I have checked postcodes and telephone numbers from flats in the largest 8 blocks in my town (one of which I live in), and the checker result makes no mention of FTTC for any of them.
They also do not appear on the BT postcode/cabinet spreadsheet that was floating around on here a while ago.
All of the blocks are relatively close to the town centre and therefore the exchange.
As other posters in this thread have said, there shouldn't be a problem, but in at least some cases, it would appear that there is one. I just wish I knew what it was. My only real guess is that they simply don't have a cabinet due to proximity to the exchange. I would say they are all in the range of 500 - 1500m straight line distance.
Incidentally, none of the blocks can get VM cable either even though seemingly every non-flat property in the town can.
As a flat dweller I'm worried. Fast ADSL2+ is one thing, but I'm struggling to see where anything better is coming from.