Insurance Clauses in Commercial Leases: Who Insures What Between Landlord and Tenant

When a fire damages a leased factory, shop or office, the parties reach for their insurance policies. But the policies are downstream. The document that actually allocated the risk is the lease, signed months or years earlier, and it decided who was to insure the building, who was to insure the fit-out and contents, who bears the loss of rent, and who must reinstate. The insurance is only the funding mechanism for obligations the lease already assigned.

This is why lease insurance clauses are a risk-management matter, not a legal formality to be skimmed. A lease that allocates the insurance obligations clearly, and that lines up with the policies both parties actually buy, produces a clean recovery after a loss. A lease that is vague, internally inconsistent, or out of step with the cover in force produces a dispute at exactly the moment both parties are least able to absorb one, with a damaged premises, a suspended business and two insurers each pointing at the other side's cover.

The corpus already covers the loss-of-rent claim itself, the downstream event. This piece is about the upstream allocation: how a commercial lease should divide the insurance obligations between landlord and tenant, the specific clauses that do the dividing, the subrogation question that decides whether a negligent tenant is still on the hook, and the gaps that reliably surface after a fire when the lease and the policies were never reconciled. It is written for both sides of the table, because the allocation only works if it is coherent from both.

The first thing a lease should settle is the division of the property itself into what the landlord insures and what the tenant insures, because a leased premises is not one insurable thing but several.

The common allocation runs like this. The landlord insures the structure and the base building: the shell, the structural elements, the common areas and usually the landlord's plant such as lifts and central services. In many commercial leases the landlord takes out this cover and recovers the premium from the tenant through an insurance rent or service charge, so the landlord controls the policy while the tenant pays for it. The tenant insures its own fit-out, improvements, trade contents, stock, plant and machinery, because these are the tenant's property and its business, and the landlord's building policy does not extend to them.

The trouble lies in the middle. Tenant improvements and fixtures, the fit-out a tenant installs, sit in a grey zone: they are physically part of the building but were paid for and installed by the tenant. If the lease does not say clearly who insures them, both parties may assume the other does, and neither insures them at all. The lease should name, explicitly, which party insures the tenant's improvements and fixtures, and to what value, so that a fire does not reveal an uninsured layer between the base building and the movable contents. The same clarity is needed on boundary items: signage, external plant, tenant-installed services. Every physical element of the premises should sit clearly inside one party's insurance obligation, with nothing falling between them.

Once the lease says who insures what, it usually also says how each party's interest in the other's cover is protected, because landlord and tenant each have an interest in property the other insures.

Where the landlord insures the building but a lender has financed it, the lender's interest is protected by naming it, commonly through an agreed bank clause or a mortgagee endorsement, so that a building claim accounts for the financier's interest. Where the lease requires it, the landlord may be named on the tenant's cover, or the tenant on the landlord's, as a loss payee or as having a noted interest, so that the party with the economic stake in a particular loss is recognised on the policy that responds to it.

A lease may go further and require composite or joint-names cover, where both landlord and tenant are named insureds on the building policy. This has a consequence beyond convenience: where both are co-insured under the same policy for the same interest, the insurer generally cannot pursue one co-insured for a loss it has paid the other, which bears directly on the subrogation question in the next section. The lease should be explicit about whose interests are noted on which policy and in what capacity, because a bare requirement to insure without a requirement to note the counterparty's interest can leave the party who did not buy the policy without any direct claim on it. Naming the interest is what converts the other side's insurance from a private arrangement into cover the noted party can actually rely on after a loss.

The sharpest insurance question in any lease is what happens when the tenant causes the loss. If the landlord's building insurer pays the landlord for fire damage the tenant negligently caused, that insurer, standing in the landlord's shoes, may seek to recover its outlay from the tenant by subrogation. The tenant that thought the building was insured discovers it is being sued for the whole loss.

Whether that happens turns on the lease and the policy together. Many commercial leases address it, because a tenant paying the insurance rent reasonably expects not to be pursued by the insurer of a policy it funded. The lease may provide that the landlord will insure in joint names, which as a co-insured typically prevents the insurer recovering against the tenant, or it may contain an express waiver of subrogation under which the landlord procures that its insurer waives any right of recovery against the tenant, at least for insured perils. Where the lease secures either, the tenant's negligence does not expose it to the building insurer's recovery for an insured loss, which is usually what both parties intend when the tenant is contributing to the premium.

