If you’re looking at commercial real estate, you’ve probably seen terms such as single net, double net, and triple net lease.
They all describe lease structures where the tenant pays some property expenses in addition to base rent. The main difference is how many of those expenses are passed from the landlord to the tenant.
The four common categories are single net, double net, triple net, and absolute net leases. Understanding the differences can help you compare commercial properties and estimate the financial responsibility that comes with each lease.
What Is a Net Lease?
A net lease is a commercial lease where the tenant pays base rent plus one or more expenses associated with operating or owning the property.
In a traditional gross lease, the landlord generally pays most property expenses from the rent collected from the tenant.
A net lease shifts some of those expenses to the tenant.
The more “nets” included in the lease, the more property-related expenses the tenant generally takes on.
The three most commonly discussed types are:
- Single net lease, or N lease
- Double net lease, or NN lease
- Triple net lease, or NNN lease
An absolute net lease can shift even more responsibility to the tenant.
However, these labels are general descriptions. The actual lease agreement determines which expenses the tenant and landlord are responsible for.
What Are the Types of Net Leases?
The main types of net leases are:
- Single net lease
- Double net lease
- Triple net lease
- Absolute net lease
Each structure shifts a different level of property expenses to the tenant.
Let’s look at each one.
1. Single Net Lease
A single net lease, sometimes called an N lease, is a commercial lease where the tenant generally pays base rent plus property taxes.
The landlord typically remains responsible for property insurance, maintenance, and other operating expenses.
For example, suppose a tenant pays:
- Base rent: $5,000 per month
- Property taxes: $600 per month
The tenant’s estimated monthly cost would be $5,600.
The landlord would generally handle insurance and maintenance under a typical single net arrangement.
Single net leases are less common than double and triple net leases in many commercial settings, but the structure can still appear in certain arrangements.
What Does the Tenant Pay?
A typical single net lease may require the tenant to pay:
- Base rent
- Property taxes
The landlord generally pays:
- Property insurance
- Building maintenance
- Other operating expenses
The exact division depends on the contract.
2. Double Net Lease
A double net lease, also known as an NN lease, shifts two major property expenses to the tenant.
These are generally:
- Property taxes
- Property insurance
The tenant also pays the base rent.
The landlord typically remains responsible for building maintenance and repairs, although the lease may assign certain maintenance responsibilities to the tenant.
For example, a tenant might pay $6,000 in base rent, $800 in property taxes, and $250 in insurance each month.
The estimated monthly cost would be:
$6,000 + $800 + $250 = $7,050
The tenant therefore has more expense responsibility than under a single net lease.
But the tenant generally has less responsibility than under a triple net lease.
3. Triple Net Lease
A triple net lease, commonly called an NNN lease, generally requires the tenant to pay three major categories of property expenses:
- Property taxes
- Property insurance
- Maintenance and operating expenses
The tenant also pays the agreed base rent.
For example, suppose a commercial property has:
- Base rent: $7,000 per month
- Property taxes: $900
- Insurance: $300
- Maintenance and operating expenses: $700
The estimated total monthly occupancy cost would be:
$7,000 + $900 + $300 + $700 = $8,900
The base rent is $7,000, but the tenant’s estimated total cost is $8,900.
This is why you should never compare NNN properties based only on their advertised rent.
What Does the Tenant Pay?
A typical NNN lease may make the tenant responsible for:
- Property taxes
- Property insurance
- Maintenance
- Common-area expenses
- Landscaping
- Certain repairs
- Other operating expenses specified in the lease
The exact responsibilities can vary.
For example, one NNN lease may make the tenant responsible for routine maintenance while the landlord retains responsibility for major structural repairs.
Another lease may allocate those costs differently.
Always read the actual provisions.
4. Absolute Net Lease
An absolute net lease is generally an even more tenant-heavy structure.
The tenant may assume responsibility for essentially all property-related costs and obligations, potentially including major repairs, replacements, and structural components.
This can make an absolute net lease significantly different from a typical NNN lease.
For example, a tenant under an absolute net lease might be responsible not only for taxes, insurance, and routine maintenance but also for substantial property expenses that would otherwise remain with the landlord.
The exact obligations depend on the lease.
This type of arrangement is often associated with long-term commercial leases where the tenant takes on extensive responsibility for the property.
Because the financial exposure can be substantial, tenants should carefully review the repair, replacement, casualty, and structural provisions before signing.
Net Lease Types Compared
The easiest way to understand the different types is to compare the expenses generally assigned to the tenant.
| Lease Type | Property Taxes | Insurance | Maintenance & Operating Expenses |
|---|---|---|---|
| Single net (N) | Tenant | Usually landlord | Usually landlord |
| Double net (NN) | Tenant | Tenant | Usually landlord |
| Triple net (NNN) | Tenant | Tenant | Usually tenant |
| Absolute net | Tenant | Tenant | Generally tenant, including broader obligations |
These are general structures rather than universal rules.
A commercial lease can be negotiated in many different ways. The contract determines the actual responsibilities.
Single vs. Double vs. Triple Net Lease
The difference becomes clearer when you look at how expenses move from the landlord to the tenant.
With a single net lease, the tenant generally takes on property taxes.
With a double net lease, the tenant generally takes on property taxes and insurance.
With a triple net lease, the tenant generally takes on property taxes, insurance, and maintenance or operating expenses.
In simplified form:
Single net: Rent + taxes
Double net: Rent + taxes + insurance
Triple net: Rent + taxes + insurance + maintenance/operating expenses
The more expenses transferred to the tenant, the more important it becomes to estimate the property’s future operating costs.
Net Lease vs. Gross Lease
A net lease is easier to understand when you compare it with a gross lease.
