Welcome to O’Sullivan Legal, a dedicated family law firm supporting individuals and families across Sydney, Parramatta, and Melbourne. Our team assists clients from all backgrounds in navigating the legal and personal complexities of separation, divorce, and family law disputes, including property settlements and child custody matters.

Family law issues are often emotionally challenging and legally complex. Our goal is to help you reach a clear, practical, and sustainable outcome so you can finalise your separation and move forward with confidence.

If you are looking for a family lawyer for Sydney cases, our team is here to support you. Contact us for a consultation.

HOW WE CAN HELP YOU

THE BEST INTERESTS OF THE CHILD FIRST

PARENTING & CHILD CUSTODY MATTERS

Children are often the most affected when parents separate. Our team includes an experienced child custody lawyer help Sydney parents with guidance in reaching arrangements that prioritise a child’s safety, stability, and wellbeing.

We assist with negotiated parenting agreements, mediation, and court proceedings, working toward outcomes that protect children while supporting meaningful relationships with both parents.

WE ARE EXPERTS IN FAMILY LAW

DIVORCE

Our divorce lawyer that Sydney clients work with provides support throughout the divorce process, from assessing eligibility and preparing applications to managing service requirements and timelines.

We focus on simplifying the process wherever possible so you can finalise your divorce efficiently and begin the next chapter of your life.

WE STAND BY YOUR SIDE

PROPERTY SETTLEMENT

The division of property following separation can be complex, particularly where real estate, businesses or superannuation are involved. Our family law solicitors support Sydney families with clear, practical advice on asset pools, financial contributions, and future needs.

Through negotiation, mediation, or court proceedings, we aim to achieve fair and legally sound outcomes that support your long-term financial security.

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DE FACTO RELATIONSHIPS

De facto relationships can raise unique legal issues when they end. Our family lawyers regularly assist with matters involving separation under one roof, property settlements, and parenting arrangements.

We provide tailored advice to help you understand your rights and obligations under Australian family law.

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RELOCATION & INTERNATIONAL FAMILY LAW

In an increasingly globalised world, families may face complex relocation or international family law issues. Our team includes a trusted family court lawyer Sydney clients turn to when dealing with relocation applications, international parenting disputes, or cross-border property matters.

We provide informed, strategic advice aligned with both domestic and international legal frameworks.

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DOMESTIC VIOLENCE & APPREHENDED VIOLENCE ORDERS (AVOS)

Domestic violence and abuse can significantly affect family law matters. Our lawyers provide compassionate, confidential support to clients seeking protection, including advice on AVOs and related family law proceedings.

Your safety, and the safety of your children, is always treated as a priority.

We make things easy, efficient and worry-free.
Talk to us today.

OUR FAMILY LAW SERVICE

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Parenting Law
The paramount consideration is the best interests of the child.

To determine what is in a child’s best interests we turn to section 60CC of the Family Law Act and weigh and assess the factors listed there which include.

Property & Finances
Following separation when it comes to dividing up the family assets – the home, super, furniture, cars, the boat, shares, investment properties, etc.. clients describe the process to us in terms like ‘confusing’, ‘a hideous process’ and ‘daunting’.
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Divorce Lawyer
Being a result-driven and reputed law firm in Sydney, We have a huge number of authorized and experienced Divorce lawyers in Sydney.
Family Law for Dads
It can be heart breaking. It can be very challenging. It can be straightforward. In all cases, having a lawyer who will stand up and fight for your rights is vitally important.
Family Law For Mums
Family law for mums is often a period of high anxiety and stress. The worry of where the children will live, who will get what property, who will pay for what, can all appear daunting.
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Child Custody Lawyer
Following on from a divorce or relationship breakdown, the social science research indicates that it is very important to try and ensure the financial needs of a child are met and this can be achieved by putting a suitable arrangement in place.
Gay and Lesbian Divorce Lawyers
A same-sex marriage encounters all the same difficulties as a heterosexual one and a same-sex divorce lawyer at O’Sullivan Legal is ready to help you resolve your disputes the same way we have done for hundreds of traditional marriages.

