Arborist Report Hamilton: Tree Permit Requirements & 2-Day Turnaround

Understanding Hamilton’s Tree Protection

Hamilton’s tree protection is unlike any other municipality in the GTA. When six former municipalities merged to form the current City of Hamilton in 2001, each brought its own tree bylaws (or lack thereof). Twenty-five years later, those separate bylaws still exist. The result is a patchwork where the rules that apply to your property depend entirely on which part of Hamilton you live in.

This guide breaks down which regulations apply where, so you know what you are dealing with before you start any tree work.

Which Rules Apply to You?

Ancaster

Ancaster has one of the stricter private tree bylaws in Hamilton. Trees with a trunk diameter of 45 cm or more at breast height are protected and require a permit before removal. Ancaster also has heritage tree designations that provide additional protection for exceptional specimens. The heritage district in the village core receives particular scrutiny.

Dundas

Dundas has the lowest diameter threshold in Hamilton at just 15 cm. This means even relatively young trees on your property may require a permit. The Dundas bylaw is similar in scope to Mississauga’s, catching trees that would be unregulated in most of Hamilton. Properties near Dundas Peak and the surrounding conservation areas face additional constraints.

Stoney Creek

Stoney Creek’s tree regulations are more limited, focusing primarily on woodlots within the Niagara Escarpment area. Individual trees on standard residential lots in most of Stoney Creek are not covered by a private tree bylaw. However, if your property is within or adjacent to a woodlot or the Escarpment plan area, regulations apply.

Flamborough and Glanbrook

Neither Flamborough nor Glanbrook had private tree bylaws before amalgamation, and none were adopted afterward. Individual trees on private property in these areas are not regulated by a municipal tree bylaw. Conservation Authority rules and the Escarpment plan still apply where relevant.

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

The former City of Hamilton also has no private tree bylaw. On a standard residential or commercial lot in the lower city, on the Mountain, or in much of the east end, you do not need a municipal permit to remove a tree on your private property.

However, there are exceptions. City-owned trees (boulevard trees, trees in parks) are always protected. And properties within designated urban woodlands, conservation authority lands, or the Niagara Escarpment plan area are subject to those specific regulations regardless of the lack of a general private tree bylaw.

Urban Woodland By-law

Hamilton’s Urban Woodland By-law (14-212) applies city-wide to woodlands of 0.2 hectares or more within the urban boundary. This bylaw protects woodland ecosystems rather than individual trees. If your property is within or adjacent to a designated urban woodland, you need to consider this regulation even if no private tree bylaw applies in your area.

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. This is particularly relevant for properties in Ancaster, Dundas, and parts of Stoney Creek that border the Escarpment.

Conservation Authority Lands

Properties near watercourses, wetlands, and other regulated areas fall under the jurisdiction of the Hamilton Conservation Authority. Work within regulated areas (including tree removal) may require a permit from the Conservation Authority in addition to any municipal requirements.

How to Apply

In Ancaster or Dundas

Contact the city’s Municipal Law Enforcement, Trees (MLETrees) team by email at MLEtrees@hamilton.ca or by calling 905-546-2424 ext. 2782. Applications are paper-based. You will need:

• 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. The review fee is $750. 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 can serve as supporting documentation for both the municipal and NEC applications.

Penalties

Penalty ranges vary by which bylaw applies:

• Individual fines up to $10,000 under most municipal bylaws
• Corporate fines can exceed $100,000
• 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. As of mid-2026, the bylaw is still under council review and has not been passed. 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.

Working with The Arborist Group

Hamilton’s regulatory patchwork makes professional guidance particularly valuable. We determine which bylaws apply to your specific property, prepare arborist reports that meet the requirements of each jurisdiction, and handle applications to the city, Conservation Authority, and Niagara Escarpment Commission as needed. One report, all the bases covered.