A precast reinforced concrete module comprising: - a concrete wall , - at least two longitudinal outer nerves , wherein a first nerve of said at least two longitudinal outer nerves is disposed at an end of said concrete wall and a second outer nerve of said at least two longitudinal outer nerves is disposed at the opposite end of said concrete wall , said concrete wall extending between said first and second outer nerves, said at least two longitudinal outer nerves being configured for supporting vertical and horizontal efforts; - at least one recess made along said concrete wall , said at least one recess delimiting the at least two longitudinal outer nerves , the at least one recess being made along the entire height of the module , the at least one recess being configured for acting as shaft allowing the passage of services; - engagement means (17; 171, 172, 173) for mechanical connection with another module forming a vertical wall; - supporting means mounted on said longitudinal nerves ; wherein it comprises: - at least one building service installation element preinstalled on said concrete wall in said at least one recess made along said concrete wall , said at least one building service installation element comprising at least one free end for connecting said building service installation element with another building service installation element preinstalled on another module ; wherein said at least one building service installation element is an element for the installation of a gas service, or an electricity service, or a water service or a telecommunications service, characterised in that at least one of said supporting means mounted on said longitudinal nerves is a longitudinal and/or a transversal cantilever mounted on said longitudinal nerves for transmitting vertical and horizontal efforts. - a concrete wall , - at least two longitudinal outer nerves , wherein a first nerve of said at least two longitudinal outer nerves is disposed at an end of said concrete wall and a second outer nerve of said at least two longitudinal outer nerves is disposed at the opposite end of said concrete wall , said concrete wall extending between said first and second outer nerves, said at least two longitudinal outer nerves being configured for supporting vertical and horizontal efforts; - at least one recess made along said concrete wall , said at least one recess delimiting the at least two longitudinal outer nerves , the at least one recess being made along the entire height of the module , the at least one recess being configured for acting as shaft allowing the passage of services; - engagement means (17; 171, 172, 173) for mechanical connection with another module forming a vertical wall; - supporting means mounted on said longitudinal nerves ; wherein it comprises: - at least one building service installation element preinstalled on said concrete wall in said at least one recess made along said concrete wall , said at least one building service installation element comprising at least one free end for connecting said building service installation element with another building service installation element preinstalled on another module ; - at least one building service installation element preinstalled on said concrete wall in said at least one recess made along said concrete wall , said at least one building service installation element comprising at least one free end for connecting said building service installation element with another building service installation element preinstalled on another module ; <EOS>