About Costa Law Firm

Costa Law Firm is a full service law firm based in Toronto that has been serving the city since 1993. Its main office sits on Bloor Street West, between the Ossington and Dufferin subway stations. Founder David Costa holds a Canadian law degree from the University of Windsor and an American law degree from the University of Detroit Mercy School of Law, along with earlier degrees in music and education. Costa leads the firm's main criminal defence work and also guides its business, municipal, and real estate matters. Beyond criminal defence, the firm handles family law, immigration, real estate, wills and estates, business law, civil litigation, labour and employment, and municipal matters.

One of the firm's lawyers holds a J.D. from the University of Ottawa's Common Law program, earlier science degrees from the University of Alberta and the University of Guyana, and previously worked at the Federal Department of Justice in Toronto. That lawyer belongs to the Ontario Bar Association and the Criminal Lawyers' Association. The firm works in both English and French and can arrange interpreters for other languages. Beyond its Toronto office, it keeps consultation locations in Newmarket, Concord (Vaughan), and Barrie, reaching clients across the Greater Toronto Area, York Region, and Simcoe County.

In the community

  • One of the firm's articling students previously worked as a student fundraiser at the University of Toronto, helping raise over $50,000 for scholarships and programs.

Good to know

A person using a wheelchairWheelchair accessibleA rainbow pride heartLGBTQ+ friendlyA laptop showing a video callVirtual appointmentsA calendar with a checkmark beside a clockBy appointmentAn office interior with a desk and chairsIn-person services

Fees & payment

A price tag with a dollar signFlat feeA clock beside gold coins with a dollar signHourlyA clipboard with a speech bubble and a no-charge dollar coinFree consultation

This firm’s lawyers at a glance

Law schools
University of Ottawa, University of Windsor 2 of 2 lawyers

Offices 4

1015 Bloor Street West, Toronto, Ontario M6H 1M1

17075 Leslie St, Unit 7, Newmarket, ON L3Y 8E1

290 Caldari Rd, Unit 8, Concord, ON L4K 4J4

49 High St, 3rd floor, Barrie, ON L4N 5J4

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This listing was generated by AI from public sources in August 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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