Demolition and Asbestos Removal: Why Part of Your Liability Cover May Be Claims-Made
Demolition and asbestos removal often go hand in hand. The liability behind each can be structured differently. What that means at renewal.
By Jack O'Hagan, Co-Founder & Insurance Broker
Published 13 August 2026 · 4 min read
In this guide
Demolition and licensed asbestos removal work often go hand in hand.1 That’s exactly where a real gap in cover can hide. Public liability for general demolition work is typically occurrence-based. Asbestos liability is commonly written differently: on a claims-made basis, with its own retroactive date. Missing that difference is how a business can end up with continuous insurance on paper and a genuine gap underneath it.
Claims-made
how asbestos liability is commonly written, unlike most general public liability
A retroactive date
the point historical work stops being protected if it isn't preserved
Decades, not years
how long an asbestos-related claim can take to actually surface
Why does asbestos liability commonly get written on a claims-made basis?
Asbestos-related illness can take decades to appear after exposure, which makes it a genuinely long-tail liability. Insurers are generally reluctant to stay on risk indefinitely for an event that might not produce a claim for 20 or 30 years. Asbestos liability is more commonly written claims-made instead, where continuity of cover does the work that occurrence-based cover would otherwise do on its own.
A claims-made policy protects historical work through continuity, not through the date the work happened. Break that continuity and the history it was meant to cover can fall through.
What’s the difference between claims-made and occurrence-based cover?
Occurrence-based cover responds according to when the incident actually happened, provided a policy existed at that time, regardless of when the claim surfaces later. Claims-made cover works differently. It responds according to when the claim is actually made and notified. It generally needs continuous cover reaching back to a retroactive date for older work to stay protected. A demolition business carrying general public liability on an occurrence basis and asbestos liability on a claims-made basis is effectively running two different protection mechanisms inside the same overall program.
Can a demolition business end up with a gap in cover?
Yes. This is a real, practical risk. It isn’t a technicality.
A gap opens when continuity breaks. That could be a lapsed policy. It could be a change of insurer that doesn’t carry over the old retroactive date. It could simply be a renewal that doesn’t happen without a break in between. Any one of these can leave historical asbestos work sitting outside what the current policy actually responds to, even though the business holds active cover today. Nobody necessarily made a mistake at the time it happened.
That’s exactly why this tends to surface at renewal. A broker reviewing the full claims and cover history finds it, not the current policy looked at on its own. A business can genuinely believe its asbestos exposure has been continuously covered for years. The full history is what actually shows the window that falls outside the current retroactive date.
What should a demolition business check at renewal?
Three things specifically: whether the asbestos component of the program is occurrence-based or claims-made, what retroactive date applies if it’s claims-made and whether there’s been any gap in continuous cover since that date. This is worth reviewing at every renewal, not only when cover is first arranged, since a gap can sit undetected for years before it actually matters. Exact structure and wording varies by insurer, so confirming it directly matters more here than for most other covers.2
Key Takeaways
- General demolition liability is typically occurrence-based. Asbestos liability is commonly claims-made. The two can sit differently within the same program.
- Claims-made cover generally needs continuous cover back to a retroactive date for historical work to stay protected.
- A break in continuity, an insurer change, a lapse, can leave historical asbestos work outside what any current policy responds to.
- Demolition and asbestos removal are commonly quoted together. That doesn't mean they're structured the same way underneath.
- Checking the retroactive date and continuity of cover belongs at every renewal, not just when a policy is first arranged.
If your business carries out demolition and asbestos removal, Cipher can review how your current program is actually structured and whether the continuity is where it needs to be. See our full High Risk Trades page for how these trades fit alongside the others we work with, or get in touch directly.
The information in this article is general in nature and does not constitute legal, financial or insurance advice. Please speak with a qualified adviser about your specific circumstances.
Footnotes
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Insurance explained, Insurance Council of Australia ↩
Not sure how this applies to your situation?
Frequently asked questions
Is asbestos removal liability cover claims-made or occurrence-based?
Asbestos liability is commonly written on a claims-made basis, unlike most general public liability cover, which is occurrence-based. This matters specifically for demolition businesses that also carry out asbestos removal, since the two activities can end up structured differently within the same overall program.
What's the difference between claims-made and occurrence-based liability cover?
Occurrence-based cover responds according to when the incident actually happened, regardless of when a claim is later made, provided a policy existed at that time. Claims-made cover responds according to when the claim is actually made and notified. It generally needs continuous cover back to a retroactive date for older work to still be protected.
Can a demolition business end up with a gap in asbestos liability cover?
Yes. This is a real risk worth checking rather than assuming is fine. If a claims-made asbestos liability policy lapses, changes insurer without preserving the retroactive date or simply isn't renewed continuously, historical asbestos work can fall outside what any current policy actually responds to, even though the business holds active cover today.
Why does asbestos liability commonly get written on a claims-made basis?
Asbestos-related illness can take decades to appear after exposure, which makes it a genuinely long-tail liability. Insurers are generally reluctant to stay on risk indefinitely for an occurrence that might not produce a claim for 20 or 30 years, so asbestos liability is more commonly written claims-made, with continuity of cover doing the work that occurrence-based cover would otherwise do.
Are demolition and asbestos removal covered under the same policy?
These two activities are commonly quoted together, since a large share of demolition work involves an asbestos component. Whether they sit on one policy or separate covers depends on the insurer and the specific scope of work. Whether each is occurrence-based or claims-made is a separate question worth confirming directly rather than assuming.
What is a retroactive date and why does it matter for asbestos cover?
A retroactive date is the point a claims-made policy will look back to when assessing whether historical work is covered. Work carried out before that date generally isn't protected by the current policy, even if a claim relating to it is made today. Keeping the retroactive date consistent across renewals and insurer changes is what protects historical work going forward.
What should a demolition business check at renewal to avoid a cover gap?
Three things specifically: whether the asbestos component of the program is occurrence-based or claims-made, what retroactive date applies if it's claims-made and whether there's been any gap in continuous cover since that date. This is worth reviewing at every renewal, not just when first arranging cover, since a gap can appear later without anyone making an active mistake at the time.
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Where this guide fits
Business Insurance
This guide sits alongside our Business Insurance cover pages.
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Jack O'Hagan
Co-Founder & Insurance Broker
Jack spent 6+ years across law, finance and insurance, seeing the impact insurance can have on the growth of a business. With a strong focus on advocacy, he firmly believes insurance broking does not stop after the policy has been placed. It continues when a claim is lodged. He co-founded Cipher Insurance to help Australian businesses get the right broker experience.