Does the Palais du Midi permit promise rehabilitation—or organised dismantling?

Brussels urban groups mobilised around the Palais du Midi on 5 July after Urban.brussels

The permit covers more than the tunnel itself. According to the official Metro 3 project notice, it authorises the removal of the interior, the subsequent reconstruction of shops and educational, sporting and cultural facilities, two public spaces in the courtyards, and renovation of the existing façades. Work covered by the permit is provisionally scheduled from December 2026, although the Brussels public transport operator STIB has not published a precise construction timetable and further legal action remains possible.

Audrey Henry, Brussels Secretary of State for Urban Planning, and Ans Persoons, Brussels Secretary of State for Heritage and Urban Renewal, presented the permit as a compromise between mobility and conservation. The conditions require the historic façades to be retained and restored, original joinery and notable ironwork to be preserved, the roofs of the northern wing to survive, and the Passage du Travail to remain legible within the rebuilt complex. Persoons said the government had decided not to protect the entire building formally, but had “certainly not” decided to destroy it. In the government’s frame, the permit protects the elements that give the Palais du Midi its identity while permitting an improved building to emerge.

The vocabulary matters because the intervention is extensive. The 19th-century complex, close to Brussels-Midi station, has long combined shops with schools, sports clubs and cultural activities. The authorised method leaves important external and architectural features in place but removes much of the occupied interior so that the tunnel can be excavated from above. ARAU director Marion Alecian therefore argues that calling the operation rehabilitation obscures the loss of what heritage organisations describe as the building’s social fabric as well as its physical substance.

The tunnel is the missing section between the future Toots Thielemans station and the existing premetro infrastructure towards Anneessens. STIB says it would allow tram lines 4 and 10 to travel beneath the Palais du Midi and reduce pressure at the nearby Lemonnier junction. The northern extension of Metro 3 towards Bordet has meanwhile been paused for technical, financial and strategic reassessment, according to Beliris. That distinction is central: the permit may help complete a useful southern tram connection even if a full north–south metro line is not built on the timetable once envisaged.

The present impasse began when work on the roughly 120-metre tunnel section ran into stability and groundwater problems in 2022. The site lies in the former Senne valley, where the soil proved more heterogeneous than investigations had indicated. The regional government concluded in 2023 that removing the interior and excavating from above offered the most technically reliable route. It then adopted a special ordinance shortening the permit procedure.

That attempt to accelerate the dossier exposed a deeper institutional problem. In January 2025, Belgium’s Constitutional Court annulled the special Brussels ordinance because the differentiated procedure was not adequately justified, while temporarily maintaining its effects to avoid further disruption and expense. The judgment illustrates the division of competences: planning, regional mobility and built heritage are Brussels regional responsibilities; the courts review legality; and Beliris, a federal–Brussels cooperation body, manages other parts of the wider Metro 3 programme. This is not an EU decision, although European heritage organisation Europa Nostra previously identified the building as endangered.

A permit issued in August 2025 became entangled with a renewed application to protect the building. In December 2025, Belgium’s Council of State suspended the administrative decision that had declared that protection request inadmissible. The Brussels authorities subsequently rejected classification in May 2026 and Urban.brussels granted the modified permit the following month. The sequence explains why campaigners regard litigation and heritage procedure as unfinished terrain rather than a closed chapter.

ARAU, BRAL and their allies also dispute the transport case. Their Prémétro+ proposal advocates operational changes and targeted upgrades to increase capacity without constructing the tunnel beneath the Palais du Midi. They describe that approach as faster, less destructive and better matched to Brussels’ strained finances. The regional government and STIB answer that the permitted link would remove a persistent bottleneck and complete infrastructure on which substantial public money and years of disruption have already been spent.

Residents and traders encounter the argument less abstractly. Works around Stalingrad Avenue have disrupted access and commerce for years, while former users of the Palais du Midi have had to relocate. Some local traders have asked for a dedicated task force rather than simply supporting or rejecting the tunnel. Their concern is that another long building phase could deepen the neighbourhood’s losses, even if the eventual reconstruction restores activity.

The controversy falls within an unusually prolonged Brussels political cycle. The regional executive remains in caretaker mode following the June 2024 election, limiting its room for new policy but not preventing the administration from processing permits under existing decisions. That makes the case politically awkward: authorising an irreversible intervention would bind the next full government, while continued delay also carries financial and neighbourhood costs.

The next test is consequently practical and legal. STIB must provide a credible programme for dismantling, tunnelling, reconstruction and the return of local functions; the authorities must demonstrate that the permit’s heritage conditions can be enforced throughout a long construction sequence; and opponents must decide whether to seek suspension or annulment. Until those questions are settled, “rehabilitation” and “dismantling” are not merely competing slogans. They describe two different judgments about what, precisely, makes the Palais du Midi worth saving.