Weighted average lease term — WALT — is a portfolio risk metric that measures the average remaining time until lease expiration across a multi-tenant property or an entire portfolio. A property with a 7-year WALT has, on average, seven years of contracted rent remaining before the leases roll. WALT is a single number that captures the near-term cash flow visibility of a property: high WALT means predictable income, low WALT means imminent leasing activity and the risks that come with it. Institutional investors, lenders, and asset managers all watch WALT as a core portfolio health indicator.
Two calculation methods are in common use. Rent-weighted WALT weights each lease's remaining term by the rent it generates, so large-rent tenants carry more weight in the average than small-rent tenants. Area-weighted WALT weights by leased square footage, treating each square foot of occupied space equally regardless of rent. Rent-weighted WALT is more relevant for income stability analysis because it reflects the economic weight of each tenant; area-weighted WALT is simpler to calculate and provides a rough risk picture. Sophisticated portfolio reports often show both, because the two can diverge meaningfully when a property has a mix of high-rent anchor tenants and lower-rent in-line tenants with different remaining terms.
Interpretation depends on strategy. Core institutional funds target long WALTs (often 7-10+ years) because the investment thesis rests on stable, bond-like cash flows and minimal near-term leasing risk. Value-add funds typically operate with shorter WALTs (3-5 years) because their returns depend on resetting below-market leases at higher rents, which requires the existing leases to roll during the hold period. Opportunistic funds may deliberately seek properties with very short WALTs because those assets trade at a discount — the discount reflects the uncertainty, and the manager's edge comes from executing successful lease-up post-acquisition. A property's WALT is not good or bad in isolation; it is good or bad relative to the strategy and the market.
WALT also affects financing. Lenders prefer longer WALTs because loan covenants tied to coverage ratios are less exposed to near-term cash flow disruption. CMBS underwriting typically requires a specified minimum WALT at origination, and some loan structures include 'trigger' provisions that redirect cash flow to reserves if WALT falls below a threshold during the loan term. A property approaching loan maturity with a WALT shorter than the remaining loan term is a refinancing risk — the lender sees more leases expiring than principal being paid down, which signals potential income volatility right when the borrower is trying to refinance. Sophisticated borrowers track WALT alongside refinance timing and structure hold-sell decisions partly around maintaining adequate WALT for their financing strategy.
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