December 16, 2025
Dual Occupancy Stormwater: Duplex Design in Western Sydney
What a duplex stormwater package really involves in Western Sydney — OSD, easements, clay soils, subdivision traps and what certifiers check at…
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Updates from Contrive Consultants.
June 3, 2025
Dual Occupancy in Newcastle, Wollongong & Central Coast NSW
NSW housing reforms opened dual occupancy in R2 zones state-wide. What it means in Newcastle, Wollongong and the Central Coast, plus site…
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March 4, 2025
NSW Low and Mid-Rise Reforms: Dual Occs and Terraces Expand
Stage 2 of the NSW low and mid-rise housing reforms commenced 28 February 2025. What the dual occupancy and terrace standards mean…
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January 16, 2024
The Duplex Development Process in Sydney: A Step-by-Step Guide
Every stage of a Sydney duplex project explained — feasibility, design, approvals, construction and subdivision, plus the consultants you need at each…
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December 6, 2022
Duplex Stormwater & Roof Drainage Plans in Sydney: Dual Occupancy
Dual occupancy stormwater requirements explained — shared drainage, easements, detention and roof drainage plans certifiers expect for Sydney duplexes.
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