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I work with a lot of law firms in the core. I’ve seen Rousseau Mazzuca grow from a few competent and friendly people to the diverse firm that they are now. Every addition to their team has added uniquely talented people that are both professional and friendly. Rousseau Mazzuca persistently challenges themselves to be better and it shows.

Brian Chambers

Very easy to speak with, very supportive and professional in handling my concerns. Definitely would recommend to my friends and family.


I was originally referred to Aaron Rousseau of Rousseau Mazzuca back in 2016 by a trusted friend of mine that is a lawyer in another specialty. I have been a client ever since. Throughout the years, in addition to referring friends myself, I have also been pleasantly surprised that in social gatherings, unprompted, others in other social circles have also been singing his praises as “the best”. I can completely understand why. Aaron is an exceptional lawyer who is incredibly talented in his field. His advice has always guided me in the right direction and protected me. Additionally, because legal matters can be quite emotionally draining, he has shown expertise in navigating matters requiring emotional intelligence as well. I have always felt he was well worth his hourly fees and more, and he bills with integrity.





We provide a wide range of counsel to our individual and corporate clients to ensure their businesses are protected. Our firm assists a broad range of clients, from established companies with international operations to growing entrepreneurial start-ups.


Construction law is a very specialized practice area requiring immense technical knowledge and specific targeted skill in this space. The construction lawyers at Rousseau Mazzuca LLP have extensive experience in all areas of construction law.


We assist both employees and employers. We regularly walk our clients through workplace disputes and understand the interests and unique concerns of each party involved.


We provide strategic counsel and advocacy for individuals and businesses in legal disputes. Our lawyers represent clients in a wide range of matters before various levels of courts and administrative tribunals in Ontario.


With a Will, you maintain the power to determine who will be the guardian for your children, and exactly how your estate will be disbursed among your loved ones.


65 Queen St W, Suite 600
M5H 2M5, Toronto, Ontario
(416) 304-9899
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