The T.U.T. it will facilitate, both to Public Administrations and to citizens, flexible dynamics that will allow the activation of mechanisms to reincorporate disused spaces in a cycle of new useful life implementing temporary uses. For this reason, has been defined a methodology of “temporal sequencing” of the processes, divided into 6 blocks: Offer, Demand, Assignment, Financing, Implementation and Assessment). This methodology will allow to respond to the citizen’s demand through calls, implementing innovative models of cession of use as well as alternative forms of management. Finally, they establish an “index of opportunities” evaluation to act in a building based on environmental, social and economic indicators.