"This short term measure has saved money as we don't have to lease or rent space for these temporary moves."
The spokeswoman said the staff were IT contractors.
"It is uncertain how long they will be housed in the CAB. Councillors will decide on the future use of the building, at which point in time we will consider other options for housing these temporary staff, if necessary," she said.
A paper presented to the Auckland Development committee last month on development options at Aotea Square said the Civic Administration Building "has been plagued by asbestos issues over a number of decades".
The council is planning to sell the Civic Administration Building. Its development arm has called for developers to lodge expressions of interests for the building, which was the seat of Auckland City Council for almost 50 years.
A council document for prospective developers said asbestos removal could cost up to $12 million and some seismic work was needed.