i have no idea if a plan was lodged,but residents objections to a lack of sunlight was the reason i seem to remember.
there was a ground plan in a book produced by the club after our year in the premier league
this was the original plan back in 1994. it was supposed to be built at the same time as the intel stand, but residents blocked it due to lack of sunlight, as you said
http://img.photobucket.com/albums/v308/legodcuervo/model3.jpg