What does NNN mean in a commercial lease?
NNN means “triple net.” It generally refers to property taxes, building insurance and maintenance expenses paid in addition to base rent. The written lease determines what the tenant must pay.
Zach Walker · Sable Commercial Realty resources
Published October 4, 2026
Work through the decision
Two NNN proposals may include different expenses. Ask for an itemized estimate, prior year-end adjustments and an explanation of who pays for repairs and replacements. A year-end adjustment compares estimated payments with actual costs. Review the full lease with your advisers before signing.
Questions to bring to the conversation
- Which expenses can increase?
- How are shared costs allocated?
- Who pays for major equipment replacement?
General planning information. Verify costs, conditions and requirements for the specific property and proposed transaction.
Apply this to your plans.
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