Subfloor Ventilation in Albury-Wodonga — questions and answers
Short answers about subfloor ventilation in Albury and Wodonga: what a quote should settle, what the code says about vents and clearance, what damp ground changes, and how the two States differ. Every rule is a regulator's own, with its read date. This site sets no prices.
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How much does subfloor ventilation cost in Albury-Wodonga?
We do not answer that with a price, because no government source sets one. What the code does say is that a subfloor space must have openings and clearance, and that damp or often-flooded ground adds a requirement, so ask the provider what they found under your house and what drove the quote. The costs page's Albury-Wodonga subfloor costs and rules check lists the lines that can apply to the space under a house in Albury (NSW) or Wodonga (Victoria), each with its source.
Do Albury and Wodonga follow the same code edition?
Not yet, on the Australian Building Codes Board's dates: NSW adopts NCC 2025 on 1 May 2027 and Victoria did so on 1 May 2026. The subfloor clause reads the same in the two editions we compared, and we read no State variation to it.
Under a house in Albury-Wodonga
What the sources put a number on
Six figures, each in a government body's own words: two winter humidity readings, two lines from the National Construction Code's subfloor clause, and the two States' adoption dates for its newer edition.
A damp July at Albury Airport
90%
mean 9am relative humidity in July at Albury Airport, readings 1993 to 2010
The Bureau's July reading, against a January reading much lower on the same row.
Source: Bureau of Meteorology, Climate statistics for Albury Airport AWS · read
A damp July at Wodonga
88%
mean 9am relative humidity in July at Wodonga, readings 1954 to 1967
A different station and period, so not a like-for-like comparison with Albury.
Source: Bureau of Meteorology, Climate statistics for Wodonga · read
Where the ground is damp or floods often
50%
the extra ventilation the NCC lists as one of its options for excessively damp or often-flooded ground
The code lists other options, among them a sealed ground. Ask which one a quote uses.
Source: Australian Building Codes Board, NCC 2022 ABCB Housing Provisions, Part 6.2 Subfloor ventilation · read
Openings near the corners
600 mm
the furthest in from a corner that the code allows an opening to be placed
The code's table sets how many openings, by climatic zone; no page we read states the zone for either city.
Source: Australian Building Codes Board, NCC 2022 ABCB Housing Provisions, Part 6.2 Subfloor ventilation · read
NSW adopts the newer edition
1 May 2027
the Australian Building Codes Board's date for New South Wales
Until then a house in Albury is under the earlier edition of the code.
Source: Australian Building Codes Board, NCC 2025 state and territory adoption information · read
Victoria adopts the newer edition
1 May 2026
the Australian Building Codes Board's date for Victoria
A house in Wodonga is under the newer edition as at the date this page was read.
Source: Australian Building Codes Board, NCC 2025 state and territory adoption information · read
Each figure names its source and the date it was read. None is a rule for your house or a promise about any quote.
Process
Is mould under or inside my house a ventilation problem?
It can be a moisture problem. NSW Health says poor sub-floor ventilation or moisture in the sub-floor area will worsen rising damp, and Victoria's Better Health Channel says the way to control indoor mould growth is to control the source of moisture. Neither says what is wrong with a particular house.
My house floods or the ground stays wet. What does the code say?
Where the ground or subfloor space is excessively damp or subject to frequent flooding, the code adds a requirement, with options that include increasing ventilation by 50 per cent or sealing the ground with an impervious membrane. Which option suits a house is for the provider to explain.
Timing
How quickly can someone get to me?
We cannot promise a time. It depends on the provider's bookings. Form and phone enquiries are passed to a local provider, who contacts you directly.
Is winter the time to check under the house?
It is the damp season on the Bureau of Meteorology's record: July's mean 9 am relative humidity is 90 per cent at Albury Airport and 88 per cent at Wodonga (read 7 October 2026), against 53 and 48 per cent in January. The code itself says its climatic zones use the season with the highest relative humidity, generally July for southern Australia. Nothing we read says when work should be done.
Permits and approvals
Do I need approval to add or change vents?
We have not read a NSW or Victorian page that answers this for vents, so we do not say. The Australian Building Codes Board says the NCC applies whenever building approval is needed and to check with your local council if you are not sure. Ask the provider and Albury City Council or the City of Wodonga.
Source: No NSW, Victorian, Albury City Council or City of Wodonga page read on 7 October 2026 states an approval rule for subfloor vents.
Service area
Which suburbs do you cover?
Albury and the localities around it in NSW, and Wodonga and the localities around it in Victoria. Four suburb pages are each written around one fact from a council page: Lavington, South Albury, Wodonga and Baranduda. The other localities are covered on the same terms.
Do you do the subfloor work yourselves?
No. A marketing company runs this site and passes each enquiry to an independent qualified local provider. The provider looks under the house and quotes, and does any work itself; we have no crews or equipment.
Thanks — we have your enquiry. Someone will be in touch shortly. Prefer to talk now? Call (02) 9072 0403.
Last reviewed · Updated · First published