Triple Net Leases in Texas

By Hank FasthoffJuly 5, 2026

A triple net lease requires the tenant to pay base rent plus defined shares of property taxes, insurance costs, and property operating expenses. The label describes a general allocation of costs, but it never supplies the formula, exclusions, deadlines, or remedies that make the allocation enforceable.

Those details can change the occupancy cost by far more than an annual increase in base rent. You should test the complete expense language against the property, the landlord's historical statements, and the way your business will use the space.

NNN Is a Starting Label

Brokers, landlords, and tenants use gross, modified gross, double net, triple net, and absolute net as shorthand. No Texas statute defines those labels with universal terms, so two leases described as NNN can allocate roof repairs, capital projects, management fees, deductibles, and casualty costs differently.

A gross lease generally places more operating costs inside the stated rent. A modified gross lease divides selected expenses or charges the tenant for increases above a base year. A double net lease commonly adds taxes and insurance, while a triple net lease commonly adds taxes, insurance, and maintenance or operating expenses. An absolute net lease can place broader property obligations on the tenant, including structural repairs and replacement costs, but the written provisions control every category.

Base rent alone therefore provides an incomplete comparison. A better comparison uses the projected total occupancy cost, the range of possible increases, and the obligations that can arise outside the monthly invoice.

The Three Expense Categories

The first category covers real property taxes and assessments. A multi-tenant lease often allocates those charges through a proportionate share, while a single-tenant lease may allocate the entire bill. The definition should address ordinary taxes, special assessments, corrected assessments, tax consultant fees, refunds, protest costs, and taxes attributable to land or improvements outside the premises.

Insurance forms the second category. The landlord can pass through premiums for property, casualty, liability, flood, windstorm, terrorism, or other coverage maintained for the property. Your review should include deductibles, coverage limits, premiums caused by another tenant's use, and any insurance maintained for the landlord's business rather than the property.

Common area maintenance and operating expenses form the third and broadest category. Recoverable costs may include landscaping, utilities for shared areas, janitorial service, parking lot maintenance, security, management fees, repairs, and administrative expenses. Your lease should identify the covered property and separate shared operating costs from expenses associated with another tenant's premises, the landlord's financing, or the landlord's ownership structure.

Texas Requires a Stated Charge or Formula

Texas Property Code Section 93.012 generally bars a commercial landlord from assessing a charge other than rent or physical damage unless the lease or an incorporated document states the amount or the method for computing it. The statute also preserves charges and remedies available under other statutes or common law.

That rule makes the operating expense definition and its formulas central to the bargain. A lease that names operating costs without defining the pool, allocation fraction, or adjustment process leaves room for a dispute over whether the charge follows the written method.

In Best Buy Stores, L.P. v. Shops at Pinnacle Park, LLC, decided by the Dallas Court of Appeals in 2018, the lease limited operating costs to specified common area expenses, and the maintenance exhibit never mentioned security services. The court reversed part of the summary judgment and remanded the security cost dispute because a fact issue remained over whether the parties intended those costs to fall within the lease definition. The parties disputed whether maintaining the common areas included security because the lease left that term undefined.

Proportionate Share

A proportionate share often begins with the premises' rentable area divided by the rentable area of a building or project. The denominator can produce a different result if it excludes vacant space, undeveloped parcels, separately assessed buildings, pad sites, storage areas, or space occupied by the landlord or an affiliate.

Your lease should state the numerator, denominator, measurement standard, and events that permit a change. It should also address additions to the project, changes in building area, separately metered services, expenses that benefit only part of the property, and costs generated by a particular tenant.

A denominator limited to occupied space can shift vacancy costs to the remaining tenants. A fixed percentage can avoid that result, but it may become inaccurate after an expansion, subdivision, or redevelopment. The formula should match the physical property and remain testable from the landlord's records.

Gross Up Adjustments

A gross up provision computes selected variable expenses as though the property operated at an agreed occupancy level. The adjustment can keep a small group of tenants from receiving an artificially low expense base during vacancy and then facing a sharp increase when occupancy rises.

Only costs that vary with occupancy support that logic. Janitorial service, utilities, and similar variable expenses may change with use, while property taxes and many insurance premiums vary little with occupancy. Your lease should name the eligible categories, the assumed occupancy level, and the calculation method instead of relying on a general right to gross up expenses.