Under a gross lease, the tenant generally pays an agreed rental amount while the landlord handles most property expenses.
Under a net lease, some of those expenses are passed on to the tenant.
Here’s a simplified comparison:
| Feature | Gross Lease | Single Net | Double Net | Triple Net |
|---|---|---|---|---|
| Base rent | Tenant | Tenant | Tenant | Tenant |
| Property taxes | Usually landlord | Tenant | Tenant | Tenant |
| Insurance | Usually landlord | Usually landlord | Tenant | Tenant |
| Maintenance | Usually landlord | Usually landlord | Usually landlord | Often tenant |
| Tenant expense exposure | Lower | Moderate | Higher | Generally highest |
Actual lease terms can differ.
For example, a modified gross lease can split expenses between the landlord and tenant in a way that doesn’t fit neatly into these categories.
How Much Does a Net Lease Cost?
There isn’t one standard cost for a net lease.
Your total occupancy cost depends on the base rent and the expenses assigned to you.
For example, imagine two properties.
Property A has a $6,000 monthly gross rent.
Property B has a $5,000 monthly base rent under an NNN lease, plus $1,500 in estimated taxes, insurance, and operating expenses.
The first property costs $6,000 based on the stated rent.
The second costs an estimated:
$5,000 + $1,500 = $6,500
The NNN property has the lower advertised rent but the higher estimated total cost.
This is why you should compare the complete expense structure rather than the base rent alone.
Why Do Landlords Use Net Leases?
Net leases can shift some property-related expenses to tenants.
This can reduce the landlord’s direct exposure to expenses such as property taxes, insurance, and maintenance.
It may also make the landlord’s income easier to evaluate because certain operating costs are passed through to the tenant.
For investors, long-term net leases can sometimes be attractive because they may reduce day-to-day property management responsibilities.
However, the benefits depend on the property, tenant, lease terms, and expenses.
Why Do Tenants Agree to Net Leases?
A tenant may accept a net lease because the overall lease economics can make sense even with additional expenses.
For example, the base rent may be lower than under a comparable gross lease.
A tenant may also appreciate having clearer responsibility for certain property expenses.
But there is a trade-off.
The tenant takes on more financial exposure. Property taxes can increase. Insurance premiums can change. Maintenance costs can rise.
A tenant needs to determine whether the potential benefits justify that additional responsibility.
What Are the Risks of Net Leases?
The biggest issue for tenants is that the total cost can change over time.
Property Taxes Can Rise
If the tenant is responsible for property taxes, an increase in the tax bill can increase the tenant’s occupancy cost.
This matters particularly for long-term leases.
Insurance Costs Can Increase
Insurance premiums aren’t necessarily fixed.
A tenant should understand whether the lease passes through all applicable insurance costs and how those costs are calculated.
Maintenance Can Be Expensive
This becomes particularly important under triple net and absolute net leases.
Routine maintenance may be manageable, but major repairs and replacements can be expensive.
The lease should clearly state who is responsible for costs involving the roof, HVAC system, structure, plumbing, electrical systems, and other major components.
Unexpected Expenses
A property can have expenses that aren’t obvious when you first review the asking rent.
Ask for historical operating expenses whenever possible.
This can give you a better starting point for estimating your potential costs.
What Should You Check Before Signing a Net Lease?
Don’t evaluate a net lease based only on the number of nets.
Review the actual expenses and responsibilities.
Pay particular attention to:
- Base rent
- Property taxes
- Insurance
- Maintenance
- Repairs
- Capital expenditures
- Replacement costs
- Utilities
- Common-area expenses
- Expense increases
- Expense reconciliation
- Audit rights
- Renewal terms
- Assignment and subleasing provisions
- Early termination provisions
If the property is part of a larger building, ask how shared expenses are allocated among tenants.
If you’re considering an absolute net or long-term NNN lease, pay particular attention to major repair and replacement obligations.
Questions to Ask Before Signing
Before committing to a net lease, ask:
What were the property’s actual expenses last year?
Which expenses am I responsible for?
How are property taxes calculated and allocated?
How is insurance charged to the tenant?
Who pays for routine maintenance?
Who pays for major repairs?
Who pays for replacements?
Can operating expenses increase without a cap?
How are shared expenses calculated?
Can I review historical expense statements?
These questions can help you understand the real cost of the lease.
Which Type of Net Lease Is Best?
There isn’t a universally best type of net lease.
The right structure depends on the tenant, property, lease terms, and financial situation.
A single net lease generally puts the least additional expense responsibility on the tenant among the common net lease types.
A double net lease adds insurance responsibility.
A triple net lease adds maintenance and operating expenses.
An absolute net lease can transfer even broader property obligations to the tenant.
For a tenant, the important question is not simply how many “nets” a lease has.
It’s what those responsibilities actually cost.
A lower base rent may not be attractive if the additional expenses are high or unpredictable.
For a landlord, the calculation is different. Passing expenses to the tenant can reduce operating exposure, but the lease structure can also affect the property’s attractiveness to potential tenants.
The Bottom Line
The main types of net leases are single net, double net, triple net, and absolute net leases.
A single net lease generally passes property taxes to the tenant. A double net lease generally adds insurance. A triple net lease generally adds maintenance and operating expenses. An absolute net lease can transfer even broader property obligations.
The labels provide a useful starting point, but they don’t tell you everything.
Before signing a net lease, look beyond the base rent. Calculate the expected total occupancy cost and carefully review who is responsible for taxes, insurance, maintenance, repairs, and major replacements.
For a significant commercial lease, having a qualified commercial real estate attorney review the agreement can help you understand the financial obligations before you commit.