Risks to post-disaster housing repair quality: What Building Consent Authorities should know

After a flood, storm, or earthquake, repairing homes quickly can create problems that are hard to see until years later. If wet materials are covered before a house has dried properly, rot, mould, and structural damage can develop behind walls.

Damage assessments can also miss problems, meaning repairs may be incomplete or based on the wrong scope of work. Some repairs that need building consent may go ahead without it, often because homeowners and contractors are unclear about the requirements.

Without consent and inspection records, it can be difficult to confirm that structural work was completed safely and to the right standard. These risks can affect future owners too. A home may be sold with hidden damage, incomplete repairs, or little information about what happened after the disaster. Removing or losing records of placards and damage can make this worse.

Building Consent Authorities can help by giving clear, plain-language advice early:

• how to clean up
• dry homes
• sequence repairs
• determine when consent is needed.

They can also:

• support faster consenting and inspections
• encourage moisture checks before walls are relined
• keep clear property records so future owners can understand a home’s repair history.