STARS currently has a base at Edmonton's City Centre Airport. ((CBC))

The city of Edmonton is buying the building the STARS air ambulance service has been using at the City Centre Airport.

The agreement frees STARS to negotiate with Alberta Health Services on a move to the Edmonton International Airport, while allowing the service to keep operating at the City Centre Airport, said Phil Sande, the executive director for land redevelopment at the airport.

Sande said there will be other buildings the city will need to buy over time, as the city moves forward with its phased closure of the airport's operations.

"There are some tenancies that have very long terms associated with their tenancies and we are negotiating with an array of them in order to acquire those rights in order to allow the redevelopment to move forward," he said.

The deal with STARS will be finalized on Dec. 31.