What are common landlord vs. tenant dispute points in NNN leases?

The most common NNN disputes involve four areas: (1) capital expenditures — tenants argue that roof replacement or HVAC replacement is the landlord's responsibility, while landlords pass them through as maintenance; (2) management fees — tenants dispute whether the landlord can pass through a management fee when the tenant manages their own space; (3) excluded expenses — items like leasing commissions, landlord administrative costs, and ground lease payments that leases often exclude but landlords sometimes include; and (4) gross-up — whether variable expenses can be adjusted to reflect full occupancy when actual occupancy is lower.

Can a landlord charge a management fee in an NNN lease?

This depends entirely on the lease language. Many NNN leases — especially in retail — permit the landlord to include a property management fee in CAM, typically 4–6% of operating expenses. Tenants negotiating NNN leases often cap the management fee or exclude it entirely for single-tenant properties where they handle their own maintenance. If the lease permits it, the management fee is a legitimate pass-through. If the lease is silent, landlords often include it anyway — and tenants who audit frequently find it as a disputed item.

Is roof replacement the landlord's responsibility in an NNN lease?

In a triple net lease, the answer depends on the lease's definition of 'structural' versus 'maintenance.' Routine roof maintenance and repairs are almost always CAM-eligible. Roof replacement is where disputes arise — many leases classify it as a capital expenditure that must be either amortized over its useful life (with only the annual amortized portion passed through) or excluded entirely from CAM as a landlord obligation. Without clear lease language, this is a common source of significant overbilling disputes. Any single-year roof replacement charge of $80,000+ passed through without amortization language is an audit red flag.

How do landlord obligations differ between NNN and modified-gross leases?

In a modified-gross lease, the landlord absorbs operating expenses up to a base year amount or expense stop, passing through only the excess. This shifts more financial risk to the landlord in years when costs stay flat but creates pass-through exposure in inflationary years. The landlord still typically handles structural capital items. In an absolute NNN (sometimes called a 'bond' lease), the tenant assumes virtually all obligations including structural repairs, creating minimal landlord financial exposure. Most retail and industrial leases fall somewhere between these poles — understanding the specific pass-through mechanism is essential before signing or auditing.

What Does a Landlord Pay in a Triple Net Lease? NNN Obligations Explained

Q: What does a landlord pay in a triple net lease?

In a true triple net lease, the landlord's financial obligations are narrow: they typically pay for structural repairs to the building shell (roof structure, foundation, exterior bearing walls), maintain property insurance on the building itself, and handle items specifically carved out in the lease. Everything else — operating expenses, taxes, insurance premiums, maintenance, utilities, and management — is passed through to the tenant as CAM or separate line items. In practice, even 'pure' NNN leases contain carve-outs that push some costs back to the landlord.

By Angel Campa·Founder, CapVeriUpdated April 24, 2026

Quick Answer

In a triple net lease, the landlord typically pays for structural repairs (roof structure, foundation, exterior walls), maintains building-level insurance, and handles items specifically carved out by lease language. Tenants pay operating expenses, taxes, insurance premiums, and CAM — but the exact split depends on how the lease defines each category.

What Does a Landlord Pay in a Triple Net Lease — The Role-by-Role Breakdown

The phrase "triple net" suggests a clean division: tenant pays operating expenses, taxes, and insurance; landlord collects rent and manages nothing. The reality is messier. Every NNN lease is negotiated, and the actual landlord/tenant expense split is determined by the specific definitions, exclusions, and carve-outs in that lease — not by the label.

Here's a practical breakdown of how responsibility typically divides, plus the dispute scenarios that actually show up in practice.

Structural Repairs and Building Shell

Typical landlord obligation. The vast majority of NNN leases — retail, industrial, and office — preserve the landlord's obligation for structural components:

Foundation
Exterior load-bearing walls
Structural roof members (trusses, decking, joists — not the membrane)

This isn't altruism; it's risk management. Lenders financing NNN properties need the landlord to remain responsible for catastrophic structural failures that could affect the collateral. Most loan documents require it.

