This method for configuring a home-automation system for a building includes a plurality of communicating elements so as to perform a plurality of home-automation functions and a communication network to which the communicating elements are connected, each communicating element including a network interface possessing a network address and implementing one or more software objects modelling this communicating element in the form of resources of at least three types: input, output and logic unit. The method includes steps of:—discovering the various communicating elements of the communication network,—mapping, in the communication network, the resources that each communicating element discovered offers,—programming the home-automation functions of the home-automation system while taking account of the mapping of the resources in the communication network.