$25 billion in Australian coastal property at risk due to climate change

A giant wave bursts over a storm levy.

Remember when the Sydney Harbour went brown after flooding? Aesthetics may be only a hint of the impending disaster. 

According to a report from Corelogic , erosion, storm surges, and climate change will jeopardise nearly $25 billion in Australian residential coastal property. Rapidly rising Australian sea levels only worsen the problem, which is poised to endanger nearly 20,000 coastal homes over the next three decades. 

These natural trends will have far-reaching consequences for a property market still hot from the 2021 boom, particularly for home loans and home insurance premiums/coverage, which are already experiencing upward pressure due to an impending RBA cash rate rise and intense flooding on the east coast. 

Buyers hoping for seaside homes should therefore take coastal risks into account when comparing potential mortgages repayments and insurance policies.

Risks of buying coastal property in Australia

The Sydney harbour-side skyline at blue hour.
Photo by Daniel Chen.

Coastal risk typically accounts for events such as:

  • Erosion
  • Storm surges
  • Rising sea levels. 

Erosion (also known as shoreline retreat) endangers properties due landslides and bedrock removal either over short or long periods of time. Storm surges, currents, winds, and elevated tides can all directly affect coastal erosion – and will inevitably get worse as the sea level rises and the weather becomes more erratic due to climate change.

Corelogic’s report categorises Australian properties into five different levels of risk, from no risk to very high risk. Of the over 900,000 dwellings categorised in the report, 20,000 fell into the highest risk categories due to their coastal exposure (including nearly 12,700 houses and 9,400 units). 

The report shows that Queensland bears the brunt of properties at risk, mostly due to the Sunshine and Gold Coast’s densely populated coastlines. New South Wales, Tasmania, and South Australia were close behind, however.

Suburbs experiencing the greatest coastal risk include Paradise Point in Queensland; Cronulla and Manly in Sydney, NSW; and Port Melbourne in Victoria.

A table of the 10 highest risk coastal suburbs in Australia.
Source: Corelogic.

These suburbs usually had a combination of high dwelling density, high value, high erosion, low elevation, and close proximity to the coastline. 

This can come as worrying news for recent homeowners and investors, especially as a pandemic-driven shift to working from home led to a regional and coastal property boom. The aggravated coastal risk may yet be one of many climate change-related effects driving up the costs of housing, including mortgage repayments and home insurance premiums. 

So while that dream home might have incredible seaside vistas and lifestyle appeal, the report author Dr. Pierre Wiart advises that taking coastal risks into account will help consumers make informed purchasing decisions. 

“With the tangible effects of climate change already being felt in most parts of Australia,” he concludes, “this important data will allow consumers to make the best property decisions, and help them plan for long-term wealth preservation.”

RELATED: Feeling helpless about climate change? Here's what you can do (to save money, too!)

In the market for a home loan? Compare options below, or browse a curated list of green home loans to save the environment.

Last updated 10 July 2025 Important disclosures and comparison rate warning*
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Loan purpose
Buying or Refinancing
  • Promoted

    Unloan Variable Home Loan

    • Owner occupier
    • Principal & Interest
    • 20% min deposit
    • Redraw available
    Interest rate
    5.49 % p.a.
    Variable
    Comparison rate
    5.40 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • The first home loan with an increasing discount (conditions apply)
    • No application or banking fees
    • Built by CommBank
  • Promoted

    Everyday Home Loan

    • Owner occupier
    • Principal & Interest
    • Interest only
    • 20% min deposit
    • Redraw available
    Interest rate
    5.54 % p.a.
    Variable
    Comparison rate
    5.59 % p.a.
    Initial monthly repayment
    $2,852
    Go to site
    • Access unlimited free redraw on extra repayments
    • No monthly account keeping fees
    • Option to split your loan (fee applies)
  • Promoted

    Fixed Rate Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • 5% min deposit
    Interest rate
    5.49 % p.a.
    Fixed 2 years
    Comparison rate
    5.77 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • No ongoing annual fees
    • Make up to $25,000 extra repayments during a fixed period, fee free (T&Cs apply)
    • Lock in for up to 5 years.
  • Promoted

    Fixed Rate Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • Interest only
    • 20% min deposit
    Interest rate
    5.49 % p.a.
    Fixed 2 years
    Comparison rate
    5.76 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • Free extra repayments of up to $25,000 during the fixed rate period.
    • Split loan available
    • Weekly, fortnightly, or monthly repayment options
  • Fixed Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • 5% min deposit
    • Redraw available
    • Cashback
    Interest rate
    5.29 % p.a.
    Fixed 2 years
    Comparison rate
    5.72 % p.a.
    Initial monthly repayment
    $2,773
    Go to site
    • Get up to $4,000 cashback (T&Cs apply)
    • Up to 12 months repayments in advance without penalties
    • Split loan available
  • Unloan Variable Home Loan

