12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
Regional House DNA

The year changes the likely assembly.

Choose a regional construction era to see common systems, priority clues and the first context checks.

AU · Before 1945

Traditional Australian houses

Raised timber floors, ventilated roof spaces, weatherboards or masonry and later service additions.

subfloor moisturetermite evidenceroof drainage
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AU · 1945–1979

Post-war Australian housing

Brick veneer, tiled roofs, slab and raised-floor variants with limited insulation.

storm entrysubfloor ventilationsolar movement
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AU · 1980–2009

Air-conditioning transition era

Growing insulation and cooling use across varied climate zones.

duct condensationcooling-season moistureroof penetrations
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AU · 2010–present

Contemporary Australian homes

Tighter lightweight assemblies, complex glazing and climate-zone-specific energy provisions.

condensation managementflashingbushfire interfaces
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