McGuinty Law Offices Professional Corporation is an Ottawa based full service law firm with more than 30 years of experience. It practices wills and estates, personal injury, real estate, family law, mediation, business law, and civil litigation. The firm offers contingency fee arrangements on some files so clients don't pay legal fees up front.

Practice areas

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

Good to know

A person using a wheelchairWheelchair accessible

Fees & payment

A shield with gold coins, a dollar sign and a checkmark sealContingency

Lawyers 4

Antoine Merizzi Partner, Co-Chair of the Wills, Estates and Trust Law Group Family LawWills, Estates & Trusts Dylan McGuinty Solicitor, Managing Partner Gigi Costanzo Partner Civil Litigation & Dispute ResolutionReal Estate Law James O'Shea Lawyer Business & Corporate LawWills, Estates & Trusts

This firm’s lawyers at a glance

Called to the bar
1985–2023 · median 24 years in practice 3 of 4 lawyers
Law schools
University of New Brunswick, University of Ottawa, University of Windsor 3 of 4 lawyers
Languages on the roster
English, French

Who handles what

Where to find them

1192 Rockingham Ave. Ottawa, ON, K1H 8A7 · 613-526-3858

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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 ↗