Tree Bylaws & Permits in Ottawa: What Homeowners Must Know

Trees are an essential part of Ottawa’s urban landscape. They provide shade, improve air quality, enhance property value, and create a vibrant ecosystem. But for homeowners looking to remove, prune, or alter trees on their property, it’s not as simple as picking up a chainsaw. Ottawa has strict tree bylaws in place to protect its urban forest, and failing to follow them can result in hefty fines. Understanding these rules is crucial for property owners to ensure compliance while maintaining the health and beauty of their trees.

Whether you’re a new homeowner, planning landscaping work, or managing a property with mature trees, knowing the ins and outs of tree permits and regulations in Ottawa is key to avoiding legal issues and safeguarding the environment. In this guide, we break down what homeowners must know, from permit requirements to exemptions, penalties, and best practices.

What is Ottawa’s Tree Protection By-law?

Ottawa’s Tree Protection By-law No. 2020-340 is a municipal regulation designed to preserve and manage the city’s urban forest. It establishes rules for the removal, pruning, and injury of trees on private and public properties, with a focus on protecting mature and significant trees. Under this by-law, many trees, particularly those with a diameter of 30 cm or more, cannot be removed without a formal permit. The by-law ensures that homeowners, developers, and contractors consider the environmental, aesthetic, and ecological value of trees before undertaking any activity that could compromise their health or stability.

The by-law also outlines penalties and enforcement measures for violations, including substantial fines and potential restoration orders to replace illegally removed trees. It applies to trees on private lots, municipal lands, and public rights-of-way, requiring coordination with certified arborists for accurate assessment. Additionally, the regulation encourages sustainable urban planning by promoting tree retention during development and providing guidelines for tree replacement when removal is unavoidable. By understanding and complying with this by-law, Ottawa residents can protect their property, enhance neighborhood greenery, and contribute to the city’s long-term environmental goals.

How to Apply for a Tree Permit in Ottawa?

Applying for a tree permit in Ottawa involves a structured process to ensure compliance with the Tree Protection By-law and to safeguard the city’s urban forest. Homeowners must first determine whether their tree qualifies as protected, typically based on size, species, and location. The next step is to complete the official permit application, providing detailed information about the tree, such as its diameter, health condition, and the reason for removal or pruning, along with supporting documents like photographs or arborist reports.

Once the application is submitted, the city reviews it to assess potential impacts on the tree and the surrounding environment. If approved, the permit specifies conditions for removal, pruning, or replacement, ensuring responsible management of the urban canopy. Homeowners are encouraged to consult a certified arborist throughout the process to guarantee proper evaluation, adherence to regulations, and protection of both their property and Ottawa’s green infrastructure.

City of Ottawa Tree Removal Bylaw

The City of Ottawa Tree Removal Bylaw protects the urban forest by regulating the removal, pruning, or injury of trees on private and public property. It ensures that tree removal is responsible, minimizes environmental impact, and maintains the city’s greenery. Homeowners must obtain a permit for most mature trees to comply with the law and avoid penalties.

  • Permit Required: Trees 30 cm or larger in diameter generally need a removal permit.
  • Exemptions: Dead, hazardous, diseased, or small trees may not require a permit.
  • Replacement: Some removals require replanting or paying into the city’s tree fund.
  • Fines: Unauthorized removal can lead to fines up to $100,000.
  • Heritage Trees: Special protections apply to historically or ecologically significant trees.

This bylaw helps Ottawa homeowners manage trees safely while preserving the city’s urban canopy.

Best Tree Bylaws & Permits in Ottawa

Ottawa has implemented some of the most comprehensive tree protection regulations in Canada, designed to preserve the city’s urban forest while balancing homeowner rights. These bylaws ensure that tree removal, pruning, or relocation is carried out responsibly, with consideration for environmental impact, neighborhood aesthetics, and public safety. 

Homeowners and developers benefit from clear rules, structured permit processes, and guidance on sustainable tree management, making Ottawa a model city for urban tree conservation. Understanding these laws helps protect property, maintain the health of the urban canopy, and avoid costly fines.

Tree Protection By-law No. 2020-340

Ottawa’s Tree Protection By-law No. 2020-340 is the cornerstone of urban tree management. It sets clear standards for tree removal, pruning, and maintenance on both private and public properties. The by-law emphasizes the protection of mature trees, requires permits for trees over 30 cm in diameter, and outlines exemptions for hazardous or dead trees. Homeowners who follow these guidelines can avoid penalties, preserve property value, and contribute to the city’s environmental sustainability.

  • Always check the tree diameter before removal.
  • Consult with certified arborists for assessments.
  • Keep documentation for any approved permits.

