A modular shelter assembly is presented. In particular, the shelter assembly comprises a mounting member structured to be secured to a predetermined support, a support beam outwardly spaced from the mounting member and the predetermined support, a plurality of track beams each disposed in interconnecting, supported relation to the mounting member and the support beam, the mounting member, the support beam and the plurality of track beams collectively comprising a modular construction, and the modular construction at least partially defined by an at least initially adjustable interconnecting relation of the plurality of track beams to both the mounting member and the support beam.