Buying guide

Should I buy a monolithic cladding house? Understanding NZ leaky homes

Properties with plaster or monolithic cladding can be risky purchases, but they're not all leaky.

Ben Tutty
Last updated: 24 February 2026 | 6 min read
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Buying a home with monolithic cladding requires caution due to the NZ leaky homes crisis. These properties, especially from 1987-2005, can trap moisture, causing rot, health issues, and costly repairs often exceeding $330,000.

Look for warning signs like mould, sagging ceilings, or swollen materials. Before purchasing, always get a specialised building inspection to check moisture levels. Homes built post-2005 with a proper drainage cavity are generally a lower risk, but diligence is essential.

What exactly is a leaky home?

What caused the NZ leaky homes crisis?

Monolithic cladding — the main culprit?

Not all plaster homes leak, but they may be at a higher risk.

How can I spot a leaky home?

If you keep your eyes open during a property inspection you may be able to spot signs that a home is leaky.

Not all plaster homes are leaky but they should be approached with caution.

The cost of fixing a leaky home

Should I buy a monolithic cladding house?

FAQs — Navigating leaky homes in NZ

Author

Ben Tutty Ben Tutty
Content Writer