North London property guide
Tree Preservation in Masonville and Sunningdale
North London includes active development and mapped natural-heritage features. Property-level tree protection still depends on the exact site and work.
Source-backed local context
Natural-heritage context is mapped, not guessed
The London Plan’s Natural Heritage map provides the appropriate starting point for site context. Development applications can also require tree preservation plans or other studies.
Property checklist
Start with the tree, not the neighbourhood stereotype
Measure
Estimate DBH at 1.4 m and document any fork, slope or trunk irregularity.
Locate
Confirm private, boulevard or boundary ownership and check for protected-area or heritage context.
Assess
Have a qualified arborist identify the actual condition and an appropriate maintenance objective.
Apply
Submit the current quote before work and wait for the City’s decision.
Construction pressure
Protect retained trees from access and compaction
Construction damage often comes from equipment, stockpiles, grade changes and trench routes rather than direct trunk contact.
Set the barrier and access plan before work starts, and coordinate any needed pruning before machinery occupies the site.
Possible TCCP fit
Eligible work and a qualified professional are still required. Funding is not automatic.
Check the by-law
Within the Urban Growth Boundary, the Distinctive Tree rules may apply. Tree Protection Areas use different rules.
Primary sources
Check the official rules
Program decisions are made by the City of London. These sources were reviewed on July 29, 2026.