Understanding WAULT: Why Lease Length Drives Commercial Value
WAULT quietly drives commercial property pricing more than almost any other single metric. Here is what it measures and why lenders and valuers care so much about it.
Ventura Research · 6 min read · Updated 10/07/2026
Key Takeaways
- WAULT (Weighted Average Unexpired Lease Term) measures the average remaining lease length across a property or portfolio, weighted by rental income.
- Longer WAULT generally supports a lower yield (higher price) because income is more secure for longer.
- WAULT is usually quoted two ways: to lease expiry, and to the earliest tenant break option — the second is normally the more conservative and more relevant figure.
How WAULT Is Calculated
Each lease’s remaining term is weighted by the proportion of total rent it contributes, then summed. A building with two units — one contributing 70% of rent with 8 years remaining, one contributing 30% with 2 years remaining — has a WAULT of (0.7 x 8) + (0.3 x 2) = 6.2 years.
Why It Drives Pricing
Income security is the core of commercial property valuation. A long WAULT to a strong covenant is the closest thing commercial property has to a bond-like income stream, and is priced accordingly — often at a meaningfully lower yield than an equivalent asset with a short WAULT, even with an identical tenant.
WAULT to Break vs. WAULT to Expiry
Many UK commercial leases include tenant-only break options. WAULT to expiry ignores these; WAULT to break assumes the tenant exercises the earliest available break. Lenders and cautious buyers typically underwrite to the break figure, since a tenant is more likely to exercise a break in a downturn — precisely when refinancing or re-letting is hardest.
Common Mistakes
- Quoting WAULT to expiry without disclosing a materially shorter WAULT to break.
- Treating WAULT as a guarantee of income rather than a probability-weighted assumption — tenants can still default within the lease term.
- Ignoring lease structure entirely when comparing two properties with superficially similar WAULT figures but very different break clause risk.
Professional Insight
When we present an opportunity with WAULT, we always show both figures — to expiry and to break — because the gap between them is itself information. A large gap (long lease, near-term break) usually means the market is under-pricing near-term vacancy risk, which can be an opportunity or a trap depending on the tenant’s trading performance.
Frequently Asked Questions
What is considered a "long" WAULT in the UK market?
This varies by sector, but as a rough guide: 10+ years is considered long and bond-like (common in supermarkets, care homes); 5-10 years is a solid institutional hold; under 5 years is typically priced as a shorter-term or asset-management opportunity.
Does WAULT apply to residential property?
Rarely — most UK residential tenancies are short (6-12 month ASTs), so WAULT is a commercial and, to a lesser extent, PBSA/BTR concept rather than a standard residential metric.
Related Tools
Further Reading
Sources
- RICS Code for Leasing Business Premises
- Ventura Research analysis of UK institutional commercial transactions
Reviewed by Ventura Investment Committee · v1.1 · First published 18/04/2026
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