"We will either be returning to the existing site once remedial work has been completed or will be opening at a new location."
Ms Ferrand said the Spark store and the local Spark Manawatu/Whanganui business hub will "co-locate" for the next couple of months.
"We will be there during the summer period to ensure we are able to continue to offer a great service to the local community."
Read more: Whanganui Spark and Vodafone stores close
Vodafone have set up a kiosk at the Trafalgar Square shopping centre.
"We encourage our customers to come and visit us there for the time being," said communications manager Elissa Downey.
"We are looking to establish a temporary store location very soon."
Spark have said that the closure came after a nationwide audit of health and safety requirements at its retail premises and the company's standard for earthquake resilience is more stringent than government building requirements.