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

AI summary

Buying a home with monolithic cladding requires caution due to its link to the NZ leaky homes crisis (1987-2005). While not all plaster homes leak, design flaws and poor building practices increase the risk of water damage, which can cause health issues.

Warning signs include:

- Sagging ceilings or mould

- Swollen skirting boards

- Rusted screws

Repairs can exceed $330,000, and securing insurance is often difficult. Always get a specialised building inspection to assess moisture levels before making an offer.

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