Cavan flood map & planning overlays
A planning-constraint profile of Cavan
(Yass Valley, NSW) - 141.02 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
141.02 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Cavan's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Cavan
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 2 Oct 2026
typical observed square 1 a day
Night movements: observed, lowest 8,500 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Cavan at a glance
How Cavan is zoned
Buying in Cavan? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 141.02 km², Cavan is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 97% is flagged bushfire-prone. There are 7 heritage-listed sites on record, and the dominant land-use zone is Primary Production. The median lot measures about 200,534 m² across 303 parcels.
Who lives in Cavan
Census 2021 figures published by the ABS for the Cavan suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 1047, and decile 8 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Yass Surrounds, the wider ABS statistical area containing Cavan. There is no annual population series published at suburb level, so this describes the surrounding area rather than Cavan itself.
8,258 in 2001 to 13,346 in 2025, up 62%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Cavan data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 3 October 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Cavan address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
Aircraft have been seen below 3,000 ft over about 6% of Cavan. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Cavan lot.
See what's in the $9 report →Cavan planning - frequently asked
Is Cavan flood-prone?
Flood mapping covers Cavan and none of the suburb falls within a mapped flood overlay.
Is Cavan bushfire-prone?
Around 97% of Cavan is mapped as bushfire-prone, compared with a Yass Valley average of 99%.
Is Cavan under a flight path?
Aircraft were observed below 3,000 ft over about 6% of Cavan, and over about 33% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 2 Oct 2026). The lowest measured aircraft was at 1,500 ft, with an average of 4,500 ft. At the busiest point in the suburb about 3 aircraft a day were recorded passing over one 500 m square. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Cavan?
The dominant planning zone in Cavan is Primary Production, though the suburb also includes Natural Waterways.
Does Cavan have heritage-listed places?
Cavan has 7 heritage-listed places on record.
What is the typical lot size in Cavan?
Across 303 surveyed parcels in Cavan, the median lot size is about 200,534 m². There are also 3 registered easements mapped in the suburb.
Is Cavan an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Cavan scores 1047 and sits in decile 9 of 10 nationally and decile 8 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Narrangullen | 7.4 km | 0% | 95% |
| Boambolo | 9.0 km | 0% | 99% |
| Good Hope | 12.5 km | 0% | 93% |
| Woolgarlo | 15.6 km | 0% | 98% |
| Burrinjuck | 16.2 km | 0% | 96% |
| Mullion | 16.3 km | 0% | 100% |
| Wee Jasper | 16.8 km | 0% | 99% |
| Jeir | 17.0 km | 0% | 100% |
| Marchmont | 18.1 km | 0% | 100% |
| Yass | 22.7 km | 0% | 94% |