Dunedin City Council (DCC) has rejected claims that it is to blame for flooding in South Dunedin, as AA Insurance maintains geographic limits on new property cover in several natural hazard‑exposed areas around New Zealand.
In a recent statement, DCC rejected suggestions that its stormwater network is the main cause of flooding in South Dunedin and pointed instead to a range of natural hazards affecting the suburb. “There are extensive natural hazard risks in South Dunedin, including (but not limited to) rainfall flooding, groundwater, tsunamis, earthquakes, liquefaction, coastal erosion and inundation, and landslides,” a council spokesman said, as reported by Otago Daily Times.
The statement followed comments from Surrey St Flood Action Group convener Lynne Newell, who linked local flooding to what she described as underperforming drainage and pumping assets, in the context of AA Insurance declining new policies in some flood‑prone locations. Newell argued that the area’s geography should not, in itself, generate flood events. She said South Dunedin did not “have any rivers, we don’t have any streams, we don’t have anywhere that can cause a flood. We have pipes that don’t work and pumping stations that don’t work. That’s the story.”
DCC disputed that description, saying that historic waterways and overland flow paths still shape how water moves through the catchment even though many channels are now piped. “These are now piped and covered up, but overland flow paths remain. Water follows the path of least resistance, typically downhill and South Dunedin lies at the bottom of the catchment. Our pipes and pumps work – the issue is the capacity of the network during periods of heavy rainfall, exacerbated by high groundwater levels which leave nowhere else for rainwater to go,” the spokesman said. The council said its view of South Dunedin’s natural hazard profile is informed by work undertaken by the Otago Regional Council, the University of Otago, GNS, and Earth Sciences New Zealand. It also responded to suggestions that the council should pay for repairs or property damage, stating it is “not responsible ... for insurance payments.”
The debate over responsibility for flood impacts in South Dunedin is occurring as AA Insurance manages exposure through postcode‑based limits on new home policies in parts of Canterbury and other regions. In North Canterbury, the insurer has put a temporary stop on issuing new home insurance policies in Woodend, a township about 25 kilometres north of Christchurch. AA Insurance has said the Woodend move reflects the fact that its portfolio in the area has reached its internal maximum level of earthquake exposure, rather than a new assessment of climate‑related risk. Woodend follows other Canterbury communities where AA Insurance has already paused new home cover. In September 2025, it applied similar holds on new home policies in the Lincoln 7608 and Rolleston 7615 postcodes, also citing internal seismic exposure limits.
On its website, AA Insurance describes an approach to managing natural hazard concentrations that uses external risk modelling, third‑party data, and the company’s own claims history. It says that in some locations it places temporary caps on the number of new home policies. “New Zealand experiences a range of natural hazards such as floods, storms, earthquakes, and landslides, and some areas face higher levels of risk than others. We sometimes need to temporarily limit the number of new home insurance policies we issue in certain areas. This helps ensure that we can support our existing customers should a large-scale event occur. It’s not a decision we take lightly, and we regularly review these limits, so restrictions may change over time,” the insurer said.
AA Insurance is also limiting new property cover on the West Coast, where the focus is flood exposure and risk concentration. From the end of January 2026, the insurer stopped offering new home, business, and landlord policies for properties in postcode 7825, which covers Westport, Carters Beach, and Cape Foulwind. Existing policies in the area remain in force subject to standard renewal criteria. In a letter sent to Buller District Mayor Chris Russell in late 2025, AA Insurance said its internal flood exposure metrics for the area had reached pre‑set limits and that it would not take on additional risks there until that aggregate exposure had reduced. Russell later reported on the Buller District Council website that the change mainly affects new business and that the insurer had indicated the measure was temporary.
AA Insurance head of home portfolio management Jane Naidu said the Westport position is linked both to local flood risk and to the insurer’s exposure levels. “This decision reflects the elevated natural hazard risk of flooding in the area, and that our exposure has reached a level where a pause on new policies is the most responsible step to ensure we can be there for our existing customers when they need us most,” Naidu said, as reported by RNZ. The insurer says it reviews geographic restrictions regularly and may resume writing new policies if exposure in a postcode falls “sufficiently below” its internal maximum. Naidu has also said the insurer is “committed to continuing engagement with local community leaders,” including meetings with council representatives in Westport to discuss flood protection schemes.
AA Insurance says the various underwriting holds apply only to new policies and that existing customers who continue to meet its underwriting criteria can renew as usual. “If you already have a home or landlord insurance policy with us, any temporary limits won’t affect you. You can renew your policy as usual when it’s due, provided you still meet our standard underwriting criteria. There’s nothing you need to do,” the insurer said. For residential property sales in affected postcodes, AA Insurance says it has a transfer process that allows cover to move from a current customer to a purchaser where the home is already insured with the company, subject to its standard guidelines. For insurers, intermediaries, and risk managers, the council–community dispute in South Dunedin and the exposure‑driven decisions in Woodend and Westport illustrate how natural hazard assessments, concentration thresholds, and portfolio management are influencing property insurance availability at a local level across New Zealand.
