Can Niman Mamo help with a high conflict custody dispute or a complex division of property?

Yes. Partner Christopher Mamo focuses on complex financial disputes and high conflict parenting cases, and the firm's lawyers handle contested custody, property division, and support matters.

Does Niman Mamo draft marriage contracts or cohabitation agreements?

Yes, marriage contracts and cohabitation agreements are both listed among the firm's family law services.

Where is Niman Mamo located, and how do I reach the firm?

The office is at 480 University Avenue, Suite 1503, in downtown Toronto. The firm can be reached at 416.324.5522 or through the contact form on its website.

Does Niman Mamo offer any tools for working out child or spousal support?

The firm's resources page links to a support calculator, Ontario court forms, and other third-party tools for people going through separation, alongside government resources like the Family Responsibility Office.

How do I book a consultation with Niman Mamo?

Prospective clients can request a consultation through the form on the firm's contact page.

Niman Mamo LLP | LawOnline Directory

About Niman Mamo LLP

Niman Mamo LLP is a Toronto family law firm with a practice restricted entirely to family law work: divorce, property division, parenting and custody, child and spousal support, marriage contracts, cohabitation agreements, adoption, and child protection. Founding partners Richard Niman and Christopher Mamo lead a team of six partners, along with associates and law clerks, from an office on University Avenue in downtown Toronto. Niman was called to the bar in 2011 after completing a joint JD/LLB program through the University of Ottawa and Michigan State University College of Law, and developed a family law focus after joining Niman Gelgoot and Associates LLP in 2014.

Mamo, a Gold Medal graduate of Wilfrid Laurier University who also studied at Western University, trained in dispute resolution and collaborative practice, and works on complex financial disputes and high conflict parenting cases. Harold Niman, who joined the firm as counsel, is a Fellow of the American College of Trial Lawyers with trial experience reaching the Supreme Court of Canada.

Practice areas

Family Law

Milestones & recognition

The firm was included among the 2025 Best Law Firms in Toronto for family law.
Richard Niman is an associate editor of Evidence in Family Law and co-authored the family law chapter of Bullen & Leake & Jacob's Canadian Precedents of Pleadings (Third Edition).
Richard Niman is a member of the Advocates' Society and is a faculty member for the Osgoode Certificate in Family Skills and Practice program.
Toronto Life magazine listed Harold Niman among Toronto divorce lawyers in 2009.
Harold Niman is a Fellow of the American College of Trial Lawyers and received the Continuing Legal Education Long-Term Achievement Award from the Law Society of Upper Canada.

In the community

Richard Niman volunteers with Camp Kirk, a program supporting children with learning disabilities, ADHD, and autism.
Harold Niman has taught the Ontario bar admission course and contributed to Osgoode Hall Law School's Intensive Family Law and Trial Practice programs.
Harold Niman co-chaired the Six-Minute Family Law Lawyer and Ten-Minute Family Law Judge continuing legal education programs.

Good to know

Wheelchair accessible

Lawyers 22

This firm’s lawyers at a glance

Called to the bar: 2011–2025 · median 8 years in practice 9 of 22 lawyers
Law schools: Queen's University (2), University of Ottawa (2), McGill University, Osgoode, University of Ottawa and Michigan State University College of Law, University of Toronto and 3 more 11 of 22 lawyers
Languages on the roster: English, French, Romanian, Spanish

Who handles what

The neighbourhood

Niman Mamo's office, Suite 1503 at 480 University Avenue, sits on the same downtown Toronto avenue as the Ontario Superior Court of Justice courthouse at 361 University Avenue, a few blocks south. That courthouse houses the court's criminal and family branches.

Frequently asked questions

What areas of law does Niman Mamo handle?: Niman Mamo LLP's practice is restricted to family law: divorce, property division, parenting and custody, child and spousal support, marriage contracts, cohabitation agreements, adoption, and child protection.
Can Niman Mamo help with a high conflict custody dispute or a complex division of property?: Yes. Partner Christopher Mamo focuses on complex financial disputes and high conflict parenting cases, and the firm's lawyers handle contested custody, property division, and support matters.
Does Niman Mamo draft marriage contracts or cohabitation agreements?: Yes, marriage contracts and cohabitation agreements are both listed among the firm's family law services.
Where is Niman Mamo located, and how do I reach the firm?: The office is at 480 University Avenue, Suite 1503, in downtown Toronto. The firm can be reached at 416.324.5522 or through the contact form on its website.
Does Niman Mamo offer any tools for working out child or spousal support?: The firm's resources page links to a support calculator, Ontario court forms, and other third-party tools for people going through separation, alongside government resources like the Family Responsibility Office.
How do I book a consultation with Niman Mamo?: Prospective clients can request a consultation through the form on the firm's contact page.

Where to find them

480 University Avenue, Suite 1503, Toronto, ON M5G 1V2 · 416-324-5522

Similar firms in City of Toronto

Unified LLP

19 lawyers

Unified LLP is a Toronto law firm, with an additional office in Waterloo Region, practicing family law, employment and labour law, disability law, and property and commerce law. Its lawyers represent individuals, unio…

Family Law

Employment & Labour Law

Personal Injury

Real Estate Law

Siskinds LLP

19 lawyers · Est. 1932

Siskinds LLP is a full-service law firm founded in 1932, serving individuals, families, and businesses in southwestern Ontario and across Canada from offices in London, Sarnia, Toronto, Vancouver, and Québec City. The…

Family Law

Business & Corporate Law

Personal Injury

Class Actions

Ricketts Harris LLP

24 lawyers

Ricketts Harris LLP is a downtown Toronto law firm with roots tracing back about a hundred years. It practices family law, civil litigation, employment law, insurance law, estate planning and litigation, and business …

Family Law

Civil Litigation & Dispute Resolution

Employment & Labour Law

Insurance Law

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