Most Kiwi homes are more like wooden tents than homes according to Bay of Plenty housing expert Nik Greggs.

They are damp, not properly insulated, poorly heated and need better ventilation, he says.

The Sustainability Options co-founder has been helping raise housing standards in the Rotorua free, for the past two years, but says "as a nation, we are living in wooden tents".

"We continue to build homes that are low standard compared to other Western nations."

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His comments come a month before new housing laws kick in. Landlords face fines of up to $4000 if they don't have ceiling

Insulation law deadline