The purpose of this contract is, on the one hand, to -identify materials and coatings that may contain lead before work and/or before re-leasing. - Identification of materials, coatings and products likely to contain asbestos before work, before demolition and/or before relocation. - Carrying out gas diagnostics on relocation on indoor gas installations in dwellings located in a collective residential building whose installation is more than fifteen years old or after rehabilitation work on the indoor gas installation. - Carrying out Energy Performance Diagnostics, in buildings or homes

The purpose of the consultation is to award two contracts with identical services:-Identification of materials, coatings that may contain lead before work and/or before relocation.-Identification of materials, coatings and products likely to contain asbestos before work, before demolition and/or before re-letting.-Carrying out gas diagnostics on relocation on indoor gas installations in dwellings located in a collective residential building whose the installation is more than fifteen years old or after rehabilitation work on the indoor gas installation.-Carrying out Energy Performance Diagnostics, to the building or housing