Summary
Karl Fitzgerald is the principal researcher at Prosper Australia (Melbourne), the leading Australian organization advocating for land value taxation. His signature research contribution is the Melbourne Vacancy Rate Study — using electricity meter readings (zero or near-zero consumption) to measure the actual rate of speculative vacancy in Melbourne’s residential property market. His findings suggest significantly more vacant dwellings than official data shows, consistent with land-banking behavior by investors. He has collaborated with Fred Harrison and the international Georgist network.
Key Contributions
- Melbourne Vacancy Rate Study: Prosper Australia’s landmark research using energy consumption data as a proxy for true residential vacancy. Found substantial speculative vacancy, supporting the Georgist diagnosis of land withheld from productive use.
- Earthsharing Australia (radio show): Long-running Renegade Economists Show on 3CR Melbourne — Karl and co-host Karl Fitzgerald (and Steve Keen at times) have featured Harrison, Anderson, Foldvary, and other cycle researchers.
- Prosper Australia LVT advocacy: Primary Australian voice for land value tax reform
Relationship to PSE
- Akhil Patel has appeared at Prosper Australia events
- Phil Anderson (PSE) is Australian — the Prosper Australia network is part of the broader Australian land-cycle/Georgist community
- Prosper Australia was planning to tour Fred Harrison in 2008 (per Earthsharing archive)
Cross-References
- speculative-vacancy — his signature research contribution
- property-tax-as-cycle-stabilizer — his primary policy advocacy
- fred-harrison — collaborated in Georgist network
- 2026-05-03-earthsharing-harrison-archive — Prosper Australia/Earthsharing archive
Phase 2 source material: Earthsharing archive (stub content); speculative vacancy research known from secondary sources.