Exterior of Kōwhai House by Rafe Maclean Architects

Budget Breakdown: A New Zealand Architect Builds a Passive House for His Family for $490K

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Rafe opted to wrap the building in corrugated Zincalume. "Dunedin is not the sunniest spot in the world. It rains a lot," says Rafe. "So, having something that sort of shimmed in the bush was quite attractive, rather than it being dark and stealth—or another color that mimicked greenery."