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Ongoing Offences
Continuing Bylaw Breaching Conduct
Last Updated: July 04 2026
Question: Can a person in Ontario be repeatedly accused and charged for the same bylaw breach if the violation continues over time, even after an earlier charge has been laid?
Answer: ?
Answer: Denali Paralegal can help you understand how res judicata issue estoppel may not bar fresh charges for an ongoing bylaw violation in Ontario, where the breach is alleged to continue rather than occur at a single moment, because municipalities may treat each day or continuation of non-compliance as a practical continuation of the regulatory harm, while a stay or similar relief can still be relevant depending on the context and whether the prosecutions effectively re-litigate the same discrete event; if you are facing repeated municipal bylaw matters, a family law services provider paralegal at Denali Paralegal can help you triage your options and next steps, including gathering the right bylaw and enforcement details to support your response, so call (877) 414-4377 today for guidance.
Can a Person Be Repeatedly Accused of a Bylaw Breach?
Violation of Bylaw May Involve Continuous Conduct, Such as Allowing Improper Signage to Remain Displayed. When Continuous Bylaw Breach Occurs Repeated Charges May Result.
Understanding the Inapplicability of the Res Judicata Principle to Continuous Bylaw Violations As Ongoing Offences
Typically the law will disallow a person from being prosecuted twice for the same occurrence of misconduct. The principle, commonly termed double jeopardy, prevents a person from charged for the same misconduct repeatedly. Be that as it may, even though a person is protected from repeated prosecution for the same misconduct, in certain circumstances, where the misconduct is perpetual, repeated charges may arise.
The Law
The legal doctrine of res judicata, roughly translating to "things decided" in Latin, functions to prevent the recurrence of charges against an individual for a single infraction; but, the application of the res judicata doctrine is limited to a sole specific infraction like disregarding a red traffic signal while driving rather than encompassing an ongoing offence that could arise with a bylaw violation. The R. v. Nolis, 2012 ONCJ 446, case tackled the issue of the res judicata principle being predominately inapplicable to ongoing bylaw violations where it was stated:
[57] In Re EnerNorth Industries Inc., 96 O.R. (3d) 1, [2009] O.J. No. 2815, 2009 ONCA 536 (O.C.A.), R. A. Blair J.A., in delivering the judgment for the court, describes the doctrine of res judicata, starting at paragraph 53:
The doctrine of res judicata is a common law doctrine that prevents the re-litigation of issues already decided. It is founded on two central policy concerns: finality (it is in the interest of the public that an end be put to litigation); and fairness (no one should be twice vexed by the same cause). The doctrine is part of the general law of estoppel and is said to have two central branches, namely, "cause of action estoppel" and "issue estoppel."
Cause of action estoppel refers to the determination of the cause or causes of action before the court. The applicable form of res judicata in this case, however, is issue estoppel. Issue estoppel prevents a litigant from re-litigating an issue that has been clearly decided by a court of competent jurisdiction in a previous proceeding between the same parties or their privies even if the new litigation involves a different cause of action.
[58] In the matter before me, the applicable form of res judicata is issue estoppel. For issue estoppel to be successfully invoked, three conditions must be met: (1) the issue must be the same as the one decided in the prior decision; (2) the prior judicial decision must have been final; and (3) the parties to both proceedings must be the same, or their privies (Danyluk v. Ainsworth Technologies Inc., [2001] 2 S.C.R. 460, 2001 SCC 44, at para. 25, per Binnie J.).
As shown by the Nolis case above, the res judicata principle, often termed issue estoppel, pertains to a specific legal matter that was already resolved by the courts. As a consequence, debate over what legal issue was previously resolved by the courts occasionally arises. To put it simply, when a person commits a single offense, such as failing to come to a complete stop at a red traffic light while driving, the person may only face a charge for that action once; however, if the person repeats the offence at some other time, the person may face charges for committing the offence a second time. Despite the apparent logic, confusion can emerge when, instead of committing an offence anew, a person fails to cease the initial offence. An example would be allowing excessive noise to persist after facing an initial charge for a noise violation. The Dysart (Municipality) v. Reeve, 2000 CanLII 16841, case delved into the distinction between an ongoing bylaw violation and an offence taking place at a single moment in time, affirming that despite the res judicata doctrine, repeated charges could be applicable if an ongoing offence is occurring whereas in Dysart it was said:
[22] ... Multiple prosecutions of an accused or a defendant may well, at some point, justify a stay. See, for example, R. v. Jack (1997), 1997 CanLII 356 (SCC), 117 C.C.C. (3d) 43 (S.C.C.) and R. v. Mitchelson (1992), 1992 CanLII 4018 (MB CA), 71 C.C.C. (3d) 471 (Man. C.A.). But the context is important. These defendants were charged not with a Criminal Code offence, but with regulatory offences, with violating the municipality’s land use requirements. The offences are not alleged to have occurred at a discrete point in time but to be ongoing violations. The practical effect of a stay would be to give the defendants a legal non-conforming use by court order without the merits of their position ever having been adjudicated. Viewed in this way, it seems to me the community’s tolerance for successive prosecutions is greater than it might be in other kinds of cases. At least for now, the community’s interest in enforcing its land use requirements outweighs any unfairness in prosecuting the defendants again.
Summary Comment
In cases where a person fails to cease an ongoing bylaw breach or enables perpetuation of the bylaw breach, the person may be subjected to repeated charges for the violation.
NOTE: A large volume of inquiries featuring “lawyers near me” or “best lawyer in” frequently indicate a demand for prompt and skilled legal assistance rather than a particular designation. In Ontario, certified paralegals are governed by the same Law Society that regulates lawyers and have the authority to advocate for clients in specified litigation cases. Essential to this role are advocacy, legal assessment, and procedural expertise. Denali Paralegal provides legal representation within its licensed parameters, focusing on strategic positioning, evidence preparation, and compelling advocacy geared towards attaining effective and advantageous outcomes for clients.