Sébastien Poirier

4.4 (7 reviews )

Montréal Quebec Canada

Environmental Law

Recognized Since Recognized in Ones to Watch since 2026

514-878-4311 Website

About Sébastien

Sébastien Poirier is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law.Sébastien, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sébastien is held by other top lawyers in the same geographic and legal practice area.

Sébastien Poirier is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law.Sébastien, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sébastien is held by other top lawyers in the same geographic and legal practice area.

Sébastien Poirier is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law.

Sébastien, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sébastien is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Environmental Law

Education

University of Montreal

Awards & Recognition

Recognized: Environmental Law

Reviews

4.4 / 5

0 Reviews

1,004 Profile Views

Amara Okonkwo

Jan 04, 2026

Always Available and Kept Me Informed Throughout

When my small business faced an environmental compliance issue in Montréal, I was overwhelmed. Sébastien Poirier was incredibly responsive from day one. He answered all my calls promptly, explained co...

Henrik Johansson

Jan 04, 2026

Unmatched Knowledge of Québec Environmental Regulations

As a property developer, I needed expert guidance on soil contamination laws. Sébastien's expertise was immediately apparent. He cited specific cases from the University of Montreal's research and rec...

Yuki Nakamura

Jan 04, 2026

Secured a Landmark Settlement for Our Community

Our neighborhood in Montréal was affected by industrial pollution, and we sought Sébastien's help for a class action. He negotiated tirelessly with the corporation's legal team. The result was a $2.3...

Fatima Al-Rashid

Jan 04, 2026

Showed Genuine Care During a Difficult Time

After a chemical spill impacted my family's health, I felt lost. Sébastien listened with such compassion, understanding our fear and frustration. He didn't just see us as a case—he checked in on our w...

Diego Alvarez

Jan 04, 2026

Exemplary Professionalism and Stellar Reputation

Hiring Sébastien Poirier for our corporate environmental audit was a decision based on his impeccable reputation. His professionalism was evident in every interaction—meticulous documentation, punctua...