About Lynn Mitchell Law

Lynn Mitchell Law is a Toronto sole practice focused on environmental and energy law. Founder Lynn Mitchell was called to the Ontario bar in 1997 and practiced with two national firms before opening this practice. Mitchell also holds an MBA from the University of Toronto, along with a law degree from the same university earned on the Dean's List, and worked earlier in financial services as a manager and executive before moving into legal practice.

The practice covers litigation before courts and regulatory tribunals and arbitrations, including civil disputes over contaminated lands and Records of Site Condition, appeals of regulatory orders, and defence against prosecutions for environmental law violations. It also advises on permitting and approvals through municipal, provincial, and federal regulatory processes, environmental assessments, and stakeholder engagement, and reviews purchase agreements for environmental risk in real estate, commercial, and natural resource transactions.

Mitchell is a past chair and past vice chair of the Ontario Bar Association's Environmental Law Section, an executive member of the Canadian Bar Association's Environmental, Energy and Resources Law Section, and a member of The Advocates Society and the Ontario Environmental Industries Association.

In the community

  • Mitchell develops and presents at conferences, seminars, and client training sessions on environmental and energy law topics.

Good to know

A calendar with a checkmark beside a clockBy appointment

The neighbourhood

The firm's office is at 36 Toronto Street, the former Excelsior Life Building. Built in 1914 to a design by architect E.J. Lennox, the building carries heritage designation and sits within the St. Lawrence Neighbourhood Heritage Conservation District. Toronto Street itself grew up as a corporate and financial hub in the late nineteenth and early twentieth centuries, and a 1986 to 1987 renovation joined the Lennox building with the adjoining 1874 Millichamps Building through a shared atrium.

Frequently asked questions

What kind of law does Lynn Mitchell Law practice?
The firm focuses exclusively on environmental and energy law, covering litigation, regulatory and permitting matters, risk management, and transaction support.
My property has a contamination issue or a Record of Site Condition problem. Can Lynn Mitchell Law help?
Yes. The firm handles civil litigation over contaminated lands and Records of Site Condition, and advises on managing the risks of owning or operating contaminated property.
I'm facing a regulatory order or a prosecution under environmental law. Does the firm defend those cases?
Yes. The practice includes appeals of regulatory orders and defence against prosecutions for environmental law violations before courts and regulatory tribunals.
We're buying a commercial or industrial property and want to understand the environmental risk before closing. Can the firm review the deal?
Yes. The firm reviews purchase agreements for environmental risk across real estate, commercial operations, and natural resource projects as part of its transaction support work.
Does the firm help with permits and approvals for an energy or resource project?
Yes. The firm assists clients through municipal, provincial, and federal regulatory processes, including environmental assessments and stakeholder engagement, and represents clients before environmental and energy tribunals on project approvals.
How long has the founder practiced environmental and energy law?
Lynn Mitchell was called to the Ontario bar in 1997 and practiced with two national firms before opening this practice, and has since served as chair and vice chair of the Ontario Bar Association's Environmental Law Section.

Where to find them

36 Toronto Street, Suite 850, Toronto, ON M5C 2C5 · 416-597-5410

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