Value Switching: Extracting Profit from the City (Troy, Randolph & Pinnegar, 2025)

Summary

"Value switching: Extracting profit from the city," by Laurence Troy, Bill Randolph, and Simon Pinnegar (UNSW City Futures Research Centre), appeared in Environment and Planning F, 2025, as part of a special issue on "Value Theory in the Country and the City." It proposes "value switching" to explain a specific empirical pattern in Sydney real estate: developer and investor profit tracks capital appreciation triggered by planning decisions far more than it tracks rental yield — and argues classical land-rent theory, while not wrong, is insufficient on its own to explain this.

Four Regimes of Value

The paper identifies four intersecting "regimes" land can occupy: land as rent (capitalized rental income — the classical, Ricardian/Georgist reading); land as commodity (tradable exchange value); land as financial asset (valued by yield/return independent of use, subject to leverage and finance-sector logic); and land as fictitious capital (valuation based on an as-yet-unrealized future claim on profits). "Value switching" is the moment a parcel moves from one regime to another — most dramatically, when a planning or rezoning decision converts industrial or low-density land into high-density approved residential land — capturing a large, one-time value uplift independent of any construction or productive activity.

Sydney Case Evidence

The paper's empirical core is a set of striking individual transactions plus a large-sample statistical test, both drawn from NSW Valuer General historical sale records:

• Randwick: a former horse-stabling site, most of it acquired pre-1990 at negligible cost, sold for A$290 million in 2015 — one month after a rezoning approval for 750 dwellings. Crude profit: roughly A$284 million.
• Erskineville (Ashmore Estate): industrial land bought for ~A$83 million in 2011; the northern lot sold for A$260 million in 2016 and the southern lot for A$120 million in 2017 — a combined A$380 million, roughly A$300 million profit, a 360% return over seven years, triggered by a City of Sydney precinct rezoning.
• Lewisham: an industrial site bought for A$8.5 million in 2005, sold in 2012 — with outline development approval but before any physical change to the site — for A$48.5 million, a 471% increase.
• Statistical analysis: 3,980 non-strata Sydney sales (2001–2019, land over A$3 million), matched into 1,990 repeat-sale pairs, plotted against distance to Sydney's 202 train/metro stations. Annualized profit margins for properties within 800m of a station rose sharply after 2011 — coinciding with a NSW policy shift toward transit-oriented development — peaking at roughly 350% annualized uplift by 2015, far above the more subdued, stable pattern outside station buffers.

Relation to the Georgist Case

The authors are explicit that value switching is not offered as a refutation of rent theory: "the 'rent' and 'value' gap notions are not incompatible, but neither are they the same." The honest framing is that this is a genuine extension, not a rejection, of rent theory for a specific case — speculative, planning-triggered land trading — where profit tracks anticipated future rent capitalized instantly by a zoning decision rather than actual rental income received over time. A Georgist reading of the same data would treat all four "regimes" as different accounting frames on the same underlying phenomenon: unearned land value created by a public/collective decision (rezoning), captured entirely privately — precisely the mechanism land value capture instruments target, and precisely the case the wiki's unearned increment framing already covers. The paper's own data — one-month, no-construction, hundreds-of-percent gains triggered purely by a rezoning stroke of a pen — is some of the starkest evidence on the wiki for why LVC instruments matter.

Nuances and Limits

• Sydney-specific, high-value-parcel sample. The statistical analysis covers land sales over A$3 million; findings about the intensity of planning-triggered value switching may not generalize to smaller residential parcels or other cities' planning systems.
• A theoretical framework paper with case-study and statistical illustration, not a causal-identification study in the econometric sense — the station-proximity analysis is descriptive/correlational.
• Full text read directly (A-claim). The complete article was obtained via UNSW's institutional repository and read in full.

Bears On

• Concept: Land Value Capture — vivid, concrete evidence for exactly the mechanism LVC instruments (betterment levies, TIF, value-capture charges) are designed to capture.
• Concept: Unearned Increment — some of the starkest documented cases on the wiki of publicly-created, privately-captured value: hundred-million-dollar gains triggered by a rezoning decision alone.
• Concept: Residual Land Valuation — the mechanism by which a zoning change instantly recalculates a site's residual (development-potential) value.

See Also

• Land Value Capture
• Unearned Increment
• Residual Land Valuation
• Betterment Levy

Sources

1. Laurence Troy, Bill Randolph & Simon Pinnegar (2025), "Value switching: Extracting profit from the city," Environment and Planning F 4(3): 392–408 (special issue "Value Theory in the Country and the City," eds. Adam Morton & Dallas Rogers), DOI 10.1177/26349825241269224. Funded by Australian Research Council DP190102762. journals.sagepub.com — full text read directly 2026-08-31 (via UNSW's institutional repository, unsworks.unsw.edu.au, after direct/proxy publisher access was blocked) — used for the four-regime "value switching" framework, the Randwick/Erskineville/Lewisham transaction data, the station-proximity statistical analysis, and the authors' own qualification that value switching complements rather than refutes rent theory (A-claim; full text).