About Long Kumka Family Law

Long & Kumka Family Law is a Markham firm that focuses on family law, working from an office on Woodbine Avenue in York Region. Senior partner Jennifer Long has practiced family law for over 20 years, focusing on Markham, Stouffville, and the wider York Region along with Toronto and Durham Region. Managing partner Kat Kumka took a different route into the practice, completing a Bachelor of Social Work and a Master of Social Work alongside a Juris Doctorate, then spending close to a decade in clinical mental health settings with children, youth, and families before moving into family law full time.

That mix shapes how the firm approaches cases. Long is a collaboratively trained lawyer, and both partners favour negotiation and mediation over court appearances where a family's situation allows it, while still handling litigation when a case needs it. The firm's work covers the range of family law practice, from divorce, separation agreements, and parenting arrangements to child and spousal support, division of property and debts, domestic violence matters and restraining orders, and cohabitation and marriage contracts.

In the community

  • Long & Kumka Family Law is a member of the Markham Board of Trade.
  • Jennifer Long is a member of the Ontario Association of Collaborative Professionals, the York Region Law Association, the Durham Law Association, and 100 Women Who Care Durham and Stouffville.

Where to find them

8901 Woodbine Ave #219, Markham, ON L3R 9Y4

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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 ↗

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