How much does NNN add to base rent?
NNN charges commonly add $8 to $12 per square foot, often 40 to 60% of the base rent, so a low quoted rate can nearly double once you add them.
In a triple net (NNN) lease, the pass-through charges commonly add $8 to $12 per square foot on top of base rent, and can run 40 to 60% of the quoted base rate.
That means a space quoted at $24 per square foot NNN is really closer to $32 to $36 all-in once you add your pro-rata share of property taxes, building insurance, and common area maintenance. The exact figure depends on the building and the town, and it changes each year through the CAM reconciliation. Because two buildings can quote the same base rate but carry very different pass-throughs, always ask for the current NNN estimate, a history of operating expenses, an audit right, and a cap on annual increases before comparing spaces.
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