Brownlow Hill flood map & planning overlays
A planning-constraint profile of Brownlow Hill (Wollondilly, NSW) - 18.0 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
18.0 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Brownlow Hill's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Brownlow Hill at a glance
How Brownlow Hill is zoned
Buying in Brownlow Hill? 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 18.0 km², Brownlow Hill is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 87% is flagged bushfire-prone. There are 10 heritage-listed sites on record, and the dominant land-use zone is Rural Landscape. The median lot measures about 21,864 m² across 108 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Brownlow Hill
Census 2021 figures published by the ABS for the Brownlow Hill 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 1080, and decile 9 within New South Wales. The national average is 1000.
Age profile
Share of Brownlow Hill's 384 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of The Oaks - Oakdale, the wider ABS statistical area containing Brownlow Hill. There is no annual population series published at suburb level, so this describes the surrounding area rather than Brownlow Hill itself.
7,821 in 2001 to 10,429 in 2025, up 33%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Brownlow Hill data sources and coverage
Every figure below is an aggregate for the suburb boundary. “Not mapped” means LayeredGeo does not hold a source layer covering this suburb; it is never an all-clear for a particular property.
| 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 |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 5 August 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 Brownlow Hill 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.
See what's in the $9 report →Brownlow Hill planning - frequently asked
Where can I see a flood map of Brownlow Hill?
The schematic on this page is a Brownlow Hill flood map: the mapped flood overlays drawn over the suburb's terrain and street grid. Flood lines vary block to block, so for a specific property use the free interactive map - search any Brownlow Hill address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Brownlow Hill flood-prone?
Flood mapping covers Brownlow Hill and none of the suburb falls within a mapped flood overlay. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Brownlow Hill bushfire-prone?
Yes - around 87% of Brownlow Hill is mapped as bushfire-prone, compared with a Wollondilly average of 93%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Brownlow Hill?
The dominant planning zone in Brownlow Hill is Rural Landscape, though the suburb also includes Special Activities and Primary Production. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Brownlow Hill have heritage-listed places?
Brownlow Hill has 10 heritage-listed places on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
What is the typical lot size in Brownlow Hill?
Across 108 surveyed parcels in Brownlow Hill, the median lot size is about 21,864 m². There are also 2 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
Does Brownlow Hill have a train station?
There is no train station inside Brownlow Hill itself. The suburb is served by 33 bus stops.
What is the population of Brownlow Hill?
At the 2021 Census Brownlow Hill had 384 usual residents, with a median age of 37 and an average household size of 3.2 people. The wider The Oaks - Oakdale statistical area, which contains Brownlow Hill, went from 7,821 people in 2001 to 10,429 in 2025, up 33%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Brownlow Hill alone.
Is Brownlow Hill an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Brownlow Hill scores 1080 and sits in decile 10 of 10 nationally and decile 9 within New South Wales - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
What is the median household income in Brownlow Hill?
Median household income in Brownlow Hill was $2,349 a week at the 2021 Census, against $2,250 for the typical suburb in Wollondilly. Median rent was $360 a week and the median mortgage repayment $2,700 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Brownlow Hill property?
A Brownlow Hill planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Grasmere Camden |
3.0 km | 0% | 61% |
| Ellis Lane Camden |
3.1 km | 0% | 30% |
| Bickley Vale Camden |
4.3 km | 0% | 94% |
| Camden Camden |
4.9 km | 0% | 52% |
| Orangeville | 5.2 km | 0% | 97% |
| Glenmore | 5.2 km | Not mapped | 100% |
| Theresa Park | 6.2 km | 0% | 74% |
| Cawdor | 6.3 km | 0% | 98% |
| Kirkham Camden |
6.3 km | 0% | 79% |
| Mount Hunter | 6.4 km | 0% | 98% |