An nnn lease gets used as a catch-all term for any deal where the tenant pays some of the building's operating costs, but the letters mean something specific, and the specifics change who's on the hook when the roof leaks or the tax bill goes up.
Single, Double, and Triple: What Each One Covers
A single net lease has the tenant paying property taxes on top of base rent, with insurance and maintenance staying on the landlord. A double net lease adds insurance to the tenant's side, leaving maintenance, and usually roof and structure, with the landlord. A triple net lease shifts all three, taxes, insurance, and maintenance, to the tenant, which is why a true triple net deal is sometimes called an absolute net lease. The gap between double and triple net is the one that trips people up most, since roof and structural repair on a large commercial building can run into real money, and that responsibility doesn't move just because a lease is marketed with three Ns in the name.
Gross Leases Sit at the Other End
A gross lease is the mirror image, with the landlord covering taxes, insurance, and maintenance out of the rent collected, and the tenant paying one number with no separate pass-throughs. Most office and some retail space in Santa Barbara's downtown core leases on something closer to a modified gross structure, where a few specific costs pass through but most stay with the landlord, rather than a clean net or gross split.
Why the Lease Language Matters More Than the Label
Two properties can both be marketed as triple net and carry different actual obligations, because lease language varies more than the shorthand suggests. Some triple net leases cap the tenant's responsibility for structural items after a certain dollar threshold, effectively pushing large capital repairs back to the landlord. A buyer should read the maintenance and repair clauses directly rather than relying on how the listing describes the lease, since the label is marketing shorthand and the clause is the actual agreement.
What This Means for Underwriting
The net structure determines how much of a building's income is genuinely passive. A triple net deal with clean lease language can run close to management-free for the landlord, while a double net deal still requires budgeting for roof replacement and structural repair on a timeline the landlord doesn't control. An investor comparing a double net offering against a triple net offering at similar cap rates should factor in the double net property's uncovered future capital costs before treating the two as equivalent.
Net Leases as 1031 Replacement Property
Any of these lease structures can sit inside a property that qualifies as replacement property in a 1031 exchange, since the tax code cares about the real estate being like-kind investment property, not the lease terms attached to it. What changes from structure to structure is how much ongoing landlord involvement the exchanging owner is signing up for, which is worth weighing against why they're exchanging in the first place.
Asset Type Questions
What is the actual difference between double net and triple net leases?
Double net shifts property taxes and insurance to the tenant but keeps maintenance, including roof and structure, with the landlord. Triple net shifts all three to the tenant. The gap matters because roof and structural repairs can be the largest unpredictable cost in owning a commercial building.
Does an nnn lease mean the landlord has zero responsibility?
Not always. Some leases marketed as triple net cap the tenant's obligation for major structural repairs above a set dollar amount, which shifts that cost back to the landlord. The lease's actual maintenance clause controls, not the marketing label.
Are net leases common for office space in Santa Barbara?
Less so downtown, where a modified gross structure is more typical, with a few specific costs passed through and most operating expenses staying with the landlord rather than a clean net or gross split.
Can a net-leased property be used in a 1031 exchange?
Yes. The lease structure doesn't affect 1031 eligibility; what matters is that the property itself is like-kind investment or business real estate. A single, double, or triple net deal can all serve as replacement property.
Why would a buyer accept a lower cap rate on a triple net deal versus a double net one?
Because the triple net structure removes future roof and structural repair costs from the landlord's side. That reduces both the financial exposure and the management burden, which can justify paying more for the same rental income.
