About

Our Team

We are a husband-and-wife team with over 20 years of combined legal experience. Practicing out of our office in Burlington, Ontario, we provide a personal, accessible, and reliable approach to the practice of law that ensures you feel heard and that you understand the legal process.

Family Law & Litigation

Dorothy Kosinska

Dorothy has been practising exclusively in family law for over a decade. She started her articles at a boutique law firm in Toronto, specializing in family law. She continued her practice exclusively in family law with a litigation focused family law firm in Burlington, where she gained extensive experience appearing before the Ontario Court of Justice and the Superior Court.

She obtained her Collaborative practice certification in 2020 and is an advocate for finding non-destructive resolutions for separating families. Her broad experience, both inside the court process and in alternative dispute resolution processes gives her the essential background to effectively guide her clients through the most appropriate streams to help bring about the best resolution, tailored to their unique circumstances.

Dorothy is a member of Office of the Children’s Lawyer legal panel, representing children to ensure that they are given a voice and empowered during a difficult time in their lives. Through this work she is trained to understand the needs of children going through separation and is able to guide parents to be child-focused.

She is involved in the Halton community through the Halton County Law Association mentorship program, where she provides mentorship and guidance to family lawyers seeking support, and she also sits on the Halton County Law Association board.

Dorothy is a co-author for two of Thomson Reuters, Carswell’s loose-leaf publications: “Domestic Contracts” and “Parenting Law and Practice in Canada.” These are resources used by lawyers throughout Canada for legal research and precedents.

Real Estate & Estate Planning Law

Grant O’Shea

Before opening his law practice, Grant O’Shea gained his experience in a wide range of legal practice areas at one of Hamilton’s largest full service law firms. Realizing his true passion was assisting people outside of the courtroom, Grant focused his practice in the areas of real estate and wills and estates law. After practicing as sole practitioner for over 5 years, he is excited to team up with his wife, Dorothy Kosinska, and expand the firm’s practice areas to include Dorothy’s extensive expertise in Family Law and enable the firm to provide services in all typical areas where family life intersects with the law!

Grant grew up in Burlington, Ontario and is thrilled to be building his practice and assisting people in his home town and the greater Halton area. When he is not in the office, Grant enjoys running, photography, and going hiking with his family at the many great parks and conservation areas that Halton has to offer!

      EXCELLENT  
   Based on 14 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Seth Ferguson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Dorothy is THE person you need to have in your corner.

She is smart, articulate, and has a unique "Dorothy-style" way of giving you the hard facts without beating around the bush... honest, direct, and always with your best interests in mind.

One of the things I appreciated most was her efficiency. Dorothy is always conscious of how she uses her time and yours, which is rare and invaluable when dealing with the potential stress of legal fees. She ensures every interaction is professional, timely, and cost-effective, without sacrificing the quality of her advice or support.

What truly sets Dorothy apart is her ability to bring both empathy and expertise to an emotionally charged process. She listens carefully, helps you understand your options clearly, and fights for you with skill and determination. I always felt well-prepared and confident with her guidance.

If you're looking for someone who will not only handle the legal complexities of your case but also give you the confidence to move forward, Dorothy is the one to call. I can't recommend her highly enough.
  
 
      Posted on Google  
   
   Eric Vogtlander 
 
 
 
 Trustindex verifies that the original source of the review is Google. Dorothy Kosinka’s professionalism and sincerity are commendable, and I am thankful for her exceptional legal service. She is a skilled negotiator and a staunch advocate for her clients.
  
 
      Posted on Google  
   
   Steve Kogon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Dorothy has been extremely professional  and supportive in helping me navigate my separation and divorce.  Her experience and no nonsense approach has been invaluable.
  
 
      Posted on Google  
   
   darshani phillips 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grand O'Shea did my will and then my son's purchase of a home.
He was meticulous and we were all pleased with his work and his friendly personality. He was there on time when we needed him!!
  
 
      Posted on Google  
   
   Sia Ariana 
 
 
 
 Trustindex verifies that the original source of the review is Google. Undoubtedly, Grant O'Shea is the best lawyer that we could ever imagined to have for our sold and purchased property. He is highly knowledgeable, experienced, and a true professional in his field. He went above and beyond to protect us as his client from every possible angle with no hesitation to use all resources to help us to feel great and being protected throughout our journey. He's super detail oriented and highly responsive, which is crucial when it get to those size of deals. Anyway, I hope I could convince anyone reading this review to proceed working with Grant with no hesitation. At the end, THANK YOU again Grant.
  
 
      Posted on Google  
   
   Jenn Lesiak 
 
 
 
 Trustindex verifies that the original source of the review is Google. Patient & knowledgeable. I would recommend Grant's services!
  
 
      Posted on Google  
   
   Robert Wang 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grant recently helped me with the legal aspects of my first home purchase. What I liked about Grant's service is his professionalism, solid legal expertise and responsiveness. I would not hesitate to recommend Grant to anyone!!
  
 
      Posted on Google  
   
   Branko Pahanic 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grant was very prompt and  efficient. This was the third time in my life I did my will. It was totally the quickest and least complicated.

I strongly recommend Grant O'Shea Law.
Thank you from the bottom of my heart.
  
 
      Posted on Google  
   
   Ron Marciniak 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grant was recommended to us by our CIBC mortgage advisor and Grant proved to be the right person for the job. The sale of our home was a bit out of the ordinary but Grant handled it flawlessly. His friendly, professional, efficient and timely response throughout the process was great. We would not hesitate for 1 second to recommend him.
  
 
      Posted on Google  
   
   Ted Chamberlain 
 
 
 
 Trustindex verifies that the original source of the review is Google. Grant  did a very thorough job preparing my will and POA documents. He is polite and explains all facets of the procedure thoroughly and in  detail without being confusing .
He made what could have been an arduous task pleasant.
I would highly recommend his services.
  
 
  
  
 
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Get In Touch

1100 Burloak Drive
Suite 300
Burlington, ON L7L 6B2
T: 289-266-1642
F: 289-816-5001
info@koshlaw.ca