The « Sénart » CDT

The “Sénart” CDT is located to the South of the Greater Paris Region, straddling Seine-et-Marne and Essonne it forms one of the entry points to Grand Paris. Even though it is located in the Outer Suburbs and is not linked to the Grand Paris Express, the town of Sénart has been listed as a potential site for a 2nd railway station on the Southern high-speed line (TGV) and, because of this is considered as an economic development site within the framework of Grand Paris.


The boundary of the CDT is that of the Sénart SAN (Syndicat d’Agglomération Nouvelle, or New Town Association) which covers territories in 12 communes in Seine-et-Marne and Essonne. Most of these communes are located within the boundary of the New Town of Sénart (Combs-la-Ville, Lieusaint, Moissy-Cramayel, Réau, Savigny-le-Temple, Nandy, Cesson, Vert-Saint-Denis, Tigery and Saint-Pierre-du-Perray). This area has a population of 115,000 and provides 38,000 jobs.


The CDT was validated in March 2012 and the public enquiry was carried out in February 2013. The definitive signature of the CDT was completed on 20 December 2013.

Main objectives of the CDT

 The objectives of the CDT fall under 4 main themes :

  • Developing Sénart’s economic centre in line with the objective for new housing development
  • Building a centre of excellence around logistics innovation and eco-construction
  • Strengthening Sénart’s accessibility on a regional, national and international level
  • Making the most of the natural surroundings

The project’s aims and planned actions within the CDT include:

  • The construction of 1,050 new homes per year including 26% of social housing; also to ensure a diverse range (student or retirement accommodation)
  • An aim to create 25,000 jobs
  • Improvement of the RER D service towards Paris and the Grand Paris Express, with a higher train frequency and more suitable facilitiesCreation of a new TGV railway station
  • Development of a TZen bus service (high-quality bus service with its own bus lane)
  • Create a more compact town with local services and retail by redeveloping existing buildings; but also preserving quality of life (develop retail and cultural facilities, supply of services)
  • Establish an “Engineering science” centre in partnership with UPEC and ICAM with a specific focus on logistics. Develop a university centre increasing from 2,500 to 5,000 students in less than 5 years.
  • Develop a centre of excellence for logistics, without developing new areas or extending existing stock.
  • Welcome eco-businesses and in particular those involved in energy production
Source:  SAN Sénart