How to Evaluate a NNN Lease Before You Buy: A Step-by-Step Checklist

The Lease Is the Asset

In NNN real estate, the building is almost secondary. What you're really acquiring is a contractual income stream — the tenant's obligation to pay rent for a defined period under defined conditions. The quality of that income stream depends entirely on the quality of the lease document that creates it.

A thorough lease review before purchase is the single most important piece of due diligence in any NNN acquisition. Here's a systematic framework for evaluating a NNN lease.

Step 1: Identify the Tenant Entity

The first question in any NNN lease review: who is actually obligated to pay the rent?

• Corporate entity: If the signatory is McDonald's Corporation, Starbucks Corporation, or Dollar General Corporation — you have a corporate guarantee backed by a Fortune 500 balance sheet. This is the gold standard.
• Franchisee entity: If the signatory is "ABC Restaurant Group LLC" or "Smith Enterprises, Inc." operating a branded concept — the guarantee is only as strong as that franchisee's financial position. Request financial statements.
• Hybrid guarantee: Some deals involve a franchisee as the primary tenant with a limited corporate guarantee for specific obligations. Understand exactly what the corporate entity is guaranteeing.

This single determination can change the risk profile of a deal dramatically. A Taco Bell franchisee operating 3 locations is a fundamentally different credit risk than Taco Bell Corporate (owned by Yum! Brands, NYSE: YUM).

Step 2: Verify the Lease Type

Confirm exactly what expenses the tenant is responsible for — and what, if anything, remains with the landlord:

• Absolute NNN: Tenant pays taxes, insurance, maintenance, AND structural repairs (roof, HVAC, foundation). Zero landlord obligations. This is what most buyers expect when they hear "NNN."
• NNN with landlord roof/structure: Tenant pays taxes, insurance, and maintenance, but the landlord is responsible for roof replacement and structural repairs. This creates future capital expenditure obligations that must be underwritten.
• NN (Double Net): Tenant pays taxes and insurance; landlord pays maintenance and repairs. Significantly more landlord involvement than true NNN.

Always read the actual lease language — not the offering memorandum's summary. Marketing materials can oversimplify or miscategorize lease type.

Step 3: Analyze the Lease Term

Lease term remaining is one of the most critical value drivers in NNN investing:

• 15+ years primary term remaining: Maximum value — long-term income security, highest institutional demand at disposition
• 10–14 years: Strong — still premium investment quality, some cap rate premium to offset approaching option periods
• 5–9 years: Requires careful analysis — is current rent above or below market? What does the lease say about renewal rents?
• Under 5 years: Requires deep analysis — you may effectively be buying a real estate redevelopment opportunity rather than an income investment. Cap rate should reflect this risk.

Also review the renewal option terms: How many options? How long is each option period? Most importantly — what is the rent during the option periods? Some leases set option rent at fair market value (requiring negotiation), while others fix it at a predetermined percentage increase over in-place rent.

Step 4: Map the Rent Escalation Schedule

Calculate the rent at every step of the primary term and all option periods:

• 10% every 5 years: The most common QSR and retail NNN structure. A $100,000 NOI becomes $110,000 at year 6, $121,000 at year 11, etc.
• 1.5%–2% annual bumps: Common in pharmacy and some big-box NNN structures. More frequent but smaller increases.
• Flat rent: No escalations — common in some older leases. A flat-rent lease has meaningful inflation risk for a long-term investor.
• CPI-linked: Adjustments tied to the Consumer Price Index. Provides inflation protection but creates income variability.

Build out a full rent schedule in a spreadsheet. This tells you exactly what you'll be earning in year 7, year 12, year 18 — and allows you to calculate the present value of the income stream at different discount rates.

Step 5: Check for Unusual Provisions

Beyond the standard terms, look carefully for provisions that could affect value or income:

• Co-tenancy clauses: The tenant's obligation to pay full rent is contingent on other tenants (anchors) remaining open. Common in in-line retail — less common in freestanding NNN. A co-tenancy clause is a significant risk factor.
• Termination options: Does the tenant have a right to terminate the lease early (with or without a penalty)? This is unusual in NNN but not unheard of — particularly in leases executed before the tenant's current growth trajectory was established.
• Exclusivity provisions: The tenant may have the right to limit other competing tenants in the surrounding area. This affects the landlord's ability to lease adjacent space if owning a multi-tenant property.
• ROFO/ROFR: Right of first offer or right of first refusal — the tenant may have the right to purchase the property if the owner decides to sell. This can complicate future disposition.
• Assignment and subletting rights: Can the tenant assign the lease without landlord consent? In corporate NNN deals, the corporate entity can typically transfer the lease in a merger or corporate restructuring without requiring landlord approval.

Step 6: Verify Rent vs. Market Rent

Always compare the lease rent to current market rental rates for comparable properties in the area. If in-place rent is significantly above market, the probability of renewal at lease expiration decreases — the tenant has less economic incentive to stay at above-market rent and may relocate or negotiate a substantial rent reduction.

If in-place rent is at or below market, the tenant is unlikely to leave (they're getting a favorable deal), and renewal is highly probable. This is a meaningful positive for income security beyond the primary term.

Step 7: Review Assignment History

Many NNN leases have been assigned one or more times as properties trade between investors. Review the assignment history to confirm: (a) all assignments were properly executed and consented to as required; (b) the current guarantor entity is the party originally obligated; and (c) there are no dormant claims or obligations from prior assignments.

Red Flags That Should Slow You Down

• Franchisee guarantee with no financial disclosure provided
• Lease term under 5 years with no confirmed renewal
• In-place rent significantly above current market
• Co-tenancy clauses with currently at-risk anchor tenants
• Landlord roof and structural obligations on an older building
• Unusual termination rights with low or no early termination fee
• Offering memorandum that summarizes "NNN" without a copy of the actual lease available for review