News – Page 3 – Contrive Consultants

November 18, 2025

When a NSW retaining wall needs no approval, a CDC or a full DA - height thresholds, boundary rules, drainage duties and…

November 11, 2025

How to integrate BASIX rainwater tank commitments with roof drainage design on NSW new homes - connected roof area, overflows and certification.

November 4, 2025

How builders and developers can read flood mapping in Sydney's growth areas - AEP, freeboard, flood functions and what to check before…

October 21, 2025

What NSW councils assess in DA landscape plans - landscaped area, deep soil, canopy, species - and how good landscape design integrates…

October 14, 2025

How MUSIC modelling demonstrates stormwater quality compliance to NSW councils - pollutant targets, source nodes, treatment nodes and MUSIC-link.

September 16, 2025

What Sydney councils' pollutant reduction targets mean, when a DA needs MUSIC modelling, and how engineers build treatment trains that pass review.

September 9, 2025

Wollondilly DCP 2016 stormwater and OSD requirements explained - Picton, Tahmoor and Wilton growth, rural-residential drainage and flood factors.

September 2, 2025

How lagoons, dunes and coastal overlays shape stormwater design on the NSW coast - what builders and developers need to check before…

August 19, 2025

Where pool backwash, emptying water and surrounds drainage must go in NSW - sewer vs stormwater rules, overflow in storms, and the…

August 12, 2025

City of Parramatta stormwater rules under DCP 2023 - OSD to the UPRCT handbook, drainage plans and WSUD for infill and high-density…