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 monolithic cladding house in NZ requires caution due to the leaky homes crisis, primarily affecting homes built between 1987 and 2005. While not all plaster homes leak, the risk is significant.

Warning signs include:

- Mould or fungi

- Sagging ceilings

- Swollen skirting boards

A specialised building inspection is crucial, as repairs can exceed $330,000. Homes built after 2005 with a proper drainage cavity are generally considered a lower-risk purchase.

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