The car park at Ann Court will close permanently from midnight.
88 spaces will be lost as Andium Homes breaks ground for 165 new flats.
The States voted in January to release the £37.8m loan needed for work to start, after the Chief Minister put the project on hold last year.
Senator John Le Fondré wanted a new States HQ built there instead, but politicians voted 26-20 in favour of giving Andium the necessary funds.
Work is due to start tomorrow (5th March), and be completed at the end of 2021.
Occupation diary entries brought to life for Liberation 80
A series of videos are being released bringing the memories of islanders, who lived through the Occupation, to life.
Brittany Ferries takes legal action over Jersey ferries contract decision
Brittany Ferries is taking legal action against Jersey's Economic Development Minister.
DFDS releases provisional summer sailings timetable for Jersey
The Danish ferry company chosen as Jersey's new operator has shared provisional sailing times for July and August 2025.
