A row over deliveries at Phibsborough Shopping Centre has thrown its redevelopment into doubt.
Often described as Ireland's ugliest building, a revamp of the centre has been on the cards for years.
It was bought by Mm Capital in 2016, and given planning permission last year.
However, Tesco - the anchor tenant - needs to give its permission for certain changes to be made.
Phibsboro Shopping Centre - What Tesco Says
Tesco says it's been clear from the very start. It wants to keep taking deliveries through the front of its store.
It says a proposal by the developer to move them around the back "jeopardises our ability to operate and trade".
The supermaket claims that would have "consequences for our staff, customers and the wider community".
Tesco has shrugged off a suggestion that delivering to the front of its store is a health and safety risk.
"The health and safety of our colleagues and customers is our utmost priority.
Deliveries are made between the hours of 11pm- 2am in order to mitigate risk.
A recent risk assessment at our Phibsborough store confirmed that the deliveries to the front of store meet our rigorous health and safety standards", a statement read.
Tesco says it supports the proposed redevelopment, provided "certain specific rights" it has are facilitated.
The supermarket chain has denied it has made any fresh demands, as claimed by the developer.
Phibsboro Shopping Centre - What The Developer Says
Mm Capital said Tesco's demands "makes the entire scheme financially unviable".
The developer claims Tesco wants a bulk storage facility and loading yard built for it, and wants exclusive access.
Mm Capital believes Tesco's requests could have significant negative impact on a planned public plaza.
Derek Poppinga, Director of Mm Capital, said "it is becoming increasingly apparent that they simply don't want anything to happen here".
He believes continuing to make deliveries to the front of the store is "unsafe, a danger to the public and a danger to users of the shopping centre".
He says his company is "not aware of any other major supermarket makes deliveries in this way".
Phibsboro Shopping Centre management have advised Tesco to stop taking deliveries to the front of its store from May 27th.
Derek Poppinga said he is "uncertain" where the project will go from here.
A review "will either result in the project being shelved", or lead to a significant redesign "without Tesco's co-operation", he said.
Mm Capital said "the major loser in this redesign will be the local community as the plaza will have to be scaled back hugely".
It is both enormously frustrating and genuinely surprising that Tesco has shown a complete lack of interest in this important community gain as the focal point of Phibsboro's regeneration", a statement read.
Tesco said it "has been a proud member of the Phibsborough community for over 20 years".
"We employ over 70 colleagues at the store and since 2014 we have supported almost 100 local community projects through the Tesco Community Fund".
