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!


Equal Shared Parental Responsibility – a Misunderstood Concept in Family Law

By Margie O’Neill 2 October 2019 The Family Law Act refers to parents having ‘parental responsibility’ for the child of the relationship and the Court may make an order for parental responsibility to be ‘equal’ (shared by both parents) or ‘sole’ (exercised by one parent). Equal shared parental responsibility is not parents having equal time […]

5 Tips to help you through a separation

Going through separation and divorce can be one of the most painful and distressing times that you have experienced, regardless of whether or not you initiated the separation. Here are a few tips to help make your life a little bit easier whilst going through this difficult period. Try to relax and look after yourself […]

Court or Collaborative practice?

When considering how to resolve your Family Law dispute, many people think court is the only option. Little is known about Collaborative Practice but it is a widely used alternative way to resolve your Family Law matter. A court case recently reported in the media shows the downside of being caught up in the court […]


  • The Law sociaty of NSW
  • Doyles - Family Law 2020
  • Family Law Section - Law Council of Australia - Member 2019/2020
  • 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