About Aitchison Law Office

Aitchison Law Office is a family-run general practice firm based in Oshawa. James Aitchison earned a Bachelor of Laws from the University of Windsor in 1974 and was called to the Ontario bar in 1976, the year the Oshawa practice began, taking on business law, estate planning, wills and estates, real estate and litigation matters. James Aitchison later served for more than 30 years as a judge of the Small Claims Court, part of Ontario's Superior Court of Justice, while still in private practice. Kelly Aitchison joined as a partner in 2000 after articling at McKenzie Lake in London, Ontario, and Laurie Aitchison joined in 2003, returning to Oshawa after being called to the California Bar and later the Ontario Bar. James Aitchison has since retired, and the firm is now run day to day by Kelly and Laurie Aitchison, with law clerks Ruth Caverly, Nicole Vespasiani and Valerie Ward rounding out the team.

Kelly Aitchison practices family law, civil litigation, tax appeals, wills and estate administration, corporate matters, employment law and municipal law, and holds an LL.M. from Osgoode Hall Law School. Laurie Aitchison's dual admission to the California Bar and the Ontario Bar carries into a practice mixing real estate, corporate work and immigration, including U.S. entry waivers and work visas for Canadians. The firm has stayed at the same Oshawa address, 419 King Street West, since 1994.

In the community

  • Kelly Aitchison served on the Durham Region Law Association's board of directors and edited its newsletter, the DURLAW Voice, as well as its Monthly Business Report.
  • Kelly Aitchison spent 9 years as a director of the Lakeridge Health Foundation, the maximum term permitted, including 7 years chairing its Governance and Nominating Committee.
  • Kelly Aitchison is the supervising counsel for the Pro Bono Students Canada Will clinic at the Lincoln Alexander School of Law chapter, overseeing law students who draft wills and powers of attorney.
  • Kelly Aitchison has run free Will clinics with the Heart and Stroke Foundation of Canada and given estate planning and real estate law seminars to corporations and real estate brokerages.
  • Kelly Aitchison served for several years on a local Superior Court of Justice and Ontario Court of Justice committee that builds legal education programs for high school students in partnership with Durham College.
  • James Aitchison volunteered with human rights organizations during a legal career that also included speaking engagements and televised debates on the rights of small business owners.

Good to know

A person using a wheelchairAccessible parkingA calendar with a checkmark beside a clockBy appointment

Where to find them

419 King St West, Suite 604, Oshawa, ON L1J 2K5 · 905-433-1174

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This listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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