Merewether Heights flood map & planning overlays
A planning-constraint profile of Merewether Heights
(Newcastle, NSW) - 0.56 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
0.56 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Merewether Heights'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 Merewether Heights
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 5,000 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.
Merewether Heights at a glance
How Merewether Heights is zoned
Buying in Merewether Heights? 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 0.56 km², Merewether Heights is highly constrained by planning overlays. About 2% of the suburb sits within a mapped flood overlay, and 43% is flagged bushfire-prone. There are 4 heritage-listed sites on record, and the dominant land-use zone is Low Density Residential. The median lot measures about 590 m² across 526 parcels.
Who lives in Merewether Heights
Census 2021 figures published by the ABS for the Merewether Heights 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 1133, and decile 10 within New South Wales. The national average is 1000.
Age profile
Share of Merewether Heights's 1,495 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Merewether - The Junction, the wider ABS statistical area containing Merewether Heights. There is no annual population series published at suburb level, so this describes the surrounding area rather than Merewether Heights itself.
13,169 in 2001 to 14,975 in 2025, up 14%.
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.
Merewether Heights 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 Merewether Heights 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 43% of Merewether Heights. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Published flood models are held over parts of Merewether Heights. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Merewether Heights lot.
See what's in the $9 report →Merewether Heights planning - frequently asked
Is Merewether Heights flood-prone?
About 2% of Merewether Heights falls within a mapped flood overlay, against the council-wide suburb average of 39%. Published flood models are held over parts of Merewether Heights; the free check on the Flood Model Report page says whether one reaches a given address.
Is Merewether Heights bushfire-prone?
Around 43% of Merewether Heights is mapped as bushfire-prone, compared with a Newcastle average of 24%.
Is Merewether Heights under a flight path?
Aircraft were observed below 3,000 ft over about 43% of Merewether Heights, and over about 98% 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 1,000 ft, with an average of 4,000 ft. At the busiest point in the suburb about 1 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 Merewether Heights?
The dominant planning zone in Merewether Heights is Low Density Residential, though the suburb also includes Infrastructure and Private Recreation.
Does Merewether Heights have heritage-listed places?
Merewether Heights has 4 heritage-listed places on record.
What is the typical lot size in Merewether Heights?
Across 526 surveyed parcels in Merewether Heights, the median lot size is about 590 m². There are also 1 registered easements mapped in the suburb.
Does Merewether Heights have a train station?
There is no train station inside Merewether Heights itself. The suburb is served by 33 bus stops.
What is the population of Merewether Heights?
At the 2021 Census Merewether Heights had 1,495 usual residents, with a median age of 41 and an average household size of 2.9 people. The wider Merewether - The Junction statistical area, which contains Merewether Heights, went from 13,169 people in 2001 to 14,975 in 2025, up 14%.
Is Merewether Heights an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Merewether Heights scores 1133 and sits in decile 10 of 10 nationally and decile 10 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Merewether Heights?
Median household income in Merewether Heights was $3,022 a week at the 2021 Census, against $1,818 for the typical suburb in Newcastle. Median rent was $580 a week and the median mortgage repayment $2,600 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Adamstown | 1.1 km | 28% | 16% |
| Merewether | 1.3 km | 21% | 52% |
| Hamilton South | 1.9 km | 67% | 0% |
| Highfields Lake Macquarie |
2.0 km | Not mapped | 64% |
| Adamstown Heights | 2.2 km | 8% | 52% |
| The Junction | 2.6 km | 83% | 0% |
| Kahibah Lake Macquarie |
2.7 km | Not mapped | 32% |
| Broadmeadow | 2.7 km | 73% | 0% |
| Hamilton East | 2.9 km | 80% | 0% |
| New Lambton | 3.0 km | 36% | 34% |