What is an Arborist Report?

An Arborist Report is a detailed description of a single tree, or all the trees on one property. It is written by an ISA Certified Arborist to determine the tree’s health. A report may recommend ways to keep a tree healthy during construction or advise the tree’s removal if necessary. Other details you’ll find in an Arborist Report include the tree’s exact size, species, location, and photos.

When do I need an Arborist Report?

Arborist Reports are required for tree removal applications within the City of Toronto and most surrounding municipalities. They’re also useful if you’re planning construction or landscaping projects.

When clients reach out to Cardinal Tree Care about removing an unhealthy or nuisance tree, we’ll make a complete assessment and recommend the next steps to take. In some cases, simply pruning a tree can fix the problem.

In Toronto, large trees (those wider than 30cm at chest height) can be pruned without requiring a permit. If you have trees growing in ways that could be dangerous for people and property, a good trim might be what they need.

If your tree has died, is nearly dead, or is in infected with the Emerald Ash Borer, it may qualify for a permit exemption under the City of Toronto Tree bylaw. In these cases, an Arborist Report is usually required to be submitted to the city. 

What is the cost of an Arborist Report?

Cardinal Tree Care employs ISA Certified Arborists who write all our reports so you can be sure that your report will meet or exceed what is required by City of Toronto bylaws. Our Arborist Reports include detailed information of your tree(s), photos, re-planting plan, and a site plan.
Our Arborist Report fees also include the completion of the application form on your behalf and submission to the municipal department. Should the city have any questions or require any clarification for your tree permit, we will correspond with city arborists and planners until a decision is reached. This correspondence is included in our fees.

Non-Construction Related Arborist Reports cost $345 plus HST. These types of reports are useful for many purposes including:

– Pruning city trees in a front yard
– Removing unwanted trees in backyards to provide more sunlight
– Removing trees that are too messy or hazardous

How long does an Arborist Report take?

An arborist report takes about a week to complete.

When submitting a permit application to the city, additional time will be required for signing applications and submission.

Our goal is to have the application documents (arborist report, application form, site plan, etc.) submitted to the city within two weeks.

For more information on City of Toronto tree permits, see PERMIT APPLICATIONS

Why us? We are I.S.A. Members. We have a code



Strive for continuous self-development by increasing their qualifications and technical proficiency by staying abreast of technological and scientific developments affecting the profession.


Not misuse or omit material facts in promoting technical information, products, or services if the effect would be to mislead or misrepresent.


Collaborating with you and your trees to exceed your expectations