RPT_P0041116_Other Change - 7 Noosa Parade_V1_260511 · MCU25/0053.01

8 Key Planning Matters
8.1 Flood Hazards
Flood hazard is the key planning matter requiring focused consideration because the proposed basement
layout introduces ancillary recreational and wellness spaces that may be characterised as habitable rooms
for assessment purposes.

While the site is zoned Medium Density Residential, the flood hazard provisions applicable to dwelling houses
are contained within the Low Density Housing Code and apply across residential zones. Accordingly, AO18.1 is
the appropriate benchmark for assessing flood risk associated with habitable rooms within the dwelling.

The proposal seeks a performance-based outcome in relation to AO18.1 of the Low Density Housing Code.

Acceptable Outcome AO18.1:

       Where the development is located in the Flood Hazard Area as shown on Flood Hazard Overlay Map in
       Schedule 2, the finished floor level of habitable rooms is at least 300 millimetres above the Defined
       flood event (DFE).

The proposed basement-level amendments introduce a club lounge and gym/golf simulator room. These
spaces are ancillary to the dwelling and are intended for recreational, wellness and entertainment purposes
rather than for sleeping or overnight accommodation.

A Flood Information Certificate issued by Noosa Council confirms that the minimum floor level for habitable
rooms/areas for the site is 2.7m AHD for the defined flood event, being 1% AEP under 2100 climate change
conditions.

While the proposed basement spaces are not identified as bedrooms and are not intended for sleeping
accommodation, the club lounge may be regarded as comparable to a media room or rumpus room for
assessment purposes. On this basis, AO18.1 is not relied upon, and the proposal is assessed against
Performance Outcome PO18.

Performance Outcome PO18:

       Development is designed and sited to ensure risk to people and property from flooding is avoided or
       minimised.

The proposed development does not rely on the basement-level recreational areas for bedroom
accommodation. Risk to people and property is minimised through the retention of the approved flood
management, stormwater and dewatering measures, including basement drainage to a pump well,
discharge to the stormwater network, retention of plant and pump infrastructure, provision of a secondary
pump and backup power supply, and installation of an automatic flood barrier at the basement entry. These
measures provide a clear and robust management response to flood and stormwater events.

Further certainty can be achieved through conditions restricting basement-level recreational rooms from
being used for sleeping accommodation and requiring the ongoing maintenance of the approved flood
mitigation infrastructure, including the pump systems, backup power supply and automatic flood barrier, for
the life of the development.

Accordingly, the proposed design achieves the intent of PO18 by avoiding an unacceptable increase in flood
risk and ensuring that residual risk is appropriately managed through building design, operational limitations
and retained mitigation infrastructure.


8.2 Landscape Amenity
The proposal seeks an alternative outcome in relation to AO24 of the Medium Density Residential Zone Code.
Whilst this was assessed as part of the current approval, the cut and fill levels are proposed to increase
slightly due to the rearrangement of the basement level and updates to the pool shape and depth.

Other Change Application - 7 Noosa Parade                                                   Key Planning Matters   38