Watch the video, then use the checklist below to structure your own desktop research.
Maximising the long-term value of residential real estate requires shifting away from emotional speculation and focusing on data-driven yield. One powerful approach is the secondary dwelling strategy: treating existing structures and new outdoor buildings as income-generating assets that can help carry the underlying land.
By creating two rental incomes from one parcel of land, a property can become more resilient through tight borrowing conditions or flat market cycles. The numbers still need to work, and that starts with disciplined research before engaging professionals.
The digital property research stack
Use a desktop workflow to filter potential properties, assess construction feasibility and understand demographic risks before you spend money on detailed reports.
| Phase | What to assess | Useful resource |
|---|---|---|
| Sourcing and filtering | Look for older, structurally sound homes on land with enough area for a viable building envelope (for example, 500 m² or more, subject to local rules). | Realestate.com.au |
| Logistical assessment | Check driveway width, access for machinery, street layout and whether nearby blocks have successfully added secondary dwellings. | Google Maps |
| Zoning verification | Confirm the zoning and overlays. Lower-density residential profiles may be more suitable than sites competing with high-density development. | PropCode |
| Automated pre-screening | Use AI to extract block dimensions, site clues and questions from listing details. Treat the output as a starting point, not professional advice. | ChatGPT |
| Demographic analysis | Review local tenure and household data to understand the private rental market in the exact pocket you are considering. | id Community |
| Feasibility modelling | Model purchase price, construction, duties, finance, management, vacancy and other costs to estimate net yield and weekly cash flow. | Claude |
| Valuation and equity | Check transaction history and comparable sales so your offer reflects evidence rather than optimism. | CoreLogic RP Data |
Due diligence and structural red flags
Once the desktop numbers look promising, have the contract and property records checked before making an offer.
Statutory planning certificates
Each state uses different property disclosure documents. Review the relevant certificate or vendor statement to confirm that a secondary dwelling is legally possible and to identify restrictions such as biodiversity controls, landslip, road widening, heritage or acid sulfate soil overlays.
- New South Wales: Section 10.7 Planning Certificate
- Victoria: Section 32 Vendor Statement
- Queensland: Planning and Development Certificate
- South Australia: Form 1 Vendor Statement
- Tasmania: Section 337 Council Land Information Certificate
Sewer diagrams and easements
Request the service layout and locate sewer mains, easements and other infrastructure. Building over or close to a council sewer can require engineering, encasement and access provisions that materially change the budget.
When to hand off to specialists
If the property passes your desktop screen and contract review, take the layout and research to licensed professionals:
- Conveyancing solicitor: validates contract terms and legal clauses.
- Building certifier: advises whether a complying pathway or standard development application is appropriate.
- Land surveyor: maps boundaries, levels and stormwater flows for the design team.