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
AI

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Buying a home with monolithic cladding carries risks due to New Zealand's leaky homes crisis. Properties built between 1987-2005 are particularly susceptible, as design flaws can trap moisture, leading to structural rot and health issues.

Watch for warning signs like mould, sagging ceilings, and swollen materials. Repairs can exceed $330,000, and securing insurance can be difficult. Always get a specialised building inspection to assess watertightness before making an offer on a plaster-clad home.

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