Sign a commercial lease without understanding liability insurance and you could be personally on the hook for a customer’s injury, fire damage to the building, or months of lost income. The landlord’s policy covers the structure — not your equipment, not your customers, and not your business if you have to shut down. Research from commercial leasing experts shows that tenants who assume the landlord’s insurance has them covered are the ones who end up paying twice.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
The type of lease you sign — triple net, full-service gross, or modified gross — directly determines whether you pay for the building’s insurance through your rent or as a separate charge. Each arrangement leaves you exposed to different gaps. Here’s what you actually need to know.
What This Article Covers
One term shows up in almost every commercial lease clause on this topic: additional insured. It means the landlord is protected under your policy for claims arising from your use of the space.
What I tend to notice is that tenants fixate on the rent amount and skip the insurance schedule. That’s where the real surprises live — and where a broker who understands commercial leases becomes worth every dollar.
Who Pays for What: Full Cost Breakdown by Lease Type
Rent is never the only number. The lease structure decides how much of the building’s insurance premium lands on your desk. In a triple net (NNN) lease, you pay a proportional share of the landlord’s building insurance through common area maintenance (CAM) charges. In a full-service gross (FSG) lease, the landlord bundles that cost into the rent — but you still need your own liability and contents policies. A modified gross (MG) lease splits the difference, with the split written into the lease document.
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| Lease Type | Who Pays Building Insurance | Tenant Still Needs |
|---|---|---|
| Full-Service Gross (FSG) | Landlord (bundled into rent) | GL, contents, workers’ comp, BI |
| Triple Net (NNN) | Tenant (via CAM charges) | GL, contents, workers’ comp, BI |
| Modified Gross (MG) | Negotiated split | GL, contents, workers’ comp, BI |
| Single Net (N) | Landlord (tenant pays taxes) | GL, contents, workers’ comp, BI |
The baseline tenant policies are the same regardless of lease type. General liability covers third-party bodily injury and property damage — typically $1 million per occurrence and $2 million aggregate, according to research from Vouch’s commercial lease insurance breakdown. Commercial property covers your own equipment, furniture, and inventory. Workers’ compensation is mandatory the moment you hire anyone. Business interruption covers lost income if the premises become unusable after a fire or flood.
I’d look at this from the other direction: the cheaper the headline rent, the more likely you’re in an NNN lease where every insurance cost hits you directly. Worth weighing the total cost — rent plus CAM plus your own policies — before comparing spaces.
Mistakes Tenants Make With Lease Liability Insurance
Assuming the Landlord’s Policy Covers Your Belongings
This is the one that causes the most financial damage. A landlord’s building insurance covers the structure — walls, roof, floors, common areas. It does not cover your laptop, your inventory, your custom shelving, or your customer’s broken arm. One slip-and-fall claim in your space lands on your general liability policy, not the landlord’s. Research from Hiscox’s commercial lease liability guide confirms that even when a lease doesn’t mandate tenant insurance, going without it leaves the business exposed to expensive claims. The fix: get a Business Owner’s Policy (BOP) that bundles general liability, commercial property, and business interruption into one package. It’s usually cheaper than buying each separately.
Not Getting the COI Before Move-In
Landlords require a Certificate of Insurance (COI) before they hand over the keys. The COI proves you have the required coverage limits, the additional insured endorsement, and the waiver of subrogation clause. Deliver it late and the landlord can delay your access, charge penalties, or in some cases void the lease. The process: request the COI from your insurer at least two weeks before the lease start date. Check that it lists the landlord as an additional insured and matches every limit in the lease. One mismatch — a wrong date, a missing endorsement — and the landlord’s lawyer sends it back.
Confusing Certificate Holder With Additional Insured
These are not the same thing. A certificate holder is simply someone who receives a copy of your COI as a courtesy. An additional insured is someone who is protected under your policy for claims arising from your operations. Most commercial leases require the landlord to be named as an additional insured, not just a certificate holder. The difference matters when a claim happens. If the landlord is only a certificate holder, they have no coverage under your policy. If they are an additional insured, your policy covers them for claims related to your tenancy. Have your broker add the endorsement before the lease is signed.
Skipping the Waiver of Subrogation Clause
A waiver of subrogation prevents your insurer from suing the landlord after paying a claim. Landlords require it so they don’t get dragged into a lawsuit by your insurance company. Without it, your insurer could pay a claim and then turn around and sue the landlord for the same incident — which the landlord’s lease is designed to prevent. The waiver must be endorsed on your policy before the lease starts. It’s a standard clause, but your broker needs to confirm it’s included.
