What Is a Triple-Net Lease? A Guide for CRE Investors

Tenants looking to lease commercial real estate and investors considering their next acquisition may come across spaces offered on a triple-net (NNN) basis. NNN leases are one of several types of commercial leases and, while not common across every property type, can offer benefits to landlords and tenants alike under the right conditions.

What Does NNN Mean?

NNN stands for "net of," meaning the tenant covers certain property expenses that would otherwise be built into the rent.

The three nets are property taxes, building insurance, and maintenance or repairs in common areas of the building, which is the core mechanic behind a triple-net lease. Utilities are usually the tenant's responsibility as well, but they sit alongside the three nets rather than counting as one of them.

True triple-net leases are often executed by tenants who occupy an entire building, though they can also be established in multi-tenant buildings. In a multi-tenant setting, landlords who offer triple-net leases typically let tenants pay for in-suite utilities directly, then charge tenants a pro-rata share of shared costs like taxes, insurance, and maintenance.

Five key elements of a NNN lease

1. Base rent: Quoted on an annual per-square-foot basis. For example, a tenant occupying 2,000 square feet at $10 per square foot pays $20,000 annually in base rent.
2. Utilities: Individually metered buildings let tenants pay providers directly, while master-metered buildings require the landlord to apportion costs by usage. In master-metered buildings, that formula should be spelled out in the lease.
3. Real estate taxes: Taxes are based on assessed value, which is set by the local tax assessor's office through periodic reassessment, not a private-market commercial real estate appraisal. The tenant pays a pro-rata share of the building's tax bill, so a tenant occupying 20,000 square feet in a 100,000-square-foot building pays 20% of the total.
4. Property insurance: Insurance is held by the landlord, but each tenant pays a pro-rata share of the premiums based on the percentage of the building they lease. Tenants typically pay their portion to the landlord, who then pays the insurance provider directly.
5. Common area maintenance (CAM) costs: CAM charges cover shared spaces like lobbies, restrooms, elevators, and parking lots, along with janitorial and cleaning services for those areas. However, the landlord typically retains responsibility for the roof, structural elements, and capital expenditures above a negotiated threshold. That threshold should be confirmed in the official lease, since it can materially change a deal's long-term cost and exposure.

What Are the Pros and Cons of a Triple-Net Lease?

NNN leases offer landlords fewer operating responsibilities, and tenants take on more control risk in exchange for lower rent.

Advantages for landlords

1. Steady income: NNN leases typically run long-term, often 10 to 20 years, which gives landlords consistent, reliable income over an extended period.
2. Minimal operating costs: The tenant covers operating expenses like insurance, maintenance, and property taxes, which considerably reduces a landlord's financial obligations.
3. Inflation protection: Rising costs for property taxes, insurance, and maintenance get passed through to the tenant rather than eroding the landlord's return, which insulates NNN income from a category of risk that hits gross-lease landlords directly.

Risks and considerations for landlords

1. Concentration risk: Triple-net leases are more likely than other lease types to have a single tenant or very small number of tenants. In single-tenant NNN leases especially, the landlord's income depends entirely on the success of one tenant, with no other rent roll to offset a default or closure.
2. Maintenance oversight: Tenant neglect can result in significant expenses at lease-end. Landlords may face the need to invest in upgrades or repairs to attract new tenants, adding to rollover costs.
3. Tenant attraction and retention: Finding tenants ready to take on a triple-net lease's obligations can be challenging, potentially leading to prolonged vacancies, which is especially costly given how long these lease terms typically run.
4. Revenue fluctuations: NNN quotes a lower base rent than a comparable gross lease, since the tenant is covering expenses separately, which can cap a landlord's upside if the lease's rent escalations don't keep pace with rising property values or market rents over a long term.

Why tenants accept a triple-net lease

The main draw is lower base rent. Tenants take on increased costs and responsibilities, but in exchange get a rent figure typically well below what a comparable gross lease would cost. They also gain more say over who maintains the space and how it's built out, often with a tenant improvement allowance to help offset the buildout costs.

That combination is usually enough to bring a serious, financially stable tenant to the table, which matters to an investor deciding how easy a given space will be to lease.

What Are the Tax Implications of a Triple-Net Lease?

NNN landlords can typically depreciate the property and defer gains through a 1031 exchange, though QBI eligibility varies.

Depreciation and 1031 exchanges

Landlords can use commercial real estate depreciation for the building, though not the land, over its applicable IRS recovery period, which shelters a portion of NNN income from taxes each year. Many investors also use a 1031 exchange to defer capital gains tax by rolling sale proceeds into a like-kind replacement property, though the strategy runs on a strict clock: 45 days to identify a replacement property and 180 days to close, and missing either deadline disqualifies the exchange entirely.

