Lightweight housing module and modular building

A lightweight housing module comprising at least one stretched fabric intended to form the roof of said lightweight housing module and intended to be fixed along its lower peripheral edge on a rigid frame maintained at a distance from the ground by a plurality of lateral posts which are in turn intended to be fixed on the ground, the lightweight housing module comprising a system for stretching said fabric arranged in order to be entirely arranged inside said lightweight housing module and able to stretch said fabric by pushing it upwards, at least one of vertical panels and opening frames in order to close in a substantially sealed manner the vertical facades located along the perimeter of said frame and a false ceiling arranged in order to be arranged under said fabric inside said lightweight housing module and fixed by its peripheral edge to the frame in such a way as to create a heat and sound cushion by imprisoning the air contained between the fabric and said false ceiling.