Abstract: A loft bed readily configured into expanded assembled and collapsed disassembled positions to facilitate shipping, transport, and/or storage. The loft bed includes a mattress support having a plurality of separable supports for supporting a mattress, a frame including a plurality of multi-piece, bed support rails assemblable into a frame for supporting the mattress support, and a plurality of legs for supporting the mattress support above a floor or ground, each leg including separate upper and lower leg portions. The legs and the bed support rails are attachable to form an expanded assembled position capable of supporting a user and detachable to form a collapsed disassembled position for shipping, transporting, and/or storage.