American Indian Owned Law Firm

Triple net vs. gross leases: What is the difference?

On Behalf of | Aug 11, 2026 | Commercial Real Estate Transactions & Leasing

A commercial lease can affect a business’s costs long after the parties agree on rent. The tenant may also have to cover certain expenses connected to the property. In Oklahoma, businesses should look beyond the advertised rental amount and determine which costs the agreement assigns to each side.

How a gross lease works

Under a gross rental arrangement, the tenant generally pays an agreed amount for use of the space. The property owner often handles many expenses tied to the building, such as taxes, insurance and upkeep of shared areas.

The tenant may still have separate financial duties. The agreement could require payment for utilities, interior repairs or other specific charges. Because the parties can structure these responsibilities differently, the lease itself remains important.

A gross structure can make budgeting easier when the rental amount covers most property expenses. However, tenants should not assume that every cost falls on the landlord.

How an NNN lease works

With an NNN arrangement, the tenant typically pays rent separately from certain property expenses. These may include tax assessments, building coverage and upkeep of shared portions of the property.

The amount a tenant pays can change during the lease term. For example, an increase in property taxes or maintenance costs could raise the tenant’s overall expenses even when the basic rent stays the same.

What should you check before signing?

Before agreeing to a commercial lease, review these issues:

  • Which costs must the tenant pay?
  • How does the landlord calculate shared-property expenses?
  • Can those charges increase during the term?
  • Who handles repairs inside and outside the leased space?
  • What records must the landlord provide for additional charges?

These provisions can make a major difference in the real cost of renting commercial space.

Why the wording matters

Oklahoma law recognizes contractual obligations based on agreements between parties, subject to applicable legal rules. The Oklahoma Legislature maintains the state’s landlord and tenant statutes and related legislative materials.

For that reason, businesses should examine the complete lease rather than rely on a quoted rental figure. Specific language about expenses, repairs, increases and payment deadlines can affect the parties’ rights and duties.

Understanding the cost structure before signing can help a business compare locations more accurately and avoid surprises during the lease term.