Warehouse leases in the United States are almost always structured as triple net (NNN) leases, meaning tenants pay base rent plus property taxes, insurance, and maintenance costs. For businesses leasing distribution or storage space, this can mean the actual monthly cost is 30-50% higher than the listed base rent. The danger lies in how these pass-through costs are defined, estimated, and reconciled — landlords often retain broad discretion over what qualifies as a recoverable expense. Before signing a warehouse NNN lease, you need to understand exactly which costs you're absorbing, how annual reconciliation works, and what caps or controls exist on cost escalation. Many tenants sign based on the base rent figure alone, only to face surprise bills for roof repairs, parking lot resurfacing, or property management fees they didn't anticipate.
What is a Triple Net Terms?
A triple net warehouse lease is a commercial lease where the tenant pays base rent plus three categories of 'net' costs: property taxes, building insurance, and common area maintenance (CAM). Unlike a gross lease where the landlord bundles everything into one rent figure, a NNN lease shifts most operating costs to the tenant. The landlord estimates these costs annually, collects monthly installments, then reconciles actual expenses at year-end — which can result in significant additional charges.
Red flags to watch for
Without an annual cap (typically 3-5%), your maintenance costs can spike dramatically if the landlord undertakes major repairs or improvements and passes 100% of the cost through.
Roof replacements, HVAC system upgrades, and structural repairs are capital expenditures that should be the landlord's responsibility. If included in CAM, you could be paying for improvements that outlast your lease term.
Some landlords insure the property through affiliated companies at above-market rates and pass the inflated premium to tenants. You should have the right to review and challenge insurance costs.
Without the right to audit the landlord's books, you have no way to verify that the expenses charged to you are accurate or legitimate.
In multi-building industrial parks, landlords may allocate shared costs across all tenants regardless of whether your building benefits. You could be subsidizing improvements to facilities you never use.
A management fee of 5-15% on top of already high operating costs creates a perverse incentive for the landlord to increase expenses, since their fee grows proportionally.
Your legal rights
Commercial leases in the US are governed primarily by state contract law and the Uniform Commercial Code (UCC) Article 2A for personal property leases, though real property leases are largely governed by common law and state statutes. Unlike residential tenants, commercial warehouse tenants have fewer statutory protections — most rights must be negotiated into the lease. However, the implied covenant of good faith and fair dealing (recognized in most states) prevents landlords from exercising discretion in bad faith when calculating pass-through expenses. Some states, like California (Civil Code § 1950.7), limit security deposits for commercial tenants, while others, like New York, have specific commercial lease disclosure requirements. The Americans with Disabilities Act (ADA) may also affect warehouse lease obligations regarding facility accessibility.
Questions to ask before you sign
- 1What is the estimated total monthly cost including base rent and all NNN charges, and how has it changed over the past three years?
- 2Is there an annual cap on CAM cost increases, and does it apply to all expense categories including taxes and insurance?
- 3Do I have the right to audit the landlord's operating expense records, and what is the process?
- 4Are capital expenditures excluded from CAM charges, and if amortized, over what period?
- 5What is the management fee structure, and is it a fixed amount or percentage of operating costs?
- 6How are shared costs allocated if this is a multi-tenant or multi-building property?
Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.