What it means
A building can have several tenants whose leases end at different times, and simply averaging their expiry dates would give a small lease the same influence as an anchor tenant, so WALE applies a weight to reflect the size or income importance of each lease. For rent-weighted WALE, multiply each lease's remaining years by its annual rent, add the products and divide by total annual rent included, so if two leases each pay $1 million annually and expire in six and two years the result is four years, and the as-of date should be stated.
Floor-area weighting replaces rent with occupied area, so a large low-rent tenant can carry more weight than in a rent-weighted measure, and the versions should not be compared without labels, with MarketBuddy's WALE calculator presenting both and illustrating why the name alone is incomplete. Use current lease records, not a marketing brochure, verifying expiry dates, rent, area and amendments from the underlying agreements, since a stale rent roll can shift the answer after a renewal or departure.
Decide how to treat vacancies: an empty unit has no active lease expiry and is often omitted from a lease-weighted denominator, but its risk still matters and should appear in a separate vacancy measure. Rent changes within a lease need a consistent weighting rule, because current annual rent and future scheduled rent are different bases, so state which one is used and whether turnover rent or service charges are included.
Break rights are load-bearing: a lease may state a final expiry in six years but let a tenant leave in two, and some reports use final expiry while others use first break, so show both when material. A break option may have conditions or notice deadlines, so do not assume it will be exercised, but do not hide it behind a long contractual expiry either, and a lease schedule should identify the option explicitly.
Rent-weighted WALE can fall when a large lease nears its end even if many small tenants renew, which signals concentration risk, so a single average should be supported by a lease-expiry profile and top-tenant list. A longer WALE can give a lender more confidence in the duration of contracted rent, but the tenant's credit and rent terms still matter, because a long lease with an unreliable payer is not the same as secure cash flow, and Re-Leased describes WALE as an investor risk measure, not a payment guarantee.
A short WALE can create leasing work and possible vacancy, but it may also let the owner reprice below-market leases or change the tenant mix, so whether it is positive depends on the market and strategy. Lease renewals may extend the average, but negotiation costs and incentives can change returns, so do not chase a longer WALE at any price but model rent, tenant quality and capital commitments together.
A portfolio figure can conceal property differences, since a single building with long leases may dominate a rent-weighted group WALE while another faces many near-term expiries, so review each property as well as the aggregate. The measure is useful for planning refinancing and renewal work, but a schedule of exact expiries is still needed to see whether several leases mature together because the average cannot show a cliff in one month.
WALE turns many lease dates into one time figure and earns its place on a dashboard when paired with break rights, tenant concentration, vacancy and rent quality.
In practice
Real-world examples.
Example
Two leases each pay $1 million annually; one expires in six years and the other in two. Rent-weighted WALE is four years.
Example
A tenant has a final expiry in six years but a break right after two. The owner reports expiry and break-adjusted views separately.
Example
A portfolio shows a five-year WALE, while one small building has several leases ending next year. Its property-level profile reveals the risk.
Formula
Calculation
Rent-weighted WALE = sum of each lease's annual rent x years to expiry / total included annual rent. For ($1 million x 6 + $1 million x 2) / $2 million, WALE is 4 years. Area-weighted WALE substitutes area consistently.
Worked example with three leases. Lease A pays $1.2 million with 8 years left, lease B pays $0.6 million with 3 years left and lease C pays $0.2 million with 1 year left. The weighted sum is ($1.2 million x 8) + ($0.6 million x 3) + ($0.2 million x 1) = 9.6 + 1.8 + 0.2 = 11.6, and total rent is $2.0 million, so WALE = 11.6 / 2.0 = 5.8 years.
A simple average of the three expiry periods would give (8 + 3 + 1) / 3 = 4 years, which understates the weight of the largest tenant.Case study
Seen in the real world.
This entirely fictional case follows Cedar Tower, an invented office owner considering refinancing. A headline WALE looked comfortable, but a key tenant had an earlier break option. The owner reported both dates and the lease-expiry profile to its advisers. No real financing outcome or increase in buyer interest is claimed.
Watch out
Common mistakes.
- Reporting final expiry while ignoring material tenant break options.
- Mixing rent-weighted and area-weighted figures without labels.
- Using a single average without reviewing concentrations and the expiry profile.
Questions
People also ask.
Is WALE always weighted by rent?
No. Some reports use floor area or another stated basis; always check the method.
Does a long WALE guarantee income?
No. Credit quality, payment, break rights and vacancy still matter.
How are vacant units treated?
They generally have no active lease expiry; report vacancy separately under the stated calculation.
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