Remediation

Remediation in the New Zealand property context covers a broad range of repair and restoration work. The most common types buyers encounter are weathertightness remediation (fixing leaky buildings), contaminated land remediation (cleaning up hazardous substances), earthquake strengthening (bringing buildings up to minimum seismic standards), and methamphetamine decontamination.

Weathertightness remediation has been the most significant category in recent decades. Full remediation of a leaky building typically involves stripping the exterior cladding, removing and replacing rotted timber framing, installing a proper drainage cavity, and re-cladding with a weathertight system. Partial remediation — fixing only the most affected areas — is sometimes possible but carries the risk of missing hidden damage.

Remediation work generally requires a building consent, and the completed work needs to receive a Code Compliance Certificate (CCC). Quality remediation, properly consented and inspected, can restore a building to a sound condition and even improve its value.

If a property has been remediated, you need to understand the scope and quality of the work. Was the remediation comprehensive or partial? Were building consents obtained and CCCs issued? Who did the work, and are they still in business (for warranty purposes)? Was the remediation done to the standard of the MBIE Acceptable Solutions?

A well-remediated property can be a good purchase — the problem has been identified and fixed. But a poorly remediated property can be worse than one that hasn't been touched, because problems may be hidden behind new cladding. Always get an independent assessment of any remediation work.

Check the LIM report for remediation-related building consents and CCCs. Ask the seller for all documentation relating to the remediation: scope of work, contractor details, engineer's reports, producer statements, warranties, and before/after photos. Get an independent building inspector to assess the quality of the remediation. For contaminated land, check post-remediation validation reports confirming contamination levels are below guidelines.