1. Confirm the protected-tree trigger
20 cm Use the exact municipal measurement method and protected-tree definition.
A plain-English guide to what Cambridge publishes about tree removal and protection. The first question is whether the rule covers your private tree at all—not every City tree bylaw is a private-yard permit bylaw.
Cambridge’s published tree and bylaw rules, in plain English:
Cambridge requires a private-tree removal permit to remove, cut down or otherwise injure a tree with a diameter of 20 cm or more on private property.
The City has separate exemptions for some dead or imminent-hazard trees and requires supporting tree information for a standard permit application.
Cambridge applies its own municipal tree rules within Ontario. See the Ontario tree-rule overview for province-wide context; this page focuses on the ownership, diameter and site rules published for Cambridge.
These are the main signals in the Cambridge municipal source: who the rule covers, whether a permit path is identified, any published diameter signal, and extra requirements that can change the answer.
Cambridge publishes private-tree controls, so the first job is to identify whether this specific tree is protected before booking removal.
20 cm Use the exact municipal measurement method and protected-tree definition.
The Cambridge source identifies private-tree rules; boulevard, City-owned and shared-boundary trees can follow a different process.
If the Cambridge source requires authorization, wait for the municipal decision and read the permit conditions before cutting.
For general tree-law concepts, use these guides:
Public vs. private trees · Construction near trees · Tree-removal permits ·The source reviewed for Cambridge does not justify assuming that ordinary yard construction is always outside tree rules. If work could affect a City tree, boundary tree, protected area or a tree retained through development approval, confirm the municipal requirements before excavation or root disturbance.
Cambridge requires a private-tree removal permit to remove, cut down or otherwise injure a tree with a diameter of 20 cm or more on private property.
Open Cambridge’s rule ↗If the trunk is on Cambridge municipal land, a boulevard or road allowance, do not self-authorize pruning or removal. Confirm ownership and use the municipality’s tree process.
Check ownership rules ↗If the trunk sits on or very near a property line in Cambridge, confirm ownership before work. Municipal tree rules do not replace private-law rights involving a co-owned or neighbouring tree.
Check local application rules ↗In Cambridge, development work such as demolition, additions or subdivision can bring tree-retention, arborist or replacement requirements into the approval path; use the linked development-tree source for the site.
Check development-tree rules ↗Private-tree regulation is identified in the Cambridge source. Primary source checked September 13, 2026. This page keeps that local rule separate from general arborist advice and does not import another city’s threshold.
Open primary Cambridge source ↗How Tree Rules Canada fact-checks pages →Use Cambridge’s current municipal source before booking removal or construction near a tree. That source controls the current threshold, exceptions, forms, fees and any replacement conditions.
Cambridge tree sources checked September 13, 2026. Re-check the linked municipality for current fees, protected-tree definitions and permit steps; Tree Rules Canada is independent.