The carve-out game. Landlord-friendly leases will try to narrow this language as much as possible. Watch for phrases like: "Landlord's structural repair obligation shall not include any repairs necessitated by the acts, negligence, or omissions of Tenant." In a warehouse setting, a forklift operator backing into a load-bearing column can shift what would otherwise be the landlord's structural obligation onto the tenant.

Roof: The Gray Zone

Roof obligations are the single most litigated category in NNN leases, and the dispute pattern is consistent: landlord passes through a $95,000 roof replacement as a maintenance expense; tenant receives the reconciliation, sees the charge, and immediately contests it.

Here's why it matters: a $95,000 charge on a 15,000 SF tenant is $6.33/SF in a single year. Properly amortized over 20 years at a reasonable interest rate, it might be $0.42/SF/year. The difference between those outcomes is a function of lease language, nothing else.

Best-practice NNN language for roof: "Capital expenditures (defined as items with a useful life exceeding one year and costing more than $10,000) shall be amortized over their useful life in accordance with GAAP, and only the annual amortized portion attributable to the current lease year shall be included in CAM."

Leases with this language are much easier to administer. See our CAM reconciliation guide for industrial for how amortization affects warehouse CAM specifically.

Operating Expenses: Tenant's Domain

In a standard NNN structure, the tenant is responsible for passing through — or directly paying — the following:

Property taxes. The tenant's pro-rata share of real estate taxes assessed on the property. Tax bills often arrive on a different cycle than operating expenses, which is why real estate tax reconciliation is typically handled separately from standard CAM reconciliation. If the landlord pursues a property tax protest and wins a reduction, the tenant's pro-rata benefit passes through in the following reconciliation.

Insurance. The tenant typically pays for their own content/business interruption insurance plus their pro-rata share of the landlord's property insurance premium. In multi-tenant buildings, the landlord carries the property policy and passes the premium through as a CAM item. In absolute NNN (ground leases or single-tenant), the tenant often carries the property policy directly.

Utilities. Directly metered utilities are paid by the tenant directly. Shared utilities (common area lighting, irrigation, parking lot) flow through CAM. See what's included in CAM expenses for a full breakdown.

Common area maintenance. Everything from landscaping and parking lot sweeping to security, signage maintenance, and common area utilities. This is the core of CAM reconciliation — and the category where most overbilling occurs.

Management fees. Lease-dependent. In multi-tenant retail, 4–6% of operating expenses is common. In single-tenant industrial, it's frequently negotiated out entirely. If your NNN lease permits it, document the calculation method clearly in your reconciliation — it's audited frequently.

Capital Expenditures: The Biggest Landlord/Tenant Battle

Capital expenditures are expenses for items with useful lives exceeding one year — roof replacement, HVAC replacement, parking lot resurfacing, elevator modernization. How these are handled defines the financial character of the lease more than almost anything else.

Three common approaches:

Pass-through as CAM: Landlord passes the full cost in the year incurred. Tenant bears the full hit. This is common in older, landlord-friendly retail leases. Tenants hate it, and for good reason: a $200,000 parking lot replacement on a 50,000 SF property is $4/SF in a single year.
Amortized pass-through: Capital items are amortized over useful life, with only the annual portion included in CAM. Better for tenants, especially those on shorter lease terms who don't benefit from the full useful life of the improvement. This is the outcome tenants should push for in lease clause negotiations.
Landlord's sole responsibility: Some leases exclude capital expenditures from CAM entirely, making them the landlord's cost. This is common in absolute NNN ground leases where the tenant controls the building, but uncommon in multi-tenant retail.

Practical example: A 30,000 SF shopping center has a roof replacement costing $180,000. A tenant occupying 6,000 SF has a 20% pro-rata share — $36,000. Under a full-pass-through structure, they get a $36,000 charge in year one. Under proper amortization over 20 years, their annual charge is $1,800/year ($0.30/SF). The amortization approach more accurately matches the expense to the benefit period and doesn't create one-time spikes that distort lease economics.

