Frequently Asked Questions About Triple Net Leases (NNN)

What is a triple net lease (NNN)?

A triple net lease is a commercial lease structure where the tenant pays the base rent plus three major categories of property operating costs: property taxes, property insurance, and common area maintenance (CAM). “Net” refers to costs that are paid in addition to rent rather than included in rent.

What does the “triple” in triple net mean?

It refers to the three expense buckets typically passed through to the tenant:

• Net property taxes

• Net property insurance

• Net common area maintenance (CAM)

What is CAM in a triple net lease?

CAM (Common Area Maintenance) generally includes shared property expenses such as parking lot upkeep, landscaping, snow/ice removal (where applicable), exterior lighting, trash collection, security, and property management fees. Exactly what counts as CAM depends on how the lease defines it.

Does a triple net lease mean the tenant pays for everything?

Not automatically. Many NNN leases shift significant expenses to the tenant, but “everything” depends on the lease language. Some costs may remain the landlord’s responsibility (for example, certain structural items or capital improvements) unless the lease explicitly passes them through.

What’s the difference between NNN and “absolute” triple net?

An absolute NNN lease is typically more tenant-responsible than a standard NNN lease. In many absolute NNN arrangements, the tenant may be responsible for nearly all expenses, potentially including major repairs and replacements. The exact responsibilities still come down to what the lease says.

Who typically uses triple net leases?

NNN leases are common in commercial real estate, especially for:

• Retail spaces

• Single-tenant buildings

• Freestanding properties

• Certain office or medical spaces
  They’re popular when owners want predictable income and tenants want control over occupancy costs and building operations.

Why do landlords like triple net leases?

Landlords often prefer NNN because it can:

• Reduce landlord exposure to variable operating costs

• Provide more predictable net income

• Shift day-to-day maintenance coordination to tenants (depending on the lease)

• Simplify ownership, especially for investors with multiple properties

Why do tenants agree to a triple net lease?

Tenants may accept NNN because it can:

• Provide more transparency and control over building operations

• Sometimes reduce base rent compared to “gross” leases

• Allow the tenant to maintain the property to their operational standards

• Make occupancy costs align more closely with actual property expenses

How are NNN charges billed?

NNN expenses are often billed as:

• Monthly estimated payments (alongside rent), and/or

• Annual reconciliation based on actual costs
  If the estimates were too high or low, the tenant may get a credit or owe a true-up.

Are NNN costs fixed or do they change?

They can change. Taxes and insurance fluctuate, and maintenance needs vary year to year. CAM charges can rise due to inflation, vendor costs, or deferred maintenance catching up.

What are “base year” and “expense stops” in NNN leases?

Some leases include structures to limit tenant exposure:

• Base year: Tenant pays increases above a baseline year’s operating expenses.

• Expense stop: Landlord covers expenses up to a set amount; tenant pays beyond that.
  These concepts are common in modified gross leases but can appear in NNN variations too.

What’s the difference between gross, modified gross, and triple net leases?

• Gross lease: Landlord typically pays most operating expenses; tenant pays one rent amount.

• Modified gross: Some expenses are included, others are shared or passed through.

• Triple net (NNN): Tenant pays base rent plus taxes, insurance, and CAM (as defined).

What’s the biggest risk for tenants in a triple net lease?

The biggest risk is unexpected expense exposure, especially if:

• The property has deferred maintenance

• Major systems are near the end of life

• CAM is loosely defined or includes management fees and “administrative” charges

• The tenant is responsible for big-ticket repairs under the lease language

What’s the biggest risk for landlords in a triple net lease?

Landlords can still face risk if:

• Lease language leaves gray areas on responsibilities

• Tenants defer maintenance, harming the property long-term

• The landlord must fund capital improvements that aren’t recoverable

• Reconciliation disputes arise over CAM and pass-through calculations

Do triple net leases include capital expenditures?

Sometimes. Many leases distinguish between:

• Operating expenses (typically CAM) and

• Capital expenses (major replacements like roofs, HVAC replacement, parking lot resurfacing)
  Some leases allow capital costs to be passed through via amortization, others do not. The exact rules are in the lease.

Are roofs and HVAC included in NNN responsibilities?

It depends on the lease and property type:

• In some single-tenant NNN deals, the tenant may handle roof and HVAC.

• In multi-tenant properties, responsibility might be split or handled by the landlord then passed through in part.
  Never assume—this is one of the most important sections of the lease.

Why should tenants and buyers consider an inspection before signing an NNN lease?

Because the lease can shift repair responsibility to the tenant, a thorough evaluation helps identify:

• Deferred maintenance

• System age and condition

• Likely near-term repair costs

• Safety and operational issues
  This helps prevent signing into unexpected liabilities.

What is a triple net lease inspection?

A triple net lease inspection is an inspection performed with lease responsibilities in mind. It focuses on building systems and conditions that could become the tenant’s responsibility during the lease term, helping clarify risk and supporting negotiations or baseline documentation.

What should I look for in a triple net lease before signing?

Key areas to review carefully include:

• Definitions of CAM and pass-through expenses

• Repair vs replacement responsibilities

• Capital expense language and amortization

• Roof, HVAC, plumbing, and structural responsibility

• Maintenance standards and inspection rights

• Reconciliation methods and audit rights

• Default clauses and remedies

Is a triple net lease “good” or “bad”?

Neither by default. A triple net lease is a structure. Whether it’s favorable depends on:

• The property’s condition and maintenance history

• How clearly responsibilities are written

• How CAM and pass-throughs are defined

• The tenant’s ability to manage repairs and maintenance