NNN stands for net, net, net, referring to three expense categories, property taxes, building insurance, and common area or structural maintenance, that shift from landlord to tenant under this lease structure. In a gross lease, the landlord bundles those costs into rent and absorbs the variance if they rise. In a true triple net lease, the tenant pays them directly or reimburses the landlord dollar for dollar, and the landlord's rent check stays largely insulated from those swings.
The term gets used loosely across the industry, and a Miami-Dade landlord reviewing an offer should read the actual lease language rather than assume the label guarantees a specific split of responsibilities.
The Three Nets, Broken Down
- property taxes: tenant reimburses or pays directly, insulating the landlord from millage rate increases
- insurance: tenant carries or reimburses the building's property insurance, though the landlord typically still holds the policy in markets with high premiums
- maintenance: tenant covers routine repairs and often structural items, depending on how the lease defines the landlord's remaining obligations
Where Triple Net Differs From Modified Gross and Absolute Net
A modified gross lease splits some, not all, of these expenses, commonly leaving roof and structure with the landlord while the tenant covers taxes and insurance. An absolute net lease, sometimes called bondable, pushes essentially everything, including roof and structure replacement, onto the tenant, which is common in build-to-suit deals with national credit tenants. Between those two extremes sits the more typical triple net lease, where taxes, insurance, and interior/exterior maintenance fall to the tenant but roof and structure sometimes remain a landlord responsibility, particularly on older buildings.
Why Insurance Costs Complicate the South Florida Version
A triple net lease written five years ago, before Miami-Dade property insurance premiums climbed sharply, may cap the tenant's insurance reimbursement obligation at a dollar figure that no longer covers the actual premium. When that happens, the landlord absorbs the gap even on a lease labeled triple net, which is exactly the kind of clause a buyer needs to catch before closing rather than after the first renewal cycle.
Reading the Lease Instead of the Label
The offering memorandum on a listing will almost always say NNN. The lease abstract will tell you what that actually means for this specific tenant: whether roof and structure fall to the landlord, whether there's a cap on tax or insurance reimbursement, and how capital expenditures near the end of the term get allocated. Buyers who skip the abstract and underwrite off the summary sheet are the ones who discover the gap after closing.
Common Reimbursement Disputes Worth Understanding Early
Even in a well-drafted triple net lease, disputes tend to cluster around a handful of recurring issues: how common area maintenance charges get calculated on a multi-tenant property, whether a capital repair counts as maintenance the tenant owes or a structural item the landlord owes, and how tax reassessments following a sale get passed through in the year of transfer. A landlord who understands these friction points before signing, rather than after a dispute arises, is in a much stronger position to negotiate clear language up front.
On a single-tenant deal these disputes are less common since there's no CAM allocation across multiple tenants to argue about, but the structural-versus-maintenance question still comes up regularly on older buildings nearing a roof's expected service life. A well-drafted lease defines roof and structure precisely enough that a partial repair, rather than a full replacement, doesn't become a gray area the two parties argue about after a storm.
Why the Structure Appeals to 1031 Exchangers
Investors coming out of management-heavy real estate, an apartment building or an aging strip center, often look at true net lease product specifically because it reduces landlord duties to lease administration rather than active property management. For a 1031 exchange replacement, that lower operational burden can be the whole appeal, though it still needs to be weighed against the tenant's credit and the lease's actual net structure, not assumed from the acronym alone.
Common 1031 Exchange Questions
What is the difference between a net lease and a triple net lease?
A net lease is a general category where the tenant covers at least one operating expense beyond base rent. Triple net specifically means the tenant covers all three: property taxes, insurance, and maintenance, though the exact allocation still depends on the lease language.
Does the landlord have any responsibilities under a triple net lease?
Often yes, particularly for roof and structural elements, unless the lease is written as absolute or bondable net. The remaining landlord obligations should be confirmed in the lease abstract rather than assumed.
Why do some triple net leases still leave the landlord exposed to rising costs?
Older leases sometimes cap the tenant's reimbursement obligation at a fixed dollar amount. If insurance or tax costs rise above that cap, as has happened broadly in South Florida, the landlord covers the difference despite the triple net label.
Are triple net leases only used for retail properties?
No. The structure appears across retail, industrial, medical office, and single-tenant office buildings, though it is most common in single-tenant retail and industrial deals.
Is a triple net lease automatically a passive investment?
It reduces day-to-day management compared to a multi-tenant or residential property, but it still requires monitoring tenant financial health, lease renewal timing, and insurance requirements. It is lower-maintenance, not maintenance-free.
