The cost of the new Doon Valley Campus could increase by £7.6m after councillors agreed to raise the cap on spending.
The spending cap on refurbishment work at St Sophia’s Primary in Galston has also shot up by £800,000.
In its first meeting of the new administration on Wednesday, the council’s cabinet heard that the Doon Campus is now expected to cost up to £41.1m, while the refurbishment at St Sophia’s is budgeted for £4.4m.
