Dispute over visitor pavilion at the Palais Bourbon flares up again

Paris – 08/08/2026: The dispute over the planned visitor pavilion for the National Assembly at the Palais Bourbon has reignited. The heritage protection association Sites et Monuments is opposing a decision by the Paris City Council which, according to a report by Franceinfo, is intended to improve the planning-law conditions for the construction project. The organization considers the proposed new building to be crude and incompatible with the historic surroundings on the Quai d’Orsay.

A building is planned for the reception and security screening of visitors to Parliament. Supporters of the project regard the existing pavilion, built in 1888, as too small and functionally outdated. The design by the architectural firm Moatti-Riviere envisages a considerably larger, predominantly glass building on two levels. In addition to screening and waiting areas, it is intended to house facilities open to the public.

The cost is estimated at 52.8 million euros. This makes the project one of the National Assembly’s larger construction investments during the current legislative term. When it presented the plans in June 2025, the parliamentary administration justified them by citing more efficient security procedures, more accessible entry routes and a more appropriate capacity for growing visitor numbers. The new building was originally scheduled for completion in 2028.

However, the building permit application was withdrawn in February 2026. The President of the National Assembly, Yael Braun-Pivet, suspended the project because the planned basement construction and erection of the building required changes to the protection rules for the historic cityscape. The project therefore concerns not only Parliament’s interests, but also the responsibilities of the City of Paris and heritage protection requirements.

Sites et Monuments points to the site’s exceptional location. The Palais Bourbon stands on the banks of the Seine opposite Place de la Concorde and within the UNESCO World Heritage site “Paris, Banks of the Seine.” The association had already alerted UNESCO in 2025 and objected to the planned complete demolition of the existing pavilion. The Commission du Vieux Paris also unanimously opposed the demolition in July 2025 and expressed serious reservations about integrating the new building into its historic surroundings.

The conflict concerns two equally legitimate public interests: Parliament must ensure modern security screening, accessible routes and reliable visitor procedures within a historic building complex. At the same time, interventions along the Seine are subject to particularly strict urban planning and heritage protection standards. The precise legal effect of the City Council decision now under criticism initially remained unclear. As of August 8, neither a confirmed resumption of the project nor a new building permit application by the National Assembly had been submitted.