Grossman Isaac LLP
3 lawyers · City of Toronto
One of 2,345 law firms listed in Toronto, and one of 579 handling Family Law.
About Grossman Isaac LLP
Grossman Isaac LLP is a Toronto family law firm with its office at 4950 Yonge Street in North York. It was founded by Jerrod Grossman, called to the Ontario bar in 2011, and Diana Isaac, called in 2010. Together they bring more than 30 years of combined experience to high conflict family law matters, and both appear before every level of Ontario's courts, from the Ontario Court of Justice up to the Court of Appeal. The firm is a small LLP with a team of three lawyers, including senior associate Michael Ashley.
The practice covers separation and divorce, property division and equalization, spousal support, parenting arrangements, domestic and cohabitation agreements, uncontested divorce, and emergency motions, along with mediation and arbitration as alternatives to a trial. Grossman Isaac frames its approach around four principles it calls strategy, urgency, clarity, and compassion. Isaac leads the firm's strategic direction as managing partner, while Grossman's practice includes cases involving business owners, urgent parenting motions, and clients with substantial assets.
Ashley joined as a senior associate after a Bachelor of Fine Arts from the University of Ottawa in 2012 and a law degree from Osgoode Hall Law School in 2015, and now practises exclusively in family law. The firm has also been sought out as a media source, with features on outlets including CBC, Financial Times, BNN Bloomberg, and Zoomer Radio.
Practice areas
Milestones & recognition
- Jerrod Grossman was called to the Ontario bar in 2011 and Diana Isaac in 2010, before founding the firm together.
- The firm has been featured as a media source by outlets including CBC, Financial Times, Global Television Network, Breakfast Television, BNN Bloomberg, NEWSTALK 1010, and Zoomer Radio.
In the community
- Grossman is involved in coaching youth sports and in charitable fundraising.
- Isaac supports causes related to breast cancer awareness.
Good to know
Wheelchair accessibleLawyers 3
This firm’s lawyers at a glance
- Called to the bar
- 2010–2016 · median 15 years in practice 3 of 3 lawyers
- Law schools
- Osgoode Hall Law School 1 of 3 lawyers
Who handles what
The neighbourhood
The firm's office is in Madison Centre, an office and retail tower at 4950 Yonge Street. Madison Centre sits in the North Yonge Corridor, the office district that has grown up along Yonge Street just north of Sheppard Avenue in North York. It's a stretch of corporate towers rather than a residential strip, which fits a firm whose family law clients come from across Toronto and the wider Greater Toronto Area rather than a single local community.
Frequently asked questions
- Does Grossman Isaac LLP handle high conflict divorce and custody disputes?
- Yes. The firm focuses on complex, high conflict family law matters, including contested divorces, urgent parenting motions, and disputes over business or other substantial assets.
- I'm a business owner going through a divorce. Can Grossman Isaac LLP help divide complex assets?
- Yes. The firm regularly assists clients with intricate property and financial portfolios, including business valuations, real estate holdings, and investment structures.
- Can Grossman Isaac LLP draft a prenuptial or cohabitation agreement?
- Yes. The firm drafts domestic and cohabitation agreements for couples planning ahead, and also reviews and advises on changes to existing agreements.
- How quickly can Grossman Isaac LLP respond to an urgent parenting or emergency motion?
- The firm can arrange an urgent family law consultation with a senior lawyer for time sensitive matters, and its services include preparing and arguing emergency motions on tight timelines.
- How does Grossman Isaac LLP charge for its services?
- Fees may be billed hourly or structured as part of a tailored engagement plan, with an emphasis on discussing costs upfront.
- How big is Grossman Isaac LLP and where is it located?
- Grossman Isaac LLP is a small firm of three lawyers, based at 4950 Yonge Street in North York, serving clients across Toronto and the wider Greater Toronto Area.
Where to find them
4950 Yonge Street, Suite 1202, Toronto, Ontario, M2N 6K1 · 416-385-9653
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Legal AidListing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