Variants on the initiative of the candidates are authorized as long as they make it possible to improve the conditions of execution or the performances of the materials and only on the condition of having answered in advance to the basic offer. Variants are defined in the specifications and must be encrypted obligatorily. The lack of encryption of any of these variants will make the offer irregular. The choice of one or the other of these variants will be made at the time of the award of the contract and will be added to the basic offer.

Works of creation and development of an outdoor parking of the Guillaume Apollinaire residence in Bondy 93140. They include:

- the creation of a parking area with 82 spaces,

- the rehabilitation of existing pavement and parking areas,

- the installation of an access control,

- refurbishment of the ground marking of parking spaces,

- the creation of landscaping.