Hamilton Tree Removal Permits: Which Bylaw Applies & Arborist Reports

Hamilton has several overlapping tree rules

Some follow former municipal boundaries, some apply only to a woodland, some depend on tree ownership, and some use a detailed schedule map.

Start with our Hamilton property rule lookup.

Rules by former municipality

Ancaster

By-law 2000-118 applies within its Schedule A area to defined heritage trees and qualifying woodlands. The heritage-tree definition starts at 45 cm DBH, but willow, poplar, Siberian elm, Manitoba maple and Norway maple are excluded at any size. No permit is needed to remove a Heritage Tree on private land within 7.5 metres (25 feet) of the outer edge of an occupied building, and an attached garage counts as part of the building. A 45 cm tree is not automatically protected just because the address says Ancaster.

Dundas

By-law 4513-99 applies to mapped lots and designated land classes, not every property in former Dundas. Its common trigger is 15 cm diameter measured 0.3 m above ground. Specified yards in the Cross-Melville area use a 10 cm trigger. We check the Dundas schedules for each address.

Stoney Creek

By-law 4401-96 covers qualifying woodlots of at least 0.5 ha and designated Niagara Escarpment land. Its thresholds are 30 cm for deciduous trees and 15 cm for conifers. The former Stoney Creek boundary alone does not make every residential tree subject to this bylaw.

Flamborough and Glanbrook

Neither area has a general legacy bylaw for an ordinary individual tree. The city-wide woodland rule, public-tree rule, conservation regulation, development approvals, and enacted scheduled areas still apply where they cover the property.

Former City of Hamilton (Lower City, the Mountain, East End)

The former City of Hamilton has no general legacy bylaw for an ordinary individual tree. A City-owned tree still requires permission under Public Tree By-law 15-125. Woodland rules, the 2023 scheduled areas, conservation regulation, and development approvals also apply where they cover the property.

Three rules that cross the old boundaries

1. Public Tree By-law 15-125 applies anywhere in Hamilton when the tree is City-owned.
2. Woodland Conservation By-law R00-054 applies city-wide to qualifying woodlands of at least 0.81 ha.
3. Urban Woodland By-law 14-212 applies inside the Urban Boundary to qualifying woodlands of at least 0.2 ha.

The 2023 amendments also created three mapped blocks (Schedules A1 to A3 of By-law 23-088) where individual trees at 20 cm DBH are protected. The exceptions are a tree within 7.5 metres of an occupied building that existed when the bylaw passed and is not part of a woodland, and a Siberian elm, Norway maple, Tree of Heaven or Manitoba maple (unless removing it would drop a woodland below the tree count that makes it a woodland). Those schedule sheets are not the same as a former municipality boundary and must be checked separately.

Urban Woodland By-law

Hamilton’s Urban Woodland By-law (14-212) applies inside the Urban Boundary to woodlands of 0.2 hectares or more. It protects woodland ecosystems rather than every stand-alone tree. The older R00-054 rule remains the city-wide woodland layer for qualifying woodlands of at least 0.81 hectares.

Applications under the Urban Woodland By-law involve a more detailed ecological assessment and are reviewed by the city’s environmental planning staff.

Niagara Escarpment

The Niagara Escarpment runs through Hamilton, and properties within the Escarpment plan area are subject to the Niagara Escarpment Planning and Development Act. This is a provincial regulation that operates independently of any municipal bylaw. If your property is in the Escarpment plan area, you need a Development Permit from the Niagara Escarpment Commission for tree removal or any site alteration.

The Escarpment rules apply across all parts of Hamilton, regardless of which former municipality your property was in. Ancaster, Dundas and parts of Stoney Creek border the Escarpment.

Conservation Authority Lands

Properties near watercourses, wetlands, and other regulated areas fall under the jurisdiction of the Hamilton Conservation Authority. A permit is needed for grading, filling, building or interfering with a wetland or watercourse in a regulated area. Cutting a tree does not by itself need one.

How to Apply

For a Legacy or Scheduled-Area Rule

Contact the city’s Municipal Law Enforcement, Trees (MLETrees) team by email at MLEtrees@hamilton.ca or by calling 905-546-2424 ext. 2782. We confirm the bylaw and schedule with MLE Trees staff before we assemble the application. An application can include:

• A description of the tree(s) proposed for removal
• An arborist report documenting species, size, health, and removal justification
• A site plan showing tree locations
• Photos of the tree

For Urban Woodland or Development Applications

Development-related tree preservation plan reviews are submitted through the city’s planning department. Confirm with Hamilton for the review fee. A detailed Tree Preservation Plan prepared by a certified arborist is required.

For Escarpment Properties

Contact the Niagara Escarpment Commission for a Development Permit application. Our arborist report serves as supporting documentation for both the municipal and NEC applications.

Penalties

Penalty ranges vary by which bylaw applies:

• Individuals face up to $10,000 or $1,000 per tree, whichever is greater, on a first conviction, and up to $25,000 or $2,500 per tree on a later one
• Corporations face up to $50,000 or $5,000 per tree on a first conviction, and up to $100,000 or $10,000 per tree on a later one
• A court can also order the offender to stop and to correct the contravention, including replanting
• Niagara Escarpment Commission violations carry separate provincial penalties

The Proposed New Bylaw

Hamilton has proposed a unified private tree bylaw (a Harmonized Private Tree By-law) to replace the current patchwork system. If adopted, it would bring consistent rules across all parts of the city within the urban boundary. The bylaw has not yet passed. The City’s consultation on the draft ran through April 2026, and no Council date is set. See our detailed guide to the proposed 2026 bylaw for the draft thresholds, what’s already in force for developers today, and how to get notified the day it passes.

Common Questions

When Hamilton requires a permit

Only if one of Hamilton’s rules covers the tree, because Hamilton has no single private tree bylaw. Former Ancaster, Dundas, and Stoney Creek each keep their own legacy rules, two woodland bylaws cover qualifying woodlands (one city-wide, one inside the Urban Boundary), and the Niagara Escarpment adds a provincial layer. Our Hamilton property lookup narrows down which rules need checking for a specific address.

What an application costs

Most of Hamilton’s tree bylaws list no application fee. The exception is a development-related Tree Preservation Plan review, which carries its own fee (confirm the amount with Hamilton).

Status of the new city-wide tree bylaw

A Harmonized Private Tree By-law has been proposed to replace the patchwork, and Council has not voted on it. Our 2026 bylaw guide tracks the draft thresholds and what already applies to developers today.

Working with The Arborist Group

We find which Hamilton bylaws apply to the property, then prepare one arborist report for the City, the Conservation Authority and the Niagara Escarpment Commission as needed.