OUR TEAM

Ben O’Sullivan Lawyer

Director

Michelle Chidiac

Associate

Heidi Garner

Solicitor

Celine Tchaptchet

Solicitor

Is it you?

We are hiring, please get in touch with us.

Protecting Your Future

Family law decisions can have long-term effects on your family relationships, finances, and personal wellbeing. We support clients in making informed decisions with clarity and confidence.

Our approach focuses on reducing conflict where possible, while ensuring your legal rights and future interests are properly protected.

Why Choose O’Sullivan Legal

Experience, Compassion & Results

Clients across Sydney CBD and Parramatta come to O’Sullivan Legal because we combine strong family law experience with a practical, client-focused approach.

Depth of Family Law Experience

Our team handles a wide range of family law matters, from straightforward separations to complex disputes involving children, property, and court proceedings.

Clear, Tailored Advice

We take the time to understand your circumstances and provide advice that reflects your priorities and long-term goals.

Efficient Resolution Where Possible

Where appropriate, we prioritise negotiation and mediation to resolve matters in a timely and cost-effective way.

Transparent Communication

We provide clear explanations of your options and outcomes, so you always know where you stand.

Trusted Local Representation

Many clients regard our team as among the best family lawyer Sydney residents choose when experience and outcomes matter.

Learn more about our services. We have offices in Sydney, Melbourne, and Parramatta.

Speak With a Family Lawyer in Sydney

If you are facing a family law issue, early advice can make a meaningful difference. O’Sullivan Legal offers confidential consultations for individuals and families seeking guidance from a best divorce lawyer Sydney locals trust.

Call (02) 8114 4511 to speak with our staff or submit an online enquiry to arrange a confidential consultation.

We make things easy, efficient, and worry-free.

Learn more about us and our areas of practise.

FAQs

What does a family lawyer do?

A family lawyer assists with divorce, parenting matters, child custody disputes, property settlements and financial agreements, providing legal advice and representation tailored to each client’s circumstances.

How can a divorce lawyer help during separation?

A divorce lawyer provides guidance throughout separation, including preparing applications, advising on timeframes and assisting with related parenting or property matters.

What is the benefit of hiring family law solicitors?

Engaging experienced family law solicitors means having professional representation in legally complex or emotionally charged matters, helping clients navigate negotiations and court processes with confidence.

Why is a property settlement lawyer important after divorce?

Property settlement advice helps ensure assets, liabilities and superannuation are divided fairly and in accordance with the law, reducing the risk of future disputes.

Can a prenuptial or binding financial agreement protect assets?

Yes. Financial agreements can clarify how assets are treated if a relationship ends, providing certainty and reducing the likelihood of later conflict.

BLOGS

DIVORCE

Divorce Settlement in Australia – Who Gets What?

Many separations become emotionally charged, especially when property and finances are involved...
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What to Do If a Mother Is Withholding Child from Father in Australia

If you're in the situation where a mother is withholding a child from a father...

How Property Settlement Works in Australia: The 4-Step Court Process

Dividing property is confronting. It involves finances, but also security, stability and future planning...

Divorce vs Annulment in Australia: What’s the Difference?

Divorce is not the only way to end a marriage. In Australia, there is another...
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Coercive Control and Family Law: What Australian Courts Consider

Separation is hard enough. When coercive control is part of the picture, the stakes get...

What Happens if Your Ex Won’t Follow Parenting Arrangements?

When parents separate, it is normal to experience conflict or uncertainty about how arrangements will...

What Is the Family Law Court Process in Melbourne?

When a family law dispute reaches court, the process can seem unfamiliar, emotionally charged and...

Reasonable Grounds To Refuse Mediation in Australia

Learn what an undertaking means in Australian family law, how it works, when it's used...

Client Reviews

CONTACT US

Let’s chat:

Please call our Case Manager on 02 8114 4511 or contact us using the below form:

Our Head Office

We make things easy, efficient and worry-free.
Talk to us today.

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