the new construction will mainly accommodate accommodation, with a transfer of residents in the first phase, then the restructuring of the premises will be initiated in a second phase. Because of the technical complexity (recovery of the facades of the existing building that participate in the overall model of holding it; insulation, waterproofing, joinery?) and the challenges of structural recovery, in occupied site, the project owner has therefore formulated the choice to carry out this operation in a general contractor or a group of companies with a solidarity agent. The contract covers 17 state bodies

the new construction will mainly accommodate accommodation, with a transfer of residents in the first phase, then the restructuring of the premises will be initiated in a second phase. Because of the technical complexity (recovery of the facades of the existing building that participate in the overall model of holding it; insulation, waterproofing, joinery?) and the challenges of structural recovery, in occupied site, the project owner has therefore formulated the choice to carry out this operation in a general contractor or a group of companies with a solidarity agent. The contract covers 17 state bodies