Paris La Défense has set out plans to convert up to a fifth of its office buildings into housing, while Groupama Immobilier intends to turn the nine-storey Le Diamant office building into apartments. The proposals respond to weaker office demand and could help shift the business district away from a work-only model, but each conversion will depend on whether the buildings can be adapted for homes.
Le Diamant is the most specific scheme reported so far. About 1,800 people currently work in the building, according to the BBC. Groupama Immobilier’s deputy chief executive, Roland Cubin, said the entire building is intended for conversion to apartments.
The wider plan comes as office use has weakened after the pandemic and the growth of homeworking. Pierre-Yves Guice, chief executive of Paris La Défense, told the BBC that the district’s office vacancy rate is about 14% to 15%. Ludovic Delaisse, chief executive of Colliers France, said demand for office space in Paris has fallen by almost a third over the past five to six years.
The case for conversion is therefore urban as well as commercial: housing, leisure and other daily uses could make La Défense less dependent on commuters. But office towers are not blank housing sites. Deep central areas with no natural light may have to remain corridors, lift access and stairs rather than become rooms. Additional plumbing is needed, and some buildings have ceiling heights that may be unsuitable for apartments.
Those constraints matter because they can reduce the usable residential area and increase the cost of a scheme. Cubin has called for lower taxes and simpler conversion rules, arguing that their treatment will affect how much vacant office space can be reused. His comments are an industry request, not a government decision.
Paris La Défense has announced a direction of travel, and Le Diamant gives it a concrete test case. The authority has not identified all the buildings covered by the wider plan, set a timetable, or stated how many homes it expects to create. Whether the proposal delivers significant housing will turn on building-by-building design and the regulatory costs of changing use.
Sources
- BBC Europe — France coverage · Source date: 2026-11-12
Independent editorial content. WUA is not affiliated with any political party. 2026-11-12