O'Sullivan Legal

O'Sullivan Legal

Buying & Selling Property

BUYING & SELLING PROPERTY • CHILDREN & PARENTING
Sydney, NSW
12+ years Experience
4.8

Rating

6

Team

2013

Since

O’Sullivan Legal is a leading family law firm based in Sydney, Australia, with offices in Melbourne and Gold Coast. The firm specializes in guiding clients through the complexities of divorce,...

Call Now

What is O'Sullivan Legal?

O'Sullivan Legal is a leading specialist family law firm founded in 2014 that provides comprehensive legal services across Sydney, Melbourne, and the Gold Coast. With a dedicated team of 11-50 professionals, the firm specializes in navigating complex family law matters including divorce, child custody, property settlements, and domestic violence cases. O'Sullivan Legal distinguishes itself through its client-centered approach, combining compassionate support with clear communication to achieve the best possible outcomes for families during challenging transitions.

What services does O'Sullivan Legal offer?

  • Child Custody & Parenting Matters: Comprehensive representation in custody disputes, parenting arrangements, and complex matters involving risk issues, domestic violence, and international child abduction
  • Property Settlements: Expert guidance through property division including complex matters involving corporate structures and trust issues
  • Divorce & Separation: Full-service support for all types of divorce proceedings including same-sex divorce, with specialized programs for both mothers and fathers
  • Spousal Maintenance: Strategic advocacy for fair spousal support arrangements that protect clients' financial interests
  • Mediation Services: Alternative dispute resolution options to help families reach agreements outside of court, reducing conflict and costs
  • Prenuptial & Binding Financial Agreements: Proactive legal protection through carefully drafted agreements that safeguard assets and clarify financial arrangements
  • De Facto Relationship Matters: Specialized expertise in property and parenting issues for unmarried couples
  • Relocation & International Family Law: Complex cross-border family law matters including international relocations and Hague Convention cases
  • Domestic Violence & Restraining Orders: Urgent protective measures and ongoing support for victims of domestic violence
  • Wills & Estate Services: Family law-related estate planning services to protect family assets and ensure proper succession

Why choose O'Sullivan Legal as your lawyer?

O'Sullivan Legal stands out as Sydney's leading specialist family law firm through its commitment to excellence and tailored approach to each client's unique needs. The firm advocates for alternative dispute resolution methods like mediation and arbitration to minimize conflict, while maintaining readiness for litigation when necessary. Their team of certified professionals, including accredited mediators and collaborative lawyers, ensures clients receive efficient and worry-free services. O'Sullivan Legal's proven track record in handling difficult property settlements and child custody matters demonstrates their capability to navigate even the most complex family law challenges.

Who are the attorneys at O'Sullivan Legal?

The firm is led by Ben O'Sullivan, Director and Founder, who established the practice with a vision for client-centered family law services. Tom O'Sullivan serves as Special Counsel and brings expertise as an accredited mediator. Emma Youdale, Associate, holds multiple certifications including FDRP (Family Dispute Resolution Practitioner), Parenting Coordinator, and Collaborative Professional credentials. The team also includes Michelle Chidiac as Associate, Madeleine Geoghegan as Solicitor, and Shaun Chua as Legal Assistant, all working collaboratively to provide comprehensive family law support.

How much does O'Sullivan Legal cost?

O'Sullivan Legal offers transparent pricing structures tailored to the complexity of each family law matter. Initial consultations typically provide clarity on fee arrangements and payment options. The firm understands the financial stress that accompanies family law proceedings and works with clients to establish manageable payment terms that align with their circumstances.

Where is O'Sullivan Legal located?

O'Sullivan Legal maintains three convenient office locations across Australia to serve clients effectively. The head office is located at Suite 15, Level 2, 123 Clarence St, Sydney NSW 2000. Additional offices are situated at Suite 47, Level 27, 101 Collins Street, Melbourne Victoria 3000, and Level 13, 50 Cavill Avenue, Surfers Paradise QLD 4217. Clients can reach the firm at (02) 8114 4511 or contact the Case Manager at 02 8079 5200. Email inquiries can be directed to info@osullivanlegal.com.au. For more information, visit their website at https://www.osullivanlegal.com.au/.

