Canada (Attorney General), 2016 ONCA 205, which Alberta firms cite as if it applied in Alberta.

There is a citation trap sitting on top of the substantive conflict. The corpus records a CONFLICT on the styling as well as on the holding: the corpus and one source style the case ANC Developments Inc v Dilcon Construction Ltd, and another source reverses the party order to Dilcon Construction Ltd v ANC Developments Inc. The neutral citation 2000 ABCA 223 is agreed across sources, so cite the neutral citation, give both party orders if the search has to be reproducible, and check the styling before filing anything.

Tempo v Man-Shield: in Alberta the notice trap catches the party setting off

The strongest Alberta contractual-notice authority runs against the party withholding money, not against the claimant. In Tempo Alberta Electrical Contractors Co Ltd v Man-Shield Construction Inc, 2023 ABKB 44, an electrical subcontractor obtained partial summary judgment of $678,261 on a 2014 residential condominium project that had experienced significant delays, and the general contractor's delay and staffing backcharge failed for want of written notice and an opportunity to cure.

The general contractor had withheld progress payments, holdback and change orders, asserting chargebacks for temporary power, insufficient staffing and deficiencies. That is the standard shape of a delay set-off on a delayed project. It failed on the notice point, and the Court held that the set-off claims did not constitute a genuine defence barring summary judgment. Delay damages themselves were expressly carved out of the summary judgment and reserved for trial, so the case decides the notice question and not the underlying delay entitlement.

In Alberta the notice trap catches the party setting off as readily as the party claiming. A delay defence needs the same evidentiary build as a delay claim, and if it is a backcharge, it needs written notice of the alleged deficiency and an opportunity to cure.

A.G. Clark Holdings Ltd v 1352986 Alberta Ltd, 2023 ABKB 219 points the same way on the evidence rather than on the notice. An owner withheld $475,350.80 alleging delays and poor quality. The lien was declared valid for the full outstanding amount plus GST, interest and costs, the owner's affidavit lacking documentary support to displace the project manager's detailed evidence. The corpus records that decision as single-source. Read together, the two cases support a proposition worth publishing: an owner or general contractor who pleads "delay and poor quality" as a bare assertion against a documented payment or lien claim loses on the record. Both are private-work decisions. The lien in A.G. Clark is a PPCLA lien, which would not have existed on provincial Crown land.

The public and municipal forms: Infrastructure, Transportation and Calgary

Alberta's public and municipal forms carry three notice regimes that behave nothing like CCDC 2 – 2020, and on provincial work they are the only route to time relief because delay is not adjudicable there. The Alberta Infrastructure Construction Management Agreement filters relief through hard de-minimis thresholds, Alberta Transportation Edition 16 has no extractable notice day count at all, and the City of Calgary imposes a 14-day threshold and an "immediately" obligation.

Layer: form-default. The CCDC 2 – 2020 and Public Works Act rows rest on two independent secondary sources, the Alberta Infrastructure CM Agreement, Alberta Transportation Ed 16 and City of Calgary GC v2.0 rows are recorded in the corpus as single-source. No form text and no judgment was read in original form.

Three of those rows deserve more than a table cell. The Alberta Infrastructure CM Agreement's Schedule 19 Relief Event regime covers province-retained risks, unknown contamination, Province-caused delay, mandatory changes in law, unforeseeable public-authority orders, acts of other Province contractors and unnecessary Province-initiated work stoppages. But relief is available only above 10 Business Days of time impact and $10,000 of cost, and only if the notice, mitigation and record-keeping procedure is followed. Sub-threshold Province-caused disruption is uncompensable, which pushes a construction manager toward cumulative-impact framing and straight into the usual global-claim objections.

Alberta Transportation Edition 16 is the sharper problem for a claimant. s 1.2.39 provides for adjustment of completion dates for force majeure events, differing site conditions and Department-caused delays, and s 1.2.43 is an express Seasonal or Prolonged Shutdown provision. But no notice-of-claim day count was extractable from the specification, and s 1.2.57 refers claims and dispute resolution out to the Dispute Resolution Process for Government of Alberta Construction Contracts, Edition 1, 1997. Do not assume a notice period exists and do not assume there is none. Serve early, in writing, and treat the 1997 reference as likely stale.

