Luxembourg Office Demand Slumps 50% as Tenants Seek Quality Over Space

Occupier demand halves as companies hold back on expansion

Office leasing activity in Luxembourg fell sharply in the first half of 2026, with total take-up dropping to 51,789 m² – less than half the volume recorded in the same period a year earlier. According to JLL, the average transaction size shrank from 1,035 m² to just 602 m² over the period, signalling a marked shift from expansion to consolidation among corporate tenants. Jonathan Morand, Head of Office Agency at JLL Luxembourg, attributed the decline to “widespread volatility and multiple geopolitical and economic uncertainties” eroding business confidence.

Despite the demand slump, the market’s chronic undersupply of high-quality space kept upward pressure on rents. Vacancy inched down to 3.6% at mid-year, far below the European average of 9.5%. Prime headline rents rose 4.9% to an average of €43/m²/month, with a new CBD record of €55. Pierre-Paul Verelst, Head of Research BeLux at JLL, noted that tightening energy-efficiency requirements are another factor driving up achievable rents, as landlords pass on the cost of compliance.

The market is expected to show greater resilience than many peers on the continent, Sébastien Bequet of Cushman & Wakefield said, but the real inflection point lies ahead. Bequet warned that several major institutional and private occupiers are likely to release large blocks of space onto the market simultaneously in 2028–2029, setting up what he called “the Grand Duchy’s first real test of balance between supply and demand.”

Why Luxembourg's office rents are climbing despite the slowdown

The flight to quality and its price tag

Tenants are not simply cutting space; they are trading up. The data confirms a persistent “flight to quality”: occupiers are targeting the best-connected locations and buildings with strong ESG credentials, even at a premium. Because new supply remains limited, the mismatch between rising expectations and available stock is pushing prime rents higher even as overall leasing volumes contract. This rewards owners of top-tier assets but leaves landlords of older, less sustainable buildings facing both softer demand and a growing financing barrier – banks are reluctant to fund transactions involving properties without a safe profile, Verelst said.

Investor selectivity: safety over yield

An Inowai survey of investors conducted before the Iran-US conflict showed cautious optimism, but not yet a recovery. Some 76% of respondents view Luxembourg as a primary or opportunistic market, with family offices especially active. Offices remain the most sought-after sector, and three-quarters of investors now prioritise ESG compliance, with 18% willing to pay a premium for certified assets – a sharp increase from the year before. “Capital remains available but is invested much more selectively than before 2022,” Bequet said. Investors, he added, are increasingly looking beyond yield for protection against regulatory, energy and rental risks, which reinforces the bifurcation between best-in-class and everything else.

The 2028–2029 shadow supply

Bequet’s warning about a looming supply wall is significant. If several large-scale occupiers indeed vacate their current premises at the same time, the market will absorb a volume of secondary space that has not been seen in Luxembourg for years. That would challenge the prevailing narrative of structural undersupply and could depress rents outside the prime segment. The timing coincides with a normalisation of hybrid working patterns and a potential cyclical slowdown, making the 2028–2029 window a pivotal moment for anyone holding or developing office assets in the country today.

Positioning for the 2028–2029 supply test

• For office landlords: Evaluate how your building stacks up under ESG criteria. With 75% of investors now prioritising compliance and banks refusing to finance non-safe profiles, retrofitting may be a prerequisite to a sale or refinancing before 2028.
• For corporate tenants: The current window offers more bargaining power in prime buildings willing to lock in long leases, but the quality premium is climbing (€55/m² in the CBD). Consider whether your space needs can be met through densification rather than relocation ahead of the 2028–2029 supply surge.
• For investors: Prime, certified offices still command a premium, but the repricing and repositioning phase described by Inowai means secondary assets carry significant liquidity risk. Family offices and value-add buyers are betting on repositioning plays; be mindful that the exit window may narrow when the 2028 supply hits.
• For banks and lenders: The reluctance to finance non-prime assets is already shaping deal flow. Tightening standards in 2026 may protect portfolios today, but an oversupply of secondary space in 2028–2029 could strain borrowers who cannot upgrade.