Demolition of Rothesay House in Glenrothes is now underway.
Fife Council's former office building has been closed since 2023, but its demolition was delayed for several months due to nesting birds in the building.
The project is expected to take five months.
There will be a single lane closure of Rothesay Place with traffic management and a contraflow system in place for around four weeks while the building's north wing is demolished.
Council spokesperson for strategic planning Cllr Altany Craik said: "We are working to reduce our estate and make it more sustainable.
"Rothesay House is at the end of its useful life and its construction and design means there are no viable alternative uses for the building.
"Our blended ways of working in place since the end of the Covid pandemic means we no longer need so much office space and can make better use of this prime location in Glenrothes town centre."