Client Reviews

4.8

45 verified reviews

K Serrano

K Serrano

Verified Client
a week ago

24.03.25 Email to OSullivan 31.03.25 Followup-email 31.03.25 Acknowledgement from solicitor advising meeting with client “tomorrow” and reply to my original email would follow. 6/7/11/17 & 24.04 Emails to O’Sullivan requesting an update, acknowledgment and further information. 3/5/25 Email to O’Sullivan requesting acknowledgement and confirmation of whether they hold instruction. Unanswered. 5/5/25 2x phone calls, unable to speak to solicitors. Requested practice manager, was told no and hung up on. Phoned back, was assured the (Director) was emailing me “right now”. Wouldn’t provide directors name or contact details. Nothing received.

No subjective opinion. Facts are as stated. In my opinion, the above account demonstrates an unresponsive, unprofessional and misleading interaction.

Response to comment: Hi >Name retracted since being threaded with a defamation case, despite signing off with your full name and title in your reply<, First confirmation I’ve had that your firm still acts since April 17th despite being asked in 4 separate emails. Doesn’t change the facts contained in my review. Especially that your admin staff today advised that you were “literally emailing right now”. I look forward to receiving that email from you.

I also note that your reply has been significantly edited. In your prior reply, you gave context to the relationship between me and O’Sullivan where your current reply suggests there was no reasonable expectation of correspondence. * Please also note, I do have screen shots.

Sahar Mahdavi

Sahar Mahdavi

Verified Client
7 months ago

The O'Sullivan Legal was supportive and professional throughout my legal process. They truly cared and communicated clearly and explained every step of the way. Highly recommanded.

Anna Panacos

Anna Panacos

Verified Client
a year ago

My family law matter was handled exceptionally. As soon as Mary and Ben heard my story, they acted very very quickly. The results were outstanding. I cannot thank them enough for their dedication and hard work. They dealt with my matter at all times of the day, consisting of late nights and early hours of the morning. If I ever have another family law matter in the future, I will be coming back. They are dedicated, professional, committed and morally supportive to helping their clients get the best result.

Stassia P

Stassia P

Verified Client
a year ago

Throughout my family law matter regarding an AVO, Mary & Ben were outstanding and exceeded all my expectations. If you want the best outcome you come to this firm!!

Ahmed

Ahmed

Verified Client
a year ago

It was a case and a life changer to be with Ben O'Sullivan. I was with 3 lawyers before him and I was getting nowhere. A good friend gave me the best advice I have ever been given in my whole life to go with Ben and I am glad I did. With a long painful but necessary journey of not seeing your kids the way and the time you want to and fighting for their rights, you need someone on your side, that you know he can deliver and fight with you to last breath. And the outcome is more than what I hoped for when I started the litigation. Thanks to Ben and a very professional team with him especially Michelle Chidiac for their effort and guidance through out this long but necessary journey.

Neale Siebert

Neale Siebert

Verified Client
a year ago

Thank you to Roya Khatiz from O’Sullivan Legal who handled my property matter. Roya is an excellent lawyer who was professional, knowledgeable and dedicated throughout the process, going above and beyond expectation. Roya represented me in Court and negotiations with the other side, obtaining the best possible result. I highly recommend Roya Khatiz and Ben O'Sullivan from O’Sullivan Legal.

Christian Fielder

Christian Fielder

Verified Client
a year ago

Ben, Mary and Roya worked hard to assist and succeed in my legal matters representing me in both family law and criminal law. The osullivan legal team advised and supported me through all issues to achieve results better than expected during my divorce and subsequent allegations made against me. Even having my police criminal matter withdrawn and dismissed without charges prior to hearing. I put all my trust into the osullivan team and listened carefully to their advice and the result was a huge relief with outstanding value for the work completed. I highly recommend choosing osullivan legal services and the experience they have available to settle and succeed with outstanding results.

brant volner

brant volner

Verified Client
a year ago

I’d like to take the opportunity to thank you Ben O’Sullivan and your team for their professionalism and hard work

Rehana A

Rehana A

Verified Client
a year ago

I am thankful that I chose O'Sullivan Legal because of lawyer Roya Khatiz. Roya handled my family law matter from the beginning to the end, representing me in Court and at mediation, and resolved my matter on favourable terms. Roya is an intelligent and talented lawyer. She is knowledgeable, professional, hardworking and compassionate. I highly recommend Roya Khatiz to anyone who needs a lawyer to resolve their family law matter.

