About Ouwens Casserly

Ouwens Casserly is a dynamic & innovative property firm based in South Australia, selling more than 1000 homes a year and managing close to 1700 investment properties.

Established by Alex Ouwens and Nathan Casserly in 2014, OC has sold more than $7 billion in property and employs a team of more than 100+ passionate property professionals. Recently winning the national Major Independent Group of Year, we are a business that is built on great people, strong leadership and a commitment to exceeding customer expectations.

Our vision is to be the most trusted and well-respected agency in SA, with the sole purpose of helping people to realise their dreams and aspirations through property. 

Meet the team Contact Us

We Specialise in

Residential Sales

View the latest premiere properties in South Australia.

View listings

Project Development Sales

Full 360 degree service from branding to sales.


Property Management

Learn about the OC advantage.

Read more


The right Auctioneer can make a difference.

Find an auctioneer

Greatest Imaginable Challenge

Our success is born of culture, professionalism, and a genuine desire to help people reach their goals through property.

Our professionalism, our attention to detail, our skill in managing, marketing, and negotiating the sale of properties is how we build our reputation. It’s what we do.

Our culture is our greatest asset. Our positive attitude, passion for real estate and unblinking faith that our colleagues have our back is what sets us apart, it’s what makes us different. It’s how we make it happen.

Our goal is to help people realise their dreams and aspirations through property. When a vendor puts their home in our hands, it’s the ultimate compliment.

It’s why we get recommended more.


With representatives in every Ouwens Casserly office, our Community Committee is focused on projects close to our hearts and our homes. Supporting the needs of the South Australian community, we work alongside local innovators, artists and charitable organisations to boost social and economic wellbeing around us.

Learn about our community involvement

Our values


In every minute of everyday. Genuine, ethical, trusted, accountable.


In our attitude. Positive, upbeat and energetic.


About working hard and having fun. We love what we do and we love helping people.


Our operation is innovative and world class. Our process, training and standards ensure exceptional service and results.

Corporate Partners

OC Property Management Corporate Sponsors