Hi, I'm Ouwens Casserly

Let's make it happen.

Sales & Property Management at Ouwens Casserly in Bli Bli

Since it was established by Alex Ouwens and Nathan Casserly in 2014, OC has sold more than $3 billion in property and now employs a team of more than 100 passionate property professionals. We have a large network of independently owned real estate offices in South Australia, which gives our sellers the edge in accessing the largest cross-council customer base in SA, and gives buyers the choice and variety they need to find their perfect home.

Our vision is to be the most trusted and well-respected agency in SA. We're thrilled our net promoter score shows we currently sit at the top of the industry in this measure, but we will never rest on our laurels and will strive to do the best for the South Australian community.

Alex Ouwens was the President of the Real Estate Institute of SA for 3 years and Nathan Casserly is a well-regarded keynote speaker at Australia’s largest conferences. Alex and Nathan also love helping the community by leading some auctioneering fun at fundraising events such as The Crows Gala Ball.

OC sells more than 1000 homes per year and manages more than 1600 rental properties, we help more than 5000 people each year transact real estate throughout the metropolitan area.
  • Very well! Would recommend him to anyone.

    Seller of house in Fulham Gardens, SA

  • Mladen is really down to earth agent. You can ask him any question and he will put you at ease with his answer as he is very knowledgeable about everything. He sort of becomes like part of your family and he will do above and beyond for you. We have used Mladen in the past and he never disappoints. His bubbly personally is very hard to come across and he truly is great. Mladen is also very professional. We will definitely use Mladen again as we know that he will deliver. Thank you Mladen.

    Seller of house in Albert Park, SA

  • This was the second time we have engaged Mladen’s services. On both occasions we have achieved excellent and timely results.

    Mladen has great knowledge of the the local market. He worked very hard for us. Mladen’s multi-dimentional approach brought us offers from a range of different sources. We’re very impressed.

    Communicates well whilst bringing together both an old school an new age approach. Mladen will listen to your needs, but lead you through your marketing campaign. Highly recomme.

    Seller of house in Albert Park, SA

  • I was so impressed with Mladen’s honesty and the amount of work he puts into his profession. Mladen provides you with research of the market and an honest opinion from the outset. He has extensive knowledge and successfully matched our property with potential buyers, not just relying on open inspections. Mladen kept us informed, provided constructive feedback and secured a contract in a very short time. I am very happy with the result and will be working with Mladen in the future.

    Seller of townhouse in Queenstown, SA

  • We have been working with Mladen for a few years and have had great experiences each time! He provides great advice and is proactive in his approach. Mladen is hard working, reliable and very honest. Thanks again Mladen, looking forward to continuing to work with you!

    Seller of townhouse in Queenstown, SA

  • Mladen steered our family through a difficult process as this was a deceased estate we were selling and was always considerate and mindful of our needs. We trusted his expertise completely and were glad to do as that is his environment. When we had questions they were answered honestly and we were glad of the advise he gave for us to get the best outcome. I think he is an asset to the company and would recommend Ouwens Casserly and Mladen in particular to anyone considering selling their home.

    Seller of house in Fulham, SA

  • Mladen showed a high level of professionalism throughout the sale process and was extremely easy to deal with. Mladen was very prompt with communicating each step of the sale process and made what could have been a more stressful process much easier. Highly recommend Mladen for future sales.

    Seller of unit in Fulham Gardens, SA

  • He was extremely helpful, open, transparent, professional and reliable through the whole process, he really cared about us ,very friendly , understood our needs and answer all questions from the very first day. He is the best! And great to work with.

    Buyer of residential land in O Halloran Hill, SA

  • The best agent in town. I was very impressed with Mladen’s personalised approach and attention to detail. He was there for all the house openings himself and very responsive and easy throughout the process. I highly recommend Mladen if you want to be looked after well by someone professional and caring.

    Seller of house in Salisbury East, SA

  • I again wanted to say thank you for representing us and for doing such a great job selling our home. It certainly wasn’t a straightforward prospect, however, I really appreciate the effort and the attention that you gave to it.

    It means a great deal to us and it will not only have an immediate impact on our family, but will significantly change lives from this point forward. We are very proud of our home and I think the OC brand beautifully represented the quality and excellence that we aimed for when building it.

    Graig M