Empira Group: The 'Green Value Gap' in German residential real estate
Empira Group has published a new research study on the economic implications of the energy transition in the German residential real estate market. Titled 'The Green Value Gap,' the study analyses under which conditions so-called Transition-to-Green (T2G) strategies create value – and where risks for investors arise.
The study’s key finding: The decarbonisation of residential real estate is no longer merely an ESG or compliance topic but is increasingly becoming a core economic factor. Energy efficiency and CO₂ intensity are already having a tangible impact on cash flows, valuations, refinancing conditions and exit liquidity of real estate investments.
Green Value Gap as a key steering metric
At the centre of the analysis is the so-called 'Green Value Gap,' which describes the difference between the required investment for energy refurbishment and the economically realisable benefits in the market. The study shows that not every energy-related measure automatically leads to value creation.
'The key question for investors is no longer whether to renovate, but where, when and to what extent energy measures make economic sense,' says Lahcen Knapp, Founder and Chairman of Empira Group.
Energy efficiency increasingly priced in by the market
The analysis demonstrates that energy efficiency is already being capitalised in the German residential market, particularly through pricing. Inefficient buildings are subject to significant discounts, which are likely to widen further in light of rising energy costs and increasing regulatory pressure.
On the rental side, however, the picture is more nuanced: the direct rental uplift remains limited. Instead, energy efficiency primarily translates into lower operating costs, improved affordability and more stable cash flows.
Attractive investment segment in the mid-efficiency range
According to the study, the most relevant investment segment lies in the mid-range of the building stock (EPC classes D and E). Here, clear transformation potential meets comparatively favourable economic feasibility.
Highly inefficient buildings (G/H) are often associated with disproportionately high capital expenditure and execution risks, while already efficient assets (A–C) offer limited upside potential.
Regulation, cost and timing as key drivers
The study highlights that regulatory developments at both EU and national levels are increasingly shaping the economic viability of real estate. CO₂ pricing, energy efficiency requirements and transparency obligations directly affect operating costs and investment decisions.
At the same time, timing is becoming a critical factor: increasing requirements are colliding with limited construction capacity and volatile cost dynamics.
T2G as an active investment strategy
Transition-to-Green is not understood as a standardised refurbishment programme, but as a differentiated, data-driven transformation strategy. Key success factors include:
- the relationship between capital expenditure and monetisable value
- the quality of data, planning and due diligence
- operational feasibility within existing buildings
- and local market conditions
The findings also show that professional investors can unlock additional value through integrated approaches – from analysis and execution to asset management.
Conclusion: Selectivity over standardisation
The Empira study concludes that Transition-to-Green offers significant value creation potential – but only under the right conditions. Blanket refurbishment strategies fall short. Instead, precise analysis, prioritisation and execution capabilities are essential.