Climate Risk8 min read

Climate Risk in Real Estate Valuation

By Jonas Adam Mohamed Osman, known as Yonas Osman

CEO of Quantica Risk

60 Rue François Ier, 75008 Paris, France

Published 15 October 2026

Climate hazards are starting to show up as measurable discounts in real estate valuation, challenging appraisal methods that rely on recent comparable sales.

Executive answer

Traditional real estate valuation leans heavily on recent comparable sales, which works poorly for capturing climate risk because markets tend to reprice property only after a damaging event occurs or hazard information becomes salient to buyers, not in gradual anticipation of future risk. This creates a lag where properties in increasingly hazardous locations can appear fairly valued by comparable-sales methods right up until a flood, wildfire or storm event triggers a sudden repricing.

Forward-looking valuation approaches that incorporate hazard data directly, rather than relying solely on historical transaction evidence, are beginning to emerge, and lenders, insurers, and institutional real estate investors have strong incentives to adopt them given the balance sheet exposure involved in overvalued climate-exposed collateral.

Why comparable-sales methods lag

Comparable-sales valuation assumes that recent transaction prices reflect all relevant information about a property's risk and value, but climate hazard information is often not yet priced into buyer behaviour, particularly where insurance premiums have not yet risen to reflect true risk or where buyers underestimate low-frequency, high-severity event probability. This information lag means comparable-sales valuations in hazard-exposed areas can embed a false sense of stability.

Once a damaging event does occur, or once insurance becomes unavailable or prohibitively expensive, repricing can happen abruptly rather than gradually, creating valuation cliff-edge risk for lenders and investors holding collateral that had appeared stable under standard appraisal methods just before the event.

Incorporating hazard data into appraisal

Forward-looking valuation methods incorporate explicit hazard scores, insurance cost trends, and in some cases scenario-based discounted cash flow adjustments that reflect expected changes in operating costs, insurance availability and rental demand under different climate pathways. For commercial real estate, this can mean explicitly modelling how rising insurance costs or increased capital expenditure for resilience measures affect net operating income over a holding period.

Appraisal and valuation professional bodies have begun issuing guidance encouraging valuers to consider climate risk as a distinct factor rather than leaving it implicit in comparable-sales adjustments, though adoption varies significantly by jurisdiction and property type, with institutional-grade commercial assets generally ahead of residential markets.

Implications for lenders and investors

Lenders relying on appraised values that do not reflect forward-looking climate risk may be understating loan-to-value ratios on exposed collateral, which has direct implications for provisioning adequacy and capital calculations under prudential frameworks. Institutional real estate investors face a parallel issue in portfolio valuation, where climate-blind valuations can overstate net asset value relative to true risk-adjusted worth.

Real estate investment trusts and institutional funds are increasingly disclosing physical risk exposure across their portfolios in response to investor demand and, in some jurisdictions, mandatory climate-related financial disclosure requirements, which creates pressure to align internal valuation practices with the hazard data being disclosed externally.

Conclusion

Real estate valuation is at an inflection point where forward-looking climate hazard data needs to move from a disclosure add-on to a core input in appraisal methodology, particularly for assets with long holding periods or significant lending exposure. Markets that continue to rely purely on comparable sales risk sudden, disorderly repricing as climate events accumulate.

Yonas Osman, CEO of Quantica Risk, encourages lenders and investors to treat hazard-adjusted valuation as a risk management tool in its own right, not merely a disclosure exercise, given how material the gap between comparable-sales values and forward-looking risk-adjusted values can become.

Primary sources

real estatevaluationphysical riskproperty