One of the most important parts of evaluating commercial space is understanding the lease structure. Two spaces with similar asking rents can have very different total costs depending on whether the lease is gross or NNN.
For small businesses, this matters a lot. The lease type affects budgeting, predictability, and the true cost of occupancy.
What is a gross lease?
In a gross lease, the quoted rent typically includes more of the building’s operating costs.
That can mean a simpler monthly expense and easier budgeting, especially for smaller tenants that want more predictability.
Gross leases can be attractive because they are easier to understand at a high level. But it is still important to confirm exactly what is included.
What is an NNN lease?
NNN stands for triple net. In an NNN lease, tenants typically pay base rent plus a share of certain property expenses, often including:
- property taxes
- insurance
- common area maintenance
This can make the advertised base rate look lower at first glance, even though the real monthly cost may be meaningfully higher after expenses are added.
Why the distinction matters
A space quoted at one rate under a gross lease may actually be more competitive than a lower quoted space under an NNN structure.
That is why businesses should avoid comparing only the headline rent.
The better comparison is:
- total monthly occupancy cost
- expected annual increases
- variability in operating expenses
- what is and is not included
What small businesses should ask
When reviewing any commercial lease, ask:
- Is this gross, modified gross, or NNN?
- What operating expenses are passed through to the tenant?
- Are there historical numbers for taxes, insurance, and CAM?
- Are there expense stops or caps?
- How are future increases handled?
These questions can prevent surprises and make side-by-side comparisons much more accurate.
Predictability vs flexibility
Gross leases often feel simpler and more predictable, which can be helpful for businesses trying to manage cash flow carefully.
NNN leases may offer different economics depending on the market and property, but they usually require more attention to the details behind the quoted rent.
Neither structure is automatically better. The right choice depends on the space, the landlord, and how much cost variability the business is comfortable taking on.
Final thought
When comparing commercial space, always ask what the quoted rent actually means. Lease structure matters just as much as location and square footage.
If you are evaluating office space more broadly, this guide may help:
How to Evaluate Office Space Before You Lease
And if you are actively comparing markets, start here: