House Price Uncertainty, Timing of Development, and Vacant Land Prices: Evidence for Real Options in Seattle

Summary

"House Price Uncertainty, Timing of Development, and Vacant Land Prices: Evidence for Real Options in Seattle" is a 2006 article by Christopher R. Cunningham, published in the Journal of Urban Economics, vol. 59, issue 1, pp. 1–31 (DOI: 10.1016/j.jue.2005.08.003). Cunningham, an urban/real-estate economist later a research economist at the Federal Reserve Bank of Atlanta, assembled a parcel-level dataset of vacant land characteristics and real-property transactions for the Seattle metropolitan area to test two predictions of real options theory applied to land markets: that greater uncertainty about future house prices should (1) raise the price of vacant land and (2) delay the timing of its development. The paper carries weight in the urban-economics literature as one of the clearest microdata tests of real-options theory in land markets — it is frequently cited alongside Titman's (1985) theoretical treatment of urban land prices under uncertainty as empirical confirmation that developers price and act on the option value of waiting.

The Core Argument and Findings

Real options theory treats an undeveloped parcel of land as analogous to a financial call option: the owner holds the right, but not the obligation, to "exercise" by building, and can instead wait for more information about future prices. Because development is costly and largely irreversible, greater uncertainty about the future payoff from development makes the option to wait more valuable, which should show up empirically as (a) a land price premium above the value implied by current use alone, and (b) a lower probability of development in any given period, holding current profitability constant.

Cunningham tests both predictions directly using Seattle parcel and transaction data, combined with a measure of house-price volatility/uncertainty constructed from the data. The paper's central, frequently cited quantitative results are:

• Uncertainty raises vacant land prices. A one-standard-deviation increase in house-price uncertainty is associated with a roughly 1.6 percent increase in vacant land prices, holding other parcel and market characteristics constant.
• Uncertainty delays development. The same one-standard-deviation increase in uncertainty is associated with an estimated 11 percent reduction in the probability that a given vacant parcel is developed in a given period.

Both results are consistent with the real-options prediction and inconsistent with a simple net-present-value model in which uncertainty (with no correlation to expected returns) should not affect the land-price/development-timing relationship on its own. [VERIFY: the precise regression specification, sample size/period, and statistical significance levels for these estimates — this session could not directly fetch the full paywalled text of the article, and the estimates above are drawn from the published abstract and multiple independent secondary citations that agree on the same "1.6 percent" and "11 percent" figures; a future editor with full-text access should confirm the underlying tables.]

Relation to the Georgist Case

Cunningham (2006) is not a study of land value taxation, Georgism, or any tax policy — it does not mention LVT and does not model a tax intervention. Its relevance to the Georgist case is indirect but structurally important: it is empirical, microdata confirmation of the mechanism that Georgist arguments about land speculation depend on. The paper establishes that:

1. Developers and landowners do, in practice, price and act on the option value of not developing — speculative waiting is a real, measurable phenomenon in an actual land market, not merely a theoretical possibility.
2. That option value rises with uncertainty and is capitalized into the price of vacant land itself, meaning part of the price of unimproved land reflects expected future appreciation and the right to wait, not just its value in current use.

Georgist arguments for land value taxation commonly assert that a recurring, annual tax on land value reduces the option value of holding land idle — because it converts the "free" wait into a costly one, shrinking (though not eliminating) the incentive represented by Cunningham's option-to-wait mechanism. Cunningham's paper is evidence for the mechanism a land value tax is designed to counteract, not evidence that a land value tax achieves that counteraction — the paper contains no tax variation and cannot speak to how large an LVT-induced reduction in speculative waiting would be. Readers should not read this paper as showing that LVT reduces speculation; it shows only that the speculative-waiting behaviour LVT proponents target is empirically real and non-trivial in magnitude (an 11 percent swing in development probability from one standard deviation of uncertainty).

Nuances and Limits

• Single metro area, one time period. The results are drawn from Seattle-area parcel data for a specific historical window; the magnitude of the option effect (1.6 percent price premium, 11 percent development-probability reduction) is local and time-bound, not a universal constant, and may not generalize to other markets, land types (e.g., agricultural vs. urban infill), or price-cycle regimes.
• Uncertainty, not taxation, is the treatment variable. The paper's identification strategy varies house-price uncertainty, not any tax rate. Any inference about how an LVT would change these results is an extrapolation from theory (a holding-cost tax should reduce the net value of waiting), not something the paper tests.
• Real options theory predicts a direction, not a policy-relevant magnitude. Even taking the paper's estimates at face value, translating "uncertainty raises the option value of waiting by X" into "an LVT of rate Y would reduce speculative withholding by Z" requires additional modeling assumptions the paper does not supply.
• Full-text verification gap. This session accessed the paper's abstract and its findings as reported consistently across multiple independent secondary sources and citing literature, but could not directly fetch the paywalled ScienceDirect full text; exact sample size, regression specification, and standard errors are not independently confirmed here. [CITATION NEEDED: primary-text confirmation of the full regression tables and sample description.]

Bears On

• Outcome: Land value taxation dampens land speculation — Cunningham provides empirical confirmation of the underlying speculative-holding mechanism (option value of waiting rises with uncertainty and is priced into vacant land) that an LVT is theorized to blunt by taxing land value annually regardless of use; it does not itself test or measure an LVT's effect.
• Concept: Speculative Vacancy — the paper's finding that developers rationally delay development to preserve option value is a formal, priced version of the same withholding behaviour discussed on that page.
• Concept: 18-Year Land Cycle — uncertainty-driven option value and delayed development are consistent with (though not a direct test of) the speculative dynamics described in land-cycle accounts.

See Also

• Land value taxation dampens land speculation
• Speculative Vacancy
• 18-Year Land Cycle
• Land Value Tax

Sources

1. Christopher R. Cunningham (2006), "House Price Uncertainty, Timing of Development, and Vacant Land Prices: Evidence for Real Options in Seattle," Journal of Urban Economics, 59(1), pp. 1–31. DOI: 10.1016/j.jue.2005.08.003 — used for the paper's authorship, venue, and headline empirical findings (1.6% price effect, 11% development-probability effect), drawn from the published abstract and corroborating secondary citations; full paywalled text not directly fetchable in this session.

[CITATION NEEDED: direct access to the full paywalled text (regression tables, sample construction, exact estimation period) — this session verified the paper's existence, citation, and headline findings via the ScienceDirect abstract listing and multiple independent secondary sources that agree on the same figures, but could not fetch the full article text through the available web access.]