A national quick-service restaurant operates in a triple net leased standalone building. The NNN lease requires the tenant to carry property insurance on the structure at replacement cost. When a kitchen fire causes $600,000 in structural damage, the landlord assumes the tenant's policy will respond. But the tenant's property policy covers business personal property only-not the building. The building owner's policy has a $100,000 deductible and specifically excludes "landlord-leased structures where tenant is contractually responsible for insuring the structure."
Six hundred thousand dollars of damage. Neither party's insurer willing to pay primary. Eighteen months of litigation.
The NNN lease said the tenant was responsible for the structure. The COI said the tenant had property insurance. Nobody verified that the property insurance covered the structure.
What NNN Leases Actually Transfer to Tenants
In a triple net (NNN) lease, the tenant pays base rent plus:
- Property taxes on the leased premises
- Building insurance premiums (or maintains their own coverage)
- Maintenance and repair costs for the structure
But "pays insurance premiums" and "carries adequate insurance" are not the same thing. Some NNN leases require the tenant to reimburse the landlord for the landlord's own property insurance premiums. Others require the tenant to independently carry property insurance on the structure. These are fundamentally different arrangements.
Critical: Before accepting any tenant property insurance in an NNN context, the landlord must read the lease to determine which structure applies.
NNN Insurance Responsibility Matrix
| Insurance Type | Typically Landlord | Typically Tenant | Varies by Lease |
|---|---|---|---|
| Building / Structure Property Insurance | ✓ (reimburse model) | ✓ (tenant-insured model) | Often negotiated |
| Tenant's Business Personal Property | - | ✓ | - |
| Tenant Improvements | - | ✓ | Shared if landlord-funded |
| Commercial General Liability | - | ✓ | - |
| Workers' Compensation | - | ✓ | - |
| Commercial Auto | - | ✓ | - |
| Umbrella / Excess | - | ✓ | - |
| Landlord's Umbrella | ✓ | - | - |
| Loss of Rents / Business Interruption | ✓ | ✓ (separate) | Both should carry |
| Boiler and Machinery (Equipment Breakdown) | Negotiated | Negotiated | - |
| Environmental / Pollution | Negotiated | Negotiated | - |
The Two Models for Building Property Insurance in NNN Leases
Model 1: Landlord-Carried, Tenant-Reimbursed
The landlord maintains the building property policy. The tenant pays the premium as part of NNN expenses. This is the cleaner model: the landlord controls the policy, knows what it covers, and ensures the building is adequately insured.
Under this model, the landlord's COI verification focus is on tenant's liability insurance, workers' comp, and umbrella-not on building property (since the landlord holds that policy).
Model 2: Tenant-Carried Building Insurance
The tenant is required to carry property insurance on the structure. This is riskier for the landlord because:
- The landlord must verify the policy actually covers the structure-not just the tenant's personal property
- The landlord must be named as an additional insured or loss payee on the building property policy
- The policy limits must reflect the current replacement cost of the building-not a fixed number from lease execution that may be years out of date
- The landlord must track policy renewals and confirm the tenant maintains the policy
Under this model, the COI verification must include:
- Confirmation that "commercial property" coverage includes the structure (not just BPP)
- Confirmation of replacement cost basis (not ACV, which depreciates)
- Landlord named as loss payee or additional insured on the property policy
- Coverage limit equal to or exceeding current building replacement cost
- Waiver of subrogation in favor of landlord
Liability Insurance in NNN Leases
Regardless of which property insurance model the NNN lease uses, the tenant always carries all liability insurance. Standard NNN requirements:
| Coverage | Typical NNN Minimum |
|---|---|
| Commercial General Liability | $2M per occurrence / $4M aggregate |
| Workers' Compensation | Statutory |
| Employers' Liability | $500K each accident |
| Commercial Auto | $1M CSL |
| Umbrella / Excess | $3M-$5M |
| Liquor Liability (if applicable) | $1M per occurrence |
The landlord must be named as an additional insured on the CGL and umbrella policies on a primary and non-contributory basis.
Loss of Rents vs. Business Interruption: Overlapping but Separate
In an NNN structure, the landlord should carry loss of rents insurance-which replaces rental income if the property is destroyed and the tenant can't occupy. The tenant should carry business interruption insurance-which replaces the tenant's lost revenue.
Many landlords assume the tenant's business interruption coverage protects the landlord's rent stream. It doesn't. Business interruption covers the tenant's lost profits. If the tenant walks away from the lease after a casualty, the landlord's only protection is their own loss of rents coverage.
NNN Tenant Improvement Insurance
Who insures the tenant improvements in an NNN lease? This depends on who funded them:
- Landlord-funded TIs: The landlord should insure the improvements and require the tenant to maintain the building as a whole at replacement cost
- Tenant-funded TIs: The tenant insures through "betterments and improvements" coverage; the landlord should confirm coverage extends to the full scope of work performed
For major TI work-buildouts exceeding $500,000-require a project-specific builders risk policy during construction, naming both landlord and tenant as insureds.
The Post-Renewal Risk in NNN Leases
NNN leases often run 10, 15, or 20 years. A coverage minimum that was adequate at lease execution may be severely inadequate a decade later due to:
- Building value appreciation (replacement cost has increased)
- Inflation in construction costs
- Tenant business growth (more employees, higher revenue, greater liability exposure)
- Changes in tenant use that alter risk profile
Build escalation clauses or periodic review triggers into your NNN lease insurance requirements. A $2 million per occurrence GL requirement may be insufficient for a tenant whose annual revenue has grown from $2 million to $12 million over the lease term.
Frequently Asked Questions
Q: If the NNN lease requires the tenant to carry building insurance, am I still exposed if they don't? A: Yes. Courts have held that if a building is destroyed and the tenant's required insurance doesn't cover it, the landlord cannot simply sue the tenant to rebuild-especially if the tenant lacks the financial resources. You may need to carry your own building property policy as a backstop, even in a tenant-insured NNN.
Q: How do I verify that the tenant's property policy covers the structure, not just their contents? A: Request the property policy declarations page, not just the ACORD 25 certificate. The declarations page will specify what property is covered: "Building" or "Business Personal Property." Confirm it explicitly covers the building.
Q: What happens if the tenant's replacement cost figure is outdated? A: If the insured value is below actual replacement cost, the property is "underinsured." Most property policies contain coinsurance clauses that reduce the payout proportionally when coverage is insufficient. A building worth $3M insured for $2M may yield less than $2M in an insurance payout due to coinsurance penalties.
Q: Should the NNN tenant's umbrella follow form over their building property policy? A: Umbrella policies typically follow form over liability policies-GL, auto, employers' liability. They generally do not extend over property policies. Building property limits must stand alone. Confirm umbrella scope with the tenant's broker.
Bramble reads NNN leases and compares every insurance obligation-property, liability, and endorsement requirements-against the tenant's actual COI and policy declarations. You see exactly where the coverage matches the contract and where it doesn't.