The fire that tore through Grade II* listed Armathwaite Castle this week has highlighted one of the insurance market's most difficult property risks: vacant heritage buildings.
While the cause of the Cumbria blaze remains under investigation, the incident follows March’s major fires in Glasgow that exposed the complex insurance and legal challenges surrounding historic properties and the unique risks posed by mixed-use heritage sites.
For insurers, however, the latest fire is less a turning point than a reminder of why underwriting vacant heritage properties has always required exceptional scrutiny.
Many historic buildings now spend years in limbo while owners seek planning consent, redevelopment funding or viable long-term uses. During that period, insurers face the difficult task of insuring properties that can be both exceptionally valuable and exceptionally vulnerable. Earlier this year, the Grade II-listed Big Mill in Leek was destroyed by fire while awaiting redevelopment, illustrating the risks vacant heritage properties can face before restoration ever begins.
The wider challenge is reflected in Historic England's own data. Its fire safety guidance cites research showing that fire and rescue services attended more than 1,000 fire-related incidents involving listed buildings, World Heritage Sites, conservation areas and locally listed buildings in a single year. Historic England also warns that vacant historic buildings, particularly former mills and other large structures, are especially vulnerable to arson.
"There is a very low market appetite for unoccupied heritage properties," Simon Aitken, head of office at Lycetts, Newcastle, told Insurance Business.
He said underwriters expect extensive risk management measures before taking on what can amount to tens of millions of pounds in potential exposure.
The financial exposure extends well beyond the building itself. Unlike modern commercial properties, listed buildings often require specialist materials, traditional craftsmanship and extensive planning approvals before repairs can begin.
"The reinstatement will be just eye-watering," Aitken said. "When it comes to heritage, you've got really specialist materials, you've got traditional craftsmanship, which is becoming rarer, so more expensive, and then you've got all the planning side of it as well."
For vacant heritage properties, prevention has become as important as insurance itself. Aitken said insurers expect vacant heritage buildings to be actively managed through measures such as regular inspections, monitored fire alarms, security systems and, where possible, some level of occupancy. He added that advances in fire detection, CCTV and water monitoring technology have strengthened owners' ability to protect historic properties over the past decade.
Even so, Aitken does not believe the latest fire will fundamentally change insurers' approach to underwriting heritage properties.
"They're reinforcing lessons that the market has known for many years," he said. "It's a reminder why these questions are so important."
Ultimately, he argues that owners should not view insurance as their primary safeguard.
"People shouldn't rely on insurance as their first line of defence," Aitken said. "Preventing loss is the first primary objective."
By prioritising prevention and robust risk management, owners are not only better placed to protect irreplaceable buildings, but are also more likely to secure appropriate cover on affordable terms.
