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Legal Advice
in plain English

Seeking legal advice when charged with a criminal offence

Being charged with a criminal offence is an extremely anxious and daunting experience that can dramatically impact your life and your...

Salvation Army Wills Day – Petherick Cottrell Lawyers

On the 28th of October 2021, the Salvation Army Mandurah has organised a Community Wills Day, providing people with the opportunity to...

Collaborating with you!

Mandurah now has a team of collaborative lawyers trained to resolve family law disputes in a respectful and dignified way, without...

Petherick Cottrell advises local business owners on sale of shares to ASX-listed company

Petherick Cottrell Lawyers is delighted to have assisted the founders of Orbis Mining Pty Ltd (Orbis) on the sale of 50% of the shares in...

"It is our core belief that we are driven
by shared success, and not by fees".

Trent Petherick Lawyers Mandurah

Mandurah based
local lawyers

Petherick Cottrell is a Mandurah based law firm of experienced, proficient and friendly lawyers committed to servicing your individual and business legal needs. The firm prides itself in using clear and simple terms to advise and address legal issues. This approach is aimed at reducing complexity and providing the most beneficial and cost effective solution to clients.

Employment & OHS Law

Specialist employment lawyers with experience assisting both employers and employees in the handling of industrial relations and employment matters.

Family & Divorce Law

Our family law team bring over 25 years’ experience in assisting clients in all areas of family law including; divorce, property settlement, children's issues and support.

Criminal Law

Passionate and tenacious in advancing client’s interests with high acquittal rates bears testimony to our total commitment to our clients.

Wills, Estates & Probate

We offer competitive rates on advising, drafting and executing Wills. We can also assist with advice in relation to trusts and power of attorney matters.

Commercial & Property Law

Legal advice and preparation, representation in contract disputes, commercial advice and litigation, dispute resolution, assistance in insolvency / liquidations.

Civil & Litigation

Civil law grants to individuals the right to sue for compensation or for specific action in matters such as breach of contract, defamation and negligence.

Take a closer look

The Petherick Cottrell team believes that the best advertisement is a highly satisfied client. We encourage you to consult with those that have used our Mandurah based services or consider our client testimonials. We pride ourselves with developing long term professional relationships with our clients.

Here for you, when
you need us most


60 Pinjarra Rd Mandurah 6210


08 9535 4604


08 9535 4603

Law Services

Alex Mulcahy

Petherick Cottrell has my highest recommendations on every level from professionalism to support and education surrounding legal matters, I can't thank them enough. With the help of Trent Petherick even the little guy can win!

Jessica Wilson

We needed a caveat removed and when we called Pethrick Cottrell Lawyers, they were able to fit us in within a days notice to get the removal done asap! We are very pleased with the service and very prompt service. Thank you Ronnie & Joe for assisting us!

Hossam Hassan

Trent represented me recently and we had found him to be very confident and honest. Trent showed great professionalism and experience and gone above and beyond my expectations - i am extremely happy with the results and the outcome was better than I had hoped!

Jeff Mitting

I had an issue that the lawyers from this firm, Jodie and Trent, were able to resolve successfully for me in good time. It was a time sensitive issue and I found their services professional and well presented at all times. Well worth the investment in successfully prosecuting my case.

Julie Gardner

After a very long period of 4 years, Rex, Claire and James did everything in their power to get the great result in the end. Much appreciated with your professionalism, friendly service along with good advice. Thank you would recommend to anyone!!!

Kim Ellement

My husband and I recently had our wills drawn up through Petherick Cottrell Lawyers. They were very professional and explained everything to us.  Staff are very friendly & knowledgeable.  Would highly recommend them to anyone.

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