About Douglas

Doug Tannahill has practiced law in Brampton since he was called to the bar in 1975. He completed his undergraduate degree at Ashland University in Ohio before earning his law degree at Osgoode Hall. His practice covers corporate and commercial law, with particular emphasis on commercial real estate and leasing agreements, and he advises on matters ranging from amalgamations to secured loans to share and asset purchases. Doug is a grandfather of five and is involved with several charitable organizations in Brampton, including a local homeless shelter.

Practice areas

Business & Corporate Law Real Estate Law

Education & credentials

Law school
Osgoode Hall Law School
Undergraduate
Ashland University

Listing compiled from public sources in July 2026. Confirm Douglas D. Tannahill’s licence and standing in the Law Society of Ontario directory ↗