Four fire engines have been sent to a fire at the old planning offices at South Hill.
A total of 18 firefighters are on the scene in St Helier this afternoon (3 January).
An Incident Command Vehicle and Fire Duty Manager have also been dispatched.
The fire is said to be on the first floor of the former offices.
Footage posted online shows smoke coming from the building.
People are being asked to avoid South Hill, as the road is closed at both ends.
Battle of Flowers: Plea for last-minute volunteers
Battle of Flowers teams across Jersey are appealing for any volunteers to help with the final push ahead of tomorrow's parade (14 August).
25% of Jersey A-level grades A-A*
A quarter of all A-level grades in Jersey have been marked as A or A*.
Jersey community unites out west for solar eclipse
Thousands of islanders basked in the August heat to watch the once-in-a-generation partial solar eclipse.
A-level results day: "The grades you get don't define you"
It's that time of year again... A-level results day!
Invite to 'Sponsor a Brave Bear' for families facing off-island treatment
A new campaign has been launched to strengthen support for Jersey families facing off-island treatment journeys.
Travel problems persist for some Jersey residents
Jersey's Home Affairs Minister says the government is continuing to press for action to prevent some passengers being denied boarding following the introduction of the UK's Electronic Travel Authorisation scheme.
The solar eclipse in Jersey: All you need to know
A rare solar eclipse - where the moon covers the sun, blocking its light - will start at around 6:15 pm this evening (12 August).
£1.2m in fines for missed Income Tax deadline
Around 4,000 will be getting a £300 fine for not filing their 2025 tax return in time.
