In 2012, the company announced that it was in the final stages of transitioning into becoming a fully professional musical theatre company, the first of its kind in Queensland. Harvest Rain produced
Oklahoma! in 2013 as its first fully professional production. In 2014, the company's first fully professional season included
Guys and Dolls starring
Ian Stenlake and
Daryl Somers,
Spamalot starring
Jon English,
Simon Gallaher,
Frank Woodley and
Julie Anthony, and an arena production of
Cats starring
Marina Prior and featuring over 500 performers on stage, making it the largest production of
Cats ever staged in the southern hemisphere. In 2014, the company moved its training, rehearsals, and administration to a building on the north side of Brisbane known as the Hayward Street Studios.
Spamalot won Harvest Rain the
Matilda Award for Best Musical or Cabaret in 2014. In 2015, the company produced
The Pirates of Penzance to celebrate QPAC's 30th birthday. The show starred
Andrew O'Keefe,
John Wood and
Nancye Hayes and featured
Billy Bourchier as Frederic and
Georgina Hopson as Mabel, in their professional debut. The production was directed by
Simon Gallaher. In 2016, Harvest Rain presented an arena production of
Hairspray in Brisbane, Adelaide and Newcastle, with a cast featuring Lauren McKenna,
Simon Burke,
Christine Anu,
Tim Campbell,
Wayne Scott Kermond and
Amanda Muggleton. An arena production of
Grease followed, performed in Brisbane, Newcastle and Adelaide in 2017, Sydney, Melbourne, Canberra, Perth and Brisbane again, in 2018. In 2019, an arena production of
The Wizard of Oz toured Brisbane, Adelaide and Newcastle in 2019 and Sydney in 2020. == Closure of the company ==