Warren has been involved in the real estate industry since 2001, as a salesperson at First National Real Estate in Gympie before moving to Chinchilla in 2004.
In 2005 Warren opened Chinchilla First National Real Estate before focusing more on property development. In May 2010 Warren opened Surat Basin Real Estate with business partner Pam Moloney.
Since then, Warren has been active in the business and since 2016 has taken on a more active role in the Commercial and Industrial sales, leasing, and property management.
In 2018 Warren’s focus also shifted to residential sales in the region. Since then he has become the market leader in residential and commercial sales for Chinchilla.

In October 2021 Warren purchased Pam's share of the business and made the decision to rebrand the business in August 2022 to First National Real Estate.
The business name has changed to First National Real Estate Surat Basin Chinchilla.