February 17, 2026
Demolition, Erosion and Sediment Control: Protect Your NSW Site
Erosion and sediment control from demolition to slab in NSW — your ESCP, the Blue Book controls councils expect, and the fines…
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Updates from Contrive Consultants.
November 18, 2025
Retaining Wall Approvals in NSW: Exempt, CDC or DA?
When a NSW retaining wall needs no approval, a CDC or a full DA — height thresholds, boundary rules, drainage duties and…
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August 19, 2025
Pool Drainage, Backwash and Stormwater: NSW Compliance Guide
Where pool backwash, emptying water and surrounds drainage must go in NSW — sewer vs stormwater rules, overflow in storms, and the…
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February 18, 2025
Driveway Design and Drainage: NSW Gradient and Crossover Rules
Driveway gradients, transitions, scraping checks and council crossover approvals in NSW — how to design access that cars can use and councils…
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September 17, 2024
Drainage Easements in NSW: Negotiation, s88K and Your Options
When your NSW site can't drain to the street you may need an easement over a neighbour's land. How to negotiate, what…
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July 9, 2024
Ocean Protect Systems: OceanGuard, StormFilter & More in NSW
A consultant's guide to Ocean Protect stormwater devices — OceanGuard pit baskets, StormFilter cartridges and Jellyfish — and how they fit NSW…
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June 18, 2024
CDC vs DA in 2024: The Fastest Approval Pathway for Your NSW Build
DA or CDC for your NSW project? How each pathway works in 2024, where complying development wins on speed, and the traps…
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April 9, 2024
Torrens vs Strata Subdivision for Duplexes in NSW: Which Is Best?
Torrens or strata title for your NSW duplex? Compare the process, cost drivers, buyer appeal and site requirements before you commit to…
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March 15, 2022
What is On-Site Detention (OSD)? A Builder’s Guide for NSW
A plain-English guide to on-site detention (OSD) for NSW builders — what PSD and SSR mean, how tanks work, and why councils…
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