Board advances draft WUI code requiring more wildfire-resistant siding and decks, keeps HVAC measures optional

May 11, 2026

The Flagstaff Board of Appeals voted to recommend moving forward with draft Wildland-Urban Interface (WUI) code amendments that favor noncombustible siding and decking for new construction; staff will gather public outreach feedback and return with refinements. HVAC filtration options will remain voluntary for now.

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The Flagstaff City Board of Appeals on Tuesday voted to recommend moving forward with draft amendments to the Wildland-Urban Interface (WUI) code that would increase noncombustible construction standards for new residential siding and decks, while leaving proposed HVAC filtration changes as optional and for further study.

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