Mason Poratto-Mason LLP is a Sudbury, Ontario law firm that traces back to 1990, when it started as Desmarais, Ouellette & Mason. It practises family law, corporate law, wills and estates, tax appeals, real estate, civil law and employment law from its office on Larch Street.

Practice areas

Wills, Estates & Trusts Real Estate Law Family Law Business & Corporate Law Tax Law Civil Litigation & Dispute Resolution Employment & Labour Law Personal Injury

Good to know

A person using a wheelchairWheelchair accessibleA rainbow pride heartLGBTQ+ friendlyA blue parking sign beside a car in a parking spaceParking availableA calendar with a checkmark beside a clockBy appointment

Fees & payment

Scales of justice and a gavel above a Legal Aid bannerLegal aid

Lawyers 3

Adam Mason Lawyer Business & Corporate LawTax Law M. James Mason Senior Partner Personal InjuryCivil Litigation & Dispute Resolution Samantha Prescott Lawyer Family LawReal Estate Law

This firm’s lawyers at a glance

Called to the bar
1986–2018 · median 8 years in practice 3 of 3 lawyers
Law schools
Bora Laskin Faculty of Law, Lakehead University (2), University of Windsor 3 of 3 lawyers
Languages on the roster
English, French

Who handles what

Where to find them

40 Larch Street, Suite 202, Sudbury, Ontario P3E 5M7 · 705-560-8133

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