Possible Clues:

• The floor of the building for 10 across, by the sound of it
• Level in a building
• David --, English dramatist and novelist who won the 1976 Booker Prize with 'Saville'
• How a building has at least one tale, by the sound of it
• Oyster falls to floor
• Set aside rivalry, finally, on the floor of the House
• On the level, it¿s all over the floor leading to what sounds like a tale worth telling
• Floor in shop getting dirty ultimately
• All told, by the sound of it, there's one over the other in building
• Flight of fantasy taking Ecstasy