August 5, 2025
Servicing Constraints in Growth Areas: Check Before You Buy
Power, water, sewer, NBN and stormwater: the servicing checks builders and developers should run before buying land in Sydney's growth areas.
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Updates from Contrive Consultants.
July 15, 2025
Swept Path Analysis: When Councils Demand It and Why It Pays
When NSW councils require swept path analysis, which design vehicles matter, and how early vehicle turning checks rescue basement and driveway designs.
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July 8, 2025
OSD for Knock-Down Rebuilds & Tight Sydney Infill Lots
Fitting on-site detention on tight Sydney lots - tank placement, existing impervious credits and design tricks for knock-down rebuilds.
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June 17, 2025
Bioretention Design That Gets Approved: Media, Sizing, Checks
How to design bioretention that passes council review in Sydney: FAWB filter media specs, sizing rules, MUSIC alignment and the checklist assessors…
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June 10, 2025
CDC vs DA Stormwater Requirements in NSW: What Certifiers Expect
CDC vs DA stormwater requirements in NSW - what drainage documentation certifiers expect under the Codes SEPP, and how the two pathways…
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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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May 20, 2025
Basement Drainage and Pump-Out Systems Sydney Councils Accept
How basement drainage and pump-out systems are designed to satisfy Sydney councils - gravity first, dual pumps, storage, alarms and the approvals…
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May 13, 2025
Proprietary Device vs Bioretention for Duplex & Townhouse Sites
Cartridge device or rain garden? Cost, footprint, maintenance and MUSIC modelling compared for NSW duplex and townhouse stormwater treatment.
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May 6, 2025
Greenfield vs Infill Development in Sydney: Engineering Costs
Comparing greenfield and infill development in Sydney? A civil engineer breaks down the real cost drivers: earthworks, stormwater, services and approvals.
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April 15, 2025
Which Surveys Does Your Development Need? A NSW Builder’s Guide
Detail, identification, level, set-out and WAE surveys explained - what each one is for, when your NSW project needs it, and what…
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