The building has been vacant since 2006, when court sittings and services were relocated to the Main Street in the town.
These works will include a complete strip-out of the building removing the old heating system, and other furnishings.
This work is supported through the Community Recognition Fund and is the first step in returning the building back to active use.
Tánaiste Announces €40 Million Investment For Blessington Housing Development
Major Easter Rail Works Set to Disrupt Wicklow Commuters
Wicklow GAA Under Fire After ‘deeply disrespectful’ April Fools’ Post
Knockananna's Sarah Murray Takes First Dates Ireland By Storm
Wicklow Councillors Back Move To Increase Housing By Up To 5,500 Units In Revised Plan Upgrade