Councillors have warned they do not want to see “a ten year building site” during the development of the new cultural quarter in Leeds City Centre.
The blueprint for Quarry Hill includes proposals for offices, leisure facilities, a college, hundreds of flats and a multi storey car park.
There are also provisions for a medical centre, flats, educational spaces and a student residence on the site, which is bounded by the West Yorkshire Playhouse and Leeds College of Music.
But members of Leeds City Council’s plans panel voiced concerns over the timescales of the proposed plan submitted by Caddick Developments.
Councillor Colin Campbell said: “What we are interested in is certainty.
“We were presented with a brave new vision ten years ago and it has not happened.
“My concern is that we will not get a complete development on site. In principle, I’d like to support it, but I am not happy with it as it is.”
Coun Graham Latty added: “It would have been helpful it we had proper phasing.
“The prospect of a ten year building site doesn’t make me want to back the scheme.”
The blueprint was first mooted a decade ago but was shelved due to delays in talk and then the onset of the recession.
The panel have asked for clearer deadlines from the applicant to be put forward before they meet again next month.