A structural paradox
Swiss pension funds have never invested so much in real estate. More than 40% of them plan to increase their allocation in 2026; among large and medium-sized funds, it is practically one in two (1). The average real estate share reaches 24.3% of portfolios, and 18% of funds already exceed the 30% ceiling set by OPP2 (Swiss occupational pensions ordinance) (2). With a policy rate of 0%, residential vacancy down to 1% and demand structurally exceeding supply, this asset class retains an indisputable relative appeal.
Yet this observation masks a deep paradox. The real estate rating of the Alliance Climatique Suisse (Swiss Climate Alliance) reveals that 75% of pension funds’ real estate investments are actively delaying the necessary decarbonisation. More than 60% of assets are held by institutions rated RED, meaning they have no published real estate sustainability strategy whatsoever. Less than 1% of the total volume is managed by funds described as “visionary”: 3 institutions out of around 105 assessed. The imbalance is all the more significant given that around one sixth of Swiss rental floor space belongs directly to pension funds (3).
The gradual erosion of value
The risk does not appear as a sudden shock. It operates through gradual erosion. The building sector accounts for 25% of national greenhouse gas emissions and consumes 40% of the country’s final energy. The renovation rate of the building stock stands at around 1% per year; the climate pathway would require more than three times that. Around 900’000 fossil-fuel heating systems are still in operation in the Swiss residential stock (4). For a fund holding 50 buildings, the current pace means that only one building is renovated every two years. Several per year would be needed. The gap between the required pace and the actual pace creates a cumulative climate liability which, year after year, translates into a financial liability.
Market signals are converging. According to EY’s Trendbarometer 2026, 93% of investors confirm that financing new residential projects remains difficult. 88% expect the new energy and climate regulations to trigger significant renovation needs (5). The polarisation between “green” and “brown” assets is accelerating: Minergie-certified properties command a price premium of 3% to 5% according to Swiss academic studies (6), and 42% of institutional investors say they are prepared to pay more for buildings with high energy performance (7). Energy-intensive properties, by contrast, are becoming both harder to refinance and harder to sell. For funds already close to the 30% regulatory ceiling, any loss in value of the direct portfolio weighs on the funding ratio, with direct repercussions for insured members.
A regulatory framework at a tipping point
The ESG landscape changed profoundly between 2024 and 2026. The ASIP (Swiss Pension Fund Association) 2024 standard structures sustainability reporting; nearly 9 out of 10 pension funds apply ESG approaches, and half of all pension assets are covered by a compliant report (8). As for collective investment vehicles, 100% of SWIIT products and 98.3% of KGAST products publish their environmental KPIs. Around 70% show a quantified reduction pathway aligned with CRREM 1.5 °C (9). The REIDA CO2 benchmark is establishing itself as the reference standard, following UBS’s withdrawal from GRESB (10).
The pressure is coming from three directions at once: regulators, asset management consultants and insured members. 94% of investors perceive growing pressure to integrate ESG into their decisions. At cantonal level, obligations are tightening: in the canton of Vaud, buildings rated F or G under the CECB (cantonal building energy certificate) with an energy reference area (SRE) above 750 m² must reach class D by 2035 (11). These constraints will extend further. The Alliance Climatique itself stresses that the absence of ambitious self-regulation could accelerate the adoption of binding legal provisions.
Substantial subsidies, a window that is closing
Public authorities are deploying unprecedented resources. The canton of Geneva is mobilising CHF 80 million in energy subsidies in 2026, CHF 10 million more than in 2025 (12). The canton of Vaud is allocating CHF 74 million, an increase of 22%. At federal level, CHF 607 million is available in 2026 for reduction measures. In 2024, 25’633 fossil-fuel or electric heating systems were replaced across the country, 84% of them by heat pumps (13). The replacement momentum is under way, but the volume remains insufficient in view of the target.
Wüest Partner estimates the total cost of the energy renovation of the Swiss building stock at CHF 228 billion. Complete renovation is not always profitable at the level of the individual building. Replacing heating systems alone, by contrast, represents an investment of CHF 52 billion with guaranteed profitability (14). The conditions for accessing subsidies are tightening year after year. Each year of delay means subsidies left unused and assets that continue to depreciate.
What leading institutions do
The few funds described as “visionary” share common characteristics: a structured renovation programme covering the entire portfolio over 5 to 10 years, a defined and published CRREM pathway, maximised use of photovoltaics, systematic replacement of fossil-fuel heating systems, and ESG integration into acquisition criteria. No asset is acquired without a prior analysis of its climate pathway. Tools such as Wüest Partner’s Carbon Due Diligence make it possible to objectify trade-offs at the level of each building: hold, renovate or sell (15).
The open question
The energy transition of the direct real estate portfolio is no longer a question of compliance. It is a question of measurable financial value over a 5 to 10-year horizon. Three quarters of institutions are not yet on the right pathway. The risk is collective; the opportunity for differentiation is individual.
The question now facing boards of trustees and fund management teams is no longer whether to begin the transition of their direct real estate portfolio. It is how fast the value of their assets erodes while they wait.
Eric