About James Singer Family Law

James Singer Family Law is a sole-practitioner family law firm in Markham, Ontario, with an office in the city's Buttonville area. James Singer has practised law since 1989 and has focused on family law exclusively since 2003. The practice concentrates on two things: outcomes for children, including parenting time, decision-making responsibility, and parental alienation, and the financial side of separation, covering child support, spousal support, and the equalization of property built up during a marriage or a common law relationship.

Singer has argued cases at the Ontario Court of Appeal involving whether Ontario courts had jurisdiction to increase child support when a Michigan child support order was already in place, and the continuation and later termination of spousal support. According to the firm's case summaries, the arguments in Politis v. Politis established an important precedent. Before turning to family law full time, Singer also argued a case at the Court of Appeal that resulted in reversal of a summary judgment on slip-and-fall notice requirements in a claim against the City of Toronto. Files stay with Singer directly rather than being passed between lawyers, and law clerk Maria Kirshenblatt, who has worked with Singer for 20 years and became the firm's exclusive clerk in 2020, handles filings and often attends court alongside Singer.

Where to find them

8901 Woodbine Ave, Suite 219, Markham, ON L3R 9Y4 · 416-223-2007

Is this your firm?

Fix or remove this listing, or add a free listing badge

Something wrong with this listing? Tell us and we’ll hide it right away while we review your request, then correct it or take it down.

Add your free listing badge

Add the free LawOnline listing badge to your website. It tells visitors you’re listed in an independent Canadian lawyer directory and links back to this profile. Being listed isn’t a certification or an endorsement, and the badge doesn’t mean we’ve checked your credentials.

LawOnline.ca Canadian Lawyer Directory listing badge

Similar firms in York Region

Zhan B.Z. Law

1 lawyer

This is a Chinese-language solo legal practice based in Markham, offering notary services, corporate and business law, marriage and family law, and estate and property law in Cantonese and Mandarin. The practitioner i…

Business & Corporate LawBusiness & Corporate LawFamily LawFamily LawWills, Estates & TrustsWills, Estates & TrustsNotary & Commissioner ServicesNotary & Commissioner Services

Mongillo Law Professional Corporation is a family law firm based in Markham that serves clients across York Region, Toronto, Durham, Peel, and Halton. Leonardo Mongillo opened the practice in 2015 after working at a b…

Family LawFamily Law

Akindele Law Professional Corporation is a Markham firm focused on family law, wills and estates, and real estate. It offers personalized, client-centred service for matters such as relationship termination, marriage …

Family LawFamily LawWills, Estates & TrustsWills, Estates & TrustsReal Estate LawReal Estate Law

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 ↗

How this data is compiled and checked · Correct or remove this listing