Need an arborist report for a permit, insurance claim, or property dispute? Our ISA certified arborists deliver thorough assessments accepted by every municipality in the Greater Toronto Area.
An arborist report is a detailed document prepared by an ISA certified arborist that evaluates the health, structure, and risk level of trees on your property. It's the document municipalities require when you apply for a tree removal permit — and it's essential for insurance claims, neighbour disputes, and construction projects.
Our reports include species identification, trunk diameter measurements, canopy assessments, root zone analysis, health and vigor ratings, structural defect documentation, and clear recommendations. Every report is signed by a certified professional and formatted to meet municipal submission requirements.
Toronto requires a permit to remove any tree 30 cm or larger. An arborist report is a mandatory part of the application. We prepare reports that meet all City requirements.
Toronto bylaw details →Building an addition, pool, or new home? A tree preservation plan identifies which trees can be saved and which need to be addressed before breaking ground.
What's included →After storm damage or a tree failure, an arborist report documents the cause, extent of damage, and recommended actions — critical for your insurance claim.
Book a report →Disagreements over boundary trees, overhanging branches, or root damage? A professional report provides an objective, third-party assessment that can resolve conflicts.
Get an assessment →Buying or selling a home with mature trees? An arborist report reveals any hazards or liabilities, helping you negotiate with confidence.
Request a quote →Concerned about a sick or declining tree? Our assessment identifies the issue — disease, pest infestation, or structural weakness — and recommends a treatment plan.
Book an assessment →Each report follows ISA standards and is formatted for municipal permit submissions across the GTA.
Each municipality has different tree protection bylaws. Here's a quick comparison of permit thresholds across the GTA.
| Municipality | Permit Threshold | Report Required? | Details |
|---|---|---|---|
| Toronto | 30 cm DBH | Yes — mandatory | View Toronto bylaws → |
| Mississauga | 15 cm DBH | Yes — for healthy trees | View Mississauga bylaws → |
| Brampton | 30 cm DBH | Yes — mandatory | View Brampton bylaws → |
| Markham | 20 cm DBH | May be required | View Markham bylaws → |
| Vaughan | 20 cm DBH | Yes — for most permit types | View Vaughan bylaws → |
| Oakville | 15 cm DBH | Recommended | View Oakville bylaws → |
An arborist report is a professional document prepared by an ISA certified arborist that assesses the health, condition, and structural integrity of one or more trees on a property. It includes species identification, measurements, risk ratings, and recommendations.
Yes, if the tree has a trunk diameter of 30 cm or more (measured at 1.4 metres above ground), you need a permit from the City of Toronto. An arborist report from an ISA certified arborist is a required part of the permit application.
The cost varies based on the number of trees, complexity of the assessment, and the type of report needed. Contact us for a free consultation and quote tailored to your project.
Most arborist reports are delivered within 5–7 business days after the on-site assessment. Rush reports may be available for urgent permit applications or insurance claims.
Yes. Our reports are prepared by ISA certified arborists and meet the requirements of the City of Toronto, as well as Mississauga, Brampton, Markham, Vaughan, Oakville, and other GTA municipalities.
Every GTA city has different tree protection bylaws. Learn what's required in your area.