An Arborist Report submitted in support of this application must be completed by a Certified Arborist and must identify the surveyed location, common and scientific species name, Tree Protection Zone (TPZ), diameter at breast height (DBH), height and condition of the Tree(s), and:
- Provide the justification for any proposed destruction of the Tree(s), and/or provide justification and impacts for any proposed injury of the Tree(s).
- Describe Tree protection measures or other mitigating activities to be implemented.
- Include a map of the subject property that clearly shows the location of each Tree assessed in the Arborist Report.
- Where multiple Trees are assessed in the Arborist Report, provide an inventory table as part of the Arborist Report.
Hazardous Tree means a Tree or portion of a Tree that is destabilized or structurally compromised to an extent that it is likely to lead to a loss, personal injury, property damage, or disruption of activities and/or has a risk rating of High or Extreme, as determined by a Qualified Tree Risk Assessor (TRAQ). A tree is not hazardous solely because it is located in close proximity to a building.
Please note that any of the following actions are considered to be Injury to a tree and require a permit:
- To harm, damage, impair or not protect a Tree in accordance with proper arboricultural practices and the City of Richmond Hill Standards and Specifications Manual, entirely or in part, and/or any acts which will harm a Tree's health or damage a Tree in any manner.
- Removal of more than 20% of the live tissue of a Tree within a twelve (12) month period.
- Encroachment into the Tree Protection Zone.
Tree Protection Zones
The Tree Protection Zone is measured as a radius from the edge of the tree trunk and is dependent on the trunk size of the tree measured as the diameter of the trunk 1.4 metres above the ground.
| Tree Diameter at Breast Height |
Tree Protection Zone |
| 10-14 cm |
1.8 m |
| 15-20 cm |
2.0 m |
| 21-30 cm |
2.4 m |
| 31-40 cm |
2.4 m |
| 41-50 cm |
3.0 m |
| 51-60 cm |
3.6 m |
| 61-70 cm |
4.2 m |
| 71-80 cm |
4.8 m |
| 81-90 cm |
5.4 m |
| 91-100 cm |
6.0 m |
| =/>101 cm |
TPZ=DBH*6 |
Tree Replacement Requirements
|
Diameter at Breast Height of Tree proposed to be removed
|
# of Replacement Trees Required
|
|
10-14 cm
|
0
|
|
15-20 cm
|
1
|
|
21-30 cm
|
2
|
|
31-40 cm
|
2
|
|
41-50 cm
|
3
|
|
51-60 cm
|
4
|
|
61-70 cm
|
4
|
|
71-80 cm
|
5
|
|
81-90 cm
|
5
|
| 91-100 cm |
6 |
| =/>101 cm |
7 |

If you have any questions, please email Planning@richmondhill.ca.
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