What is the difference between an NNN lease and an absolute net lease?

In a Triple Net (NNN) lease, the landlord retains responsibility for structural capital items, roof, foundation, and exterior walls. In an absolute net lease, the tenant assumes 100% of all costs including those structural elements, making it the most landlord-favorable structure. NNN tenants should ensure their leases explicitly exclude roof and foundation replacements from CAM.

Can my landlord include management fees in an NNN lease CAM pool?

Yes, but the fee must be capped and calculated correctly. Most NNN leases cap the management fee at 3–5% of collected rents or actual operating expenses (excluding taxes and insurance). Common overcharges include calculating the fee on grossed-up expenses, on non-CAM income, or stacking an "administrative fee" on top of the management fee. Always verify the fee basis matches the lease definition.

How does the pro-rata share calculation work in an NNN lease?

Your pro-rata share equals your leased square footage divided by the total leasable area of the building or center. Landlords commonly inflate your share by removing anchor tenant GLA, vacant suites, or non-leasable storage from the denominator. Your lease should specify the exact denominator to use, ideally "all constructed GLA", and that fraction should be fixed as a hard percentage.

What CAM expenses can I dispute in an NNN lease?

You can dispute capital expenditures billed as routine maintenance, management fees exceeding the lease cap, pro-rata share errors, controllable expense increases exceeding the CAM cap, and any excluded items listed in your lease (reserves, executive salaries, legal fees, income taxes). CamAudit runs all 12 forensic detection rules automatically against your reconciliation statement.

What is the difference between an NNN lease and an absolute net lease?

In a Triple Net (NNN) lease, the landlord retains responsibility for structural capital items, roof, foundation, and exterior walls. In an absolute net lease, the tenant assumes 100% of all costs including those structural elements, making it the most landlord-favorable structure. NNN tenants should ensure their leases explicitly exclude roof and foundation replacements from CAM.

Can my landlord include management fees in an NNN lease CAM pool?

Yes, but the fee must be capped and calculated correctly. Most NNN leases cap the management fee at 3–5% of collected rents or actual operating expenses (excluding taxes and insurance). Common overcharges include calculating the fee on grossed-up expenses, on non-CAM income, or stacking an "administrative fee" on top of the management fee. Always verify the fee basis matches the lease definition.

How does the pro-rata share calculation work in an NNN lease?

Your pro-rata share equals your leased square footage divided by the total leasable area of the building or center. Landlords commonly inflate your share by removing anchor tenant GLA, vacant suites, or non-leasable storage from the denominator. Your lease should specify the exact denominator to use, ideally "all constructed GLA", and that fraction should be fixed as a hard percentage.

What CAM expenses can I dispute in an NNN lease?

You can dispute capital expenditures billed as routine maintenance, management fees exceeding the lease cap, pro-rata share errors, controllable expense increases exceeding the CAM cap, and any excluded items listed in your lease (reserves, executive salaries, legal fees, income taxes). CamAudit runs all 12 forensic detection rules automatically against your reconciliation statement.

Triple Net Lease (NNN) CAM Audit Guide

Tenants in Triple Net Lease (NNN) structures face specific overcharge risks tied to how expenses are allocated and billed. CamAudit runs 12 forensic detection rules on your reconciliation statement to identify every recoverable dollar.

Formal Definition

A commercial lease structure in which the tenant pays base rent plus their pro-rata share of all three major property expense categories: property taxes, building insurance premiums, and common area maintenance (CAM) costs. The landlord typically retains responsibility only for structural capital items such as the roof and foundation.

Expense Pass-Throughs

Tenant bears almost all operating expenses including property taxes, insurance, CAM, management fees, landscaping, parking lot maintenance, utilities, and security. Landlord retains structural obligations (roof replacement, foundation, exterior walls) unless lease language expands tenant responsibility to "absolute net" territory.

CAM Calculation & Billing

CAM charges are estimated monthly based on the prior year's actuals and billed as part of the tenant's monthly payment. At year-end, the landlord performs an annual reconciliation comparing actual expenses to estimates. Tenant pays the difference (or receives a credit). Charges are allocated on a pro-rata share basis: tenant's GLA divided by total building GLA.

Most Common Overcharge

Capital expenditures disguised as routine maintenance, a full roof membrane replacement billed as "repair," a parking lot mill-and-pave billed as "patching," or HVAC unit replacements billed as "maintenance." These are the single largest source of NNN lease overcharges because landlords must only amortize true CapEx items, not expense them in one year.

Common Industries

→Retail (strip centers, big-box)
→Medical / dental offices
→Standalone restaurant pad sites
→Pharmacy chains
→Auto parts retail
→Dollar stores

Audit Focus

Verify that structural replacement costs are excluded or properly amortized per GAAP useful life. Confirm management fee does not exceed the lease cap and is not calculated on grossed-up or non-CAM expenses. Audit the pro-rata share denominator to ensure all constructed GLA (including anchor tenant space) is included. Check for controllable expense cap violations on year-over-year increases.

Red Flags to Watch

▶Sudden spike in "maintenance" line items in the year a property is refinanced or sold
▶"Roof repair" or "parking lot repair" invoices with no vendor itemization
▶Management fee calculated as a percentage of total expenses including property taxes
▶Pro-rata share denominator that excludes anchor tenant GLA or vacant pad sites
▶Capital reserve fund contributions billed through CAM

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Related Resources

ResourcesCAM Audit by Tenant Type ToolsFree CAM Audit Tools GlossaryCAM Glossary ToolsPro-Rata Share Calculator

Frequently asked questions

This page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.