    • Owner occupier
    • Principal & Interest
    • 20% min deposit
    • Redraw available
    Interest rate
    5.49 % p.a.
    Variable
    Comparison rate
    5.40 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • The first home loan with an increasing discount (conditions apply)
    • No application or banking fees
    • Built by CommBank
  • OMG Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Redraw available
    Interest rate
    5.49 % p.a.
    Variable
    Comparison rate
    5.52 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • No ongoing annual fees
    • Pre-approval valid for 3 months
  • Fixed Rate Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • Interest only
    • 20% min deposit
    Interest rate
    5.49 % p.a.
    Fixed 2 years
    Comparison rate
    5.76 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • Free extra repayments of up to $25,000 during the fixed rate period.
    • Split loan available
    • Weekly, fortnightly, or monthly repayment options
  • Fixed Rate Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • 5% min deposit
    Interest rate
    5.49 % p.a.
    Fixed 2 years
    Comparison rate
    5.77 % p.a.
    Initial monthly repayment
    $2,836
    Go to site
    • No ongoing annual fees
    • Make up to $25,000 extra repayments during a fixed period, fee free (T&Cs apply)
    • Lock in for up to 5 years.
  • Flex Home Loan

    • Fixed rate
    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Offset available
    • Redraw available
    Interest rate
    5.53 % p.a.
    Fixed 2 years
    Comparison rate
    5.86 % p.a.
    Initial monthly repayment
    $2,848
    Go to site
    • Multiple offset accounts available
    • Free extra repayments
    • Easy redraw facility
  • Budget Home Loan

    • Owner occupier
    • Principal & Interest
    • 20% min deposit
    • Redraw available
    • Cashback
    Interest rate
    5.54 % p.a.
    Variable
    Comparison rate
    5.57 % p.a.
    Initial monthly repayment
    $2,852
    Go to site
    • Get up to $4,000 cashback (T&Cs apply)
    • Split loan available
  • Variable Home Loan 90

    • Owner occupier
    • Principal & Interest
    • 10% min deposit
    • Offset available
    • Redraw available
    Interest rate
    5.54 % p.a.
    Variable
    Comparison rate
    5.58 % p.a.
    Initial monthly repayment
    $2,852
    Go to site
    • No monthly or ongoing fees
    • Option to add an offset for 0.10% p.a.
  • Everyday Home Loan

    • Owner occupier
    • Principal & Interest
    • Interest only
    • 20% min deposit
    • Redraw available
    Interest rate
    5.54 % p.a.
    Variable
    Comparison rate
    5.59 % p.a.
    Initial monthly repayment
    $2,852
    Go to site
    • Access unlimited free redraw on extra repayments
    • No monthly account keeping fees
    • Option to split your loan (fee applies)
  • Basic Variable Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Redraw available
    Interest rate
    5.63 % p.a.
    Variable
    Comparison rate
    5.66 % p.a.
    Initial monthly repayment
    $2,880
    Go to site
    • No ongoing monthly loan maintenance fees
    • Weekly, fortnightly, or monthly repayment options
  • Neat Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Redraw available
    Interest rate
    5.64 % p.a.
    Variable
    Comparison rate
    5.66 % p.a.
    Initial monthly repayment
    $2,883
    Go to site
    • Free extra repayments
    • Easy redraw facility
    • No annual fee to pay
  • Offset Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Offset available
    • Redraw available
    Interest rate
    5.64 % p.a.
    Variable
    Comparison rate
    5.67 % p.a.
    Initial monthly repayment
    $2,883
    Go to site
    • No ongoing monthly loan maintenance fees to pay.
    • Pre-approval valid for 3 months
  • Flex Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Offset available
    • Redraw available
    Interest rate
    5.64 % p.a.
    Variable
    Comparison rate
    5.89 % p.a.
    Initial monthly repayment
    $2,883
    Go to site
    • Multiple offset accounts available
    • Free extra repayments
    • Easy redraw facility
  • Offset Home Loan

    • Owner occupier
    • Principal & Interest
    • Interest only
    • Offset available
    • Redraw available
    Interest rate
    5.74 % p.a.
    Variable
    Comparison rate
    5.79 % p.a.
    Initial monthly repayment
    $2,915
    Go to site
    • 100% offset account
    • Access unlimited free redraw on extra repayments
    • No monthly account keeping fees
  • Offset Variable Home Loan

    • Owner occupier
    • Principal & Interest
    • 40% min deposit
    • Offset available
    • Redraw available
    Interest rate
    5.84 % p.a.
    Variable
    Comparison rate
    5.87 % p.a.
    Initial monthly repayment
    $2,947
    Go to site
    • No ongoing monthly loan maintenance fees
    • Weekly, fortnightly, or monthly repayment options
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* WARNING: This comparison rate applies only to the example or examples given. Different amounts and terms will result in different comparison rates. Costs such as redraw fees or early repayment fees, and cost savings such as fee waivers, are not included in the comparison rate but may influence the cost of the loan. The comparison rate displayed is for a secured loan with monthly principal and interest repayments for $150,000 over 25 years.

** Initial monthly repayment figures are estimates only, based on the advertised rate. You can change the loan amount and term in the input boxes at the top of this table. Rates, fees and charges and therefore the total cost of the loan may vary depending on your loan amount, loan term, and credit history. Actual repayments will depend on your individual circumstances and interest rate changes.

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