Grand Paris Aménagement is launching the “Challenge 50, produce better with less” and will present the 3 groups called upon to develop their innovative project during MIPIM 2025

By mobilizing land that it owns and by compensating groups of real estate players who will work on an innovative project, the developer is committed to encouraging "disruptive" solutions, and to bringing out and sharing useful ideas for the government and for the entire sector.

For Jean-Philippe Dugoin-Clément, President of Grand Paris Aménagement: "We are convinced that real estate players, each in their own field, have already identified levers to produce better with less. We want to play the role of catalyst for these new ideas and help them implement them to collectively build solutions that are useful to the entire sector. If necessary, we are ready to review our habits and our standards."

A challenge to the sector: what if you started from a blank page to produce better and cheaper?

Grand Paris Aménagement is offering a challenge to stakeholders in the city-building sector, a competition in the form of a carte blanche with the ambition of reinventing housing production methods. The response to the objective set to halve production costs (and not just construction costs!) can take different forms: producing housing intended for sale and costing buyers half as much, or housing intended for rental, with a rent (including charges) half as high, or any other "intermediate" form between ownership and rental, etc.

The instruction: produce a residential building

• Better meeting the needs of its future inhabitants,
• Better adapted to the climatic conditions of 2050,
• Weighing up to 2 times less on the real estate purchasing power of its buyers and/or tenants,
• Even if it means questioning habits, standards, traditional legal or financial structures from top to bottom.

3 groups of candidates selected nationally, announced at MIPIM 2025

Any group of stakeholders from all over France who together have the skills to design, build, market and ensure the quality over time of a real estate project can apply. 3 groups of candidates will be selected on the basis of the audacity and impact of the proposed measures. A single watchword: "break down the silos!"

All levers can be mobilized... except public money

The objective being to support a method innovation carried out by the stakeholders, they will be invited not to integrate public support into their approach – whether subsidies or artificial reductions in the cost price of the land.

All other means are open, however: re-examining the programme, the “habits”, the standards whatever their status (including the rules that Grand Paris Aménagement sets for its own projects!), the legal and financial structures, etc.

About the applications

• Application phase
  • Applications to be submitted by February 28, 2025 to the following address: challenge50@grandparisamenagement.fr
  • The first stage of application must take the form of a note of intent of 3 to 5 pages (free format) specifying the members of the group, its approach and its method to respond to the ambition of the challenge, and the profile of the territories where the envisaged approach could be tested.
• Offer phase
  • March 2025: The offer phase that will follow will allow 3 candidates selected, following the analysis of the files, and announced at MIPIM 2025, to work within 4 to 8 months on a concrete case (land identified and located, cost of land specified) to propose a project and its structure to achieve or come closer to the objective.
• GPA will participate financially in the studies carried out by each group; candidates will remain owners of their studies.
• The entire process initiated through this challenge and the proposals that emerge will subsequently be the subject of broader communication, in order to share lessons learned and pool the approaches and levers identified with the city-making sector.