The Christchurch School of Gymnastics spent $200,000 renovating its current building in 2013, but says the Travis Road site is no longer fit for purpose and it requires big spending to fix earthquake damage.
The current lot the gymnasium sits on his surrounded by swampland, so it would be difficult to re-build on.
The school wants to relocate and has been talking to the Coastal-Burwood community board about a site next to the Eastern Recreation and Sport Centre, which is under construction.
The new building would require $1.1 million of ratepayers' money to help construct the $8m gym.