Demolition work has started on the St John building on 17th Ave to make room for a new St John hub.
St John district operations manager Jeremy Gooders said the demolition stage of the project should take a couple of days, with the new hub predicted to be completed by September 2017.
The main building was built in the early 1980s, with the ambulance add-on area created in 1990.
"We originally had six full-time staff and a small group of volunteers. Now we have 26 full- time workers, 60 volunteers, two health shuttles with 28 volunteers, first aid training and medical alarm facilities."
The facilities, workers and volunteers would be based at three locations in Tauranga while the new building was being built.