Arborist Licensing By-law

Arborists will soon be required to be licensed in the town of Oakville

If you are an arborist or own a tree or arboricultural company, you will be required to obtain a licence starting in 2018.

At Council's direction on May 1, 2017, staff are preparing licensing regulations for arborists in Oakville. A report to Council in October will present information on a proposed approach including draft licensing regulations and an implementation plan for licensing starting in 2018.

Do you provide arborist services within the town of Oakville?

If so, join us to discuss possible arborists licensing regulations.

Open House
6:30-8 p.m.
Tuesday, June 27
Multi-purpose room 1 and 2

Queen Elizabeth Park Community and Cultural Centre
2309 Bridge Road

Send us your comments

If you are unable to attend the meeting please send us your comments at


In conjunction with the newly implemented Tree Protection By-Law, the licensing of arborists will provide added protection to the town's urban forest and consumers.

Licensing of arborists will be similar to the licensing of existing private industries such as landscapers, pool contractors, HVAC installers and fence installers.  Annual licensing of certified arborists and arborists firms will help protect and enhance the town's urban forest and tree canopy and promote increased accountability of tree removal.

Staff will present a report to Council outlining recommended arborist regulations, implementation timeframes and resource impacts in fall of 2017.

What is an arborist?

There are several types of services and service providers that may perform tree care within the Town of Oakville. In order to preserve the health of the current tree canopy and ensure that trees are not removed without cause there will be a requirement for arborists to obtain a licence to provide their services witihin Oakville.

Licensing classes for arborists

There are three classes proposed that will capture the nature fo the work done by arborists and their respective companies.

The classes are as follows:

Class A: Arborist

"Arborist" means a person trained and knowledgeable in all aspects of arboriculture and satisfies at least one of the following requirements:

  • Certified by the Ministry of Advanced Educations and Skills Development for the International Society of Arboriculture
  • Currently accepted as a consulting arborist with the American Society of Consulting Arborists
  • Registered Professional Forester (APF) as defined in the Professional Foresters Act, 2000, S.O. 2000, c. 18.

Class B: Arboriculture Company

"Arboriculture Company" means a company with knowledge of all aspects of arboriculture and has staff holding valid certifications in the following areas:

  • Arborist
  • Certified Tree Worker
  • Certified Chainsaw Operator

An Arboriculture Company is able to assess health and structure of tree and conduct tree maintenance work.

Class C: Tree Company

"Tree Company" means a company capable of removing, pruning, root pruning, cabling (bracing and propping), fertilizing, planting, stumping or transplanting a tree but not able to assess the health of a tree.

A Tree Company must have staff holding valid certifications in the following areas:

  • Certified Tree Worker
  • Certified Chainsaw Operator

Once an Arborist licence is issued there will be no further requirement to apply for additional licensing such as a landscaping licence.