About Ouwens Casserly

Ouwens Casserly is a dynamic & innovative property firm based in South Australia, selling more than 1200 homes a year and managing close to 3500 investment properties.

Get an instant appraisal Find a sales agent

We Specialise in

Residential Sales

View the latest premiere properties in South Australia.

View all listings

Property Management

Learn about the OC advantage.

Read More

Project Development Sales

Full 360 degree service from branding to sales.

Projects

Auctioneering

The right Auctioneer can make a difference.

Find an auctioneer

Our Values

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. 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.

Get an instant digital appraisal Meet the team

Authenticity

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

Passion

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

Precision

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

Optimism

In our attitude. Positive, upbeat and energetic.

1

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.

Community

With representatives in every Ouwens Casserly office, our nationally recognised 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 well-being around us.

Learn about our community involvement

Our History

A walk through Ouwens Casserly's journey to being one of SA's top award winning real estate agencies,
dedicating their passion through the years to making South Australian's property dreams come true.

  • 2024
    Year - 2024
    • OC Short Stays in Dec
    • Muirhead Acquisition in Dec
    • OC Mitcham opening in Dec
    • OC South Coast opening in Nov
    • REISA WINNER Large Residential Agency in Nov
    • REISA WINNER Projects Marketing Developments in Nov
    • REISA SILVER Large Property Management Agency in Nov
    • Property Management SA Acquisition in Nov
    • Smallacombe Property Management Acquisition in Nov
    • Leading Teams High Performance Team in Sept
    • REB Top 50 Agent SA/NT in May
    • REB Social & Community Service Program of the Year in Mar
    Number of staff
    Total 154
  • 2023
    Year - 2023
    • Elders Real Estate Glenelg Acquisition in Nov
    • REISA WINNER Community Service in Oct
    • REISA SILVER Residential Agency – Large in Oct
    • REISA BRONZE Property Management Agency – Large in Oct
    • Elite Real Estate Acquisition in Oct
    • Nathan Casserly keynote speaker at the Australian RE-MAX Top Performer Conference (Fiji) in Jun
    • Bayly Real Estate Acquisition in May
    • REBs FINALIST Major independent of the Year in May
    • REBs WINNER Social and Community Service Program of the Year in May
    • REB Australia's Top 50 Sales Office
    • AREAs WINNER Residential Agency of the Year in Apr
    • AREAs #2 Apartment Campaign of the Year – OTTO Townhomes in Apr
    • OC Headquarters Eastwood opening in Mar
    • OC Lonsdale office opening in Jan
    • Timms Real Estate Acquisition in Jan
    Number of staff
    Total 135
  • 2022
    Year - 2022
    • Ouwens Casserly wins Real Estate Business Major Independent of the Year Award
    • Ouwens Casserly has 11 agents in the Real Estate Business Top 50 Agents list for South Australia
    • Ouwens Casserly wins Silver for Residential Agency – Large at the REISA Awards
    • Ouwens Casserly wins Silver for Property Management Agency – Large at the REISA Awards
    • Ouwens Casserly wins Silver for Project Marketing – Developments at the REISA Awards
    Number of staff
    Total 113
  • 2021
    Year - 2021
    • Ouwens Casserly launches new generation website & implement paperless office
    • Ouwens Casserly Real Estate undergoes first brand refresh
    • Ouwens Casserly Real Estate are finalists for 5 categories in the Real Estate Business Awards 2022
    • Introduced online auctions
    • CEO Appointed
    Number of staff
    Total 114
  • 2020
    Year - 2020
    • Engagement staff survey results show that 100% of our employees are proud to work at OC
    • Ouwens Casserly conducts first Careers Webinar
    • Introduced online auctions
    • COO Appointed
    Number of staff
    Total 110
  • 2019
    Year - 2019
    • Ouwens Casserly Real Estate opens office in Kensington
    • Ouwens Casserly founds the Community fundraising Committee
    • Ouwens Casserly Projects wins the Marketing Excellence Awards at UDIA
    • Ouwens Casserly Projects win gold for Project Marketing Developments at REISA
    • Acquisition of a proportion of the Connekt rent roll
    Number of staff
    Total 114
  • 2018
    Year - 2018
    • Ouwens Casserly Real Estate opens office in Unley
    • Ouwens Casserly Henley Real Estate moves into new state-of-the-art office located in Henley Square
    • Ouwens Casserly Projects win gold at the REISA Awards for Project Marketing Developments
    • Acquisition of Belle Unley rent roll
    Number of staff
    Total 106
  • 2017
    Year - 2017
    • Ouwens Casserly Real Estate opens office in McLaren Vale region in Willunga
    Number of staff
    Total 97
  • 2016
    Year - 2016
    • Alex Ouwens and Nathan Casserly speak at Australia’s largest real estate conference, AREC.
    • Alex Ouwens and Nathan Casserly feature on the cover of national real estate magazine, Elite Agent.
    • Ouwens Casserly Projects is founded
    Number of staff
    Total 83
  • 2015
    Year - 2015
    • Ouwens Casserly Real Estate lead the way with an Australian-first for open inspections by introducing virtual reality goggles
    • Alex Ouwens is elected President of The Real Estate Institute of South Australia
    Number of staff
    Total 61
  • 2014
    Year - 2014
    • Launch of Ouwens Casserly Real Estate (better known as OC) Founded by Alex Ouwens & Nathan Casserly
    • Ouwens Casserly Real Estate opens 2nd office at Henley Beach
    • Adam Blight & Greg Blight merge with Ouwens Casserly Real Estate to form Ouwens Casserly Property Management at Collinswood.
    Number of staff
    Total 41
  • 2013
    Year - 2013
    • Franchise sales office becomes number 1 for the group in SA
    • Advisory Board established
    Number of staff
    Total 21
  • 2012
    Year - 2012
    • Alex Ouwens & Nathan Casserly start a franchise sales office at 200 East Terrace, Adelaide
    Number of staff
    Total 5

Our Awards

  • REB 2025 WINNER Major Independent of the Year

  • 2024 REISA WINNER Residential Agency Large

  • 2024 REISA WINNER Projects Marketing Developments

  • 2024 REISA SILVER Property Management Agency Large

  • 2024 REB WINNER Social and Community Service Program of the Year

  • Majority of REB 2024 TOP 50 Agents SA/NT are from OC

  • 2023 REISA WINNER Community Service

  • 2023 REB TOP 50 Sales Offices

  • 2022 REB WINNER Major Independent Group of the Year

  • 2022 AREAs WINNER Residential Agency of the Year

  • 2022 WINNER Residential Agency of the Year

Corporate Partners

Networking Partners

Community Partners

We are here to help.

Our purpose is to help people realise their dreams and aspirations through property. Whether you are selling, buying, investing, renting or developing we are here to help achieve your property goals.

Explore our services Drop us a line