The reciprocal point matters for landlords. A waiver of subrogation given too broadly can strip the landlord's insurer of a recovery it would otherwise have, which the insurer may price for or resist, so the waiver should be scoped to insured perils and to the risks the parties actually intend to allocate to insurance, not written as a blanket immunity for the tenant.

A fire does not only damage the premises; it stops the tenant using them, and the lease has to decide what happens to the rent while the premises are unusable. This is where the lease and the loss-of-rent insurance have to interlock.

Most commercial leases contain a rent cessation or rent suspension clause: while the premises are damaged by an insured peril and cannot be used, the rent (or a fair proportion of it) abates until the premises are reinstated, often for a capped period. That protects the tenant, who should not pay rent for premises it cannot occupy. But it exposes the landlord, who loses its rental income precisely when it is funding reinstatement, which is why the landlord insures its loss of rent under the building programme, usually for an indemnity period matched to the likely reinstatement time.

The two mechanisms must be consistent. The lease's rent cessation period and the insurance's loss-of-rent indemnity period should align, so that the rent the lease suspends is the rent the policy replaces, over the same timeframe. A mismatch, where the lease suspends rent for longer than the insurance replaces it, or where the indemnity period is too short for a realistic reinstatement, leaves the landlord funding a gap. The clause should also be clear on what triggers cessation (insured perils only, or wider), whether cessation is total or proportionate to the damage, and what happens if the damage was caused by an uninsured peril or by the tenant in circumstances the cover excludes, because those edge cases are where rent-cessation disputes concentrate. Aligning the lease clause with the policy at drafting is far cheaper than arguing the mismatch after a fire.

The final thing the lease allocates is the duty to reinstate, and this is where the largest disputes surface, because reinstatement is expensive, slow and sometimes impossible.

The lease should say who is obliged to reinstate after an insured loss (usually the landlord, funded by the building insurance), within what timeframe, and to what standard. It should also address the harder cases: what happens if the insurance proceeds are insufficient because the building was under-insured, who funds the shortfall, and what happens if reinstatement is prevented, for instance by planning refusal, by the damage being uninsured, or by the site becoming unviable. Well-drafted leases give one or both parties a right to terminate where reinstatement cannot be achieved within a set period, so the parties are not locked into a dead lease over a destroyed building.

A related failure is the landlord under-insuring the building. Because the tenant often pays the insurance rent but the landlord controls the policy, the tenant depends on the landlord insuring the building to full reinstatement value, yet has no visibility of the sum insured. A tenant with a real economic stake in the building being properly reinstated should have a lease right to see evidence of the cover and the sum insured, so that the landlord's under-insurance does not become the tenant's reinstatement problem. The reinstatement clause and the insurance clause are two halves of the same promise, and they fail together when they are drafted apart.

The allocation only works if both parties review the insurance clauses against the cover they will actually hold, before signing. The same checklist serves landlord and tenant, read from their respective chairs.

1. Property division. Confirm every physical element of the premises, structure, base building, tenant improvements, fixtures, contents and external items, sits clearly inside one party's insurance obligation, with nothing falling between.
2. Insurance rent. If the tenant funds the building cover through an insurance rent, confirm what the landlord is obliged to insure in return, and that the tenant can see evidence of the policy and the sum insured.
3. Noted interests. Check that each party's interest in the other's cover is noted where the lease requires it, and that any lender is properly named, so the party with the economic stake can rely on the policy.
4. Subrogation. Confirm whether the lease secures a waiver of subrogation or joint-names cover, scoped to insured perils, so a negligent tenant's exposure matches what both sides intended.
5. Rent cessation. Align the rent cessation period and trigger with the loss-of-rent indemnity period in the building policy, and check the treatment of uninsured perils.
6. Reinstatement. Confirm who reinstates, in what time, who funds an insurance shortfall, and what termination rights apply if reinstatement is impossible.

Run before signing, this review turns the lease from a document that quietly stores up an insurance dispute into one that funds the loss cleanly. The cost of the review is an hour of attention at drafting. The cost of skipping it is a fight between landlord, tenant and two insurers over a burnt-out premises, which is the outcome the clauses exist to prevent and the reason both sides should read them as risk-transfer terms rather than boilerplate.