Excluded Expense Categories

Standard NNN leases in institutional portfolios typically include an exclusion list — expenses the landlord cannot pass through regardless of whether they're "operating" in nature:

Leasing commissions and tenant improvement costs for other tenants
Marketing and advertising for the property or center
Ground lease payments
Debt service and financing costs
Depreciation
Executive salaries not directly related to property management
Costs covered by insurance proceeds
Fines and penalties resulting from the landlord's violations

These exclusions protect tenants from subsidizing the landlord's cost of capital or their leasing activities. Properties that lack clear exclusion lists — or that have exclusion lists that aren't enforced — show up frequently in CAM audit findings.

Anchor Tenant Exclusions in Multi-Tenant NNN

In retail shopping centers with anchor tenants, a specific issue arises: anchor leases often contain CAM exclusions or caps that shift more CAM cost onto inline tenants. The anchor might pay no CAM, a fixed contribution, or CAM on a smaller definition of eligible expenses.

When an anchor exclusion applies, the remaining tenants collectively absorb a larger share of common area costs. Landlords are required to apply this correctly in the pro-rata share calculation — typically by removing the anchor's denominator from the total building area. Tenants who discover their pro-rata share was calculated incorrectly — because the anchor's square footage wasn't excluded from the denominator — have grounds for a refund claim.

Insurance: Landlord's Building Policy vs. Tenant's Coverage

The landlord maintains the property insurance policy on the building. The premium flows through CAM on a pro-rata basis. This is straightforward in theory but creates disputes in practice when:

The landlord adds riders or coverage enhancements that benefit only the landlord (e.g., business interruption coverage for the landlord's lost rent)
The landlord's insurance covers multiple properties under a blanket policy, and the allocation method isn't disclosed
The premium increases dramatically in one year due to a claim, and tenants question whether they should absorb the increase

If your NNN lease passes through the landlord's insurance premium, the reconciliation statement should show the current-year premium, the prior-year premium, and the allocation method. For properties in high-tax or high-insurance markets, insurance cost transparency matters more than ever.

Common Dispute Scenarios

These are the NNN expense disputes that show up repeatedly in audits and arbitrations:

Dispute 1: HVAC replacement. A 20-year-old HVAC unit in a 12,000 SF inline retail space fails. Landlord replaces it for $48,000 and passes the cost through as maintenance. Tenant receives the reconciliation and objects — the unit's useful life is gone, this is capital, not maintenance. Absent clear lease language, this is a legitimate dispute. The tenant's leverage is stronger if the lease has any capital expenditure limitation language.

Dispute 2: Management fee on a single-tenant property. Landlord charges a 5% management fee on a single-tenant warehouse where the tenant manages their own operations. The lease permits it, but the tenant argues they're subsidizing management of a property they effectively control. Resolution depends on lease language — if it's in there, it's in there, but it's worth negotiating out at lease signing.

Dispute 3: Gross-up adjustment on shared utilities. The building is 72% occupied. The landlord grosses up common area electrical to 95% occupancy, increasing the tenant's share. Tenant disputes whether gross-up applies to utilities — many leases only permit gross-up on "variable" expenses, and some tenants argue utilities are variable only at the individual-unit level, not the common area level.

Dispute 4: Tax year timing. The tax authority issues a supplemental tax bill in June for a fiscal year that ended the prior December. Landlord passes it through in the current reconciliation. Tenant argues it belongs to the prior year's reconciliation, where it would be subject to a cap or would have resulted in a credit. Tax timing disputes are especially common in California (Prop 13 reassessments) and jurisdictions with fiscal years that don't align with the calendar year.

Using CapVeri to Manage NNN Expense Pass-Throughs

NNN lease administration is more complex than it looks on paper. The categories are right, but the details — exclusion lists, capital carve-outs, gross-up methodology, tax timing — require consistent application across every reconciliation year.

CapVeri automates the reconciliation workflow for NNN leases by ingesting your GL exports directly from Yardi or MRI, applying your lease-specific definitions, and flagging anomalies that indicate potential overbilling or misclassification. Start with a free trial to see how your current reconciliations stack up.

For related reading on lease structure and expense obligations, see our guides on controllable vs. non-controllable CAM, NNN CAM reconciliation, and tenant audit rights.