We are a boutique Adelaide law firm specialising in criminal, traffic and family law.

Our experience, hard work and strategic thinking ensure that our clients receive the best possible outcome given their circumstances. Our service is individually catered to each client’s specific needs so that we can achieve the desired outcome for each and every one of our clients.

We believe that our clients are best served by being given honest legal advice. This means that we will always keep you fully informed regarding the progress of your matter and the strength of the case against you, and will provide you with easy to understand advice about the best course of action to take during each step of the proceedings. We are proactive and will communicate with you regularly to ensure that you feel comfortable with the progress of your matter.

We strive to provide a service which is value for money. Our aim is always to achieve the best possible outcome for the client, but we will do this in the quickest and most cost efficient manner to minimise your financial expenditure. We will provide you with a realistic estimate of costs and will never exceed that estimate without first obtaining your instructions to do so.


If you have been charged with a criminal offence, in most circumstances, you should be represented by a barrister or solicitor. Unless you have significant experience with our courts, the criminal justice system is likely to be very confusing for you. You have a lot at stake and if you choose to represent yourself you may make decisions which negatively impact on the outcome which can be achieved. This applies equally to minor charges, such as theft, where a criminal conviction can have a significant impact on your future employment opportunities, and more serious charges, such as drug offences, where there is a very real risk of imprisonment.

We have experience representing defendants in all types of criminal matters in all courts in South Australia. Our services are catered to each client’s individual needs. Depending on the outcome you ask us to achieve, we may take one or more of the following steps on your behalf: negotiate with prosecution to withdraw your charges; negotiate with prosecution to downgrade the current charges to less serious charges, which in turn will result in a less serious penalty being imposed by the Court; make submissions to the Court that there is insufficient evidence for the charges to proceed; cross-examine prosecution witnesses before there is even a trial; make submissions before a Magistrate  or Judge to minimise the penalty which will be imposed, and in appropriate cases ask that no conviction be recorded; and/or defend your charges at trial. We recommend that you make a no obligation free appointment to meet with us so that we can advise you about how best to deal with the circumstances you have found yourself in, and so that we can provide you with a realistic estimate of the costs you are likely to incur if you choose to be represented by a barrister or solicitor.


McMahon & Co can assist you with all traffic law matters, including: appeals to have your licence reinstated if you have been disqualified from driving; applications to reduce the number of demerit points which will be imposed for an expiation notice offence (in order to prevent a drivers licence disqualification being imposed); applications to set aside an instant loss of your drivers licence which was imposed for a drink driving or speeding offence; personal  injury claims arising out of motor vehicle accidents; property damage claims arising out of motor vehicle accidents; and/or charges associated with driving offences.

Most traffic matters have time limits applicable and it is important that you seek legal advice as soon as possible and before paying any fines or penalties. You will not always need legal representation in respect of your traffic matter, but you should always obtain legal advice regarding the options available to you and the consequences of any action you are intending to take. We are happy to provide you with prompt, free advice regarding your options in these matters.


The need to instruct a barrister or solicitor in respect of a family law matter means that you are likely to be experiencing an upheaval in your personal life. Whether your matter relates to property issues, your children, or both, we are here to help you navigate the court system and minimise the distress the legal process can cause.

Our aim is always to achieve the best possible outcome for our clients, in the most time and cost efficient manner. We will listen to you, ascertain the resolution you are hoping for and work with you to achieve that goal as quickly as possible.

Given the personal nature of family law matters, we understand it is important for you to feel comfortable with whichever barrister or solicitor you instruct to assist you. We understand this may mean meeting with a number of lawyers before you make a choice about which lawyer will be right for you. We are happy to meet with you for a no obligation free consultation so that you can assess whether or not you would be comfortable working with us to achieve your desired outcome.


Phone 8312 6100
Fax No Fax
Email admin@mcmahonandco.com.au