Evidence and sources
The site gives priority to official and primary sources. A source can establish what a rule says or what a technical principle is; it does not automatically prove that LPP 3.27 is necessary or unnecessary. Those are separate policy judgments.
How claims are labelled
- Established fact: supported by an identified source.
- Published information not identified: a limited statement about the consultation material examined, not a claim about work the Town may have undertaken internally.
- Analysis: an interpretation or question arising from the evidence.
Core sources
Town consultation page — Town of Cambridge, 2026.
Official overview, scope, minimum requirements, points framework, submission routes and closing time.
Draft Local Planning Policy 3.27 — Town of Cambridge, 2026.
Policy text and Appendix 1 checklist. The Town page links to the PDF.
R-Codes Volume 1 — Western Australian Planning Commission, April 2026.
Current residential planning framework, including site planning, solar access, ventilation, trees and landscaping.
State Planning Policy 2.9 Water — Western Australian Planning Commission, December 2025.
Water-resource management in planning; operational from 18 December 2025.
NCC 2022 energy efficiency overview — Australian Building Codes Board.
Raised the residential thermal-performance benchmark and introduced whole-of-home energy requirements.
NCC 2022 Part 13.6 — Australian Building Codes Board.
Whole-of-home energy use, including the contribution of on-site photovoltaic systems.
Home Energy Rating — Australian Government and States and Territories.
Explains new-home energy ratings and the Whole of Home rating framework.
Your Home passive design — Australian Government.
Orientation, shading, glazing, thermal mass and ventilation as an integrated climate-responsive design task.
Your Home water — Australian Government.
General benefits and design considerations for rainwater, wastewater reuse and stormwater.
Your Home materials — Australian Government.
Environmental effects of material selection, embodied energy and construction waste.
Urban Greening Strategy — Western Australian Government, 2026.
Whole-of-government direction for tree canopy, vegetation and green space.
Better Regulation developing a regulatory proposal — WA Department of Treasury and Finance, 15 December 2023.
Problem definition, options, analysis, implementation, evaluation and avoiding duplication or conflict.
Guidance Note 1 Consultation Considerations — WA Department of Treasury and Finance, December 2023.
Accessible and transparent consultation that helps people understand the problem, objectives, issues and alternatives. Used as context, not a legal test of the Town.
Seven Impact Analysis Questions — Australian Government Office of Impact Analysis, 1 July 2026.
Comparative policy-analysis framework covering problem, options, impacts, consultation, implementation and evaluation.
OECD Best Practice Principles for Regulatory Impact Assessment — OECD, 2020.
International reference on problem definition, alternatives, benefits and costs, and monitoring and evaluation.
Town agendas and minutes — Town of Cambridge.
Primary Council record source for the 28 June 2022 resolution arising from the Wembley Character Study.
Town local planning policies — Town of Cambridge.
Current landing page for LPP 3.16, LPP 3.25 and Local Law 43 policy material.
WA implementation clarification for NCC 2022 — Western Australian Government.
Confirms WA adoption and transitional operation of NCC 2022; current project requirements should be checked against the applicable approval date.
Evidence limitations
This verified version is a bounded review prepared during consultation. It does not claim to contain every internal Town document or every relevant study. Technical performance varies with site, design, installation, occupant behaviour and maintenance. Where the available evidence does not support precision, the site uses questions and qualified language rather than a numerical claim.