Deal terms

Triple Net (NNN) Leases in Australia: A Buyer's Guide

13 April 2026 14 min read Bold acquisition desk

A triple net lease, or NNN, hands the landlord a clean, predictable income and almost none of the work. The tenant pays the base rent and every property outgoing on top, so the owner collects a commercial property income that behaves less like managed property and more like a fixed-income instrument. For an investor who wants a hands-off asset, it is the natural structure to reach for.

"Triple net" does not mean the same thing in every market. The term comes from the United States, where the three nets are property taxes, insurance, and common area maintenance. The idea carries across to Australia: the tenant bears all or substantially all operating costs. What differs, and differs enough to matter, is the legal framework, the categories of outgoings, and the regulatory protections that apply state by state.

A triple net lease does not eliminate risk. It transfers operational cost risk from the landlord to the tenant. Knowing exactly what transfers, and what does not, is the difference between a genuinely passive investment and an unpleasant surprise.

1 What Triple Net Means in Australia

In Australian commercial property, a triple net lease (sometimes called a "fully net" or "net net net" lease) puts the base rent plus every property outgoing onto the tenant. The landlord's income arrives net, with nothing deducted for operating costs. The tenant carries every cost of occupying and maintaining the premises, which usually means:

Council rates: levied by the local council based on property value
Water and sewerage rates: usage charges and fixed service fees
Land tax: a state government tax calculated on unimproved land value (rules vary by state)
Building insurance: covering the structure, not the tenant's contents or public liability
Routine maintenance: HVAC servicing, plumbing, electrical, pest control, and general upkeep
Structural repairs: roof, walls, foundations, and load-bearing elements
Common area maintenance (CAM): shared driveways, car parks, landscaping, and external lighting
Management fees: if a managing agent is appointed, the tenant may reimburse this cost

What separates a triple net lease from a standard net lease is structural repairs, capital works, and land tax. On a standard net lease the landlord usually keeps responsibility for those categories. On a true NNN lease, virtually everything shifts to the tenant.

2 Typical Outgoings Breakdown

You cannot compare an NNN investment with a gross lease one until you know what the outgoings actually add up to. The table below sets out a typical annual outgoings breakdown for a 500 sqm industrial property in metropolitan Melbourne worth roughly $1.8 million.

Outgoing Category	Annual Cost	% of Total
Council rates	$6,200	16%
Water & sewerage	$2,800	7%
Land tax	$8,500	22%
Building insurance	$5,400	14%
Routine maintenance	$4,800	12%
Structural maintenance reserve	$3,600	9%
Common area / external	$3,200	8%
Management fees	$4,500	12%
Total outgoings	$39,000	100%

On a gross lease the landlord swallows these costs. On a triple net lease the tenant pays them directly. That $39,000 per annum is the gap between gross income and net income, and it is why headline yields on gross and NNN leases cannot be read side by side.

3 Calculating True Yield: NNN vs Gross Lease

The most common mistake investors make comparing commercial properties is treating gross yield and net yield as the same number. They are not. Take two properties, both priced at $1,800,000.

Metric	Property A (Gross Lease)	Property B (NNN Lease)
Purchase price	$1,800,000	$1,800,000
Gross rent (p.a.)	$126,000	$99,000
Gross yield	7.00%	5.50%
Annual outgoings	$39,000 (landlord pays)	$0 (tenant pays)
Net income (before finance)	$87,000	$99,000
True net yield	4.83%	5.50%

Property A looks better at a glance: a 7% gross yield against 5.5%. Deduct the $39,000 in outgoings the landlord has to absorb, though, and Property A's true net yield is only 4.83%. Property B, with the lower headline number, actually returns more on a net basis and carries no outgoings risk or management burden.

Experienced commercial investors compare on a net yield basis for exactly this reason. The formula is simple:

Net Yield = (Gross Rent − Non-Recoverable Outgoings) ÷ Purchase Price × 100

On a true triple net lease, non-recoverable outgoings are zero, or close to it, so gross yield and net yield land at effectively the same number. On a gross lease the gap runs 1.5 to 2.5 percentage points, which is real money over the life of an investment.

4 Where NNN Leases Are Most Common

Triple net leases dominate some property sectors in Australia and barely appear in others. Knowing where they cluster helps you point your search at the right assets.

Industrial and logistics

The vast majority of industrial leases in Australia are structured as triple net. Single-tenant warehouses, distribution centres, cold storage facilities, and manufacturing plants almost always run on NNN terms. The tenant occupies the whole building, controls the maintenance, and has a direct stake in keeping it operational. National tenants such as logistics operators, food distributors, and e-commerce fulfilment providers routinely sign NNN leases for terms of 5 to 15 years.

Large-format retail

Standalone retail leased to national chains, hardware stores, automotive service centres, fast-food restaurants, and bulky goods retailers is typically triple net. The tenant fits out the premises to its own specifications and takes full responsibility for maintenance and repair. Passive investors chase these assets precisely because the lease structure keeps them out of the day-to-day.

