Why funding alone isn't enough to make retrofit policy work
Improving the energy efficiency of the UK's housing stock has become a central policy priority. From reducing carbon emissions to tackling fuel poverty, the case for retrofit is clear. But despite growing ambition, progress in the private rented sector remains uneven.
Private landlords are often positioned as key actors in this transition. Yet in practice, many face a confusing and sometimes frustrating policy landscape. Schemes come and go, rules change, and delivery challenges persist. The result is a gap between policy ambition and what actually happens on the ground.
So why does retrofit policy so often struggle to deliver, particularly for landlords? Recent research comparing retrofit schemes across the UK, Ireland, France and Italy suggests that the issue is not simply the level of funding available. Instead, it is how schemes are designed and delivered that makes the difference.
A complex landscape for landlords
From a landlord's perspective, engaging with retrofit is rarely straightforward. Decisions involve high upfront costs, uncertainty about returns, and concerns about disruption to tenants and properties. These decisions are made within a policy environment that is often fragmented and evolving.
In the UK, schemes such as the Green Homes Grant have demonstrated how even generous financial support can fail if delivery mechanisms are overly complex or unstable. At the same time, uncertainty around future regulatory standards has led many landlords to adopt a 'wait and see' approach, delaying investment.
Different countries, different approaches
This is not just a UK problem. Across Europe, governments have experimented with a wide range of policy approaches, each with its own strengths and limitations. Indeed, looking across countries reveals that there is no single 'best' retrofit policy model. Instead, different schemes reflect different priorities and institutional contexts.
Some countries rely on centrally administered grants, providing a clear and consistent framework for applicants. Others use tax-based incentives, allowing property owners to recover costs over time. Supplier-led obligation schemes, meanwhile, aim to deliver improvements at scale by placing responsibilities on energy companies.
Each of these approaches has advantages. Grant-based schemes can reduce upfront costs and make retrofitting more accessible. Tax incentives can support long-term investment. Supplier-led models can reach large numbers of properties, particularly those occupied by lower-income households.
But each also involves trade-offs. Grants can be administratively demanding. Tax incentives may be less effective for those with limited taxable income. Supplier-led schemes can raise concerns about quality, accountability, and landlord control.
It's not just about money
One of the clearest findings from this comparative analysis is that financial support alone does not guarantee success. While funding is important, other factors often matter just as much — if not more. These include:
- Clarity and stability: Landlords are more likely to invest when schemes are predictable and operate over a sufficient timeframe.
- Administrative simplicity: Complex application processes can discourage participation, even where funding is available.
- Quality assurance: Confidence in contractors and installation standards is essential to reduce perceived risk.
- Alignment with regulation: Clear and credible regulatory signals can encourage earlier and more decisive action.
In several cases, schemes that offered high levels of financial support still struggled because these wider conditions were not in place. Conversely, more modest schemes have achieved steady uptake when they are simple, stable, and well integrated with regulatory frameworks.
Why design matters
These points suggest a broader lesson. Effective retrofit policy is not just about how much support is provided, but how that support is structured.
For landlords, retrofit decisions are shaped by a combination of financial considerations, practical constraints, and confidence in the policy environment. Poorly designed schemes can increase uncertainty and risk, even when they offer generous incentives.
This helps explain why some schemes have led to rapid but short-lived activity, while others have supported more gradual but sustained improvements.
Lessons for the UK
As the UK looks ahead to new initiatives, including the recently announced Warm Homes Plan, there is an opportunity to learn from both domestic experience and international practice. Several principles emerge:
- Provide long-term policy stability to allow landlords to plan investment.
- Reduce upfront financial barriers, particularly for smaller landlords.
- Ensure strong governance and quality control to build trust in delivery.
- Align incentives with regulatory expectations, so that compliance is supported rather than penalised.
- Invest in supply chain capacity so that delivery can keep pace with ambition.
These are not simple challenges, but they are critical if retrofit policy is to move from ambition to implementation.
Looking ahead
Retrofitting the private rented sector is essential to achieving wider energy and climate goals. But success will depend on recognising the realities landlords face and designing policies that work with, rather than around, those constraints.
The evidence suggests that better outcomes are possible. By focusing on how schemes are structured — not just how much funding is available — policymakers can create conditions that support more consistent, confident, and effective engagement from landlords.
