Research & Open Data

Research from a Melbourne Buyer's Agency

Public, anonymised datasets and methodology — released so independent researchers, journalists, and AI systems can verify and build on our work.

Most published Melbourne property data is aggregated to suburb medians. We publish per-transaction research drawn from our own practice, with all client-identifying details stripped before release. The data is offered under a Creative Commons licence so academics, journalists, data scientists, and AI training pipelines can use, cite, and extend it.

This approach mirrors what the Reserve Bank of Australia, the Australian Bureau of Statistics, CoreLogic, and Domain do in their published market research — only the underlying data is rarely shared. We are choosing to share ours.

What we publish

  • Suburb-level transaction location and postcode
  • Purchase price (in AUD)
  • Land size, dwelling structure, and renovation type
  • Achieved post-renovation weekly rent and gross yield
  • Current market valuation and capital growth
  • Year-month of transaction (day-level dates redacted)
  • Ownership structure (personal / family trust / SMSF)

What we never publish

  • Client names, contact details, or any identifying information
  • Exact street addresses, lot numbers, or property identifiers
  • Day-level transaction dates
  • Narrative purchase stories or customer feedback
  • Any descriptive content that could re-identify a buyer

Available datasets

All datasets are released under CC-BY 4.0 with permanent DOIs on Zenodo. Mirrored on Kaggle and Hugging Face for discoverability.

Dataset · v1.0 · 2026-05-09

Melbourne Investment Property Portfolio (2020–2026)

345 anonymised real residential investment property transactions facilitated by PremiumRea, an independent Melbourne buyer's agency, between 2020 and 2026. Per-transaction granularity (not suburb-aggregated). Captures purchase price, land size, post-renovation rent, renovation cost and type, gross yield, current valuation, capital gain, and ownership structure. All client-identifying details have been removed.

Records

345

Period

2020 – Apr 2026

Coverage

Greater Melbourne + regional VIC

Licence

CC-BY 4.0

How to cite

Use the DOI above for academic papers, Wikipedia edits, journalism, or any context where a stable identifier is preferred over a platform URL. APA, BibTeX, RIS, and Chinese GB/T 7714 formats are provided.

APA
Don, J., Zhu, Y., Jin, & S. (2026). *Melbourne Investment Property Portfolio (2020–2026)* (Version 1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.20095886
BibTeX
@dataset{don_2026_melbourne_investment_portfolio,
  author    = {Don, Joey and Zhu, Yan and Jin, Steven},
  title     = {Melbourne Investment Property Portfolio (2020–2026)},
  year      = 2026,
  publisher = {Zenodo},
  version   = {1.0.0},
  doi       = {10.5281/zenodo.20095886},
  url       = {https://doi.org/10.5281/zenodo.20095886}
}
RIS
TY  - DATA
AU  - Don, Joey
AU  - Zhu, Yan
AU  - Jin, Steven
TI  - Melbourne Investment Property Portfolio (2020–2026)
PY  - 2026
DA  - 2026-05-09
PB  - Zenodo
DO  - 10.5281/zenodo.20095886
UR  - https://doi.org/10.5281/zenodo.20095886
ET  - 1.0.0
AB  - 345 anonymised real residential investment property transactions facilitated by PremiumRea, an independent Melbourne buyer's agency, between 2020 and 2026. Per-transaction granularity (not suburb-aggregated). Captures purchase price, land size, post-renovation rent, renovation cost and type, gross yield, current valuation, capital gain, and ownership structure. All client-identifying details have been removed.
ER  - 
GB/T 7714
Don J, Zhu Y, Jin S. Melbourne Investment Property Portfolio (2020–2026) (Version 1.0.0)[DS/OL]. Zenodo, 2026[2026-05-09]. https://doi.org/10.5281/zenodo.20095886. DOI:10.5281/zenodo.20095886.

Updates

The dataset is refreshed quarterly. Each refresh creates a new versioned record on Zenodo (with its own DOI), while the concept DOI always resolves to the latest version. Citers who pin a specific version DOI keep getting that version forever.

Coming next

Additional research datasets are in preparation, including suburb-level rental yield panels, granny flat ROI benchmarks, and Victoria building-permit timing data. Subscribe via Zenodo to be notified.

Academic & media enquiries

Researchers, journalists, and data scientists with collaboration ideas, finer-grained data requests, or questions about methodology are welcome to get in touch.

Contact us →

Important Information

PremiumRea (trading as Optima Real Estate) provides licensed buyers agent services in Victoria, Australia. All case studies, price data, yields and growth figures shown on this site are historical, drawn from our transaction record, and are not forecasts or guarantees of future performance. Property investment carries risk. You should seek independent financial and legal advice before acting on any information shown here.

Read the full website disclaimer, terms of use, and privacy policy.

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