Helping you is our practice


Since 1983, M Duncan & Associates have been trusted legal advisors to our many clients. We are an old-fashioned firm: we value providing good service to our clients while delivering timely and accurate legal advice.

At M Duncan & Associates we know that each client’s matter, whether large or small, is significant for that client. Every client deserves capable representation and assistance to help resolve their problem. We are committed to providing that assistance, which is why so many of our clients return to us for all their legal needs.

M Duncan & Associates is an inner city Sydney law firm based at Surry Hills on the edge of Sydney’s CBD close to all Courts and government offices.

Call us today to discuss your legal needs.

Helping You Is Our Practice!

What Our Clients Say

Marieann and Guy Duncan from M Duncan & Associates have been my one stop shop in all legal matters over the past 30 years. All matters I have engaged them in have led to timely and consistently successful outcomes. Importantly their costing is transparent, fair and reasonable.

I have developed complete trust in the advice and services this small business provides, be it in relation to buying and selling property, family law or spouse visa issues. Wherever I am, I know that Marieann and Guy are just a phone call or email away. I feel completely supported by them and know that whatever legal issues I may face I am safe in the good hands of these sharp and extremely competent advocates.

Doerthe Jansen

I was referred to Marieann through a lawyer I knew overseas. I am so grateful for all the support Marieann gave me. She successfully defended family law proceedings.

Marieann helped me not just professionally, but also emotionally by encouraging me to stay focused on what mattered and not let my anxiety overwhelm me. By following this advice, I achieved a successful outcome. I would strongly recommend Marieann to anyone needing a family lawyer.

Nicole Xavier

About 10 years ago when living in Surry Hills I needed a lawyer when I wanted to investigate buying a property and one of my friends recommended me the firm of M Duncan & Associates. Guy Duncan has acted for me in several different legal matters including buying property, will drafting and establishing a family trust. I find him friendly and he always explains the legal issues to me, so I am able to understand quite easily.

Crystal Liu

I have conducted a small business in Surry Hills for more than 25 years and during that time I have come to know the team at M Duncan & Associates very well. I have found them to be friendly and helpful whenever I have contacted them for legal advice or assistance.

As a small business owner, I appreciate the service and am happy to recommend them as being reliable, competent and trustworthy.

Frank Hwang, Hwang Enterprises P/L

I first engaged the legal services of Guy Duncan in relation to advice on business contracts and found him helpful and informative. I have used the legal services of Guy Duncan on several occasions thereafter in relation to property and business contracts as well as personal legal matters.

He always responds promptly when contacted in a friendly manner. I find him reliable, competent, trustworthy, and very thorough. I can recommend him and his firm based on my dealings with him over many years.

John Wakefield

I have known Marieann Duncan for more than 20 years from the time she first acted for me in a Supreme Court litigation matter many years ago. Since then she has acted for me in a variety of legal matters including a family law financial settlement and also in   general property and estate planning transactions.

Marieann has always given her full attention to the smallest issue, I wholeheartedly recommend M.Duncan & Associates to anyone. They do an amazing job and I am very glad that they have acted for me.

Eva Molnar

For many years I have used the services provided by Marieann Duncan at M Duncan & Associates for Notarial Certification and Apostille Authentication of documents required for international business including copyright registration and execution of legal contracts.

Marieann attends to all necessary requirements in an efficient and reliable manner including communications with DFAT as required to apply for an Apostille or Authentication for use in an overseas jurisdiction. I have no hesitation recommending the notarial services offered by Marieann through her firm M Duncan & Associates.

Adrian Crouch, Director Wilcom Pty Ltd

M Duncan & Associates have assisted me and various family members over the last couple of years in legal matters. I have found the firm approachable and very experienced in their work, both friendly and patient, especially when dealing with elderly clients.

If I have a legal query, I do not have to worry because I know I can obtain reliable legal advice from M Duncan & Associates.

Kerry O’Neill

I feel so grateful that I met Marieann Duncan, who helped me so much with my painful family law separation and final settlement. 

Livia (Last name withheld)

I first met Marieann Duncan more than 10 years ago, when she was assisting members of an unincorporated association in relation to a difficult internal dispute which had arisen.

I was impressed at the manner in which Marieann dealt with them respectfully and then took action to negotiate and resolve the dispute.  From that time, I have used the team at M Duncan & Associates for my own personal, business and family matters. I have recommended them to family and friends.

Eden Wong

Marieann Duncan examined the ‘fine print’ in a contract matter, then resolved the dispute very promptly to my advantage saving me considerable worry and cost.  I found her pleasant to deal with, so when buying a home unit, it was an easy decision to ask M Duncan & Associates to assist me and my partner. On this occasion Guy Duncan acted for us and I found he was informative and made it easy to understand and deal with the transaction. 

I have been happy with all the help and straightforward, practical advice I received from the team at M Duncan & Associates from time to time and have confidently referred friends to them.

Bianca Madon

Marieann Duncan has helped me with a couple of legal matters including my divorce, which had a few ‘out of the ordinary’ difficulties, but she sorted it all out and my divorce went through successfully which was a great relief. 

P Hardman

I have had the great pleasure of knowing Jareth Norman at M Duncan & Associates for several years. The employment contract advice he gave me was accurate and easy to understand. I would recommend M Duncan & Associates without hesitation to anyone looking for experts with an astute commercial mindset.

Rowan McLeod

I contacted Jareth Norman of M Duncan & Associates to explain some aspects of my employment contract. I read and understood his advice – it was thorough, answered all my questions, and gave me so much clarity on the more complicated parts of my contract.

I really appreciated his input and would recommend anyone presented with complex documents that might be a bit unclear, to contact Jareth for legal advice before they accept the document by signing it.

Danielle Nicolaides

I have known the team at M Duncan & Associates for many years. I originally encountered them when I leased my business premises in Surry Hills. Over the years the firm has acted for me in my and business matters with lease and general contracts and advice and I have engaged them on personal matters.

They have always been friendly and understanding and have given me prompt, reliable and competent assistance. I can highly recommend M Duncan & Associates to anyone needing legal assistance.

Cameron-Jane Thomas, Director and Principal Cameron Jane Makeup Design P/L

Ten years after M Duncan & Associates acted on my property purchase, I contacted them for help with a strata dispute. I received advice and it solved my problem completely within 24 hours of my phone call.

Leanne Mulligan