Abstract: A trailer assembly includes a platform that has a front edge, a rear edge, a first lateral edge, a second lateral edge, an upper surface and a lower surface. A pair of wheels is rotatably coupled to the platform and a hitch coupler is attached to and extends forward of the platform. A first housing is fixedly attached to the platform and extends along the first lateral edge. A second housing is pivotally coupled to the first housing. The second housing is positionable in a stored position positioned over the platform extending along the second lateral edge or in a deployed position swung outwardly away from the platform. The first and second housings each haves a plurality of compartments therein for storing tools and automotive parts.