City of Calgary Standard General Conditions v2.0 carry the sharpest single municipal extension-of-time rule found in Alberta. Art 6.2(5) provides that a request arising from delay by the City's Design Professional will not be considered unless the delay is more than 14 Days, which defeats the classic accumulation of many short design-response delays, a contractor facing forty three-day RFI turnarounds has, on the face of the clause, no extension at all. Art 7.2 is the mirror trap: the obligation to provide Notice immediately runs from awareness that the Scheduled Operational Date will be missed, not from the delay event. Calgary work is municipal, so the PPCLA applies and liens and adjudication remain available. The 14-day threshold is a contractual filter on entitlement, not a statutory bar.

Waiver, estoppel, and the pan-Canadian authorities Alberta borrows

Because Alberta's own appellate position is unresolved, Alberta notice arguments are run on pan-Canadian authority, and that authority is strict. A notice provision can bar a claim without express failing-which language, the owner need not prove prejudice, and informal complaint does not count as notice. The recognised exceptions, actual knowledge, waiver, and rights independently preserved under the applicable construction statute, are all fact-heavy, and none of them is reliable.

The four cases that do the work are set out in full on the Canada notice and time bars page and are not restated at length here. In outline: Corpex (1977) Inc v The Queen in right of Canada, 1982 CanLII 213 (SCC) establishes that a notice provision can bar a claim even without express failing-which language, Technicore Underground Inc v Toronto (City), 2012 ONCA 597 requires strict compliance and holds that the owner need not prove prejudice, Northland Kaska Corp v R, 2001 BCSC 929 supplies the line that the grumblings of a contractor are not sufficient to constitute notice, and Colautti Construction Ltd v Ottawa (City), 1984 CanLII 1969 (ONCA) is the main exception, waiver by conduct where the owner repeatedly paid for unauthorised extras. Ross-Clair, 2016 ONCA 205 adds strict claim content to strict timing, insufficient information within the contractual window is a failure to give notice of the claim at all.

Two practical points follow for an Alberta file. First, waiver by conduct on the Colautti model is a course-of-dealing argument, so it needs a documented pattern of the owner paying or processing claims outside the contractual machinery, built contemporaneously rather than assembled afterwards. Second, none of this touches the Public Works Act s 14(3) notice. That is a statutory requirement on a provincial Crown public work, held to require strict compliance in Graham, 2021 ABQB 184, and the contractual waiver and estoppel routes have no obvious purchase against it. The Ontario comparison is instructive here in both directions: Ontario supplies the authority Alberta lacks, and Ontario's supplementary-conditions position is settled where Alberta's is not, see the Ontario extension-of-time hub.

Ready-for-Takeover is not the Certificate of Substantial Performance

CCDC 2 – 2020 replaces Substantial Performance with Ready-for-Takeover at GC 12.1, with eight prerequisites. The Alberta PPCLA s 22 trust and the major and minor lien fund split both hinge on the Certificate of Substantial Performance instead. The two milestones are not the same event, and a delay that pushes a project past one but not the other opens a real gap in the payment-security chain on private and municipal work.

That gap is why the Alberta supplementary-conditions question is not merely academic. Any Alberta supplementary-conditions package has to reconcile a form built around Ready-for-Takeover with a statute built around the Certificate of Substantial Performance, and the ACA package is framed principally around exactly that lien-legislation alignment. Whether it also touched GC 6.5 in the process is the point that could not be established.

One further CCDC 2 – 2020 mechanic bears on notice timing and is easy to miss. For stop orders by a court or public authority, an extension is available only where the contractor cannot achieve Ready-for-Takeover by the stipulated date. The relief is keyed to the outcome milestone rather than to the stoppage itself, which means the assessment of whether there is any entitlement to notify about can lag the event that started the notice clock running. On an Alberta private or municipal project the answer to that tension is procedural rather than doctrinal: serve the GC 6.5.4 notice within 10 Working Days of commencement of the delay and argue entitlement later, and diarise the money notice under GC 6.6.1 separately, because the two are not the same obligation and satisfying one does not satisfy the other. The full set of Alberta clocks that run alongside these: adjudication, lien, holdback, limitation and prosecution of the action itself, is set out on the Alberta delay claim clocks page.

Sobre este material El contenido de la biblioteca es información general sobre la práctica de las reclamaciones de construcción, no asesoramiento jurídico. El derecho a reclamar, los plazos y el procedimiento se rigen por su propio contrato y por el derecho del lugar donde se ejecuta la obra. Revisado el 9 de agosto de 2026 · Informar de una corrección