The Macandrew Rd building has been closed since floodwaters last June extensively damaged the ground floor.
The road policing group relocated to the North Dunedin station but the neighbourhood policing team, Dunedin dog section and the serious crash unit continued to work from the building.
"It [the station] was already diminished as a service for the community ... [but] we could go in there and we could report crimes,'' Dunedin South MP Clare Curran said.
"There's nowhere now. It's deeply concerning that one of our most densely populated communities ... is not getting that police support.''
In an email response, police said no timeframe had been set for the station to become fully functional again.
The road policing group, however, would not return to the station.
"There are around 10,000 people living in the wider South Dunedin area. [This is] a sizeable area that needs an on-the-ground, functioning police station. Community policing is vital,'' she said.
Like the Work and Income building before it - its reopening was confirmed in December after months of uncertainty and campaigning by concerned residents - people ‘‘need some answers'' on the future of the police station.
"It feels as if the Government agencies abandoned South Dunedin.''
Dunedin City councillor John Bezett said it was disappointing to hear the station had not reopened to the public and felt not having a set timeframe was "not good enough''.
"I think there's a perception from people out in South Dunedin that they are less than well-served by a number of institutions. [It] should have its own dedicated police force close at hand.''
There "must have been some decision'' on when it would reopen fully, he said.
"I can only assume that police can adequately police the area from the central station.''
Cr Bezett was worried it could turn into a "permanent'' closure to the public.
South Dunedin Action Group spokesman Ray MacLeod felt the station was "just another victim'' of the floods.
He was "mystified'' as to why it remained closed.
In an email response to questions, a police spokesman said the station would reopen when repairs were completed but "there is no firm timeline for the completion at this stage''.
He gave no reason why repairs had taken so long.
Police did not respond to further questions yesterday.
