A dump trailer comprises a frame that is supported by at least one axle coupled to two wheels. The dump trailer includes a hitch operatively coupled to the frame and is configured to be attached to a tow vehicle. The dump trailer further includes a dump box pivotably coupled to the frame. The dump box has a front wall and is moveable between a lowered position and a raised position. The dump trailer also includes a storage unit supported by the frame and positioned adjacent to the front wall when the dump box is in the lowered position. The storage unit has at least one door and an interior configured to store items placed therein. The door is openable and the interior of the storage unit is accessible when the dump box is in either the lowered position or the raised position.