Mary Cassar

Property Advisor


To discuss your options with Mary Cassar

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The quality of our results stems from the importance we place on the people behind the properties.


Zoe is a very dedicated and professional when dealing with her tenants. She always get back to us as quickly as she can whenever we needed to settle something on regards with our tenancy. Even when we are moving out of the premises, she help us in everything. Thank you so much and we also had a good experienced with Obrein Real Estate Mentone.
Simply Me
Simply Me
05:26 21 May 21
Tiffany Gillard is one of the best rental managers I came across. Tiffany has listed and leased our property in Mentone in no time and she has been very pleasant to deal with throughout the past 8 months. Tiffany is always willing to assist and very responsive, even during weekends or after hours. She is dedicated to her work and will go above and beyond to attend to issues and requests to resolve any issue. Tiffany’s attention to detail and her communication skills are beyond expectations. I cannot speak highly enough of her and thank her for all her assistance.
Anna Siani
Anna Siani
09:55 17 May 21
One of the fabulous aspects about listing our home with OBrien's was that Mary Cassar, the agent, talked us through the steps is such a clear and concise manner. From listing our house, sorting out the conveyancing, staging, storage, the auction process, and then the sale; all of the steps were explained and the communication was outstanding. Mary was on top of everything. She knows the market, knows the area, and understands the needs of the vendor. We have recommended Mary and OBrien's to friends because the entire experience was highly professional, accomodating, and comfortable.
00:09 11 May 21
Zoe has been my property manager for the last few years and has been excellent to deal with. Polite, attentive & professional, making both moving in and moving out a seamless process.Well done Zoe and team, keep up the great work.
03:03 15 Apr 21
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Mary Cassar in the last year.

Obrien Real estate Mentone is proud to welcome to the team, the award winning, Mary Cassar!

Mary has over 25 years of real estate experience and has spent her whole professional career in a sales environment.

Mary offers a completely personalized, one on one service to her clients. She has an extensive network of people she deals with, and the majority of her clients are either referral or repeat business.

A vibrant and fantastic communicator, Mary is the lifeline that achieves great results for your property, as nothing is too much trouble. Mary will put her best foot forward to ensure that selling your home is smooth sailing.

Mary understands that selling your home is the largest financial decision you make. You want things to go smoothly and seamlessly and you want to trust that your best interest are being look after. With Mary that’s a given!

If you would like to have an informal discussion about your real estate plans, Mary is always up for a chat.

Years in the industry


Community involvement
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Our values and purpose.

Our purpose is to create a place where we can facilitate our people's growth. Our values are:

Our colleagues are our broader family, assist when needed and when in need.

Respect our colleagues and our clients as you would like to be respected.

Unlock your full potential, encourage and support your colleagues.

Strive for excellence; be open-minded and willing to embrace change.

Work towards being well balanced within yourself.

The OBrien difference.

30 offices with 1 in Cairns in Qld.

198 in sales & 55 in property management.

17,564 sales since founded in 2010.

Our Average Clearance Rate in 2020 is 82.5%.

Homes is $854,350 and Units is $601,500.

Industry leading results, with an average of 26 days.

Industry benchmark results with 1.5% vacancy.

We manage and serve over 8,250 properties.

Across our network we speak 36 different Languages.

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