The lease structure you choose determines who pays what — and it has a bigger impact on your bottom line than most tenants realize.
When a landlord quotes you a rate on commercial space, the number itself does not tell you much unless you know the lease structure behind it. A $20 per square foot gross lease and a $12 per square foot NNN lease might result in almost the same total occupancy cost — but the risk allocation is completely different. As a Broker Associate at REMAX Collective with 23+ years of real estate experience, I help tenants and landlords across Hillsborough County, Pinellas County, and Pasco County structure leases that align with their goals. Let me break down the differences.
Gross Lease (Full-Service Lease)
In a gross lease, you pay one all-inclusive rent amount. The landlord is responsible for all operating expenses — property taxes, insurance, maintenance, common area costs, and sometimes even utilities. What you see is what you pay.
Advantages for tenants: Simplicity and predictability. You know exactly what your monthly cost is. No surprises from tax increases or insurance premium hikes.
Disadvantages: The rent is higher because the landlord builds in a cushion for expected expenses — and often adds a margin for unexpected ones. You are paying for convenience, and you have no visibility into actual costs.
Common in: Multi-tenant office buildings, co-working spaces, and medical offices. Full-service gross is the standard for Class A office.
Net Lease
Net leases shift some or all operating expenses from the landlord to the tenant. There are several flavors:
Single Net (N)
The tenant pays base rent plus property taxes. The landlord covers insurance and maintenance. This structure is relatively uncommon on its own.
Double Net (NN)
The tenant pays base rent plus property taxes and insurance. The landlord covers maintenance and common area costs. More common than single net, but still less prevalent than NNN.
Triple Net (NNN)
The tenant pays base rent plus property taxes, insurance, and common area maintenance (CAM). The landlord's responsibility is typically limited to structural and roof repairs (though absolute NNN leases shift even those to the tenant).
Advantages for tenants: Lower base rent and full transparency into what you are paying for. If expenses decrease, you benefit directly.
Disadvantages: Expense variability. Property taxes, insurance premiums, and maintenance costs can fluctuate year to year. Without a CAM cap, your costs could rise significantly. Learn more about how NNN investments look from the investor side.
Class A office buildings typically use full-service gross leases. The landlord bundles all operating costs into a single monthly rate.
Modified Gross Lease
The modified gross lease is the middle ground. Landlord and tenant negotiate which expenses each party covers. A typical arrangement might have the landlord pay property taxes and insurance while the tenant pays utilities, janitorial, and their share of CAM. The specifics are entirely negotiable.
Many modified gross leases include an expense stop — a base year amount for expenses. The landlord covers expenses up to that amount, and the tenant pays any increases above it. This protects both parties: the tenant has cost predictability in year one, and the landlord is protected from absorbing all future cost increases.
Side-by-Side Comparison
Expense
Gross
Mod. Gross
NNN
Property Taxes
Landlord
Negotiated
Tenant
Insurance
Landlord
Negotiated
Tenant
CAM
Landlord
Negotiated
Tenant
Utilities
Landlord
Usually Tenant
Tenant
Base Rent
Highest
Middle
Lowest
How This Affects Your Total Cost
Here is what catches people off guard: the total occupancy cost under a gross lease and a NNN lease for the same space is often very similar. The difference is not how much you pay — it is how you pay it, who controls the costs, and how predictable your expenses are. Use our cap rate calculator and ROI calculator to model different lease scenarios.
A landlord quoting $18/SF gross is building in their estimate of operating expenses. A landlord quoting $12/SF NNN plus $6/SF in estimated expenses is giving you the same total — but with transparency into where your money goes. The NNN tenant can audit those expenses. The gross tenant cannot.
Which Structure Should You Choose?
The right lease structure depends on your priorities. This is one of the core questions I work through with clients considering leasing vs. buying commercial space:
Choose gross if you want maximum simplicity and budget certainty.
Choose NNN if you want cost transparency, lower base rent, and are comfortable with some variability in operating expenses. For investors, NNN investments often make the most sense.
Choose modified gross if you want a balance — some predictability with some transparency, and room to negotiate the split.
The Bottom Line
Do not compare lease rates across different structures without understanding what is included. A $14 NNN rate is not cheaper than a $20 gross rate until you add up the total occupancy cost. I always help my clients calculate the all-in cost before making decisions — because the base rent is only part of the story. This is exactly the kind of analysis my tenant representation service provides. Also see our guide on how commercial leases differ from residential for more context.
Freestanding retail buildings typically use NNN leases. The tenant pays base rent plus taxes, insurance, and maintenance. See our NNN lease deep dive and the NNN investment overview.
Choosing the right lease structure is a strategic decision. Tenant representation ensures the structure and terms align with your business plan and budget.
Frequently Asked Questions
What is the difference between a gross lease and a net lease?
In a gross lease, the tenant pays a single flat rent and the landlord covers all operating expenses (taxes, insurance, maintenance). In a net lease, the tenant pays a lower base rent plus some or all of the operating expenses separately. The total cost may be similar, but the structure of who pays what differs significantly.
What is a modified gross lease?
A modified gross lease splits operating expenses between landlord and tenant. The specific split is negotiated — for example, the landlord might cover property taxes and insurance while the tenant pays utilities and janitorial. It is a middle ground between gross and net structures.
Which lease type is better for tenants?
It depends on your priorities. Gross leases offer simplicity and cost predictability. Net leases typically have lower base rent and give tenants more transparency into actual operating costs. For tenants who want to control and monitor their expenses, net leases can be advantageous.
Which lease type is most common for office space?
Full-service gross leases and modified gross leases are most common for office space, especially in multi-tenant office buildings. Net leases are more common in retail and industrial properties.
How does the lease structure affect my total occupancy cost in Florida?
In Florida, NNN leases carry additional exposure because property insurance, storm drainage, and hurricane prep costs are typically passed through as operating expenses. A gross lease may feel safer for budget planning, but the landlord builds those same costs into the rent. Always ask for an all-in cost estimate regardless of lease type before committing to a Florida commercial space.