Sofie Zamanos

Sofie Zamanos

Verified Client
a year ago

I write to extend my sincerest thanks & gratitude to Sandra Banjamin & the team at O’Sullivan Legal. To say the road was rough is an understatement however, Sandra proved to be clearly intelligent and experienced in family law helping me to navigate around each an every obstacle. Her approach is not only honest & empathetic but also detailed & effective. Without doubt; always striving toward the best outcome for the client. If you are seeking professional & experienced representation, look no further than O’Sullivan Legal.

Alicia Maybury

Alicia Maybury

Verified Client
2 years ago

O'Sullivan Legal handled my family law matter about a year ago, both Ben and Anita worked on my case. I could not have been happier with the outcome and the treatment I received from their team. Words can not express how greatful I am for all of their hard work and willingness to help. Ben and Anita worked tirelessly on my case, but also worked with me and my unique circumstances including me needing to be out of state on court dates and requiring large amounts of information to get discussed via email and over the phone, as well as allowing me to pay in instalments. Ben and Anita were open and honest throughout the case even when it wasn't what I wanted to hear. Their professionalism, dedication and care made the legal process much easier. I could not recommend a better legal team than the one at O'Sullivan legal.

Zulu Stu

Zulu Stu

Verified Client
2 years ago

If you’re after a thorough legal firm to manage your family law I would not go further than O’Sullivan Lawyers. This firm stuck with me for the long haul and with the extreme difficulties that one experiences with family law matters you need this support and professionalism to stay focused. In the end it was teamwork that won the day. Thanks greatly for your assistance. SG

Sherry Rahimi

Sherry Rahimi

Verified Client
2 years ago

Many thanks to Ben , Sandra and O'Sullivan's legal team assisting me during the turbulent times and making it easy for me to achieve a result. Ben and Sandra tirelessly, professionally and compassionately helped me through the whole process.

Georgia Andersen

Georgia Andersen

Verified Client
2 years ago

None

Anne L

Anne L

Verified Client
2 years ago

At O'Sullivan Legal , Ben O' Sullivan and Anita Petrovic are very prompt, very good and professional ! I had a very difficult divorce case. We are all residing and working overseas although we are all Australian citizens. Other law firm had given up about my case. However, Ben and Anita are perseverance and fight till my case is finished and successful !

Joanne Wheeler

Joanne Wheeler

Verified Client
2 years ago

I met Ben O’Sullivan after an awful experience with another Law Firm. From our first meeting I knew I had found a knowledgeable, experienced and determined Lawyer to represent me through my divorce settlement. My ex husband argued every point and even appealed the decision of the Court but Ben and his team did an amazing job fighting for me to secure a fantastic result for my children and I. I honestly cannot recommend Ben O’Sullivan Legal enough.

allen sephiroth

allen sephiroth

Verified Client
2 years ago

I highly recommend. Fast response, patient, professional, good understanding with client situation. Ben is easy going and well knowledge person, we build rapport very quickly and explore all the possible outcomes in the very beginning which is important for everyone i believe. Emma is highly passionate of her work, communication is efficient and accurate. Very happy to choose O'Sullivan legal for my matter.

Chris Weaver

Chris Weaver

Verified Client
2 years ago

A massive thank you to Roya Khatiz from O'Sullivan legal. I can't express my appreciation enough for her hard work. Roya personally invested herself in my case, spending long hours and a lot of dedication. She always got back to me with answers to my questions with helpful advice. I felt as though she had my back through the whole process. That was very important to me. Thank you again Roya.

K C

K C

Verified Client
2 years ago

I'm forever grateful for the help and support I received from Ben, Sandra and the team at O'Sullivan Legal.

I found myself in a divorce situation and my primary focus was towards my kids. Ben and Sandra's expert knowledge in navigating family law helped ease my anxiety by providing clarity to the process, which lifted a load off my shoulders. From my first session with Ben, I knew I had someone in my corner, looking out for my and my kids' best interests. Ben and Sandra were able to articulate steps and milestones in a simple to understand manner and they supported me at decision points with clear and timely guidance.

In a highly stressful situation, I found Ben and Sandra to be quite calming. I would highly recommend O'Sullivan Legal.