Single-tenant commercial

Purpose-built office or commercial premises leased to a single tenant, such as a medical centre, childcare facility, or government department, are often structured as NNN. The terms tend to be long, 7 to 20 years, with fixed annual increases or CPI-linked reviews, which makes the income stream very predictable.

Where NNN is uncommon

Multi-tenanted office buildings, shopping centres, and mixed-use developments are rarely structured as triple net. Shared services, common areas, and tangled outgoings allocations make it impractical to push every cost onto individual tenants. Here the norm is a net lease, where the tenant pays a share of outgoings while the landlord keeps structural and capital responsibility, or a gross lease.

5 Retail Leases Act Implications by State

Australia has no single national retail leasing framework. Each state and territory runs its own Retail Leases Act, or equivalent legislation, and each sets its own rules on which outgoings can be recovered from retail tenants, how they must be disclosed, and what the landlord must provide. Where your NNN property falls inside a Retail Leases Act, several of those provisions will shape how the outgoings are structured.

Key legislation by state

State / Territory	Legislation	Key Outgoings Provisions
Victoria	Retail Leases Act 2003	Outgoings must be disclosed in the disclosure statement before lease signing. Land tax recovery is prohibited for retail premises. Landlord must provide audited outgoings statements annually.
New South Wales	Retail Leases Act 1994	Outgoings estimates must be provided before lease execution. Land tax cannot be recovered from retail tenants. Sinking fund contributions for capital works are regulated.
Queensland	Retail Shop Leases Act 1994	Detailed outgoings disclosure required. Land tax is recoverable from retail tenants (unlike VIC and NSW). Landlord must provide annual outgoings statements and reconciliations.
South Australia	Retail and Commercial Leases Act 1995	Outgoings disclosure in the information brochure. Land tax recovery is permitted. Landlord must provide outgoings estimates and annual reconciliations.
Western Australia	Commercial Tenancy (Retail Shops) Agreements Act 1985	Outgoings disclosure required. Land tax is generally recoverable. Landlord must provide estimates and annual statements within prescribed timeframes.
Tasmania	Fair Trading (Code of Practice for Retail Tenancies) Regulations 1998	Voluntary code of practice. Less prescriptive than mainland states but still requires reasonable outgoings disclosure.
ACT	Leases (Commercial and Retail) Act 2001	Outgoings disclosure and annual statements required. Land tax recovery is permitted. Dispute resolution through ACAT.
Northern Territory	Business Tenancies (Fair Dealings) Act 2003	Disclosure statement required. Outgoings must be reasonable and properly apportioned.

The land tax question

The biggest state-by-state difference for NNN investors is land tax recovery. In Victoria and New South Wales, the Retail Leases Acts stop landlords recovering land tax from retail tenants. So even on a "triple net" retail lease in VIC or NSW, the landlord carries the land tax, and in high-value locations that is a substantial figure.

In Queensland, South Australia, Western Australia, the ACT, and the Northern Territory, land tax is generally recoverable from retail tenants, so a true triple net structure is achievable.

For industrial and commercial (non-retail) premises, the Retail Leases Acts do not apply, and land tax recovery comes down to what the parties negotiate. Most industrial NNN leases in every state list land tax as a recoverable outgoing.

When does the Retail Leases Act apply?

The Acts generally cover premises used wholly or predominantly to sell goods or services to the public, either sitting in a retail shopping centre or below a set floor area, typically 1,000 sqm in most states. Industrial premises, warehouses, and large commercial offices are usually excluded. The edges are not always clean: a showroom with a retail component, or a warehouse with a trade counter, can fall inside the scope depending on the predominant use.

Before you buy anything marketed as "triple net", confirm whether the lease sits within the Retail Leases Act in the relevant state, and if it does, which outgoings are legally recoverable.

6 Advantages and Risks of NNN Leases

Advantages for investors

Genuinely passive income. The landlord's role shrinks to collecting rent and monitoring lease compliance. There are no outgoings to manage, no maintenance calls to field, no insurance renewals to arrange, and no council rate increases to absorb.
Income predictability. The rent you receive is your net income. Nothing variable is deducted year to year. Pair that with fixed or CPI-linked rent reviews and you have a highly forecastable income stream over the lease term.
Lower management costs. With no outgoings to administer, the need for a property manager is reduced or gone entirely. Some NNN investors self-manage, saving the 5% to 7% management fee a gross or net lease property would cost.
Simpler due diligence. When the tenant pays all outgoings, you do not have to forecast and model outgoings escalation. The capitalisation rate analysis is cleaner, with fewer assumptions to validate.
Attractive to lenders. NNN leases with strong tenants and long terms are viewed favourably by commercial lenders. Predictable income and low management risk can support higher loan-to-value ratios and sharper interest rates.

