Lease Structures

Triple Net Lease (NNN) Explained

Quick Definition

Triple Net Lease (NNN): A Triple Net Lease (NNN) is a commercial real estate lease structure where the tenant is contractually responsible for all three primary property operating expenses: real estate taxes, building insurance, and structural maintenance, in addition to base rent.

Institutional Analysis & Context

In an NNN lease, the REIT acts essentially as a financial landlord collecting pure coupon-like rent with virtually zero exposure to inflationary spikes in utility bills, municipal property tax increases, or roofing maintenance costs. Net lease agreements typically feature initial non-cancellable terms of 10 to 25 years with contractual annual rent increases of 1% to 3% or tied to CPI.

Formula & Calculation Breakdown

Landlord Net Cash Flow = Base Contractual Rent (Tenant Pays: Property Taxes + Insurance + Maintenance)

Metric Component	Definition & Application
Net 1: Property Taxes	Contractually paid by tenant directly to the local municipality
Net 2: Building Insurance	Contractually paid by tenant covering all property hazard and liability policies
Net 3: Common Area & Maintenance	Contractually handled by tenant covering repairs, HVAC, parking lot, and roof

Real-World Calculation Example

Realty Income (O) leases a freestanding pharmacy to Walgreens for $250,000 per year on a 15-year NNN contract. When municipal property taxes jump by 12% and building insurance rises by 8%, Walgreens pays 100% of those increases while Realty Income collects the full $250,000 uninterrupted.

Flagship REITs Exemplifying This Metric

Analyze how top public REITs perform across this dimension in the live market:

O Profile →NNN Profile →ADC Profile →WPC Profile →EPRT Profile →

Frequently Asked Questions

Why do investors love NNN REITs for dividend income?

Because the landlord is insulated from inflationary operating expense surges. Rental cash flow is highly predictable, mimicking long-term investment-grade corporate bonds with physical real estate collateral.

What are the primary risks of triple net lease REITs?

Tenant credit risk and re-leasing risk. If a single-tenant freestanding occupant goes bankrupt (e.g. Red Lobster or Rite Aid), the building sits 100% vacant with zero revenue until a replacement tenant is secured.

What is the difference between Gross Lease and Triple Net Lease?

Under a Gross Lease (common in office towers), the landlord pays all taxes, insurance, and utilities out of the collected rent. Under an NNN Lease, the tenant pays all three directly.