Change of Use — Stormwater, Flood & Public Domain, Inner West

Council — Inner West Council

Development — Change of use — Commercial to Residential

Services — Stormwater Management Plan · Erosion & Sediment Control · Driveway & Access Design · Roads Act Approval · Road & Pavement Design · Flood Risk Assessment

Year — 2026

Outcome — Approved

Background

The development converted an existing commercial building to residential use.

The problem

Three problems at once, and Amuna was engaged to resolve all of them. The building sits wall-to-wall on its boundaries, leaving nowhere obvious to run stormwater pipes. The site is surrounded by floodwater in large storm events, raising real concerns about basement inundation. And an existing driveway had to be removed and replaced with footpath.

Our solution

We designed a gravity stormwater system discharging all roof runoff safely to the street, with the pipe runs concealed internally within the building's walls — no external downpipes on a wall-to-wall façade, and no pumping.

For the flood risk, we specified a flood gate to address the basement inundation concern directly, rather than through the more disruptive alternative of raising levels.

For the public domain, we designed the driveway removal and set new footpath levels to give safe, continuous pedestrian access along the frontage.

Was it approved? Yes.

Driveway long section with proposed flood gate and flood planning level.

Stormwater Management Plans