Can't speak for Cork, but I faced the same problem with a house in Co. Antrim. The house numbers in the census were just a private administrative numbering system used by the enumerator, to separate each property. No link to any other source and different numbers in the 2 censuses 1901/1911.
In my case, which involved a rural address, I made local enquiries in the townland. I had 13 properties on the census. I found some are still owned by descendants of the 1911 census and, using details of the outbuildings, I was able to eliminate most of the others till I found the one I was interested in. The current owner then helped me and found a lease with the name of the ancestor who had lived there in 1901, confirming I had found the right property. It took quite a bit of work! Don't know of any other easier method.
Elwyn