Resources · Glossary
What is WALT?
WALT, or WALE, is the weighted average lease term (or expiry): the average remaining lease term across a property, weighted by rent or area. It shows how secure a property's income is.
| Term | Area |
|---|---|
| WALT / WALE | Performance metrics |
| Commercial lease administration | Modules |
| Dashboards & reports | Modules |
How do you calculate WALT?
For each lease, multiply its remaining term by its weight, usually annual rent (income-weighted) or leased area (area-weighted). Add the results and divide by the total weight: WALT = Σ (remaining term × weight) ÷ Σ weight.
WALT is a key input in commercial property valuation and lending. A longer WALT suggests more secure income, while a short WALT signals upcoming leasing risk. Reports should state the weighting basis and the "as of" date, and how break options are treated.
See also: Commercial lease administration and Dashboards & reports.

What does a WALT calculation look like?
Example (illustrative figures). Lease A: $300,000 a year with 6 years left. Lease B: $100,000 a year with 2 years left. Income-weighted WALT = (300,000 × 6 + 100,000 × 2) ÷ 400,000 = 5.0 years.

What is the difference between WALT and WALE?
They mean the same thing. WALT (weighted average lease term) is common in Europe and the UK, while WALE (weighted average lease expiry) is widely used in Australia and parts of Asia. Both measure the average time left on leases, weighted by income or area.
Should WALT use rent or area?
Income-weighted WALT reflects income security and is preferred by investors and lenders. Area-weighted WALT reflects how much space is committed. Many reports show both, clearly labelled, because a large low-rent tenant can skew one but not the other. Comparing figures across portfolios only makes sense when they use the same weighting.
How do break clauses affect WALT?
A lease with a tenant break option may end earlier than its stated expiry. Many reports calculate WALT both to expiry and to first break, so readers can see the downside case. The basis used should always be stated. Investors often treat WALT to first break as the more conservative figure.
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