NNN Leases Explained: What a First-Time Tenant in Palm Beach County Really Pays

If you are leasing commercial space in Palm Beach County for the first time, the letters NNN will show up on almost every flyer, LOI and lease you see. They look simple. They are not. A triple net lease changes what "rent" means, and first-time tenants who budget off the base rent alone are the ones who get surprised in month two. Here is what NNN actually means, what you will really pay, and the questions to ask before you sign.

What NNN means

NNN stands for triple net. The three "nets" are the three big costs of owning a building: real estate taxes, the landlord's property insurance, and common area maintenance (CAM). In a gross lease, the landlord pays those out of the rent. In a triple net lease, the tenant pays its share of all three on top of base rent.

That is why a listing will often show two numbers, for example a base rent per square foot plus an "OpEx" or "NNN" estimate per square foot. Your real occupancy cost is the sum of both, plus sales tax where it applies, plus your own utilities.

How the math works

Commercial rent in South Florida is quoted per square foot per year, not per month. To get a monthly number, multiply the square footage by the annual rate and divide by twelve. Here is a hypothetical example, using round numbers for illustration only:

• Space: 3,000 square feet

• Base rent: $20.00 per square foot per year, which is $60,000 a year or $5,000 a month

• NNN estimate: $6.00 per square foot per year, which is $18,000 a year or $1,500 a month

• Total monthly occupancy cost before utilities: $6,500

The tenant who only planned for $5,000 a month is already $1,500 short, every month, for the life of the lease. And the base rent usually steps up each year by a fixed escalation written into the lease, so year five costs more than year one. Ask for the full rent schedule, not just the starting rate.

What CAM actually covers

Common area maintenance is the catch-all, and it is where most disputes start. Depending on the lease, it can include parking lot repairs, landscaping, lighting, trash removal, security, the property manager's fee, and the property owners association dues for a business park. Read the definition of "Expenses" or "Operating Expenses" in the lease line by line. Two leases that both say NNN can split costs very differently.

Your share is usually calculated as your "proportionate share": your square footage divided by the rentable square footage of the building or the whole center. If you take 3,000 square feet in a 60,000 square foot center, you pay five percent of the shared expenses.

The estimate is not the final number

The NNN figure on a flyer is the landlord's estimate for the current year. You pay that estimate monthly, and after the year closes the landlord reconciles it against actual costs. If actual expenses ran higher, you get a bill for the difference. If they ran lower, you get a credit. Taxes and insurance in South Florida have both moved a lot in recent years, so a reconciliation bill is not a rare event. Plan a cushion for it.

What you maintain yourself

Many NNN leases also make the tenant responsible for everything inside the premises: interior repairs, plumbing and electrical serving your space, and often the HVAC system. Some leases require you to keep an HVAC service contract with a licensed contractor and send the landlord a copy every year. If the HVAC unit dies in year four and the lease puts replacement on you, that is a five-figure surprise. Know before you sign whether you are responsible for repair only, or for full replacement.

A note on Florida rent sales tax

Florida used to charge sales tax on commercial rent. The legislature repealed the state sales tax on commercial rent effective October 1, 2025, so rent for periods after that date should not carry that line. If you are reviewing an older lease form, or a lease that still references sales tax on rent, ask your broker or attorney how it applies now.

Questions to ask before you sign

• What is the current NNN estimate, and what were the actual expenses for the last two or three years?

• Is there a cap on how much controllable CAM expenses can increase each year?

• What exactly is excluded from operating expenses, such as the landlord's capital improvements, loan payments, or leasing commissions?

• Who repairs and who replaces the HVAC, the roof and the structure?

• When does rent start, and is there any abatement period while you build out?

• Can you audit the landlord's expense records if a reconciliation looks wrong?

Bottom line

NNN is not a bad deal. It is the standard structure for most industrial, flex and retail space in Palm Beach County, and it can be very fair when the expenses are clearly defined and reasonably capped. The tenants who do well are the ones who budget for the full occupancy cost and read the expense definitions before they sign, not after the first reconciliation.

If you are looking at space and want someone on your side reading the numbers, reach out to our team.