Carmarthen flood map & planning overlays
A planning-constraint profile of Carmarthen (Blue Mountains, NSW) - 123.43 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
123.43 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Carmarthen'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.
Carmarthen at a glance
How Carmarthen is zoned
Buying in Carmarthen? 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 123.43 km², Carmarthen is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 185,509 m² across 2 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.
Carmarthen 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 | Not 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 Carmarthen 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 →Carmarthen planning - frequently asked
Where can I see a flood map of Carmarthen?
The schematic on this page is a Carmarthen 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 Carmarthen address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Carmarthen flood-prone?
Flood mapping covers Carmarthen 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 Carmarthen bushfire-prone?
Yes - around 100% of Carmarthen is mapped as bushfire-prone, compared with a Blue Mountains average of 96%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Carmarthen?
The dominant planning zone in Carmarthen is National Parks and Nature Reserves. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Carmarthen have heritage-listed places?
No heritage-listed places are on record within Carmarthen. Even so, it is worth confirming for an individual property before any works.
What is the typical lot size in Carmarthen?
Across 2 surveyed parcels in Carmarthen, the median lot size is about 185,509 m².
Do I need a planning report for a Carmarthen property?
A Carmarthen 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 |
|---|---|---|---|
| The Devils Wilderness Hawkesbury |
5.9 km | 0% | 100% |
| Mount Tomah | 7.9 km | 0% | 100% |
| Berambing Hawkesbury |
8.3 km | 0% | 100% |
| Rocklily Ridge | 8.6 km | Not mapped | 100% |
| Govetts | 9.8 km | Not mapped | 100% |
| Kariwoga | 10.0 km | 0% | 100% |
| Birrabang | 11.6 km | Not mapped | 100% |
| Mount Wilson | 12.3 km | 0% | 100% |
| Lawson | 12.5 km | Not mapped | 88% |
| Faulconbridge | 12.5 km | Not mapped | 97% |