Cannabis farms send landlords’ profits up in smoke
Summary
Zurich UK reports a sharp rise in suspected or identified cannabis farm attendances by fire and rescue services, with incidents reaching a record level in 2024 and remaining high in 2025. The insurer says the associated claims can involve fire, electrical alterations, water damage, damp and mould, and structural changes, creating substantial reinstatement costs for landlords.
Why it matters
Residential property surveyors may encounter properties affected by cannabis cultivation where hidden damage, unsafe alterations and contamination risks are not immediately obvious. The article highlights the need for careful inspection, risk awareness and clear reporting where illegal use may have compromised building condition and safety.
Key points
- Suspected or identified cannabis farm incidents rose 218% from 2015 to 2024.
- Zurich says it has investigated £9.4m in cannabis farm-related claims since January 2022.
- Fire and rescue attendances remained near record levels in 2025, with 50 recorded incidents.
- Reported damage includes dangerous electrical alterations, water damage, damp and mould, and structural concealment works.
- The issue is increasingly linked to rented properties and vacant commercial premises.
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