About Us

De Saxe O’Neill is a local Northern Beaches family law firm who are here to help and support you as you go through separation and divorce.

Unlike traditional firms, we offer a private and supportive space to discuss how we can address your particular needs. We use family friendly processes where required and will also talk to your former partner or their lawyer if needed. If you need tough representation in court we will be there with you, but our first choice is to use alternative methods and engage other professionals such as mediators, financial advisors and counsellors to assist you and your family to get through this difficult time.

Areas of Practice

Family Law

A relationship break-down is a tough time for all involved, so having an experienced expert in family law on your side can be a big help.

Elder law

Our Elder Law Services provide personal, specialised legal advice to help older people and their loved ones through important decisions such as wills, living arrangements and care.

Collaborative Law

A collaborative process can be a win-win for those who want to avoid court and have constructive interaction going forward. A good collaborative lawyer in these negotiations with you.

Mediation and FDR

If you are unable to reach agreement about your children’s care arrangements, the Family Law Act requires parents to make a genuine effort to try to resolve their conflict through family dispute resolution (FDR), before filing an application for parenting orders in court.

Our Team

Janine De Saxe – Director

Janine is a highly experienced family lawyer, having practised in all aspects of  Family Law for over 30 years. Janine places great importance on keeping families out of court.

Margie O’Neill – Director

Margie is experienced in all areas of family law including parenting, property settlements, Hague Convention matters, relocation and recovery applications, same-sex and defacto matters.

Margie and Janine helped solve a legal matter for me, they were amazing from start to finish – empathetic, efficient and clear. I could not recommend them more!


Top tips for navigating Mother’s Day as separated or divorced parents

One of the most difficult decisions parents face during a separation or after divorce is working out family days such as Mother’s Day, Father’s Day and birthdays. As this Sunday is Mother’s Day, we wanted to share a couple of our tips to help make the day as enjoyable for mum and the children as […]

Consideration of the ‘best interests of the child’ must go beyond the Court System

The Australian family law system is built on the foundation that the Court must take into consideration ‘the best interests of the child’ when making any decisions regarding children. Whilst such considerations are vital when providing Court orders to be adhered to by parents with respect to parenting arrangements, it is equally important for parents […]

Beware the perils of self-representation

Some years back Brad and Jane separated.  There were two very young children of the marriage.  Jane had been the primary carer, while Brad assumed the role of financial provider.  When the couple parted, they did so amicably.  They managed to organise time with the children and their day-to-day finances informally.  Jane stayed in the […]


  • The Law sociaty of NSW
  • Doyles - Family Law 2020
  • Doyles - Family Law 2022
  • Family Law Section - Law Council of Australia - Member 2021/2022
  • Collaborative Professionals (NSW) inc

Contact Us

‘Bakery Mews’ Suite 6,
67 Wanganella Street, Balgowlah NSW 2093
Phone: 02 9948 3820
Email: reception@dofamilylawyers.com.au