Johnston Montgomery Watson is a law firm in Whitby that has served Durham Region and the GTA for over 40 years. It handles wills and estates, litigation, corporate and commercial law, and real estate law. Founder Patrick Johnston practiced in the region for almost 50 years before retiring in December 2020, and the firm now continues under partners John Montgomery, who joined in 1995, and Erin Watson, who joined in 2012.

Good to know

A person using a wheelchairWheelchair accessibleA laptop showing a video callVirtual appointmentsAn office interior with a desk and chairsIn-person services

This firm’s lawyers at a glance

Called to the bar
2012 · median 14 years in practice 1 of 2 lawyers

Where to find them

201 Byron St S, Whitby, ON L1N 4P7 · 905-666-2252

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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 ↗