What I’d flag as the most expensive of these: assuming the landlord’s policy covers your stuff. I’ve seen tenants lose thousands of dollars in equipment after a fire because they never bought their own contents coverage.
How to Get Properly Insured: A Step-by-Step Process
Map Your Lease Obligations First
Before you call an insurer, pull out the lease’s insurance clause. It will specify the minimum general liability limit, whether the landlord needs to be named as an additional insured, whether a waiver of subrogation is required, and what other policies (workers’ comp, professional indemnity, cyber) are mandated. Take that clause to a licensed commercial insurance broker, not a general agent. The research from Sprintlaw’s Australian commercial lease insurance guide emphasises that the broker should see the exact lease wording so the policy matches it. A mismatch between the policy and the lease is the most common reason COIs get rejected.
Choose the Right Policy Structure
For most small to medium commercial tenants, a Business Owner’s Policy (BOP) is the most cost-effective route. It bundles general liability, commercial property, and business interruption. If you need higher liability limits — say, $2 million per occurrence instead of $1 million — or additional endorsements like tenant improvements or plate glass, the BOP can be customised. If your business carries specific risks, such as product liability or professional indemnity, those may need separate policies. Your broker can walk through which combination matches the lease requirements and your actual risk profile.
Get the COI and Endorsements in Place Early
Request the COI at least two weeks before the lease start date. Confirm it includes the correct named insured (your business name exactly as on the lease), the landlord as additional insured, the waiver of subrogation, and the required coverage limits. Send it to the landlord or their agent and ask for written confirmation that it’s accepted. If the landlord rejects it, you have time to fix the issue before move-in. Once accepted, set a renewal reminder — COIs expire when your policy expires, and the landlord will request a new one each year.
Plan for Renewals and Changes
Insurance policies renew annually, and your lease likely runs for years. Set a calendar reminder 60 days before each renewal to review the lease requirements again — limits can change, and the landlord’s requirements may evolve. If you renovate the space, add expensive equipment, or hire more staff, your coverage limits may need to increase. A quick check with your broker each year keeps you from falling out of compliance.
What’s Changing: Emerging Compliance Trends
Commercial landlords are increasingly requiring higher liability limits, especially in high-traffic retail and hospitality spaces. The $1 million per occurrence standard is shifting toward $2 million in many markets. Cyber insurance is also appearing more frequently in lease insurance clauses, particularly for tenants handling customer payment data or personal information. If your lease doesn’t currently require cyber coverage, expect it to come up at renewal. Getting ahead of these requirements — rather than scrambling when the landlord demands a new COI — saves time and stress.
Frequently Asked Questions
What happens if I don’t get insurance before moving in? ▾
Can I use the same insurance for multiple commercial leases? ▾
Does the landlord’s insurance ever cover my equipment? ▾
What is the difference between an additional insured and a certificate holder? ▾
Do I need workers’ compensation insurance if I’m a sole trader? ▾
What is a waiver of subrogation and why do landlords want it? ▾
Your Insurance Strategy Is a Business Continuity Decision
The way you handle lease liability insurance tells you something about how you think about risk. The cheapest option — assuming the landlord’s policy covers you, or buying the minimum and hoping nothing happens — works until it doesn’t. A single claim can wipe out a business that didn’t carry the right coverage. The research is clear: the landlord’s policy covers the building, your policy covers your business, and the lease type determines exactly how much of the building insurance you pay for. Getting a broker who reads leases, getting the COI done early, and setting renewal reminders turns insurance from a compliance chore into a structural protection for your business.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Commercial Renting Checklists: Key Considerations Before Signing on the Dotted Line.
Sources and Further Reading
Renting vs Buying Commercial Property in Australia: The Ultimate Showdown — Weighs the long-term cost and risk trade-offs of leasing versus owning commercial space.
Tips for Navigating Property Subleasing Regulations in Australia — Covers the additional insurance and liability complications that arise when subleasing commercial space.
CommercialCafe (2024). Commercial Lease Insurance: What Tenants Need to Know. 🔗
Vouch (2024). Commercial Lease Insurance: What It Is and Why You Need It. 🔗
Hiscox (2024). Does a Commercial Lease Require Liability Insurance? 🔗
Sprintlaw (2024). Insurance for Commercial Lease Tenants: Australian Business Guide. 🔗
