How to Read a NNN Lease: A Landlord's Clause-by-Clause Guide

How to Read a NNN Lease: Clause-by-Clause Landlord Guide | PigJet visual summary

After you've signed a dozen NNN leases, you start to recognize the landmines. They're usually not in the obvious places — not in the rent schedule, not in the term. They're buried in the CAM definitions, tucked into the exclusion list, or sitting quietly in a gross-up provision that nobody read at signing.

This guide walks through the clauses NNN landlords most commonly misread or skip. I'm not your attorney — get one involved for anything you're actually signing — but knowing what to look for before the redlines start flying will save you time and protect you at year-end reconciliation.

---

The CAM Definition: Where Most Disputes Start

The single most consequential section in an NNN lease is the definition of "Operating Expenses" or "Common Area Maintenance Charges" — whatever your lease calls it. This is the list of costs you're allowed to pass through to tenants.

What landlords miss: The base definition is often broad, but it's the exceptions and exclusions that determine what you can actually bill.

Look for the exclusions list. It typically reads something like: "Operating Expenses shall not include capital expenditures, costs of correcting latent defects, depreciation, mortgage interest, income taxes..."

The problem is that exclusion lists vary wildly. One lease might exclude only items over $50,000 and amortize everything below that. Another might exclude all capital expenditures with no amortization path. These differences determine whether a new HVAC system comes out of your pocket or gets spread across tenants over 15 years.

What to confirm before signing:

For more on how this plays out at year-end, see our guide on preventing CAM reconciliation disputes.

---

Gross-Up Provisions: The Math Behind Partial Occupancy

If your property isn't 100% occupied, gross-up provisions affect how much each tenant pays in CAM.

Here's the basic concept: some operating expenses are "variable" — they scale with occupancy. Cleaning costs, utilities for common areas, certain maintenance items. When a building is only 60% occupied, those costs are lower than they'd be at full occupancy. The gross-up clause lets the landlord adjust (or "gross up") those variable costs to what they would be at, say, 95% occupancy, so the occupied tenants aren't benefiting from a discount just because the building isn't full.

What landlords miss: Whether gross-up is allowed at all, what occupancy threshold triggers it (typically 90-95%), and whether gross-up applies to all CAM expenses or only variable expenses.

If you gross up incorrectly — applying it to fixed costs, using the wrong threshold, or doing it without a lease provision that allows it — you're exposed to dispute. Tenants with sophisticated lease counsel will find it.

What to look for:

---

Rent Bumps: Fixed Steps vs. CPI vs. Percentage

The rent escalation clause determines how base rent grows over the lease term. There are three common structures:

Fixed step increases: Rent goes up by a defined amount — say, 10% every 5 years, or 2% annually. Simple, predictable, easy to track.

CPI-based bumps: Rent increases tied to the Consumer Price Index. The lease should specify which CPI index (All Urban Consumers? A regional index?), the measurement period, whether there's a floor (minimum increase) or cap (maximum increase), and whether it's cumulative.

Percentage rent: An additional rent component — typically a percentage of tenant sales above a certain threshold ("natural breakpoint"). Common in retail. Usually the floor base rent plus a percentage of excess sales.

What landlords miss: CPI leases often have complicated measurement mechanics. If your tenant's lease says "CPI, capped at 3%" and inflation runs 6% for two years, you may have significantly underpriced the rent relative to market. On the other side, a very high CPI cap in a low-inflation environment can lead to tenant pushback at renewal.

Know what structure you have in every lease and whether you're tracking it correctly.

---

CAM Exclusions and Caps: Limiting Your Billing Power

Beyond the base exclusion list, many tenants negotiate:

CAM caps: A ceiling on how much CAM can increase year over year, often expressed as a percentage of the prior year's actual. A 5% annual CAM cap is common in tenant-favorable leases. If your actual expenses go up 12%, you eat the difference.

Controllable vs. uncontrollable expense splits: Some leases cap only "controllable" expenses (management, maintenance, landscaping) while leaving "uncontrollable" expenses (insurance, taxes, utilities) uncapped. This is more landlord-friendly.

Specific exclusions: Tenants often negotiate exclusions for particular cost categories — capital improvements of any size, costs covered by insurance, environmental remediation, costs not directly related to operating the property.

What landlords miss: The cap applies to whatever year's actual costs the lease uses as the base year. If your base year was unusually low (pandemic year, for example), you hit the cap sooner than you'd expect. Check what base year the cap calculation starts from.

---

Co-Tenancy and Kick-Out Clauses: The Silent Lease Killers

These are the clauses that give tenants leverage to reduce rent or exit the lease when conditions at the center change.

Co-tenancy clauses: A tenant's rent obligation (or their right to remain) is conditioned on another tenant being present. Classic form: "If [anchor tenant] ceases to operate, Tenant's rent shall be reduced to [percentage rent only / lower fixed rate] until [anchor tenant] is replaced."

Common triggers:

Co-tenancy remedies: The remedy for co-tenancy failure can range from rent reduction to lease termination ("kick-out"). A kick-out clause gives the tenant the right to terminate the lease if the co-tenancy failure continues for a defined period (often 12-24 months without replacement).

What landlords miss: Multi-property landlords sometimes inherit co-tenancy clauses from prior owners without fully tracking them. If you're acquiring a NNN asset, get a lease abstract that specifically flags every co-tenancy provision before closing.

---

Assignment and Subletting: Who Controls the Tenant?

NNN leases typically restrict assignment and subletting without landlord consent, but the consent standard matters:

Also look for transfer fee provisions (tenants typically pay 1-2% of transaction value or a flat fee), and whether the original guarantors are released upon assignment (they usually try to negotiate release).

For related considerations, see our post on NNN lease assignment and subletting rights.

---

The Estoppel and SNDA Clauses

Two clauses that are easy to skim past but matter at closing or refinancing:

Estoppel certificate: A tenant's written representation of the lease status — no defaults, rent is current, no amendments not reflected in the lease. Required by any lender or buyer. Your lease should include a provision requiring tenants to deliver estoppels within 10-20 days of request. More importantly, check whether your lease includes a deemed-approval provision — if the tenant doesn't respond within the deadline, the estoppel facts are deemed confirmed.

SNDA (Subordination, Non-Disturbance, Attornment): Governs the tenant's relationship to your lender. You'll typically want lender NDAs (non-disturbance agreements) negotiated before the tenant signs — but if not, the SNDA clause in the lease determines what happens if you refinance or the lender forecloses.

---

Before You Sign

The best time to negotiate these provisions is before execution. After signing, you're living with whatever the lease says — and in a 10-year NNN deal, even a modest CAM cap or a co-tenancy kick-out can mean six figures of exposure.

The clauses above are the ones I flag every time. Have your attorney scrub them against this list on every new lease, and run a lease abstract process whenever you acquire an existing property with tenants in place.