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.

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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I've been in my new rental for 3 months now and could not be happier with the service I have had. Zoe is the property manager of my rental and she is always so prompt with her responses, makes sure she's keeping you informed on where things are at, and does all of this with such an approachable and personable manner. Thank you O'Brien and Zoe!
Danielle Archibald
Danielle Archibald
11:57 01 Oct 21
Damien and Tania provided excellent service during the process of leasing our property. Being first time landlords, their knowledge of the rental market was invaluable and their assistance from taking photos to tenant selection was first class.
Matthew S
Matthew S
03:09 01 Oct 21
Can not speak highly enough!Leased my property in less than a week during COVID lockdown.Professional, friendly & readily available.Thank you Damien, Tania, Amie & the team :)
Stephanie G
Stephanie G
06:27 27 Sep 21
I've had the absolute pleasure of working with Damien Sienkiewicz and Tania Souki at O'Brien Mentone to lease my property in Cheltenham.Right from the start, Damien responded to every question so quickly and with such a reassuring and professional manner, I had no doubt I would be in good hands.Listing my property during Stage 4 lockdowns I was prepared for it to be difficult, but with Damien and Tania on the job, it was actually seamless.Tania is so personable, professional, understanding and thoughtful. She literally took all of the stress out of this process for me while also keeping me informed every step of the way.It's evident both Damien and Tania love the work they do as they're completely dedicated and work tirelessly to take great care of their clients.Such a friendly, professional, engaging and supportive team, I highly recommend their services!And to top it all off, Tania had our apartment leased within a week of it being on the market!What a brilliant team!
Jess Mohi
Jess Mohi
05:39 27 Sep 21
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Mary Cassar in the last year.

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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.

36 offices with 1 in Cairns in Qld.

235 in sales & 82 in property management.

22,558 sales since founded in 2010.

Our Average Clearance Rate in 2022 is 91%.

Homes is $932,500 and Units is $630,500.

Industry leading results, with an average of 24 days.

Industry benchmark results with 1.3% vacancy.

We manage and serve over 12,612 properties.

Across our network we speak 36 different Languages.

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