About Osbourne Valentine LLP

Osbourne Valentine LLP is a Toronto family law firm built around resolving separation and divorce cases outside of court. Ryan Osbourne founded the practice as Osbourne Collaborative Law in 2020, after working as a downtown Toronto litigation lawyer. The firm is now known as Osbourne Valentine LLP, with Sean Valentine among its lawyers. Osbourne earned a Juris Doctor from Osgoode Hall Law School, and Valentine holds law degrees from the University of Windsor and the University of Detroit Mercy; both are trained in collaborative family law and are Accredited Family Mediators. The rest of the team brings a range of backgrounds: one lawyer has practised law since 1986, starting in Honda Canada's legal department before moving into criminal trial work and then family law, and another previously represented Children's Aid Societies in child protection proceedings.

The firm leans on mediation, negotiation and collaborative practice rather than default litigation, though its lawyers still appear in court, including the Ontario Court of Appeal, when a case cannot be settled. Its work covers separation and divorce, domestic contracts such as marriage and cohabitation agreements, family mediation, independent legal advice and unbundled services for clients handling part of their own matter, and wills and powers of attorney. Osbourne Valentine offers customizable flat fee pricing where possible, an approach meant to make costs more predictable from the start.

Milestones & recognition

  • Ryan Osbourne started the practice as Osbourne Collaborative Law in 2020, and it is now known as Osbourne Valentine LLP, with Sean Valentine among its lawyers.
  • Sean Valentine has appeared at all levels of court in Ontario, including the Court of Appeal.
  • One of the firm's lawyers has practised law since 1986, with early experience at Honda Canada's legal department.

In the community

  • The firm publishes a blog for separated and divorced parents, with seasonal posts on topics such as summer parenting schedules, holiday planning and tax season paperwork for co-parents.
  • One of the firm's mediators is an instructor in York University's Family Mediation program.
  • One of the firm's lawyers has served since 2015 as an advisor to two Toronto area cultural groups, the Korean Canadian Symphony Orchestra and the Korean Canadian Chamber Orchestra.
  • The firm's site lists affiliations with Collaborative Divorce Toronto, the Family Dispute Resolution Institute of Ontario, and the Ontario Association of Collaborative Professionals.

Good to know

A person using a wheelchairWheelchair accessible

Fees & payment

A price tag with a dollar signFlat fee

This firm’s lawyers at a glance

Law schools
Osgoode Hall Law School, University of Western Ontario, University of Windsor 3 of 3 lawyers

The neighbourhood

Osbourne Valentine's office is on Merton Street in midtown Toronto, near Yonge Street and Davisville. The surrounding Mount Pleasant West area is dense with apartment and office buildings rather than single family homes, a quieter, more residential setting than the downtown legal district around the courthouses. That fits a firm whose work is built around meetings, mediation sessions and negotiation rather than daily trips to court.

Frequently asked questions

I want to separate but I do not want a courtroom battle. Can Osbourne Valentine help?
Yes. The firm's practice is built around mediation, negotiation and collaborative family law rather than default litigation, and its lawyers are trained in collaborative practice and accredited as family mediators.
Can Osbourne Valentine draft a marriage contract or cohabitation agreement?
Yes. The firm prepares marriage contracts, which can be signed before or after a wedding, and cohabitation agreements for common law couples, which can later be turned into a marriage contract if the couple marries.
Does the firm offer mediation where neither of us has a lawyer advocating for one side?
Yes. Osbourne Valentine offers family mediation, where a neutral mediator helps both spouses work through the issues and reach their own agreement rather than taking either side.
I already have a separation agreement. Can a lawyer just review it before I sign?
Yes, this is called independent legal advice. The firm also offers other unbundled services and family law coaching for clients who want to handle parts of their matter themselves.
Will my case have to go to court?
Not necessarily. Osbourne Valentine tries to resolve matters through negotiation, mediation or collaborative practice, but if court becomes necessary its lawyers represent clients in motions and other court proceedings.
Does Osbourne Valentine handle wills and powers of attorney, or only separation and divorce?
The firm also offers wills and estate planning, including powers of attorney for property and personal care and tax and probate minimization strategies.

Where to find them

124 Merton Street, Suite 306, Toronto, Ontario M4S 2Z2 · 647-499-5565

Similar firms in City of Toronto

Spingos Law

2 lawyers

Spingos Law is a Toronto area firm handling real estate law, mortgages, wills and powers of attorney, estate administration, notary services, and family law. It's a mobile and accessible practice that offers home visi…

Real Estate LawReal Estate LawWills, Estates & TrustsWills, Estates & TrustsNotary & Commissioner ServicesNotary & Commissioner ServicesFamily LawFamily Law

Dara Law Chambers

2 lawyers

Dara Law Chambers is a Toronto professional corporation offering real estate, corporate, employment, civil litigation, and family law services, along with notary and wills and estates work. Lawyer Jasmeet Kaur Dara wa…

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawEmployment & Labour LawEmployment & Labour LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute Resolution

Juzkiw Law Firm

2 lawyers

Juzkiw Law Firm is a boutique law firm based in Toronto, Ontario, serving Ontario's multicultural communities. It practices across family law, criminal law, immigration, civil litigation, personal injury, real estate,…

Family LawFamily LawCriminal DefenceCriminal DefenceImmigration LawImmigration LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute Resolution

Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