Jade Battisti

Jade Battisti

Verified Client
2 years ago

I couldn't recommend O'Sullivan Legal enough. They went over and beyond my expectations of a Law Firm and achieved results for me re my family and property settlement matters that I could not be happier with. They are so hard working, kind, humble and their costs were minimal for the amount of work that they put in. I would not have received the outcome that I did, going anywhere else (I changed from a previous Law firm to O'Sullivan Legal as I was not getting any results, and I am so glad that I did). A big thank you to my Solicitors Anita and Ben for all of their work and getting exactly what I wanted and needed, even exceeding what I wanted. I highly reccomend the firm to anyone. Thanks very much again.

sam sambo

sam sambo

Verified Client
3 years ago

I went through a worse settlement and endured emotional and financial distress. It was the most challenging time in my life. Ben's advice was, "hang in there and (keep your chin up). Ben got me through to the end, and I highly recommend Ben.

Rosalyn Corton

Rosalyn Corton

Verified Client
3 years ago

My experience was exceptional, everything was explained and resolved as quick as possible - only delay was the other side. Changed lawyers to O’Sullivan legal, they caught up with where my case was at and set the ball in motion to get the matter resolved. Stuck to their estimated timeframe and costing estimates. Would highly recommend them for any legal matter, thanks for the assistance in my matter

Snoopy The One

Snoopy The One

Verified Client
3 years ago

If your former partner has decided to take you for a ride put O’Sullivan Legal in the driver seat.

No challenge to big and be assured by getting value for the money which has to be spend for the legal efforts to avoid losing more of it to someone you don’t like anymore.

Thank you very much for making the legal process for a settlement an experience of enlightenment, the professional team around Ben O’Sullivan has managed to achieve an incredible positive result.

Highly recommended,

U.S.

Perry Salam

Perry Salam

Verified Client
3 years ago

None

Shane

Shane

Verified Client
3 years ago

None

Rhys Edwards

Rhys Edwards

Verified Client
3 years ago

Wow! Ben and his team are excellent. Family Law is not only emotional for the families involved by Bens team also carry that weight on their shoulders too. For approx 4yrs, Ben and his team were by my side. Thanks to them, I now get share many wonderful moments with my daughter creating the long lasting, life time memories.

Outstanding service and I highly recommend.

Cheers Ben

Yamur Sadiqi

Yamur Sadiqi

Verified Client
3 years ago

None

Edwin Ursua

Edwin Ursua

Verified Client
4 years ago

Having transferred from another firm, there is always some apprehension on starting a relationship with a new one however; right away O'Sullivan Legal took ownership and help manage issues that were already in train and made me feel supported from day one. 3 years later, they have worked so hard to address my every concern in a practical, understanding and caring manner as well as help me navigate in circumstances that at times became very difficult to manage. They have demonstrated their assessment of the correct approach is critical (even when the approach may be against what you feel the approach should be) and gets results. If you're looking for a firm that builds a genuine relationship which will tell you the hard facts, best options and gets the best outcome, here they are. I cannot thank them enough.

Mitchell Noble

Mitchell Noble

Verified Client
4 years ago

Ben, Sandra and Shaun worked on my separation last year, and I found them to be very calm, rational, clear and prompt. They were able to guide me through the process with minimal pain and cost. I would definitely recommend their services to anyone going through separation and divorce, you'll be in good hands here.

Craig and Laura F

Craig and Laura F

Verified Client
4 years ago

There is never a good outcome when you have to involve lawyers, but without a doubt, Ben and his team (notably Polina, Shaun, Anita and Sandra) have proven themselves incredible at what they do. They have been beyond understanding of a very difficult situation (as every child custody case is), but have been unbelievably empathic as well. The incredibly level-headed suggestions by Ben took the high emotions out of the situation and focussed on the points that mattered most to us. Our case is still ongoing, but regardless of the outcome, we know there is someone in our corner who is not just out for the dollars but wants the best result for our daughter.

Tom Byrne

Tom Byrne

Verified Client
5 years ago

None

Leif Erik Jensen

Leif Erik Jensen

Verified Client
5 years ago

I can 100% recommend Ben and his team to anyone who is looking for help with family law matter. Ben helped with my divorce case that spanned several years and was more or less stuck when he took over the case. I live overseas but throughout the process, I had good, honest and prompt communication through emails and phone with Ben and Sandra. Thank you very much for your efforts, there is no doubt that the fine end result could not have been achieved without you and your team.

Marco Min

Marco Min

Verified Client
5 years ago

Thank you Tom & Ben for the great result. I really appreciated your work and perseverance on my matter. I'm truly grateful.

