Margie O'Neill
Margie O'Neill cover
Margie O'Neill

Margie O'Neill

Director De Saxe O’Neill Family Lawyers

location
Balgowlah, NSW
Click to Reveal Phone Number(02) 994..
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About Margie

Margie O’Neill brings extensive experience across all facets of Family Law, including parenting arrangements, property settlements, Hague Convention cases, and matters involving same-sex relationships. Recognised over several years by Doyle’s Guide as a leading Parenting Family Lawyer in Sydney, Margie is known for her empathetic yet practical approach to resolving family disputes. Clients appreciate her sensitivity to the emotional difficulties that arise during separation and divorce, alongside her commitment to minimising the impact of conflict on both parents and children. Drawing on her background as a social worker, Margie combines her legal expertise with a unique understanding of family dynamics to support clients through challenging circumstances. As a mother of three, she emphasises the importance of parents working collaboratively for the well-being of their children and maintaining respectful communication, even in difficult situations. Margie holds a Master of Laws in dispute resolution and is trained in both Collaborative Law and Mediation. While she prioritises resolving matters outside of court, she is equally adept at representing clients in litigation when required. Beyond her practice, Margie contributes actively to her community. She serves as a board member of the Northern Beaches Women’s Shelter and as co-Vice President of the Board of NSW Collaborative Professionals. Margie volunteers at Manly Community Legal Centre and is a member of the Northern Beaches and Suburbs Collaborative Practice Group as well as the Family Law Section of the Law Council of Australia. When not practising law, Margie enjoys an active lifestyle with her family and two dogs. A lifelong resident of Manly, she has a passion for skiing and scuba diving and remains rooted in the local community.

Practice Areas

Family Law
Litigation & Disputes

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Resume

Experience

Member Board of Directors
Member Board of Directors
Northern Beaches Womens Shelter
Aug 2024 - Present · 1 year
Volunteer Lawyer
Volunteer Lawyer
Manly Community Legal Advice Service
Feb 2020 - Present · 5 years 6 months
Member Board of Directors Co Vice President
Member Board of Directors Co Vice President
NSW Collaborative Professionals Board
Oct 2019 - Present · 5 years 10 months
Director - Accredited Specialist Family Law
Director - Accredited Specialist Family Law
De Saxe O'Neill Family Lawyers
Apr 2018 - Present · 7 years 4 months
Family Lawyer
Family Lawyer
Doolan Callaghan
Jan 2015 - Jan 2018 · 3 years
Social Worker
Social Worker
Various including child protection, disability and aged care
Dec 1989 - Dec 2010 · 21 years

Education

Doctor of Law (JD)
Doctor of Law (JD)
University of Technology Sydney
1970
Bachelor of Social Work
Bachelor of Social Work
UNSW
1970
Accredited Specialist, Family Law
Accredited Specialist, Family Law
Law Society of New South Wales
2021
Master of Laws (Dispute Resolution)
Master of Laws (Dispute Resolution)
University of Technology Sydney
2015 - 2017

Contact Information

Balgowlah, NSW

LocationSuite 6, 67 Wanganella Street, Balgowlah, NSW
Click to Reveal Phone Number(02) 994..

Practice Certificate

Name
Margaret Alison O'Neill
Date of Admission
2015
Specialisations
Family Law
Certification type
Principal of a law practice
Class
Law Practice
Region
NORTHERN BEACHES
CheckLast checked: 28 Jul 2025
Checked with the The Law Society of NSW

Practice Categories

Family Law