CRE
Types of Commercial Leases: Gross, Net, NNN
By Khai Tran · · 5 min read
Gross, net, and NNN describe different ways to allocate property expenses. Learn what to compare, then check the actual lease for exceptions and responsibilities.
Comparing Commercial Lease Expenses
Lease labels are a starting point for understanding who pays each cost. The actual document, amendments, and applicable law determine the obligations. Use this guide to organize questions for your broker and qualified attorney.
What Commercial Leases Really Determine
Expense allocation is one part of a commercial lease. Use, term, renewal rights, defaults, maintenance, and other provisions also matter.
Think in three layers:
- Base rent
- Operating expenses (OpEx)
- Risk and responsibility
Compare the total occupancy cost and obligations, not base rent alone. An expense pass-through can change the tenant’s cost even when base rent is fixed.
Gross Leases
In a gross lease, rent generally includes some property operating expenses. Full-service and modified-gross arrangements vary. Read the lease for base-year provisions, expense stops, utilities, exclusions, and rent increases.
Questions to Check
- Which expenses are included in rent?
- Can the landlord pass through increases above a base year or expense stop?
- Who pays utilities, parking, repairs, and other additional charges?
- When can rent or reimbursements change?
Example Explanation
“This rent includes the expenses listed in the lease. Let’s check the exclusions and adjustment provisions before estimating your total cost.”
Net Leases: Splitting Costs with Clarity
A Net Lease introduces shared responsibility. The tenant pays base rent plus one or more expense categories.
Three Subtypes
- N Lease (Single Net): tenant pays property taxes
- NN Lease (Double Net): tenant pays taxes and insurance
- NNN Lease (Triple Net): tenant pays taxes, insurance, and CAM
These are common descriptions, not substitutes for reading the expense definitions and exclusions in the lease.
NNN Leases
A triple-net lease generally assigns taxes, insurance, and specified maintenance or operating costs to the tenant in addition to base rent. Responsibilities for the roof, structure, capital work, and other items vary by agreement.
What to Review
- Which expenses are recoverable, and which are excluded?
- Are there caps, audit rights, or reconciliation requirements?
- Who handles repairs, replacements, and capital spending?
- What remains the landlord’s responsibility during vacancy or tenant default?
Expense recovery does not eliminate vacancy, collection, capital, or tenant-credit risk. Compare the actual obligations and total cost for each property.
How to Compare the Three Quickly
| Common Label | Typical Tenant Expense Allocation | Check in the Lease |
|---|---|---|
| Gross | Rent includes specified operating expenses | Stops, base years, utilities, exclusions, and increases |
| Net (N) | Base rent plus property taxes | Exact definitions and remaining obligations |
| Net (NN) | Base rent plus taxes and insurance | Exact definitions and remaining obligations |
| NNN | Base rent plus taxes, insurance, and specified maintenance/operating costs | Roof, structure, capital work, exclusions, caps, and reconciliation |
Hypothetical Investor Email
Use this structure after reviewing the property documents. Replace each placeholder with verified information.
Investor Email Template
Subject: Quick Breakdown of Lease Structure on the Main St. Retail Listing
Hi [Investor Name],
Here’s a clean summary of the lease structure on the Main St. property:
- The lease allocates [specified expenses] to the tenant.
- The landlord remains responsible for [items confirmed in the lease].
- Reported reimbursements are [amount and period]; we still need [documents] to reconcile them.
- Using [annual NOI] and [price], the illustrated cap rate is [percentage]. This ratio excludes financing, capital spending, transaction costs, investor income taxes, and appreciation.
Let me know if you want a rolled-up cash flow or a cash-on-cash estimate based on your financing assumptions.
Best, [Your Name]
How to Teach Lease Types to Clients Without Overwhelming Them
Use the “Three-Box Method”
Create three boxes on a notepad:
- Base Rent
- Taxes + Insurance
- Maintenance (CAM)
Then check which boxes the tenant pays.
Why This Works
Clients understand faster when they can see the responsibility shift. This method removes jargon and builds your authority without being technical.
Lease Type Red Flags Agents Should Watch For
1. CAM Caps That Don’t Actually Cap Anything
Check which expenses a cap covers, which it excludes, and how increases are calculated.
2. Old Buildings with “NNN-Style” CAM
If there’s deferred maintenance, tenants may push back or demand concessions.
3. Gross Leases Priced Too Low
The landlord might be quietly absorbing unprofitable OpEx.
4. Leases Without Reconciliation Language
Check how estimates, actual costs, audits, and adjustments are handled, and raise unclear terms with a qualified attorney.
Practice the Explanation
Use the actual lease terms to practice a short explanation before the client conversation.
Three Simple Lines to Build Their Confidence
- “Here’s the simplest way to think about this lease…”
- “Let me break this into what you pay and what the landlord pays.”
- “Tell me what matters more to you: predictability or control?”
These lines guide the conversation and reduce pressure.
Compare the Actual Terms
Build an occupancy-cost estimate for each option using the lease terms and documented expenses. Separate fixed amounts from estimates, and test how costs change if taxes, insurance, or maintenance rise. Identify unresolved obligations before making a recommendation.