The global construction insurance market is in the midst of a delicate recalibration as capacity increases and appetite grows, yet underwriters remain sharply attuned to a shifting landscape of risk – from climate catastrophe to cyber intrusion.
According to Aon’s 2025 Global Construction Insurance and Surety Market Report, a “cautiously optimistic” sentiment prevails across most lines, with insurers buoyed by demand from major infrastructure schemes and the rise of energy and high-tech manufacturing projects. Yet this optimism is tempered by macroeconomic headwinds, climate volatility, and the ever-evolving liability landscape.
In a notable shift, a bifurcated market has developed. Projects deemed lower-risk – particularly those with clean claims histories and robust risk mitigation – are enjoying favourable pricing and broader coverage terms. However, projects exposed to natural catastrophe zones, complex civil engineering, or past losses face tightening terms and premium inflation.
London’s construction underwriters, long known for their capacity to absorb complex global risk, are leaning into the momentum. Several new entrants are expanding into the contractors all-risk (CAR) and erection all-risk (EAR) space, with appetite high for lead positions on major infrastructure undertakings – provided loss activity remains subdued.
The London Market, the report notes, remains a “go-to” hub for large and long-duration projects, with policies exceeding 10 years increasingly common. However, insurers are demanding clearer, more detailed underwriting submissions – a non-negotiable in a market where flexibility comes at the price of discipline.
The surge in weather-related disasters – causing over $368 billion in economic losses globally in 2024 – has spurred insurers to re-evaluate their catastrophe modelling, particularly in regions exposed to hurricanes, floods, and wildfires.
Parametric solutions and alternative risk transfer structures are gaining traction. In Australia and North America, where full-limit natural catastrophe cover is increasingly hard to place, bespoke ART and XOL structures are being employed to bridge protection gaps.
In EMEA, particularly Italy and Spain, heavy flooding has hardened terms for projects located near rivers or in flood plains. Yet even here, capacity remains sufficient – aided by government investment in infrastructure and the energy transition.
Surety continues to expand globally, with Aon projecting the market will reach $30 billion by 2030. Regulatory changes and the need for off-balance-sheet solutions have made surety a preferred alternative to traditional bank guarantees. Growth markets include the UK, where Basel IV rules are nudging banks away from capital-heavy guarantees, and Asia, particularly India and China, where infrastructure needs are colossal.
ESG considerations are also now firmly embedded in surety underwriting. Insurers are increasingly evaluating environmental and governance performance alongside financial health.
Digitisation in construction – through BIM, IoT, and remote monitoring – has elevated cyber risk to a front-and-centre concern. Insurers are refining exclusions and adapting cover to meet both project-specific and corporate technology exposures. In markets such as Australia, affirmative cyber cover and broader sub-limits are starting to appear – a trend London brokers are watching closely.
Meanwhile, the rise in tech-driven projects, such as hyperscale data centres, is creating underwriting challenges due to concentrated risk, long durations, and significant power demands. Insurers are responding by developing specialist underwriting pools and bespoke clauses.
Across construction casualty lines, London remains competitive, particularly for commercial infrastructure and rolling OCIP/CCIP programmes. However, capacity trimming – notably in New York and on high-risk civil works – is tightening pricing for certain project classes.
Professional indemnity markets are showing signs of softening. The UK and EMEA regions have seen 5-10% rate reductions for clean accounts, though claims inflation and social inflation continue to unsettle underwriters. The rise of litigation funders, even in traditionally conservative markets, is also on insurers’ radar.
Aon’s report urges risk managers and brokers to “start early” when securing coverage, particularly for complex or catastrophe-prone builds. “Insurers are open for business,” it notes, “but they are demanding discipline, transparency, and documented risk controls.”
With megaprojects in energy, tech and infrastructure sectors proliferating, and regulatory reforms shaping demand, construction insurance looks set for a growth year – but only for those prepared to navigate its growing complexities.
