A 43-storey tower, Birmingham's tallest residential building, will be built if the city council approves revised plans for a new development.
There would be 43-storey and 23-storey towers
The proposed tower with 332 luxury apartments is part of a new application for the car park site fronting Snow Hill Queensway.
The application also includes a second 23-storey tower with a 170-bedroom hotel and leisure centre.
The Snow Hill redevelopment is costing about £400m.
The project would take up 107,870 sq ms (129,011 sq yds), compared to outline planning permission which has been granted for 90,311 sq ms (108,011 sq yds).
The new application has been submitted by GVA Grimley, planning advisors to the developers Ballymore Properties, which wants to increase the number of residential units by 132.
The hotel's operator has not yet been determined, a spokesman for GVA Grimley said.
A new public square and water feature is also planned as part of the scheme.