The lease structure question nobody explains clearly

When comparing commercial properties, most tenants focus on the rent per sqft and the location. What many miss is that the lease structure — NNN, Gross, or Modified Gross — can make an equally significant difference to the total cost of occupying a space.

This guide explains each lease structure in plain language and helps you decide which is right for your business.

What is a NNN lease

NNN stands for Triple Net. Under a NNN lease you pay a base rent to the landlord plus your proportionate share of three additional costs — property taxes, building insurance, and common area maintenance.

These outgoings are billed to tenants either monthly as an estimate with an annual reconciliation, or annually based on actual costs. The key characteristic of a NNN lease is that these costs are variable — they can increase year on year as tax assessments change, insurance premiums rise, and maintenance costs grow.

For a typical commercial property, outgoings under a NNN lease add between $8–$15/sqft per year on top of the base rent. This is a significant additional cost that must be factored into any tenancy budget.

What is a gross lease

Under a Gross lease you pay a single all-inclusive rent and the landlord covers all outgoings. This structure offers complete cost certainty — your monthly payment is fixed and you are not exposed to variable tax or maintenance increases.

The tradeoff is that Gross lease rents are typically higher than NNN rents for equivalent space because the landlord is pricing the outgoing risk into the face rent. However for businesses that value budget certainty — particularly startups and growing businesses managing cash flow carefully — this premium is often worth paying.

What is a modified gross lease

A Modified Gross lease is a negotiated middle ground between NNN and Gross. The most common structure is for the tenant to pay base rent plus utilities, while the landlord covers taxes, insurance, and maintenance. However the exact split is always negotiable and varies from deal to deal.

Modified Gross leases are common in multi-tenant office buildings where the landlord wants to maintain control over building-wide costs while passing some variable expenses to tenants. They represent a reasonable compromise that protects both parties.

How to choose the right structure

The right lease structure depends on three factors — your budget certainty requirements, your ability to absorb variable costs, and the relative face rents being offered.

If you are a growing business with tight cash flow management requirements, push for a Gross or Modified Gross structure even if the face rent is slightly higher. The predictability is worth the premium.

If you are an established business with stable cash flow and the ability to absorb some cost variability, a NNN lease at a lower face rent may deliver better value over the full lease term.

In all cases have your broker model out the total occupancy cost — base rent plus estimated outgoings — for any NNN lease before comparing it to a Gross alternative. This is the only meaningful way to compare different lease structures on an apples-to-apples basis.

Always negotiate the structure

Remember that lease structures are negotiable. If a landlord presents a NNN lease and you prefer Gross, ask for Modified Gross as a starting point. Most landlords will negotiate the outgoing allocation if it means closing a deal with a quality tenant.

The worst outcome is accepting a lease structure that does not suit your business without ever asking whether it can be changed.