The concept of green rebuilding is rapidly moving from being seen as a niche concept for insurers, particularly in the property damage market. Traditionally, property insurance has been underpinned by the principle of indemnity, with policies designed to place the insured back into the position they were in prior to the loss, typically on a “like-for-like” basis. However, this approach is increasingly being challenged by the realities of climate change, regulatory intervention, and evolving policyholder expectations.
Green rebuilding reflects a broader shift in the built environment toward sustainability, resilience, and futureproofing. It encompasses a range of practices, including the use of energy efficient materials, low carbon construction techniques, and modern methods of construction such as modular or panelised building systems. In addition, it often involves improvements such as enhanced insulation, renewable energy installations, and smart building technologies. These measures are not simply environmentally desirable but are increasingly necessary in order to meet tightening regulatory standards.
Upcoming changes for insurers
For insurers, the regulatory backdrop is becoming more pressing. In particular, changes to Minimum Energy Efficiency Standards (MEES) and Building Regulations will require property owners to meet higher environmental standards during the reinstatement process.
Against this backdrop, the Prudential Regulation Authority’s Supervisory Statement SS5/25 introduces an important milestone. By 3 June 2026, insurers must have undertaken a detailed internal review of their exposure to climate-related risk and developed a credible plan to address any identified gaps.
This deadline represents a clear shift in the PRA’s expectations. Climate risk is no longer viewed as a peripheral ESG issue, or a “nice to have”; but as a core financial risk which must be embedded within governance, underwriting, risk management and capital planning. Insurers are expected to identify material physical risks (such as flooding and extreme weather), transition risks (arising from regulatory and market changes), and liability risks. These risks must be understood at board level and integrated into the firm’s overall business strategy.
Implications for green rebuilding
The implications for property insurance and green rebuilding are significant. Traditional policy wordings may not adequately respond to the increased costs associated with rebuilding to higher environmental standards. Green endorsements are therefore becoming more prevalent, providing cover for additional costs such as sustainable materials, certification requirements (for example BREEAM), and renewable energy installations. In some cases, these endorsements may also relax the traditional rule against betterment, allowing insurers to fund upgrades rather than strict like-for-like reinstatement.
However, these developments also create new risks and potential areas of dispute. Insurers must carefully consider issues such as the potential for underinsurance where rebuilding costs increase, the impact on business interruption periods due to longer construction timelines, and the extent to which enhanced “green” reinstatement costs are recoverable from third parties in subrogation. From a legal perspective, principles such as the remoteness of damage and mitigation of loss will continue to be important in determining recoverability.
Prepare for the June 2026 deadline
In this context, the PRA’s June 2026 deadline is more than a compliance exercise. It is a catalyst for insurers to reassess how climate risk, and particularly the concept of building back better, is reflected within their products, underwriting approaches and claims handling practices.
Insurers who respond proactively may be able to differentiate themselves in the market, aligning policyholder expectations with regulatory duties. Those who do not, risk finding that traditional policy wordings and assumptions are increasingly misaligned with the demands of a low-carbon, climate-resilient future.
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