This video shows a couple pulley and wall mounting systems I bought at MEC (Mountain Equipment Co-op) for storing my bikes in my relatively small apartment in downtown Toronto.
Delta Leonardo Bike Storage Rack:
http://www.mec.ca/AST/ShopMEC/Cycling/BikeStorageRacks/PRD~5003-976/delta-leonardo-bike-storage-rack.jsp
Delta El Greco Ceiling Hoist:
http://www.mec.ca/AST/ShopMEC/Cycling/BikeStorageRacks/PRD~5014-599/delta-el-greco-ceiling-hoist.jsp