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 monolithic cladding home requires caution due to NZ's leaky homes crisis, particularly for properties built between 1987-2005. These homes can trap moisture, leading to rot, mould, and significant health risks.

Warning signs include sagging ceilings and swollen materials. Repairs can exceed $330,000, and securing insurance may be difficult.

A specialised building inspection is essential to assess watertightness before purchasing, though homes built post-2005 with a proper drainage cavity are lower risk.

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