Doyalson flood map & planning overlays
A planning-constraint profile of Doyalson
(Central Coast, NSW) - 8.5 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
8.5 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Doyalson'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 Doyalson
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
Night movements: observed, lowest 9,000 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.
Doyalson at a glance
How Doyalson is zoned
Buying in Doyalson? 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 8.5 km², Doyalson is highly constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 86% is flagged bushfire-prone. The dominant land-use zone is Transition. The median lot measures about 832 m² across 225 parcels.
Who lives in Doyalson
Census 2021 figures published by the ABS for the Doyalson 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 878, and decile 1 within New South Wales. The national average is 1000.
Age profile
Share of Doyalson's 299 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blue Haven - San Remo, the wider ABS statistical area containing Doyalson. There is no annual population series published at suburb level, so this describes the surrounding area rather than Doyalson itself.
9,010 in 2001 to 11,723 in 2025, up 30%.
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.
Doyalson 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 Doyalson 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 18% of Doyalson. 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 Doyalson. 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 Doyalson lot.
See what's in the $9 report →Doyalson planning - frequently asked
Is Doyalson flood-prone?
About 9% of Doyalson falls within a mapped flood overlay, against the council-wide suburb average of 30%. Published flood models are held over parts of Doyalson; the free check on the Flood Model Report page says whether one reaches a given address.
Is Doyalson bushfire-prone?
Around 86% of Doyalson is mapped as bushfire-prone, compared with a Central Coast average of 69%.
Is Doyalson under a flight path?
Aircraft were observed below 3,000 ft over about 18% of Doyalson, and over about 40% 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. 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 Doyalson?
The dominant planning zone in Doyalson is Transition, though the suburb also includes Infrastructure and Environmental Conservation.
Does Doyalson have heritage-listed places?
No heritage-listed places are on record within Doyalson.
What is the typical lot size in Doyalson?
Across 225 surveyed parcels in Doyalson, the median lot size is about 832 m². There are also 7 registered easements mapped in the suburb.
Does Doyalson have a train station?
There is no train station inside Doyalson itself. The suburb is served by 16 bus stops.
What is the population of Doyalson?
At the 2021 Census Doyalson had 299 usual residents, with a median age of 38 and an average household size of 2.7 people. The wider Blue Haven - San Remo statistical area, which contains Doyalson, went from 9,010 people in 2001 to 11,723 in 2025, up 30%.
Is Doyalson an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Doyalson scores 878 and sits in decile 1 of 10 nationally and decile 1 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Doyalson?
Median household income in Doyalson was $1,433 a week at the 2021 Census, against $1,735 for the typical suburb in Central Coast. Median rent was $370 a week and the median mortgage repayment $1,692 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Blue Haven | 2.0 km | 31% | 41% |
| San Remo | 2.4 km | 28% | 48% |
| Colongra | 3.4 km | 14% | 84% |
| Bushells Ridge | 3.6 km | 12% | 99% |
| Doyalson North | 3.7 km | 3% | 96% |
| Charmhaven | 4.0 km | 32% | 81% |
| Buff Point | 4.3 km | 30% | 39% |
| Mannering Park | 4.4 km | 16% | 63% |
| Halekulani | 4.7 km | 15% | 55% |
| Kingfisher Shores | 5.0 km | 45% | 94% |