Subfloor Ventilation in The Entrance
Central Coast Council's Tuggerah Lakes study, dated 21 November 2014, says ponding in yards still occurs and may take several days to drain away, and that it is likely to be associated with high water table conditions. If your home is in The Entrance, Long Jetty or Toukley, that is the reason to look at the subfloor and the flood map first.
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Subfloor Ventilation around The Entrance
The study, Council's Tuggerah Lakes Floodplain Risk Management Study and Plan by WMAwater, covers Tuggerah Lake, Budgewoi Lake and Lake Munmorah and the immediate floodplain, and the properties at Wyong and Tuggerah with ground levels below approximately 3 mAHD. It says local drainage flooding occurs in nearly all suburbs due to the relatively flat grades. It is a 2014 study and the page says so; it names no street and no house.
Where a subfloor is excessively damp or subject to frequent flooding, the National Construction Code requires, for new work, 50% more subfloor ventilation, a ground membrane or durable subfloor framing. Check your address on Council's online mapping tool, which shows whether a property is subject to a 1 in 100 chance flood event.
Permits and Central Coast Council rules
Whether cutting a new subfloor vent here needs approval is for the council to confirm: the state's exemption for minor external alterations does not cover making or enlarging an opening in a wall, and a separate clause exempts a ventilator at least 900 mm from every lot boundary, though whether a wall vent counts as a ventilator is not settled by anything read for this site.
Source: State Environmental Planning Policy (Exempt and Complying Development Codes) 2008, ss 2.53, 2.54 and 2.74; read 27 September 2026. — confirm current requirements with Central Coast Council.
Our The Entrance service area
An enquiry from The Entrance is passed on to an independent licensed provider, who gets in touch to look at the job.
See all Subfloor Ventilation on the Central Coast. We also work in Long Jetty, Toukley, Wyong and Bateau Bay, among the other areas we list. Related pages: fan-forced subfloor ventilation, passive subfloor vents, rising damp and mould and high water table and flood-prone homes.
Call (02) 4326 8289Last reviewed · Updated · First published