No single occupancy percentage governs every property. The appropriate figure depends on the building, its services, and the allocation formula. A transparent calculation should prevent the landlord from recovering more than the expense it reasonably would have incurred at the assumed occupancy level.

Estimates and Reconciliation

Under many NNN leases, the landlord collects one twelfth of an estimated annual expense amount each month and reconciles the estimate against actual costs after year end. Your lease should state when the landlord provides the budget, when the reconciliation arrives, when either party pays the balance, and whether a credit becomes a refund or an offset against future charges.

A deadline without an express consequence means little, because a date for delivering the reconciliation differs from a contractual bar on late charges. In 12636 Research Ltd. v. Indian Brothers, Inc., decided by the Austin Court of Appeals in 2021, the court rejected the tenant's argument that the landlord waived earlier common area charges, because the lease imposed no annual notice requirement of the kind the tenant asserted.

Your lease should provide for late reconciliations, corrected statements, reopened years, and obligations that continue after expiration. It should also define whether the tenant must pay a disputed amount while an audit proceeds and how any successful challenge affects default remedies.

Expense Caps

An operating expense cap limits increases in categories the parties define as controllable. Your cap provision should state which expenses fall inside the cap, which year supplies the starting amount, whether the cap compounds, and how the calculation treats a partial year, renewal term, expansion, or ownership change.

Property taxes, insurance premiums, utilities, snow or storm response, and costs imposed by law often appear outside a cap, but no universal rule requires those exclusions. Management fees, administrative charges, and service contracts require close review because the landlord may influence both the vendor and the price.

A percentage without a defined base offers little protection. You should model the first several lease years under both the landlord's reading and the tenant's reading, including the effect of compounding and every excluded category.

Capital Costs and Major Repairs

Capital expenditure treatment varies across NNN leases. Some leases exclude capital costs, while others allow limited recovery for legally required work, replacements that reduce operating expenses, or projects amortized over an identified useful life.

Your lease should separate routine maintenance from capital repair and replacement. If the landlord may include a capital cost in the expense pool, the provision should address the amortization period, interest rate, commencement date, projected savings, remaining lease term, and any amount attributable to another tenant or a future period.

An arbitrary dollar threshold can misclassify a recurring repair or divide one project into smaller invoices. Definitions tied to consistent accounting treatment, the nature of the work, and stated exceptions provide a stronger method. Roofs, foundations, structural components, paving, building systems, and code upgrades should receive direct treatment rather than depend on a general maintenance clause.

Audit Rights

Texas law supplies no general audit procedure for NNN reconciliations. Your lease should establish the right, the request period, the records available for review, the location or electronic access method, and the time allowed for the landlord's response.

Useful records can include general ledgers, invoices, tax bills, insurance statements, allocation schedules, management agreements, and calculations supporting gross up adjustments. The provision should also address confidentiality, the tenant's choice of accountant, restrictions on contingency fees, and responsibility for audit costs when the review identifies a material overcharge.

An audit right loses value when the request period expires before the tenant receives enough information to assess the statement. The review period should begin after delivery of both the reconciliation and the supporting detail required by the lease.

Texas Property Taxes After a Sale

Texas doesn't automatically reset a commercial property's taxable value to its purchase price after a sale. Tax Code Section 23.01 generally requires appraisal at market value as of January 1, and the Texas Comptroller explains that appraisal districts use the sales comparison, income, and cost approaches as appropriate.

A recent sale may provide evidence of market value, and a change in value can increase the tenant's tax share. Your lease should address tax protests, consultant fees, settlements, refunds, corrected bills, and allocation of taxes for partial years. Historical bills supply useful context, but they never establish the future charge.

Reviewing the Total Occupancy Cost

Before signing, you should request historical operating statements, current tax and insurance information, the annual budget, and prior reconciliations. Those records can expose recurring increases, inconsistent classifications, and costs that the proposed lease would allocate differently.

Your financial model should combine base rent with taxes, insurance, operating expenses, management fees, capital cost exposure, utilities, and any tenant maintenance obligations. It should also test vacancy, a property sale, insurance increases, a tax valuation change, and a major building repair under the actual lease language.

An NNN lease shifts a defined set of property costs rather than a fixed industry package. A complete lease states each recoverable category, the allocation method, the supporting records, the review procedure, and the consequence when either party misses a deadline.