Definition
A gross lease is a lease structure where the tenant pays a single, “all-in†rent amount and the landlord generally pays the property’s operating expenses (such as taxes, insurance, and maintenance). In other words, expenses are largely embedded in the rent, rather than billed as separate line items.
What the Landlord Typically Pays
Gross leases vary, but landlords commonly cover most building operating expenses. Typical landlord-paid categories include:
- Real estate taxes (and many assessments, depending on the lease)
- Property insurance
- Repairs and maintenance for building systems and common areas
- CAM-type items such as landscaping, snow removal, parking lot upkeep, and common-area lighting
- Common utilities (often), while tenants may still pay separately metered in-suite utilities
Always verify the lease’s “included expenses†list—some gross leases are truly all-in, while others carve out utilities, janitorial, or certain service categories.
Gross vs. Modified Gross vs. NNN
Lease type is really about who bears expense inflation and how transparently costs are passed through.
- Gross lease: landlord pays most operating expenses; tenant pays a single rent amount.
- Modified gross: rent includes some expenses, but tenants reimburse certain categories or increases above a baseline. (Modified Gross Lease)
- NNN (triple net): tenant pays base rent plus reimbursements for taxes, insurance, and CAM. (NNN (Triple Net))
Expense Stops and Base Years
Many “gross†leases include a mechanism to protect the landlord from rising expenses:
- Base year: the first lease year is used as a baseline; tenants pay increases in operating expenses above that base.
- Expense stop: the landlord pays expenses up to a set amount per square foot; tenant reimburses amounts above the stop.
When a gross lease includes a base year or expense stop, it begins to behave like a modified gross lease.
Why It Matters
Gross leases simplify tenant budgeting and often appeal to smaller tenants who prefer predictable payments. For owners, the tradeoff is that the landlord may carry more expense inflation risk, especially for volatile items like taxes, insurance, and utilities—unless the lease includes an expense stop or base-year pass-through.
Investor Uses
- Underwriting expenses: gross-leased properties require careful modeling of operating expense growth and margins.
- Lease review: identify expense stops, base years, caps, and exclusions that change who pays what.
- Risk management: evaluate exposure to taxes/insurance volatility and how quickly rent can reset to offset it.
- Comparing deals: convert gross rents to “net effective†economics for apples-to-apples comparisons with NNN deals.
Example
An office tenant signs a gross lease for $40.00/RSF/year for 5,000 RSF. The landlord pays building operating expenses. If annual operating expenses rise sharply, the landlord’s NOI margin compresses unless:
- the lease includes an expense stop (tenant pays amounts above the stop), or
- the landlord can increase rent at renewal to reprice the expense load.
Common Pitfalls
- Assuming “gross†means no pass-throughs: many gross leases still have base years, expense stops, or utility carve-outs.
- Ignoring expense volatility: taxes and insurance can move fast; gross owners wear that risk.
- Misreading utility responsibility: separately metered suite utilities may still be tenant-paid.
- Bad comps: comparing gross rent to NNN rent without adjusting for expense load leads to wrong conclusions.
- Renewal risk: if rent can’t be reset meaningfully at rollover, expense inflation can erode returns.