AN UNDERGROUND walkway from the planned St George's Warehouse development would link apartments with Huddersfield train station and the centre of town.
Developers hoping to transform the 250,000 sq ft brick building into homes, offices and shops say their plans would effectively bring the unused warehouse into the heart of Huddersfield.
HD1 Developments hope the flats and offices could be open as early as 2006.
Showing-off the vast interior of the five-storey Victorian warehouse, Sher Hassan, a company director of HD1 Development, said: "We are near the train station and close to the bus station here.
"You would get people from Leeds, Bradford and Manchester who want to live the urban life and want to work in a city commuting every day. And the M62 is not far away."
Tom Finch, of Rider Hunt Management Services, based in Leeds, is working with the developers.
He described how homes would fill the top two floors while business occupied the first and second storeys.
"There's quite strong interest in taking space. There's one confirmed user and another showing interest," said Mr Finch.
The ground floor may eventually be converted into a shopping mall.
Two big challenges presented by the building are the fact it is cut off from town and, because of its size, the heart of building is shrouded in darkness.
Some of the cavernous floors are five metres high.
The first hurdle will be overcome by the pedestrian tunnel.
"That brings this building into St George's Square. At the moment it's right in the town centre, but it's cut off. The site is isolated."
To combat the lack of light in the middle of the vast structure, the central section of the building will see a well plunging to a central `street' at the lower office level.
Some of the one and two-bedroom apartments
will have frontages overlooking the light-well.
Mr Finch said: "It will appeal to young professionals and empty nesters - anybody who wants to live in an urban environment."
The beauty of St George's Warehouse, he said, would be the variety of uses.
"It's not just residential development. There will be other things happening within the whole."