Block Insurance With Empty Flats, HMOs or Short Lets
A block of flats insurance policy is priced on how the flats are occupied, so empty flats and unusual occupancies need to be declared. Insurers ask how many flats are owner-occupied, let on standard tenancies, let as HMOs, used for short lets or serviced accommodation, let to local authorities or housing providers, or empty. Vacant flats raise the risk of undetected leaks, break-ins and arson, and many policies restrict cover once a flat has been empty beyond a set period. HMO flats and short lets bring higher turnover and fire risk. None of these makes a block uninsurable, but a mainstream block policy may not accept them. The fix is an accurate occupancy schedule placed with a market that accepts it. Miller & Partner places blocks with vacant units, HMO flats, short lets and housing-provider lets through Lloyd's syndicates and specialist MGAs.
Key facts at a glance
- Block insurance is priced on occupancy. The insurer needs to know how every flat is used.
- Vacant flats often trigger unoccupancy conditions, commonly after 30 to 60 consecutive days.
- HMO flats and short lets are the occupancies most often excluded or loaded.
- Occupancy changes during the year may need to be notified, depending on the policy wording.
- A large share of empty flats, such as during refurbishment, can change the whole building's terms.
- Specialist markets accept occupancy mixes that standard block schemes decline.
Why does occupancy matter for block insurance?
Most block policies ask for an occupancy breakdown at inception and renewal. Getting it wrong, or letting it drift out of date, is one of the main reasons block claims are challenged. See our guide to policies voided for non-disclosure.
Which occupancies do block insurers ask about?
| Occupancy | Why insurers ask | What helps |
|---|---|---|
| Vacant flats | Undetected leaks, break-ins, arson and squatting | Regular inspections, services isolated, doors secured |
| HMO flats | More occupants, more cooking and more fire risk | HMO licence, fire doors, interlinked alarms. See large HMO insurance |
| Short lets and serviced accommodation | High turnover, guests unfamiliar with the building | Lease consent, house rules, minimum stays. See short lets in leasehold flats |
| Housing provider and temporary accommodation lets | Turnover and how the flats are managed | Management agreement, inspection regime, provider's own cover |
| Flats under refurbishment | Contractors on site, hot works, empty units | Contract works cover, hot work permits, site security |
What happens when a flat in the block is empty?
Check the unoccupancy clause in your policy and keep a simple log of empty flats and inspections. When a large share of the block is empty, for example during a refurbishment or before a sale, tell the insurer straight away, because terms for the whole building may change. See our guide to unoccupied property insurance.
Do we need to tell the insurer when occupancy changes?
The practical difficulty is that freeholders and managing agents often don't know how individual leaseholders use their flats. Ask leaseholders to confirm their occupancy each year, and make consent for subletting, HMO use or short letting conditional on telling the managing agent.
This is where the Insurability Framework™ helps: an accurate, evidenced occupancy schedule lets us place the block on its real profile rather than a guess, which protects every leaseholder's claim.
How do I insure a block with vacant flats or mixed occupancy?
- Build an occupancy schedule. Each flat, how it is used, and whether it is empty.
- Survey the leaseholders. Confirm subletting, HMO use and short lets, and check them against the leases.
- Set an empty-flat routine. Inspections, services isolated and a log the insurer can see.
- Gather the fire evidence. Fire risk assessment for common parts, and HMO licences where relevant.
- Place it with the right market. A specialist broker presents the occupancy mix to underwriters who accept it.
Frequently asked questions
Usually, but often with conditions once a flat has been empty beyond a set period, commonly 30 to 60 days. Conditions may include inspections, isolating services and restricted perils. Check the unoccupancy clause.
Yes, though some standard block schemes exclude or load HMO flats. Specialist markets will accept them with evidence of licensing, fire doors and alarm systems.
Yes. Short lets increase turnover and are often excluded unless declared. The leases may also restrict them. Tell the insurer and check the lease position.
Ask the leaseholders. Annual occupancy confirmations and consent conditions for subletting help keep the schedule accurate. An out-of-date schedule is a common reason claims are challenged.
Yes. Some insurers ask specifically about lets to local authorities, housing associations or temporary accommodation providers. Declare them, together with the management and inspection arrangements.
Tell the insurer before works start. Terms for the whole building may change, and the contractors will need their own contract works and liability cover.
It can. Higher-risk occupancies can raise the block premium for everyone. Some leases allow extra costs caused by one flat's use to be recovered from that leaseholder; check the wording.
Yes. Lloyd's syndicates and specialist MGAs write blocks with vacant units, HMOs, short lets and housing-provider lets when the occupancy and controls are presented accurately.
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