During this time, he started architectural studies at the Central Technical College (now the Queensland University of Technology) and completed the design of his first house in Sherwood.

[3] On his return to Brisbane in 1965, Poole continued his studies at the Central Technical College and the University of Queensland, graduating in 1966 with a Diploma in Architecture.

[10] Poole was a mentor to multiple Queensland architects, including RAIA Gold medalists Lindsay and Kerry Clare, Dan Sparks, and Tim Bennetton.

Alongside Benetton, the Gabriel & Elizabeth Poole Design Company won the 2018 RAIA Robin Dods Award for Residential Architecture for their Stradbroke House.

[11] Up until his death, Poole continued working on concepts to facilitate tri-generation living, specifically lower-cost modular-designed homes that catered to aged care.

This was due to his belief that Australian architects needed to move towards simple, uplifting spaces which can "accommodate the different generations of a family within a house, providing them with their own privacy and dignity.