Product-method explanation as at 12 August 2026; a citation exposes the basis of a conclusion but does not remove the need to assess applicability and professional judgement.
A source-linked planning answer should expose more than a footnote. It should retain the question, parcel and proposal assumptions, the applicable source and version, the exact evidence used, the reasoning step, and the qualification on the resulting conclusion.
Direct answer
Plynth's direct-answer stream emits claim-to-citation anchors and, when a citation has a resolvable source kind, a source-viewer reference rather than relying only on a generic reference list. A claim is useful only when a reader can inspect which source supports it, why that source applies to the land and question, and where judgement or uncertainty remains.
The Environmental Planning and Assessment Act 1979 provides the statutory planning framework, while current instruments and the Planning Portal Spatial Viewer provide provision and spatial evidence. Each source still needs an applicability test.
Answer-to-source provenance chain
A Plynth-authored chain showing what must remain inspectable between a question and a qualified planning conclusion.
| Node | Recorded object | Verification question | Failure state |
|---|---|---|---|
| 1. Question | User wording and requested date | What exactly is being asked? | Ambiguous question |
| 2. Land | Lot/DP, boundary and jurisdiction | Is this the correct parcel? | Parcel unresolved |
| 3. Proposal | Use, works, dimensions and assumptions | What development is being tested? | Characterisation unresolved |
| 4. Source | Instrument/dataset ID, version and publisher | Is it current and applicable? | Source unavailable or uncertain |
| 5. Evidence | Clause, map value, definition or dataset row | Does it support this material claim? | Evidence missing or indirect |
| 6. Reasoning | Calculation, applicability test or assessment step | Can another reader reproduce it? | Unsupported inference |
| 7. Conclusion | Result plus objective/merit classification | What is known, conditional or unresolved? | False certainty |
| 8. Citation | Direct path back to source evidence | Can the user inspect the basis? | Broken or generic citation |
Citation is necessary but not sufficient
A source can be authentic yet irrelevant to the parcel, proposal or date. A map can be current yet misread at a boundary. A provision can be quoted accurately while its definition, exception or transition is omitted. Provenance therefore includes applicability and reasoning, not only URL storage.
Claim-level evidence
Material claims should identify the source object they depend on. Examples include a zone, mapped value, land-use-table entry, numeric standard, definition or dated dataset observation. General background can cite a broader official guide, but that guide should not be used to prove a more specific legal result than it contains.
Exceptions and failure modes
- A source link can continue to resolve after its relevant provision changes.
- A citation to a whole instrument can be too broad to support a clause-level claim.
- An image or highlight cannot be the only accessible form of the evidence.
- Multiple sources can jointly qualify a result and should not be collapsed to a single citation.
- Professional review remains necessary for questions involving legal meaning, design judgement or consent-authority discretion.
Next questions
Review the source-currency method for how changes propagate to dependent pages, then inspect the decision matrix separating objective checks from mapped and professional-assessment questions. The NSW planning case-law search workflow applies the same claim-to-source discipline to a bounded judgment trace.