An industry expert says lack of windows and poor ventilation in newly built homes is putting Kiwis at risk.

Concerns have been raised as more terraced houses in Auckland are overheating - causing discomfort and potential health issues for residents.

Independent urban planner and strategic development expert Bruce Weir says it's difficult to address overheating once houses have been built.

"You can never get higher ceilings back - once you build a building, that's it. The issue really is that resource consent level, you've got to get the fundamentals right."

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• Terraced house hellfire: New builds in Akl overheating due to poor design