Risks for investors

Tenant covenant concentration. Most NNN properties are single-tenant assets. If the tenant defaults, enters administration, or vacates at lease expiry, income drops to zero immediately. There is no diversification across tenancies, so the strength of the tenant's business and balance sheet is everything.
Maintenance neglect. Because the tenant maintains the building, a distressed or negligent one may defer maintenance to save money. You can inherit a run-down asset at lease expiry that needs significant capital expenditure before it can be re-leased or sold.
Make-good enforcement. The make-good clause requires the tenant to return the premises to an agreed condition at lease end. If it is poorly drafted, or the tenant cannot afford to honour it, the landlord wears the remediation cost. Make sure make-good obligations are specific, measurable, and backed by a bank guarantee or security deposit.
Lower gross rent per square metre. NNN rents sit below gross rents per square metre because the tenant is separately carrying all costs. That can affect valuations in markets where comparable evidence mixes gross and net transactions.
Re-leasing risk at expiry. If the property was purpose-built for one tenant (a cold storage facility, say, or a specialised manufacturing plant), re-leasing to someone else may need costly modifications. The more bespoke the improvements, the smaller the pool of replacement tenants.

7 Practical Example: Modelling a NNN Investment

Take a standalone industrial warehouse in the western suburbs of Melbourne, leased to a national logistics company on these terms:

Purchase price: $2,400,000 (including acquisition costs)
Net lettable area: 800 sqm warehouse + 120 sqm office
Base rent: $144,000 per annum ($130/sqm net on total NLA)
Lease type: Triple net, tenant pays all outgoings
Lease term: 7 years remaining with a 5-year option
Rent reviews: 3.5% fixed annually
Tenant: ASX-listed logistics operator

Year	Net Rent (p.a.)	Net Yield	Cumulative Income
1	$144,000	6.00%	$144,000
2	$149,040	6.21%	$293,040
3	$154,256	6.43%	$447,296
4	$159,655	6.65%	$606,951
5	$165,243	6.89%	$772,194
6	$171,026	7.13%	$943,220
7	$177,012	7.38%	$1,120,232

Across the initial 7-year term the investor collects $1,120,232 in net income, a 46.7% return on the purchase price before financing costs and capital growth. Because the lease is triple net, there is nothing to deduct: gross rent equals net rent.

Now run the same property as a gross lease. Set the gross rent at $183,000 per annum, reflecting the landlord picking up $39,000 in annual outgoings, and the gross yield reads 7.63%, apparently higher. Outgoings do not hold still, though. Insurance and rates tend to climb faster than CPI, so budget 4% to 5% a year. In year one the landlord's true net income is $144,000, identical to the NNN scenario. By year seven, outgoings may have grown to $51,000 or more, while the gross rent on a 3.5% fixed review would be $231,500, leaving net income of roughly $180,500 against $177,012 on the NNN lease. The gross-lease investor is a little ahead late in the term, having taken on far more risk and management to get there.

8 Key Clauses to Review in a NNN Lease

Not all triple net leases are the same. Before you buy a property with an NNN lease in place, work through these clauses, ideally with your solicitor.

Outgoings definition. Confirm exactly which outgoings are included. Some leases described as "triple net" exclude land tax, capital works, or structural repairs. Read the outgoings schedule and check it against the categories listed in Section 1 above.
Outgoings cap. Some leases cap what the tenant pays, either a fixed dollar amount or a percentage increase year on year. Where a cap exists, the landlord wears the excess, and the lease is not truly triple net.
Make-good obligations. The lease should spell out the condition the tenant must return the premises to, the timeframe for completion, and the consequences of non-compliance. A vague make-good clause is almost as bad as none at all.
Assignment and subletting. Know whether the tenant can assign the lease or sublet without your consent, and whether an incoming party must meet set financial criteria. An assignment to a weaker tenant changes the risk profile of the whole investment.
Bank guarantee or security deposit. Check the amount and terms of the security held. A bank guarantee of 3 to 6 months' rent plus outgoings is standard for NNN leases. Make sure it is unconditional and does not expire before the lease term ends.
Insurance requirements. Confirm the tenant must maintain adequate building insurance, not just contents and public liability, and that the landlord is noted on the policy as an interested party. Ask for evidence of current cover each year.
Option terms. Where the lease carries renewal options, check whether the option rent is set at market or continues the existing review mechanism. A market review at option can reset the rent up or down, which moves your income forecast.

The lease document is your investment contract. Every dollar of return and every category of risk is defined within it. Never acquire a NNN property without a thorough review of the lease by a commercial property solicitor.

9 Is a Triple Net Lease Right for You?

Triple net leases are not automatically better than other structures. They suit a particular investor and a particular set of objectives.

NNN is ideal if you:

Prioritise passive income over hands-on management
Want a predictable, forecastable income stream with minimal variable costs
Are comfortable with single-tenant concentration risk
Have the patience to accept potentially lower headline yields in exchange for lower risk
Are investing through a structure (such as an SMSF or family trust) where simplicity and compliance are important

NNN may not suit you if:

You want to maximise yield and are willing to actively manage the property to achieve it
You prefer income diversification across multiple tenants
You are targeting value-add opportunities where re-leasing or repositioning is the strategy
The property is in a retail sector where the Retail Leases Act limits outgoings recovery, undermining the triple net structure

Whatever your strategy, knowing how a triple net lease actually works, how the outgoings transfer, how the yield comparison stacks up, and what each state's regulatory framework allows, puts you well ahead of most buyers weighing up a commercial property.