Andium have been told by the States to pause the project to build 165 homes at Ann Court.
It's amid speculation that the area could instead be used for the new States HQ.
The Treasury Minister hasn't signed a Ministerial decision that would give the housing provider the loan needed to proceed.
Work on the mix of one and two bed apartments in St Helier was due to start imminently.
Andium says it was formally requested to hold off until the new Year.
"Andium Homes remains committed to delivering 165 much needed homes on the Ann Court site. However, we have now been formally requested to “pause” the project until the New Year. We are unable to sign contracts until the loan agreement is approved so await a decision from Treasury on this matter."
Deputy Susie Pinel is on holiday the moment, but her Assistant Minister Lindsay Ash told Channel 103 he's not ruling out the project going ahead 'at the moment', but that 'other things are being looked at'.

£75,500 raised in Jersey Christmas Appeal Charity Auction
Government to announce support option for carers
Drink driving can cause 'life-changing' consequences
Parked cars damaged in Victoria Avenue crash
L'Ecume II: Lewis Carr jailed for 20 months for fatal collision at sea
Guernsey's former Chief Minister admits making indecent images of children
Minister approves 42 sheltered homes at nursing home
Jersey potato farm to be the site of Channel Islands' largest roof solar array