Tree Permit Application Process

The permit application process ensures that tree removal or pruning is carefully evaluated. Homeowners must provide detailed information about the tree, its location, species, and reason for removal. In some cases, an arborist report or site plan is required to confirm the tree’s health and potential risks. Once submitted, the city reviews the application to ensure compliance with the by-law and may issue permits with specific conditions or requirements.

  • Submit applications well in advance to avoid project delays.
  • Include photographs and tree measurements for faster approvals.
  • Follow permit conditions strictly to remain compliant.

Exemptions and Emergency Removals

Certain trees can be removed without a permit under specific conditions. Dead, diseased, or hazardous trees threatening public safety are often exempt, but documentation or inspection may still be required. Emergency removals during storms or after structural damage are also accommodated, allowing homeowners to act quickly without violating the law.

  • Notify the city promptly after emergency removal.
  • Keep proof of hazard assessment for records.
  • Replant or compensate for removed trees if required.

Fines and Enforcement

Non-compliance with Ottawa’s tree bylaws can result in significant penalties. Unauthorized removal of protected trees may incur fines up to $100,000, along with possible legal action or mandatory restoration orders. Enforcement ensures that homeowners and developers prioritize tree health, contribute to urban canopy sustainability, and follow proper procedures for any tree-related work.

  • Avoid unpermitted removal at all costs.
  • Consult the by-law or an arborist if unsure about regulations.
  • Maintain permits and receipts for proof of compliance.

Benefits of Ottawa’s Tree Regulations

Ottawa’s comprehensive tree bylaws and permits offer multiple advantages beyond legal compliance. They help maintain property value, enhance urban biodiversity, reduce environmental stress, and protect residents from hazards caused by weak or diseased trees. Following these rules ensures that homeowners can safely manage their property while contributing to a greener, healthier, and more sustainable city.

  • Plan landscaping projects with by-law requirements in mind.
  • Use native or pollution-tolerant species when planting replacements.
  • Schedule regular inspections to maintain tree health and prevent violations.

Tree bylaws & permits in Ottawa Cost

The cost of tree permits in Ottawa varies depending on the type, size, and location of the tree, as well as whether it requires removal, pruning, or replacement. Understanding these costs helps homeowners plan projects efficiently while ensuring compliance with city bylaws.

Permit TypeTree Size/ConditionTypical Cost (CAD)Notes
Tree Removal PermitDiameter ≥ 30 cm$100 – $500Cost varies by species and number of trees; it may require replacement.
Pruning or Trimming PermitProtected Trees$50 – $150Minor pruning may be exempt; major pruning requires city approval.
Emergency Hazard Tree RemovalAny size$150 – $400For safety hazards, proof of emergency is usually required.
Replacement Tree FeeFor removed or damaged trees$150 – $1,000Dependent on tree size, species, and planting location.
Multiple Tree Permit Application3+ Trees$250 – $1,200Bundled permits may reduce per-tree costs.

This table helps homeowners estimate expenses and make informed decisions while adhering to Ottawa’s tree protection bylaws.

Conclusion

Proper compliance with the Tree Protection By‑law No. 2020‑340 enables homeowners to manage their trees responsibly while contributing to the overall health of Ottawa’s urban forest. By understanding permit requirements, following approved removal and pruning guidelines, and coordinating with certified arborists, property owners can protect trees, preserve property value, and avoid costly fines. 

Engaging proactively with tree bylaws and permit processes helps ensure that Ottawa’s trees continue to provide shade, green space, and ecological benefits for years to come. Staying informed, documenting tree work properly, and choosing the right species for your landscape are simple steps that safeguard both your property and the city’s tree canopy.

FAQS

Can I remove a tree without a permit in Ottawa?
Trees located on private property in Ottawa can often only be removed without a permit if they are dead, hazardous, or on a very large property where other regulations apply.

How do I measure a tree’s diameter for a permit application?
You measure the tree’s trunk diameter at approximately 1.3 metres (51 inches) above the ground and convert circumference to diameter using π for accuracy.

What are the cost details for a tree removal permit in Ottawa?
The application fee for a tree removal permit on private property in Ottawa generally starts around CAD $150 per tree for non‑development cases.

When must a tree permit be posted on the property?
Once granted, a distinctive tree permit must be visibly posted on the property and on the tree itself for at least seven days before removal and for seven days after completion.

What happens if I remove a protected tree without a permit in Ottawa?
Unauthorized removal or damage of a protected tree can result in fines ranging from CAD $500 up to $100,000, depending on the severity of the violation. 

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