A collapsible trailer apparatus which can be used in an extended length and stored in a collapsed and/or partially disassembled state. End members slideably fit within frame tubes and offer telescoping length choice of the apparatus. Side rails are removable, as are side panels. Side rails and side panels are available in varied length choices. The tongue is slideably fitted and adjustable in length. Prop legs are provided for upright storage. No tools are required for assembly, disassembly, or use.