$735 million later, Auckland ratepayers are still paying for leaky homes

A crisis that refuses to end

More than two decades after leaky homes became a national byword for shoddy construction, the bill is still landing on ratepayers. Auckland ratepayers have now paid $735.4 million in weathertightness-related costs since 2011, according to an NZ Herald investigation published this week. That is the single clearest measure of how much the crisis has cost Auckland’s public purse, and it does not capture the full national picture.

John Gray, co-founder of the Home Owners and Buyers Association, has advocated for distressed property owners since 2006. His assessment is blunt: “It’s neverending. It’s very sad, really.” Gray is now dealing with owners of new homes, multiplexes and apartments, some barely five to ten years old. He describes some failures as deliberate: “In a lot of these cases we see, it’s not a whoopsy, it’s not a mistake, it’s a wilful decision” to build that way.

The numbers behind the headline

This is not a legacy problem winding down. In the 2023-24 financial year alone, Auckland Council paid out $25 million in weathertightness-related claims, 1News reported in October 2024. The council set aside $263 million in 2024-25 to settle building defect claims region-wide, up from $257 million the year before. OIA data reported by the Herald in August 2024 showed the council had paid out $315 million in confidential settlements over five years.

The underlying rot is worse than the historical tally suggests. New Zealand’s annual cost of building defects is now estimated at $2.5 billion, enough to fund roughly 5,000 new homes, and close to 10 percent of the construction sector’s value lost to quality failure. In Auckland, around 160,000 building inspections are carried out annually, with between 14 and 37 percent failing first inspection depending on the construction stage. The total legacy cost of the original crisis is now put at $47 billion.

Why councils keep paying

The reason the public keeps footing the bill is structural. Under joint and several liability, any liable party can be forced to pay a full judgment even if their share of fault is tiny, once other defendants go insolvent. Builders go bust. Developers dissolve. Councils remain, the last entity standing when homeowners seek compensation.

Back in 2012, the Office of the Auditor-General documented 6,677 claims for 9,262 properties, with Auckland, Christchurch, Tauranga and Wellington responsible for 96 percent of active claims. In 2011, Auckland’s Long-term Plan allocated $526 million over 10 years to leaky home claims, funded by borrowing spread over 30 years. Fifteen years on, the meter is still running.

The reform, and the risk it just moves the problem

The government is now pursuing Building Act reform, shifting toward proportionate liability and expanded self-certification. The logic is sound on its face. In 2025, Local Government New Zealand vice president Campbell Barry said councils had been “holding the bag at the end of the process when things go wrong”. Registered Master Builders argued the current system creates perverse incentives, with parties bolting on “protections in place which then creates red tape, and slows everything down”.

But the insurance industry is not reassured, and that should worry anyone buying property. Insurance analysis carried by the Herald concluded that while the government is right to push builders to professionalise, “as it stands, the proposed change isn’t weathertight”. The concern is the “empty chair” problem, a gap in what a homeowner can recover once the council is no longer on the hook. Liability reform changes who pays when things go wrong. It does nothing to change how many things go wrong.

What it means for buyers and investors

For property investors, developers and business owners with commercial premises, the practical takeaway is sharp. A new build purchased today may carry the same long-tail defect liability as a 1990s monolithic-clad job, but with fewer recovery routes if the builder is gone and proportionate liability applies. Banks already will not lend on weathertight-compromised properties, trapping owners who cannot sell or refinance. And the $2.5 billion annual defect cost is a systemic drag embedded in every project a construction, property or lending business touches.

Ratepayers have carried $735.4 million so far. The government wants to reduce that exposure, and it should. But if the reform lands without a proper consumer backstop, the person left holding the bag next time will be the individual property owner. Due diligence just became a lot more expensive than a builder’s report.

Sources

• Why New Zealand’s shameful legacy of shoddy and leaky building is not over yet (2026-08-28)
• Exclusive: Leaky homes costing councils tens of millions per year (2024-10-02)
• Auckland Council pays out $315m in ‘secret’ financial settlements on behalf of ratepayers (2024-08-07)
• Auckland Council pays out $1.45m in leaky building lawsuit
• NZ has a $2.5b building defect problem: Will self-certification make it better or worse? (2026-08-01)
• Part 8: Managing leaky home liabilities – Local government audits (2012)
• Councils, builders pleased with liability changes, but insurers warn of challenges
• Major Building Act reform isn’t weathertight and risks leaving homeowners exposed