Is Hollydeen, NSW Climate Safe? 2026 Assessment
Climate Safety Score
5.5/10Moderate climate risk — address-specific
Key Facts
- Climate Safety
- Medium
- Flood
- Hollydeen faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is projected to increase due to climate change.
- Bushfire
- Hollydeen has a high bushfire risk due to its proximity to bushland areas. Hot, dry conditions exacerbate the risk, and climate change is expected to worsen bushfire conditions.
- Heat
- Hollydeen is likely to experience more frequent and intense heatwaves. This poses a risk to vulnerable populations, especially during summer months. Climate change is driving increased average temperatures.
- Storm
- Moderate storm risk — East Coast Lows bring severe weather including hail and damaging winds
- Postcode
- 2328
- Highest high-risk exposure
- 24.7% of land (bushfire)
Climate Safety Analysis
Hollydeen in New South Wales has an overall climate safety rating of Medium. This multi-hazard assessment combines flood, bushfire, heat, coastal, and storm risk data with climate projections to 2050 from CSIRO and the Bureau of Meteorology.
Key factors affecting Hollydeen's climate safety include heat, bushfire. Each hazard is assessed independently and combined for an overall picture. Australia has warmed by approximately 1.5 °C since 1910, with flow-on effects to fire weather, extreme rainfall, and heatwave frequency.
Climate safety for property in Hollydeen is not uniform — it varies by address. Factors such as elevation, distance to waterways, proximity to bushland, and local drainage all influence actual risk at a specific property. Two nearby properties can have materially different risk profiles.
For a complete property-specific climate safety report for Hollydeen including address-level hazard mapping, insurance outlook, and adaptation recommendations, use the ClimateNest full analysis tool.
Hollydeen (postcode 2328) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are bushfire (24.7% of land in high-risk zones), surface flood (10.7% of land in high-risk zones), riverine flood (4.8% of land in high-risk zones). Exposure is not uniform across Hollydeen — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.
Local Hazard Evidence
Historical Events
Significant rainfall led to flooding in some parts of the region, impacting roads and properties.
Severe bushfires impacted the region, causing property damage and evacuations.
Prolonged heatwave conditions affected the region, with temperatures exceeding 40 degrees Celsius.
Heavy rainfall caused localized flooding in low-lying areas of the region.
Adaptation & Mitigation Actions
Improve Flood Defenses
Near-termConstruct levees and improve drainage systems to reduce flood risk.
Est. cost: High
Bushfire Preparedness
ImmediateImplement bushfire management strategies, including controlled burns and vegetation clearing.
Est. cost: Medium
Heatwave Action Plan
Near-termDevelop a heatwave action plan to protect vulnerable populations during extreme heat events.
Est. cost: Low
Community Education
Long-termEducate residents about climate risks and adaptation measures.
Est. cost: Low
Council & Emergency Services
Explore Hollydeen Risk Reports
View other climate risk assessments for Hollydeen:
Frequently Asked Questions
Is Hollydeen safe from climate change?
No location in Australia is entirely immune to climate change impacts. Hollydeen has an overall Medium climate risk rating. Understanding the specific hazards at your property address — not just the suburb average — provides the most reliable risk picture.
Which climate hazard poses the biggest risk in Hollydeen?
The dominant hazard for Hollydeen depends on geography and local environment. Proximity to waterways elevates flood risk, while proximity to bushland increases bushfire risk. ClimateNest's multi-hazard analysis identifies the highest-risk hazards for any specific address.
How does Hollydeen compare to nearby suburbs for climate safety?
Nearby suburbs may have different climate risk profiles depending on elevation, vegetation cover, drainage patterns, and land use. ClimateNest allows comparison of climate safety scores across New South Wales suburbs.
Should I be concerned about buying property in Hollydeen?
Climate risk should be one factor in your decision, alongside price, location, and amenity. An informed buyer understands the specific risks at a property address and factors insurance costs and climate projections into their assessment of long-term value.
What climate projections should I know for Hollydeen?
Key projections for New South Wales from CSIRO include increased average temperatures, more frequent hot days, changes in rainfall seasonality, longer fire seasons, and potential increases in extreme rainfall intensity. These trends inform the long-term outlook for Hollydeen.
What share of Hollydeen is exposed to high bushfire risk?
ClimateNest's hazard overlay maps 24.7% of Hollydeen in high-risk zones for bushfire, with a further 60.3% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.
Is Hollydeen Safe from Climate Risk?
Enter your address below for an instant climate risk assessment for Hollydeen, New South Wales, covering flood, bushfire, sea level rise and more.
What A$69 could save you from
*Industry sources: ICA, APRA, RBA
Full report from A$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections