Search "how to calculate WALE" and you get calculators, glossary definitions, and lender explainers. Useful. Incomplete for buyers. A single number on a flyer is not a Deal Grade. It does not tell you which tenant is carrying the income, whether options are real, or how vacancy hits your cash if the short lease walks.
This piece is the buyer read. Gross lease vs net lease grades who pays outgoings. What does a commercial buyers agent do covers the job. Here I show how to calculate WALE the way I use it inside The Deal Grade™ income score, before anyone argues about the facade.
What WALE actually measures
WALE means Weighted Average Lease Expiry. The short definition also lives in the glossary. In Australia it is the average remaining lease term across the tenancies in a property, weighted by income or by floor area. Valuers and lenders quote it in years. It answers one question: of the rent (or space) that is spoken for today, how long does that commitment last on average.
It does not answer covenant strength. It does not answer whether the rent is above or below market. It does not answer make-good, capex, or outgoings recovery. Those sit beside WALE in the income grade, not inside it.
A short WALE on a strong covenant with clear options is a different risk stack from a long WALE on a soft tenant. The number alone is not the deal.
Income-weighted vs area-weighted
There are two common weightings. They answer different questions. Do not mix them in one sentence.
Income-weighted WALE (the one buyers and valuers usually mean). For each tenancy, multiply remaining term by that tenancy's share of total passing rent. Sum across tenancies. This asks: of the dollars of rent flowing through this asset, what is the average remaining term.
Area-weighted WALE. Same maths using floor area (NLA or GLAR depending on the asset) instead of rent. This asks: of the floor that is leased, how long is it spoken for on average. Useful when rents per square metre diverge, or when you are thinking repositioning and physical rollover, not cash flow alone.
If rent per square metre is uneven, the two numbers diverge. A small high-rent suite on a short lease can drag income-weighted WALE down while area-weighted still looks fine. Always ask which weighting is on the flyer.
The calculation, step by step
Use remaining term from today to expiry, not the original lease length. Exclude unexercised options from the base number. Options are tenant discretion, not landlord certainty, unless you are building a separate probability-weighted view.
Worked example (income-weighted):
| Tenant | Annual rent | Years left |
|---|---|---|
| A | $120,000 | 6 |
| B | $48,000 | 2 |
| C | $72,000 | 4 |
| D | $60,000 | 5 |
| Total | $300,000 |
Weighted sum = (120,000 × 6) + (48,000 × 2) + (72,000 × 4) + (60,000 × 5) = $1,404,000
Income-weighted WALE = 1,404,000 ÷ 300,000 = 4.68 years
That is the flyer number. Now grade it.
Tenant B is only 16% of rent but expires in two years. If B is the soft covenant, your cash risk arrives earlier than "4.68 years" sounds. If A is 40% of rent on six years with a listed covenant, the income spine is stronger than a flat average suggests. Concentration and covenant sit next to WALE, not inside it.
For multi-tenant assets I also check top-three income share and the nearest expiry that moves more than about 20% of rent. A clean WALE with a cliff next year is not clean.
How WALE sits inside Deal Grade
On every commercial deal I run The Deal Grade™: a letter A to C on the building, a number 1 to 3 on the income. WALE sits inside the income grade with covenant strength, outgoings recovery, escalations, and vacancy exposure.
A Building Grade A shed on a 1.5-year WALE to a local covenant is a different buy-zone conversation from a Building Grade B shed on a 6-year WALE to a national tenant on a clean net lease. The letter and the number move together. I do not capitalise brochure rent until income quality is graded.
Commercial vs residential property investment already flags that commercial yields are usually quoted closer to cash after recovered outgoings. WALE is the time dimension of that income story. Short WALE means you should stress a vacancy year and a re-leasing cost before you set offer price.
I have bought and sold commercial as an own project (including the Dry Creek warehouse on results). The lesson that survives is the same: grade remaining term and who pays the rent before you romance the building.
Flyer traps buyers miss
Options counted as firm term. Marketing packs sometimes stretch WALE by treating renewal options as committed years. Ask for WALE to firm expiry only, then discuss options separately.
Vacancy ignored or massaged. Some reports exclude vacant space so WALE looks longer. Others include vacancy as zero term so WALE looks shorter. Ask which method was used and rebuild both.
Single-tenant quoted like a portfolio. On a single lease, "WALE" is just years left. Useful. Do not let the jargon hide a simple expiry date.
WALE without covenant. A long average carried by one weak tenant is not durable income. Read the rent roll names, guarantor position, and arrears history beside the number.
WALE without outgoings. A long net lease with unrecovered cost risk still fails the cash test. Rebuild net income the way gross lease vs net lease sets out before you capitalise anything.
What to demand in the pack before you trust the number
Before you argue price, ask for:
- The current rent roll with commencement, expiry, options, and passing rent per tenancy.
- Which WALE method was used (income or area) and whether vacancy was included.
- Firm-expiry WALE with options listed separately.
- Top-three tenant income concentration.
- Any known rent reviews, incentives, and make-good timing near expiry.
- Outgoings budget and recovery schedule so net income matches the yield story.
If the selling agent cannot produce a rent roll that rebuilds the quoted WALE, treat the number as provisional. Price the risk or walk. Formal legal review stays with your solicitor. My job is to make sure the commercial question is asked before emotional capital is spent on the tour.
How this sits in a commercial brief
If you are graduating from residential, start with capital, income need, and risk posture on the Commercial Ready Check. Then ask whether the next asset's income survives the next expiry, not only the next rates notice.
Fee structure and process for commercial representation sit on the commercial page and in the commercial buyers-agent insight linked above. Site CTA is Book a strategy call. Bring the rent roll if you have one. If you do not, that is the first diligence gap we close.
Frequently asked questions
How do you calculate WALE?
Multiply each tenancy's remaining lease term by its rent (or area), sum those products, then divide by total rent (or total area). Use remaining term to firm expiry. State whether you weighted by income or by area.
What is a good WALE for commercial property?
It depends on asset type, covenant, and your hold period. Longer is usually more defensive for income buyers, but a moderate WALE on a strong covenant can beat a long WALE on a soft one. Grade the rent roll, not the slogan.
Does WALE include lease options?
Base WALE should use firm expiry only. Options are tenant rights. Report them separately or as a probability-weighted view if your brief needs that, but do not let option years inflate the headline without a label.
Is WALE the same as WALT or WAULT?
Same idea, different labels by market. Australia and New Zealand usually say WALE. The US often says WALT. Europe often says WAULT. Always confirm the weighting method and whether vacancy is included.
Why does my domain glossary already define WALE?
A glossary stub answers "what does WALE mean". This piece answers how buyers should calculate it, stress it, and fold it into offer price. Use both. Do not treat the stub as a substitute for a rent-roll rebuild.
*General information only. Not personal financial advice. Lease terms, valuation practice, and lender treatment of WALE vary by asset, state, and deal. Property outcomes depend on your brief, capital, timing, and the asset. Get advice specific to your situation before acting. Individual results vary.*