Section 199A and QBI deduction

The 20% Qualified Business Income deduction under Section 199A applies only to income from a qualifying trade or business, and NNN income doesn't automatically meet that standard. The IRS safe harbor that treats rental real estate as a trade or business specifically excludes property leased on a triple-net basis, so an NNN landlord has to show the activity independently rises to that level. Eligibility turns on factors like the landlord's level of involvement and how the ownership entity is structured. Get entity-specific guidance before treating a QBI deduction as part of your return.

What's the Difference Between a Triple-Net vs. Gross Lease?

A gross lease bundles all expenses into one rent figure, while a NNN lease separates base rent from the operating costs the tenant pays on top of it.

In a full-service gross lease, the tenant pays one fixed amount and the landlord absorbs taxes, insurance, and maintenance. A modified gross lease splits the difference, with some expenses shared. Under NNN, base rent runs lower because the tenant is covering those costs directly.

For example, consider how a 5,000-square-foot space might compare under each structure:

These figures are illustrative, not market benchmarks. Actual rents vary widely by market and asset type.

How Does NNN Compare to Single and Double-Net Leases?

Single and double net leases shift less risk to the tenant, with the landlord retaining more responsibility at each step down.

The chart below outlines some of the key differences in what the tenant pays versus what the landlord pays in each type of net lease:

Tenants take on more control and more risk moving down this list, while landlords hand off more responsibility. A single net lease suits a landlord who wants to stay hands-on; a triple-net lease suits one who doesn't.

What Are the Different Types of Triple-Net Leases?

The main variations come down to how many tenants occupy the property and how much cost actually transfers to them.

NNN leases can be broadly broken down into single-tenant NNN leases, multi-tenant NNN leases, and absolute net leases. NNN leases vary along two dimensions: how many tenants occupy the building, and how much responsibility the tenant takes on. That second dimension is where absolute net leases come in.

Single-tenant net lease (STNL) leases

Single-tenant net leases are typically used with a freestanding property and with one tenant covering all costs, from daily operations to major capital expenses. This setup suits investors looking for a long-term, low-management hold.

Single-tenant net leases are typically NNN or absolute-net leases and are often signed by national, investment-grade tenants like a bank, pharmacy, or quick-service restaurant chain. They often sign a long-term lease with built-in rent escalations tied to a fixed percentage or CPI.

That reliance on a single, well-qualified tenant is exactly what defines STNL as its own category. In this type of NNN lease, tenant creditworthiness takes on an extra level of importance that should factor into how you evaluate deals when considering NNN properties for sale. A STNL deal with a 6% cap rate rented to a national credit tenant typically signifies lower risk than that same 6% cap rate rented to an unrated local tenant, since the stronger tenant is less likely to default or vacate.

Multi-tenant properties

Triple-net leases can be used in a property with multiple tenants, but require some changes to operations compared to single-tenant buildings.

Tenants share common area costs on a pro-rata basis, but individual leases within the same building often differ. For example, one tenant might have a cap on annual CAM increases while another doesn't, or an anchor tenant might negotiate different expense exclusions than a smaller in-line tenant.

For investors, it's important to evaluate each lease individually, even if every tenant in the building is operating under a NNN lease.

NNN vs. absolute net

While similar, a triple-net lease and absolute-net lease have some important differences. A standard NNN lease often still leaves roof, structure, and major capital expenditures with the landlord. An absolute-net lease, sometimes called a bondable lease, shifts every cost, including structural and capital items, to the tenant. That distinction has to come from the lease document itself, not the label on the listing.

Frequently Asked Questions

Who is responsible for a roof replacement in a triple net lease?

It depends on the lease, not the "NNN" label. Despite the triple-net structure covering taxes, insurance, and maintenance, many NNN leases still leave roof and structural repairs, along with major capital expenditures, as the landlord's responsibility. This carve-out is common enough that investors shouldn't assume full cost transfer just because a deal is marketed as triple-net. The only way to know for certain is to read the lease document itself and confirm how roof, structure, and capital items above a given threshold are allocated. Absolute-net leases are the exception, since they typically do shift these costs to the tenant.

Is a triple-net lease a good investment?

For investors seeking steady, passive income with minimal hands-on management, a well-structured NNN lease can be a strong fit, especially with a creditworthy, long-term tenant in place. The trade-off is concentration risk: income depends heavily on one tenant's stability, particularly in single-tenant deals, and a vacancy can mean zero rent until a replacement tenant signs. Whether it's a good investment really comes down to tenant credit quality, lease term, and how clearly the lease defines who covers major repairs. A stronger tenant on a longer lease generally means lower risk, though usually at a lower cap rate.

What happens to a triple-net lease if the property is sold?

The lease typically transfers with the property. A new owner steps into the landlord's role and inherits the existing lease terms, including the tenant's rent, expense obligations, and remaining term length, since the lease is a contract between the tenant and whoever owns the property, not the individual seller. This is one reason lease terms and tenant creditworthiness matter so much to buyers evaluating a NNN acquisition: they're not just buying a building, they're buying the income stream and obligations that come with the existing lease already in place.