What it means
Commercial leases differ mainly in who pays for what beyond the rent itself. In a gross lease the landlord absorbs taxes, insurance and maintenance and builds an estimate of them into the rent; in a net lease those costs are stripped out and charged to the tenant separately.
The single net version, often written as N lease, transfers only property taxes. The landlord still insures the building and still handles the roof, the structure and usually the common areas, so the tenant's exposure is limited to one line item.
Landlords like it because property taxes are the cost they can least control. Local authorities revalue and reassess on their own schedule, and a reassessment can add a large sum mid-lease that a fixed gross rent would simply absorb.
Tenants accept it because base rent is normally lower than under an equivalent gross lease, and because taxes are at least visible and verifiable. The catch is that the tenant now carries a cost that can jump without warning.
Practical drafting matters more than the label. A well-written single net lease states whether the tenant pays the tax authority directly or reimburses the landlord, how bills are evidenced, who has the right to appeal an assessment, and what happens in a multi-tenant building where taxes must be apportioned by floor area.
Beware loose terminology. Agents sometimes describe any lease with a tax pass-through as "net", so the only reliable way to know what you are signing is to read the schedule of outgoings rather than trusting the name on the cover page.
In practice
Real-world examples.
Example
A regional printing firm leases a 6,000 square foot workshop on a single net basis at $15 per square foot. It budgets $90,000 of rent plus roughly $11,000 of property tax, and asks for a clause allowing it to join the landlord in appealing any reassessment above 10%.
Example
A property investor holding four small retail units converts new lettings to single net leases after a county-wide revaluation raised her tax bill by $28,000 in one year. Base rents were reduced slightly to reflect the change, but her income is no longer exposed to the next revaluation.
Example
A pharmacy chain signs a single net lease for a suburban unit and is surprised when the tax bill arrives addressed to the landlord. The lease requires reimbursement within 30 days of invoice, so the finance team sets up an accrual to smooth the annual charge across twelve months.
Think of it
“Single net means tenant pays property taxes-just one extra expense beyond rent.
Formula
Calculation
The tenant's total occupancy cost is:
Total annual cost = (base rent per square foot x area) + property taxes
Suppose a light industrial unit of 4,000 square feet is let at a base rent of $18.00 per square foot under a single net lease, with annual property taxes of $9,000. Base rent is 4,000 x $18.00 = $72,000. Adding the taxes gives the tenant a total annual cost of $72,000 + $9,000 = $81,000, which works out at $81,000 / 4,000 = $20.25 per square foot.
Now look at the landlord's side. Rent received is $72,000, out of which the landlord still pays building insurance of $3,000 and maintenance of $6,000, leaving $72,000 - $3,000 - $6,000 = $63,000 of net income. Under a comparable gross lease at $21.00 per square foot, the landlord would collect $84,000 but pay the $9,000 tax bill as well, leaving $84,000 - $9,000 - $3,000 - $6,000 = $66,000, and would carry the risk of a tax reassessment.Case study
Seen in the real world.
This is a fictional, illustrative case. Hollowbrook Estates owned a small industrial terrace of five units let on traditional gross leases at $20 per square foot across 30,000 square feet in total, producing $600,000 of rent. The owner paid taxes of $66,000, insurance of $22,000 and maintenance of $80,000, leaving $432,000 net.
A municipal revaluation then lifted the tax assessment by 40%, adding $26,400 in a single year with no ability to recover it from tenants until each lease expired. Net income fell to $405,600, and because the property was valued on a multiple of net income, the paper value of the terrace dropped by several hundred thousand dollars.
As leases came up for renewal, Hollowbrook moved each tenant to a single net structure, cutting base rent to $18 per square foot and passing taxes through. Rent fell to $540,000 across the terrace, but the tax line disappeared from the landlord's costs entirely. The illustrative point is that Hollowbrook traded roughly $60,000 of headline rent for the removal of a volatile cost it could neither predict nor control.
Watch out
Common mistakes.
- Assuming any lease described as "net" passes on all costs. A single net lease transfers property taxes only, leaving insurance and maintenance with the landlord.
- Comparing a net rent with a gross rent side by side. The net figure looks cheaper because taxes sit outside it, so a tenant must add the pass-through costs before judging which deal is better value.
- Ignoring the tax appeal rights in the lease. If the tenant pays the bill but only the landlord can challenge an assessment, a bad revaluation becomes an unrecoverable cost for the occupier.
Questions
People also ask.
How does a single net lease differ from a triple net lease?
A single net lease passes only property taxes to the tenant, while a triple net lease passes taxes, building insurance and maintenance, leaving the landlord with little more than the structure and the rent cheque.
Who actually pays the tax authority?
It depends on the drafting, since some leases have the tenant pay directly and others have the landlord pay and invoice the tenant for reimbursement, so the payment mechanics should be stated explicitly.
Is a single net lease better for the tenant or the landlord?
It suits a landlord who wants protection from tax reassessment and a tenant who wants a lower base rent and is comfortable carrying one variable cost, which is why it is common in single-occupier industrial property.
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