133 AV

133 AV

Verified Client
5 years ago

Ben and his associates have been wonderful over the last 4 years. Achieving an outcome I was previously told impossible, Ben more than proved I was right to switch to his capable hands.

I encourage anyone, who knows they are right in what they are fighting for, to not give up no matter how dark it may seem, Ben will guide you to the light at the end of the tunnel. Under Ben's guidance and mentor-ship my own faith in the legal system has been restored and my son's future has been secured.

Antoinette, Sandra and Anita I would like to reserve praise for you also, thank you for your many hours spent changing applications and affidavits!

Team up with O'Sullivan Legal I 100% recommend it.

Suzy Bao

Suzy Bao

Verified Client
5 years ago

Never called back

Sarah Potter

Sarah Potter

Verified Client
5 years ago

Ben is the best of the best. He achieved my desired outcome at a very reasonable cost and throughout the whole process impressed me with his commercial attitude, thorough understanding of the law and professional manner. I would highly recommend him to anyone who is looking for help with family law matters.

Omar ELNAWSRA

Omar ELNAWSRA

Verified Client
6 years ago

Highly recommend them. Ben handled my divorce with good outcome. He helped with custody of my son. Ben is thoughtful and efficient and got on board quickly. Defiantly 5/5

Bill Hill

Bill Hill

Verified Client
6 years ago

Subject: Redemption

The O'Sullivan firm has stepped up its legal business. The acquisition of David Mewett now represents a dual headed legal team that is virtually unbeatable. Squashed, dismissed all allegations with the knowledge of family law exhibition . The professionalism was second to none. The will thought out approach was inexplicable. This team , this " Duo " ; have our deepest respect !

The Hill , clan Vaucluse, Eastern suburbs September 2018

Pieter Coetzee

Pieter Coetzee

Verified Client
6 years ago

I can 100% recommend (Ben) O'Sulivan Lawyers.

Ben has just helped me won equal share to my kids after a 3 year court case (orders received on 08/08/2018) ; I've done some research when my mess started, found Ben and now after 3 years and a splendid result I am very happy with with my choice of family lawyer.

Ben is very knowledgeable, calm, methodical and took a lot of the frustration and stress out of my hands throughout the case. I am crying about my legal bills however, in retrospect of my case, I know now Ben was also good value for my money by keeping his time spent on me to the minimum to achieve the legal goal and every minute accounted for.

He is empathetic, personable and highly professional in his conduct and output. If you need a good/ solid/ cheap lawyer (which will leave you money for a good barrister), I can definitely recommend Ben.

He is an excellent navigator and skipper through a family legal storm.

Pieter

Janette Batley

Janette Batley

Verified Client
8 years ago

None

Moira Davies

Moira Davies

Verified Client
8 years ago

I highly recommend this Firm's services. Ben was wonderful. Thoughtful and efficient and got on board quickly. Very sharp man. For the Ladies or boys he is very good-looking (my friends words not mine)! Outstanding service and kind.

Lucy Perry

Lucy Perry

Verified Client
9 years ago

None

Kevin Doh

Kevin Doh

Verified Client
9 years ago

None

Ashley Engels

Ashley Engels

Verified Client
9 years ago

I used this family law solicitor firm 3 times and they always helped me with my court cases in Sydney. They have affordable prices and friendly lawyers.

Adam Kowal

Adam Kowal

Verified Client
9 years ago

Family Lawyers in Sydney really helped me! I used their services 2 times. Once for my family issues and the second time for a criminal matter. I asked them for help for my son. He almost got sentenced to jail, but the firm helped me with the court case. They are easy to deal with and a reliable.

Contact Information

O'Sullivan Legal

Suite 15, Level 2/123 Clarence St, Sydney NSW 2000

Sydney NSW

Phone

+61281144511

Office Hours

Mon-Fri 9:00am - 5:00pm

By appointment available

Languages

English

Payment Methods

Cash, Card, EFTPOS

Payment plans available

Client Ratings

4.8

Based on 45 reviews

5 star
75%
4 star
20%
3 star
4%
2 star
1%
1 star
0%
Need Legal Assistance?

Contact O'Sullivan Legal for expert legal advice and representation.

Write a Review

Book a Consultation

Send a Message

Thank you! Your review has been submitted.
Consultation request sent! We will contact you soon.
Message sent successfully!
Link copied to clipboard!