Over-Engineered, Over-Priced: Is the DBP Act Being Used Against the Owners It Was Meant to Protect?
Strata owners are being sold remediation they don’t need. History shows exactly how this happens.
Every building defect crisis in living memory has followed the same script. Owners discover a problem. Lawyers, engineers, and consultants rush to milk the opportunity. Regulators scramble to write new rules. Somewhere in the chaos, a class of remediation specialists emerges, armed with fresh legislation and issuing very large invoices.
Australia is deep inside that script right now. Defective waterproofing membranes in strata buildings have become the defining building failure of this decade. But before owners grab their chequebooks, they should see a pattern. This has happened twice already in countries much like ours.
What happened in New Zealand and Vancouver?
New Zealand's leaky homes crisis peaked in the 1990s and 2000s, affecting over 89,000 homes. It happened due to the common use of monolithic cladding systems that trapped moisture. The direct remediation cost exceeded NZ$11 billion. What followed the public inquiry was a sweeping overhaul of the Building Act in 2004. Building practitioners had new licensing requirements introduced, and a wave of consultants and engineers repositioned themselves as leaky-home specialists. Many owners spent much more on remediation than needed. This happened because the regulatory response made things complex, risky, and overly detailed.
The Vancouver leaky condo crisis followed an almost identical trajectory. Envelope failures affected approximately 65,000 units from the late 1980s through the 1990s.The Barrett Commission inquiry led to new technical guidelines and new licensing regimes, creating an industry of building envelope consultants. Again, owners often faced remediation scopes that were much larger than needed to make their buildings safe and waterproof.
The pattern in both cases was the same: genuine building failures, genuine regulatory response, and genuine exploitation of the resulting complexity by a new professional class.
How does post-crisis regulation create new opportunities for exploitation?
New laws and technical codes meant to protect consumers can, ironically, lead to over-servicing them. Regulator-mandated repairs that must be designed by a registered practitioner and certified as compliant with updated standards expand the scope for professional judgement. A simple repair turns into a multi-step engineered solution, with each step costing extra.
In both New Zealand and Vancouver, the post-crisis regulatory environment rewarded complexity. Engineers and consultants who suggested full remediation faced less liability risk than those who advised targeted repairs. The incentive structure pointed in one direction: do more, specify more, charge more.
Is the Design and Building Practitioners Act being misread?
In New South Wales, the Design and Building Practitioners Act 2020 (DBP Act) created a new class of registered practitioners. They have specific legal duties of care. It was designed to ensure accountability for defective residential building work. For buildings with waterproofing membrane failures, the DBP Act is now the go-to-guide for any repair work.
Some contractors and consultants are misrepresenting the DBP Act’s registration and compliance rules. This misleads owners into thinking they need to do much more costly and invasive remediation than what the Act actually demands. The Act imposes obligations on practitioners producing regulated designs and building elements. Owners can avoid replacing entire membrane systems. Targeted repairs and validating current systems can achieve the same results. It does not require every adjacent substrate to be exposed and inspected as a default. Those are design decisions. Decisions should be made on the merits of the specific defect, not as risk-mitigation strategies for the practitioner’s professional liability.
Owners confronting membrane failures are routinely presented with scopes specifying complete strip-out, new primary and secondary waterproofing layers, new drainage, and new surface finishes. Total costs can reach ten to fifteen times the cost of a targeted repair that a competent, independent assessment would recommend.
Read: Building Better: How NSW is Tackling the Apartment Defects Crisis
What should owners and strata managers do?
The lessons from New Zealand and Vancouver are clear. Owners who accepted the first remediation scope presented to them frequently paid a multiple of the necessary cost. However, commissioning independent technical reviews significantly improved outcomes. Owners must separate diagnostic and remediation roles and ask contractors to justify each part of the scope against specific defects.
For strata managers, this is a governance question as much as a technical one. Committees are entitled to ask why a remediation scope specifies each element, to require that every line item be referenced to a specific defect, and to obtain an independent review before committing to major expenditure. Nothing in the DBP Act forecloses that scrutiny.
